Forte
Gantry, Exchanger
and Table
Installation
9202-0160 Rev E
Sec 1: Gantry ..............................1-1
Sec 2: Right Hand Exchanger .....2-1
Sec 3: Left Hand Exchanger .......3-1
Sec 4: Table ................................4-1
Sec 5: Covers and Testing ..........5-1
App A: Collimator Eccentrics ......A-1
App B: Collimator Support Adj ....B-1
Philips Nuclear Medicine
540 Alder Dr.
Milpitas, CA 95035
Disclaimer
The information and drawings set forth in this document and all rights in and to inventions
disclosed herein and patents which might be granted thereon disclosing or employing the
materials, methods, techniques or apparatus described herein are the exclusive property of Philips
Nuclear Medicine.
Further, Philips reserves the right to revise this publication and to make changes from time to
time in the content hereof without obligation of Philips to notify any person or organization of
such revision or changes.
This document is protected by copyright. No copies of this information or drawings shall be made
without the prior consent of Philips.
Trademarks
Sun is a trademark of Sun Microsystems, Inc. SPARC is a registered trademark of SPARC
International, Inc.
About This Manual
This manual describes the field installation of the Forte Gantry, Collimator Exchanger and Patient
Table.
This manual describes two models of Forte Cameras:
• Forte with Atlas Electronics Rack (Forte Atlas) - manufactured before November 2000
which require an additional Atlas Rack in the camera room.
• Forte with Power Pack (Forte Power Pack) - manufactured after December 2000 which
have a slightly larger compartment behind the Gantry. That compartment contains the
electronic components formerly contained in the separate Atlas Electronics Rack.
Copyright 2003, Philips Nuclear Medicine, 540 Alder Drive, Milpitas, CA 95035
Important
To avoid difficulty when aligning the Exchanger to the Gantry, you must follow
the sequence of steps in this manual.
The following steps are particularly important:
• Support-Leg Leveling
Page 1-15
• Gantry Roll Adjustment at Zero
Page 1-27
• Eccentric Adjustments
Page 2-4 and Appendix A, or
Page 3-8 and Appendix A
• Exchanger Height & Level Adjustment
Page 2-7, or
Page 3-11
You must have a digital level with 0.01° precision to perform the Gantry
Leveling Adjustment and the Gantry Roll Adjustment at Zero Adjustment.
The Philips Nuclear Medicine part number for a digital level is 9999-5307.
i
.
Section 1
Gantry
Section 1
Forte Gantry Installation Instructions
I. Introduction
Before beginning the installation, verify that the path (halls, elevators, doors, etc.) to the
imaging room is large enough for the Dolly-mounted Gantry to pass.
You will use a Dolly (2155-3700) to lift the Gantry off the shipping skid and move the
Gantry to the imaging room. If the elevator or halls will not accommodate the normal
Dolly (91" length), you must swap smaller side plates after getting the Gantry off the
skid. Instructions for doing this appear later.
Additionally, verify that:
A. the floor under the Exchanger Rails is level and flat within ±1/8" (3 mm),
B. the floor under the Exchanger in the "exchange" position is at the same level as the
floor under the Gantry Leveling Feet within ±1/8" (3 mm), and
C. the floor under the four Patient Table Wheels is at the same level as the floor under
the Gantry within ±1/4" (6 mm).
If the floor does not meet the above levelness requirements, you may have to pour a pad
under the Gantry, Exchanger Rails and Patient Table. If you have to pour a pad, you
must taper the pad beyond the Gantry, Rails and Table footprint to avoid trip hazards.
1-1
Section 1
Gantry
II. Removing Gantry from Pallet
Note: It requires two people to position the Gantry Dolly (2155-3700), attach it to
the Gantry and move the Gantry.
WARNING Never leave the Gantry unsupported!
The center of gravity of the Gantry is only about 1” (2.5 cm) behind the
front edge of the Gantry. If you attempt to move the Gantry (even just
“nudge” the Gantry) when the Gantry is not supported by either the skid,
a Dolly or a Gantry Support Leg, the Gantry WILL tip over! Since the
Gantry weighs 2,156 lbs (978 Kg), you will not be able to stop a falling
Gantry! A falling Gantry will cause major damage and may cause
significant injury or death!
A. Note: Remove the Bottom Rear Gantry Cover and swing the Gantry PC door to its
open position (requires removing two screws). If you fail to do this, you will not be
able to attach the gantry bolts in a later step!
B. On only one side of the Gantry, remove the shipping bracket that attaches the
Gantry to the skid.
WARNING
Do not remove the shipping brackets from both sides of the Gantry simultaneously.
The Gantry is very likely to tip over if you remove both shipping brackets!
C. Securely attach one half of the Dolly (2155-3700) to that side of the Gantry using
the same screws you removed in the previous step.
D. On the other side of the Gantry, remove the other shipping bracket; securely attach
the other half of the Dolly to that side of the Gantry.
1-2
Section 1
Gantry
E. On both sides of the Dolly, attach the two Connecting Plates.
WARNING. You must install the two Connecting Plates before moving the Gantry.
If you do not attach the two Connecting Plates and the Gantry “high centers” as the
Dolly passes over an unlevel surface (like a ramp), the Dolly will not restrain the
Gantry. An unrestrained Gantry WILL fall, cause major damage and may cause
significant injury or death!
Connecting Plate
Connecting Plate
Iso View - Connecting Plate Placement
F. Use the wheels on the Dolly to raise the gantry off the skid.
1-3
Section 1
Gantry
III. Moving the Gantry
Note: After you use the Dolly to get the Gantry off the skid, if you must move the
Gantry and Dolly into a small elevator or around a tight corner, you must replace the
normal side plates with shorter side plates. Shorter side plates, 2155-2355, come in
the crate with the Dolly. If you replace the side plates on only one Dolly, the length
will decrease from 91" (231cm) to 82" (208cm). If you replace the Side Plates on
both Dollies, the length will decrease to 73" (185cm). Instructions for changing Side
Plates follow.
A. If you must change to the smaller Side Plates, do these steps:
1. Place a wooden block under one corner of one Dolly.
2. Lower Gantry onto the wooden block by turning the Dolly handles counter
clockwise.
WARNING. Do NOT attempt to change Side Plates on BOTH
Dollies at the same time. An unsupported Gantry WILL fall and
WILL cause major damage and may cause significant injury or
death!
3. Remove both Connecting Plates (not the Side Plates). See previous illustration.
4. Remove the four bolts holding one Wheel Assembly on one corner of the
Gantry.
1-4
Section 1
Gantry
5. Remove the 11 bolts holding the Side Plate on the same corner, and set the Side
Plate aside.
Side Plates
6. Attach one smaller Side Plate by re-inserting the 11 bolts.
7. Re-attach the Wheel Assembly.
8. Move the wooden block to a different Dolly corner and repeat steps “1” through
“7” for each of the other three Side Plates.
9. Re-attach the two Connecting Plates.
B. Move the Gantry to the imaging room.
1-5
Section 1
Gantry
IV. Removing Exchanger from Pallet
A. Remove packing material from Exchanger Crate.
B. Remove the Ramp from the front part of the Exchanger.
C. Put the Ramp in front of the Crate and secure it to the Crate with the Lock Links.
D. Remove the banding and 2" x 2" brace on the front of the Crate.
E. Roll the Exchanger forward down the Ramp.
F. Roll the Exchanger to its position near the Gantry in the imaging room using the
four Dolly Wheels.
G. When you have the Exchanger positioned near the Gantry, locate the four Leveling
Screws on each of the four Dolly Brackets.
Leveling Screw
Quick Release Bracket
Dolly Bracket
H. Crank the four Leveling Screws down until the four Dolly Wheels are off the floor.
I. Use the Quick Release Bracket on each Dolly Bracket to release each Dolly Wheel
from its Dolly Bracket.
J. Crank the four Leveling Screws up until the Exchanger is sitting on its own wheels.
K. Remove the Rear Cover from the Exchanger.
L. Remove the four Dolly Brackets.
Warning: Do not move the Exchanger with the rear Drive Wheel touching the floor.
You may damage the Exchanger Drive mechanism. Place a towel under the rear
Drive Wheel so it will slide.
Note: After you have mounted the Detectors on the Gantry, put the Exchanger Dolly
Wheels and Dolly Brackets in one of the Detector Crates and return them to Adac.
1-6
Section 1
Gantry
V. Drilling & Installing Bolts or Screws into a Steel Plate
If the hospital installed a steel plate to strengthen their floor, follow the instructions in
this section; otherwise skip to part VI of this procedure.
A. You can secure the Gantry to a customer-installed steel plate by either
through-bolting or, if the steel plate is at least 1/2" (13mm) thick, by drilling and
taping into the steel plate. The below instructions covers both techniques.
B. Obtain the Gantry Template (2155-3726).
Note: There are two types of Gantry Leveling Feet. Leveling Feet with round holes
(2155-2154 meet California seismic requirements. Leveling Feet with slightly
slotted holes (2155-2208) are easier to install; you may use slotted feet only for
non-seismic installations.
The above Gantry Template (2155-3726) will work with either type of Leveling
Feet.
Do not, however, use the older 2155-3702 Gantry Template with the newer
2155-2154 or 2155-2208 Leveling Feet. Also, do not use the newer 2155-3726
Template with older, large-slotted Leveling Feet (2155-2836).
C. By checking the Site Planning Drawing, determine if you will be installing the
Exchanger on the left or right side of the Gantry.
D. For right-mounted Collimator Storage Unit, put the template:
1. at least 29” (74cm) from left wall, and at least 59” (150cm) from right wall,
2. preferably 14” (36cm) to rear wall (8” or 20cm minimum), and
3. parallel to left wall (unless you must angle the Gantry).
14"
Template
29"
Top View - Gantry Template Alignment (Right Exchanger)
1-7
Section 1
Gantry
E. For a left-mounted Collimator Storage Unit, put the template:
1. at least 36” (91cm) from right wall, and at least 59” (150cm) from left wall,
2. preferably 14” (36cm) to rear wall (8” or 20cm minimum), and
3. parallel to right wall (unless you must angle the Gantry).
14"
Template
36"
Top View - Gantry Template Alignment (Left Exchanger)
F. If you can access the underside of the steel plate (for through bolting):
1. Use the drill guide that comes with the template and use a 1/2" (13 mm) bit to
drill 16 holes through the 16 drill bushings (4 on each corner) clear through the
customer's floor-mounted steel plate.
Hint: Having an assistant stand in the center of the drill template will help
restrain the template from moving while you drill the 16 holes.
2. Remove the template.
3. Using a Leveling Foot as a template, remove the tile or similar material so the
anchor and the Leveling Foot will rest on the steel plate.
4. Use 1/2" (13 mm) bolts (grade A36, A307 or better) and appropriate washers
(3“ or 75 mm diameter 3/8” or 10 mm thick), lock washers and nuts to secure
the Leveling Feet to the customer's steel plate.
1-8
Section 1
Gantry
G. If you cannot access the underside of the steel plate and the plate is at least 1/2"
(13mm thick) -- so you must drill and tap:
1. Use the drill guide that comes with the template and use a 27/64” (10 mm) bit to
drill 16 holes through the 16 drill bushings (4 on each corner) clear through the
customer's floor-mounted steel plate.
2. Remove the template.
3. Using a Leveling Foot as a template, remove the tile or similar material so the
anchor and the Leveling Foot will rest on the steel plate.
4. Tap the holes with a 1/2" - 13 UNC (or appropriate metric) tap.
5. Use 1/2" (13 mm) bolts (grade A36, A307 or better) and appropriate washers
and lock washers to secure the Leveling Feet to the customer's steel plate.
H. Skip to part VII of this procedure.
1-9
Section 1
Gantry
VI. Drilling & Installing Anchors into a Concrete Floor
(Skip this section if you are installing the system on a steel plate.)
A. Verify that:
1. the floor under the Exchanger Rails is level and flat within ±1/8" (3 mm),
2. the floor under the Exchanger in the "exchange" position is at the same level as
the floor under the Gantry Leveling Feet within ±1/8" (3 mm), and
3. the floor under the four Patient Table Wheels is at the same level as the floor
under the Gantry within ±1/4" (6 mm).
4. Note: If the hospital installed a steel plate on top of the floor under the Gantry,
they must have also raised the floor level under the entire table by the same
amount (perhaps using grout).
To avoid an uneven floor tripping hazard, the hospital should have gradually
tapered the floor away from the Gantry/Exchanger/Table elevation.
B. By checking the Site Planning Drawing, determine if you will be installing the
Exchanger on the left or right side of the Gantry.
C. Obtain the Gantry Template (2155-3726).
Note: There are two types of Gantry Leveling Feet. Leveling Feet with round holes
(2155-2154 meet California seismic requirements. Leveling Feet with slightly
slotted holes (2155-2208) are easier to install; you may use slotted feet only for
non-seismic installations.
The above Gantry Template (2155-3726) will work with either type of Leveling
Feet.
Do not, however, use the older 2155-3702 Gantry Template with the newer
2155-2154 or 2155-2208 Leveling Feet. Also, do not use the newer 2155-3726
Template with older, large-slotted Leveling Feet (2155-2836).
1-10
Section 1
Gantry
D. For right-mounted Collimator Storage Unit, put template:
1. at least 29” (74cm) from left wall, and at least 59” (150cm) from right wall,
2. preferably 14” (36cm) to rear wall (8” or 20cm minimum), and
3. parallel to left wall (unless you must angle the Gantry).
14"
Template
29"
Top View - Gantry Template Alignment (Right Exchanger)
E. .For a left-mounted Collimator Storage Unit, put template:
1. at least 36” (91cm) from right wall, and at least 59” (150cm),
2. preferably 14” (36cm) to rear wall (8” or 20cm minimum), and
3. parallel to right wall (unless you must angle the Gantry).
14"
Template
36"
Top View - Gantry Template Alignment (Left Exchanger)
1-11
Section 1
Gantry
F. Using the drill guide that comes with the template and a 1/2" (13 mm) bit, drill 16
holes through the 16 drill bushings (4 on each corner); you must drill each hole at
least 4" or 10 cm deep (the anchors 3.5" embedment, the extra 1/2" allows for a little
slip before the anchor seats).
Hint: Having an assistant stand in the center of the drill template will help restrain
the template from moving while you drill the 16 pilot holes.
Note: If you cannot drill a 4" deep hole as required for Hilti Kwik-Bolt II anchors
(because the floor isn’t thick enough or the concrete isn’t 3,000 psi or better), you
must either:
1. use 1/2” (13 mm) through-bolts (grade A36, A307 or better) with nuts and 3“
(75 mm) diameter 3/8” (10 mm) thick washers on the underside of the floor, or
2. if you are on a poured on grade concrete slab, pour a quick setting cement (e.g.,
Rock Hard) into the hole, allow it to cure and drill into the Rock Hard to
achieve the 3.5" depth.
Note: If you hit rebar, you must cut thru the rebar by switching to a steel drill bit,
and starting with a small bit, work up to a large bit.
G. Remove the template.
H. Using a Leveling Foot as a template, remove the tile or similar material so the
anchor and the leveling foot will rest on the concrete.
Note: Because of the large vertical lift on the rear Leveling Feet and the overturn
moment on the front Leveling Feet (when the Detectors are 90° apart and the gantry
is at 90° or 270°), you must insert all 16 anchors in all four corners to their full depth
as described below.
1-12
Section 1
Gantry
VII. Install Leveling Feet and Gantry Support Legs
A. If there is any kind of “compressible” material (e.g., tile) covering the floor, do these
steps:
1. Without attaching the Leveling Feet and Gantry Support Legs to the anchors,
place the Leveling Feet and Gantry Support Legs in their correct positions over
the anchors; mark the outline of the Gantry Support Legs on the floor.
2. Remove the tile or similar material under the Gantry Support Legs so the Gantry
Support Legs will not be resting on tile.
B. Place the Leveling Feet over the anchor holes with the 10 mm holes toward the
outside (away from each other).
10 mm Holes
10 mm Holes
Top View - Leveling Feet Placement
C. If using anchors, snug all four Leveling Feet with the anchor bolts.
If using through-bolts into a steel floor plate, snug all four Leveling Feet with the
through-bolts and washers, lock washers and nuts on the under side.
If using screws and tapped holes in a steel floor plate, snug all four Leveling Feet
with the washers, lock washers and 1/2” - 13 UNC (or metric equivalent) screws.
1-13
Section 1
Gantry
D. Put the Gantry Support Legs on top of the Leveling Feet.
Ensure these holes
are towards the front.
Top View - Support Leg Position
E. Back off the leveling nuts (or screws) completely so Gantry Support Legs do not
touch the Leveling Feet; there should be at least 1/8” (3 mm) between Leveling Feet
and sides of Gantry Support Legs.
F. Put the Gantry Template on top of Gantry Support Legs.
G. Align Gantry Support Legs so:
1. the appropriate four holes in each Gantry Support Leg are under the correct four
holes in a square pattern on each side of template, and
2. each Gantry Support Leg is parallel to wall (unless you must angle the gantry).
H. Snug the bolts holding the Leveling Feet and remove Gantry Template.
1-14
Section 1
Gantry
VIII. Torque Testing
A. If using anchors to secure the Leveling Feet, torque the anchor bolts to 50 ft-lbs.
You should be able to reach the torque value within one-half turn of the nut.
WARNING: If the bolt pulls up so you do not get the minimum 3.5" (9 cm)
embedment, you must either contact (1) the Adac Installation Manager, or (2) the
customer's licensed structural engineer.
B. If using screws or through-bolts into a steel floor plate, torque all screws to 38 ft-lbs.
C. Attach the two 10 mm screws on each Leveling Foot and torque to 50 ft-lbs.
IX. Support Leg Leveling
A. Place the Gantry Support Legs on top of the Leveling Feet.
Note: This next step is very important!
If not done properly, you will not be able to properly align the Gantry and the
Exchanger!! Furthermore, you cannot redo this step after mounting the Gantry!!
B. Adjust the height adjusting screw on each of the Leveling Feet so the Gantry
Support Legs meet all three of the following specifications:
1. The top of the front Gantry Support Leg on the “Exchanger” side of the Gantry
is 105 mm above the floor tile.
Gantry Support Leg
Leveling Feet
105mm
Tile
Cement Floor
Front View - Support Leg Measurement
2. The Gantry Support Legs are 0.1° higher (0.2° for older Gantries built before
Nov 2000) in the front than in the back, as measured with a digital level with
0.01° precision (similar to Adac #9999-5307).
3. The Gantry Support Legs are level left/right.
C. To secure the leveling nut, install 17 mm screws in the tops of each leveling nut.
1-15
Section 1
Gantry
X. Mounting Gantry
A. Using the Dolly, place Gantry on top of Gantry Support Legs.
B. Use a 2.5” (6 cm) long drive and a 17 mm hex socket to bolt the Gantry to the
Gantry Support Legs (two bolts in rear, one in front, on each side). If you don’t have
a 2.5” long socket drive, you may have to remove the Roll Motion PCB and Roll
Motion Motor Controller in order to attach the bolts to the Gantry.
XI. Atlas Installation (on non-Power Pack systems)
A. Connect the large umbilical cable from the Atlas to the jack in the rear bottom of the
Gantry.
B. Run the small umbilical cable from the Atlas to the Mobile Acquisition Cart.
C. In the Shipkit, so you can use the Gantry before installing the Exchanger, find the
temporary cable (2155-5693) for connecting the Gantry to the Display Panel; run
that cable between the Gantry and the Display Panel.
D. On both Detector Mount Assemblies, locate the cable with the loose spade lugs;
either (1) tape those spade lugs so they won’t short out, or (2) remove that cable.
E. Plug the Atlas into a power source.
1-16
Section 1
Gantry
XII. Power Pack Installation
A. To mount the Power Pack unit on a Forte in which the Exchanger is on the left side
of the Gantry (viewed from front of Gantry), you must swap the "Collimator Cable
& Mobile Cart Cable" Tower and the "Disk Drive & Power Switch" Tower.
"Collimator Cable &
Mobile Cart Cable"
Tower
"Disk Drive &
Power Switch"
Tower
Rear View of Power Pack
B. To swap the two towers, remove four screws per tower, remove virtually all
tie-wraps, and allow 2 or 3 hours.
C. On the rear of a Power Pack Gantry, you will find two Flange Side Mounting
Brackets . You will secure the Power Pack to the Gantry with those brackets.
Flange Side
Mounting
Brackets
Rear View of Gantry
1-17
Section 1
Gantry
D. Slide the entire Power Pack unit sideways from its skid until the Power Pack unit is
over the Gantry Support Legs; ensure you have something under the rear of the
Power Pack unit (e.g., wood blocks) so you can leave a gap of about 15 inches (38
cm) between the Power Pack unit and the Gantry.
Rear View of Power Pack and Gantry
E. Connect these cables from the Power Pack unit to the Gantry:
Item
1
2
3
4
5
6
7
8
From Power Pack
J6
ROLL_LMT/BT2
ROLL_BRK
ENC/J1
MVT_SNSR/BS1
48v Power Supply AC Power Cord
60v Power Supply AC Power Cord
P13
1-18
To Gantry
Gantry Roll Limit PCB
Gantry Roll Limit PCB
Gantry Roll Clutch
Encoder on Gantry Roll Motor
Sensor Movement PCB on Gantry Roll Motor
Pigtail from Bottom Power Supply in PS Rack
Pigtail from Upper Power Supply in PS Rack
J23 (from Rick Sensor)
Section 1
Gantry
F. Connect these cables from the Gantry to the Power Pack:
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
From Gantry
TB2-1B
TB2-4B
TB2-9B
TB2-11B
TB1-8B
TB1-7B
J28 (gantry ring harness)
J9
MC/CAN Out
P3-1 (ring cable)
P3-2 (ring cable)
J8 (coax)
J9 (coax)
J6 (coax)
J7 (coax)
Net-2
Net-1
Spare coax
Ground wire
To Power Pack
Terminal Block TB2, block 1B
Terminal Block TB2, block 4B
Terminal Block TB2, block 9B
Terminal Block TB2, block 11B
Terminal Block TB1, block 8B
Terminal Block TB1, block 7B
P28
P9
Can-Bus Motor Controller
J1 (PIO board)
J2 (PIO board)
J8 (MCE board)
J9 (MCE board)
J6 (MCE board)
J7 (MCE board)
T-connector of Media Converter
T-connector of Media Converter
unconnected
GND-1 on bar above PDU
G. Carefully slide the Power Pack unit forward to within about 2" of the Gantry; ensure
no wires are caught between the Gantry and the Power Pack unit; push the Power
Pack unit against the Gantry so that the Power Pack unit's bottom lip goes over the
base of the Gantry.
Note: Ensure none of the metal connectors will touch the Collision board in the front
right side of the Power Pack unit.
H. Attach the Power Pack unit to the Gantry using four screws on top and two screws
into each of the Flange Side Mounting Brackets.
I. Run the small umbilical cable from the Atlas within the Power Pack to the Mobile
Acquisition Cart.
J. In the Shipkit, so you can use the Gantry before installing the Exchanger, find the
temporary cable (2155-5693) for connecting the Gantry to the Display Panel; run
that cable between the Gantry and the Display Panel.
K. On both Detector Mount Assemblies, locate the cable with the loose spade lugs;
either (1) tape those spade lugs so they won’t short out, or (2) remove that cable.
L. Plug the Forte into a power source.
1-19
Section 1
Gantry
XIII. PegUltra Installation
A. Network the Atlas, PegUltra and Gantry PC by referring to the Networking Manual
(9202-0148) and the software load manual.
B. Plug the PegUltra 60 into a power source.
XIV. Gantry Power Up
A. If there is no PegUltra in the camera room, interface a monitor and a keyboard to
Gantry PC.
If a PegUltra is nearby, do a remote Login to the Gantry PC from the PegUltra and
initiate the motdiag diagnostic (see procedure 9355-1016 or manual 9202-0162).
B. Power up the three breakers on back of Gantry.
C. Press the Override Button on the Display Panel.
D. When a message appears on the Display Panel indicating that Gantry Calibration is
necessary, press ENABLE to calibrate the system.
1-20
Section 1
Gantry
XV. Mounting Detectors on the Gantry
A. Using the Handcontrol, put Gantry Rotate at 180°; that will put the Detector #1
Mount Assembly at the bottom of the Gantry.
B. Remove the top of the crate containing Detector #1.
C. With a pallet jack, place the crate containing Detector #1 in front of the Gantry.
Note: Since the detectors are not interchangeable, ensure you working with Detector
#1 and Detector #1 Mount Assembly!
D. Verify that the small Collision and Actuator/Motor wires on the sides of the
Detector #1 Mount Assembly are taped in a position where you will not crush them
while attaching the Detector.
Collision or
Actuator/Motor
Wires
Collision or
Actuator/Motor
Wires
Detector #1 Mount Assembly
E. With the Handcontroller, move Detector #1 Radius up or down to coincide with the
height of the Detector #1 Side Plates.
1-21
Section 1
Gantry
F. Loosen, by one turn, each of the eight socket head screws that hold the Detector
Side Plates to the Detector Bucket. This will allow you some freedom in mating the
Detector Side Plates and the Detector Mount Assemblies in the next step.
Detector Side Plate
(1 of 2)
Socket Head Screw
(1 of 8)
G. With the pallet jack and being careful not to hit the Power Supply and Radius Motor,
slide the Detector and Crate toward the Detector Mount Assembly until the
mounting holes in the Detector Side Plate match up with corresponding holes in the
Detector Mount Assembly.
Note: In the next step, be very careful installing the bolts and pin (shoulder) bolts. It
is very easy to strip the threads.
1-22
Section 1
Gantry
H. On each side of the Detector, attach the Detector Side Plates to the Detector Mount
Assembly by installing M-16 x 40 bolts and D16 x 30 pin (shoulder) bolts in the
order shown below. Only hand tighten the bolts and pin bolts at this time.
Install Order
2
Pin Bolt
5
3
4
Bolt
Bolt
Bolt
1
Pin Bolt
I. Behind the Detect Mount Assembly, insert and hand tighten six 3/8"-16 x 2-1/4"
bolts.
3/8-16" Bolt
3/8-16" Bolt
3/8-16" Bolt
3/8-16" Bolt
3/8-16" Bolt
3/8-16" Bolt
1-23
Section 1
Gantry
J. Once the Detector is level, tighten the six bolts behind the Detector, and tighten the
three bolts and two pin bolts on each side of the Detector to these torque values:
the six M16 x 40 bolts on the sides: 150 ft-lbs
the six 3/8" bolts in the rear:
60 ft-lbs
the four pin bolts on the sides:
90 ft-lbs
K. Re-tighten, and torque to 60 ft-lbs, each of the eight socket head screws on the sides
of the Detector Side Plates that you previously loosen by one turn.
L. Remove the wood "caps" on the tops of the Detector Crate.
Wood "Caps"
M. Use the Handcontroller to move Detector #1 Radius "in" and lift the Detector above
the crate.
N. With the pallet jack and without the Crate Support Bars hitting the Detector Crate,
carefully remove the crate.
1-24
Section 1
Gantry
O. Remove the four Crate Support Bars, screws and washers; store them in the Detector
Crate for return to Adac.
Support Bars
P. With a 0.4995" reamer, ream the four center pin holes on Detector Side Plates.
Center Pin Holes
(1 of 4)
Q. Using a hammer, install four "press pins" (5100-8720) into the center pin holes.
R. Rotate the gantry to 0°; repeat the above steps for Detector #2.
1-25
Section 1
Gantry
XVI. Latch Plate Actuator
A. Install the Latch Plate Actuator by following the steps in:
1. Procedure 9343-2125 in ship kit 2155-3303 for Detector #1.
2. Procedure 9343-2126 in ship kit 2155-3304 for Detector #2.
XVII. Detector Wiring
A. Power off the Detectors by turning off the three breakers on the rear of the Gantry.
B. Connect all the other cables to each Detector.
C. Power on the Gantry and Detectors.
XVIII. Removing Shipping Bolt
Important. There is a shipping bolt that secures Detector #2 in the 180° position
relative to Detector #2. You must do the following step to remove that bolt before
attempting to put Detector #2 in the 90° relative position.
A. Rotate the Gantry to 0° so Detector #1 will be on top.
B. Locate the shipping bolt on the ring behind Detector #1.
Shipping Bolt
HD1
HD2
Rear View
C. Remove the shipping bolt and attach the bolt in a nearby location in case it ever
becomes necessary to move the gantry.
1-26
Section 1
Gantry
XIX. Gantry Roll Adjustment and Detector #2 Calibration
A. Perform the Gantry Roll and Zero Adjustments as described in the 9202-0162
manual, Section 3.
Note: When performing the Gantry Roll and Zero Adjustments in 9202-0162, ensure
you:
1. have a digital level with 0.01° accuracy (e.g., Adac #9999-5307), and
2. rotate the Gantry until Detector #1 is level within ± 0.08° before aligning the
SW1/SW4 board and adjusting the Roll Limit board.
B. Perform the Detector #2 Calibraton at Zero as described in the 9202-0162 manual,
Section 4.
Note: When performing the Detector #2 Calibration at Zero procedure in
9202-0162, ensure the Detector is level within ± 0.08°.
1-27
Section 1
Gantry
XX. Center of Rotation Measurement
A. With Gantry Rotate at 90 degrees, measure the distance from the floor to the center
of the Detector 1 Radius Acme Screw. This distance should be 112.5cm.
Center of Detector 1
Radius Acme Screw
102.5cm
112.5cm
10.5cm
Floor
Side View - 112.5cm Centor of Rotation Measurement
1. If the Center Of Rotation is 112.5 cm or more, record that height for use when
you set the height of the Exchanger.
2. If the Center of Rotation is less than 112.5 cm, you must contact the Field
Service Forte Technical Support team for help in redoing earlier installation
steps.
1-28
Section 2
Right Hand Exchanger
Section 2
Right Hand Forte Exchanger Installation Instructions
This section describes the installation of an Exchanger on the right side of the Gantry. If
you are installing an Exchanger on the left side of the Gantry, you must convert the
Exchanger for Left Side mounting as Section 3 describes.
I. Gantry Checks
A. Ensure the Gantry is level as Section 1 describes.
B. Ensure the Gantry Center of Rotation is 112.5 cm above the floor, or higher, as the
last page of Section 1 describes.
C. Power up the Gantry and Atlas.
D. Rotate the Gantry so Detector #1 is on top and Detector #2 is on the bottom.
E. With a level, ensure that Detector #1 is horizontal in the left/right direction. If it is
not horizontal, redo the Gantry Rotate at Zero adjustment (page 1-27, step #XIX.A).
F. With a level, ensure that Detector #2 is horizontal in the left/right direction. If it is
not horizontal, redo the Detector 2 Calibration at Zero (page 1-27, step #XIX.B).
G. If you haven't already, remove the Exchanger from pallet as Section 1 describes and
place the Exchanger near the right side of gantry.
Hint. Putting towels under the wheels makes the easier to move short distances.
H. Remove the Rear Exchanger Cover (but keep the Front Exchanger Cover on).
2-1
Section 2
Right Hand Exchanger
II. Display Panel Mounting
A. Mount the Display Panel / E-Stop Box by these steps:
1. Attach the E-Stop box to the Exchanger.
E-Stop Cover
E-Stop Box
Line up holes
Top of Exchanger
2. Remove the temporary Gantry-to-Display-Panel cable (2155-5693) that you
previously installed.
2-2
Section 2
Right Hand Exchanger
3. Attach the Display Panel to the E-Stop box and route the cables from the
Display Panel into the Exchanger.
Display
Panel
Display Panel, E-Stop and
Collimator Solenoid Release
cables go through knockout
on top of the Exchanger.
Display Panel & E-Stop Cable Installation
B. Dress Exchanger cables by following these steps:
1. Locate the coil of cables in the base of the Exchanger.
2. Route the cables up the front corner of the Exchanger and connect them to the
appropriate cables from the Display Panel and E-Stop Box.
2-3
Section 2
Right Hand Exchanger
III. Collimator Loading and Eccentric Checks
A. Load a short bore Collimator that the customer will frequently use (e.g., VXGP) on
each Detector, and adjust and Locktite the Collimator and Detector Eccentrics as
Appendix A describes.
B. Use a plumb line to see if the Detector #1 and Detector #2 Collimator Eccentrics are
vertically aligned. If not aligned, you must adjust Gantry Rotate.
Note: If these Eccentrics are not vertically aligned, you will not be able to perform
collimator exchanges.
Eccentric
Detector 1
Plumb-Line
Detector 2
Front View of Detector Vertical Alignment
C. With a level, verify that the sides of Detector #1 are vertical. If not, use motdiag to
rotate the Gantry until Detector #1 is vertical.
D. Also with a level, verify that the sides of Detector #2 are vertical. If not, use motdiag
to rotate Detector #2 until it is vertical.
2-4
Section 2
Right Hand Exchanger
IV. Pivot Attachment
A. Attach the Pivot mechanism to the Exchanger and Gantry by doing these steps:
1. Attach the Pivot mechanism to the Gantry Pivot Mount by positioning the bolts
in the centers of the slots in the Pivot Mechanism.
Right Side of Gantry
Center
Bolts
in Slots
Pivot Mechanism to Gantry Alignment
2-5
Section 2
Right Hand Exchanger
2. Attach the Pivot Arm to the Exchanger Mounting Plate by centering the bolts in
the slotted holes of the Pivot Arm.
Left Side of Exchanger
Center Bolts in
these holes.
Pivot Mechanism Alignment to Exchanger
B. Power down the Gantry.
C. Attach the Cable Harness to the Exchanger and the Gantry.
V. Temporary Rail Mounting
A. Power up the Gantry
B. Initiate motdiag as the Gantry Procedures Manual (9202-0162) describes.
C. Using motdiag, move the Exchanger back and forth between the Park and Exchange
positions until you can see tire marks on the floor.
D. Raise the Exchanger slightly and place the Exchanger Rails over the center of the
tire marks; temporarily secure the rails with an adhesive tape (like Duct Tape).
2-6
Section 2
Right Hand Exchanger
VI. Height and Level Adjustment
A. Exchanger Height and Level Check
1. Using motdiag, move the Exchanger to the Exchange position.
2. Measure the Exchanger’s “Center of Rotation” (indicated by the 2" round screw
midway between the center-most drawers).
2" round
screw
112.2cm
(w/o rails)
Iso View of Exchanger Centor of Rotation Adjustment
3. Place a digital level on the aluminum side plates (requires removing Rear
Exchanger Cover) and check the levelness of the Exchanger Base along both the
short axis and long axis. Both the short and long axis must be level within
±0.01°
4. If (1) the Exchanger's Center of Rotation is 112.2 cm, or equal to the actual
height of the Gantry’s Center of Rotation as measured on the last page of
Section 1, and (2) the exchanger is level in both planes, skip the Exchanger
Height and Level Adjustment instructions that follow.
2-7
Section 2
Right Hand Exchanger
B. Exchanger Height and Level Adjustment
1. To adjust the height of the Front Wheels, loosen the Locking Bolts inside the
Exchanger base and then turn the Leveling Screws to raise or lower the front of
the Exchanger.
Leveling Screws
Leveling Screws
Balancing Screws
Balancing Screws
Locking Bolt
Locking Bolt
Top View of Front of Exchanger
2. To raise the rear of Exchangers built after 10/30/99, loosen the two Standoffs on
the Rear Wheel Assembly, and turn the two 65 mm Cap Screws the same
number of turns to raise or lower the rear of the Exchanger.
Standoff
(2 places)
65 mm Cap Screw
(2 places)
Rear Wheel Assembly
Note: On Exchangers built before 10/30/99 (or on newer Exchangers where the
height cannot be increased enough) you can adjust the rear height of the
Exchanger by adding shims (washers) between the Rear Wheel Assembly and
the Exchanger.
2-8
Section 2
Right Hand Exchanger
VII. Exchanger Parallel to Detector
A. Using motdiag, put the Exchanger in the "Exchange" position.
B. By measuring the ring-side and outside gaps, ensure that the Exchanger "face" is
parallel to, and 50 mm from, the side of Detector #2 Side Plate.
Outside gap (50mm)
Ring-side gap (50mm)
Exchanger
Top View of Exchanger and Detector
C. If the Exchanger is not parallel to the Gantry, back the Exchanger away slightly and
adjust the "Exchange" position of the Exchanger by turning the Stop Bolt on the
Gantry-mounted part of the Pivot.
Stop Bolt
Gantry-Mounted part of Pivot
Note: After turning the Stop Bolt, use motdiag to move the Exchanger twice
between the Park and Exchanger positions, and then verify the distance again.
2-9
Section 2
Right Hand Exchanger
VIII. Pivot Limit Switches
A. Install the Limit Switch on the Pivot Mechanism as shown on the illustration below.
Black Wire
White Wire
Red Wire
Rear View of Stacked Switches
White Wire
Black Wire
Red Wire
Limit Switches
(stacked)
Shallow Detent
Position Slip Wheel
Gantry
Exchanger
Deep Detent
Top Front View of Pivot Mechanism
B. Using motdiag move the Exchanger to the Exchange position.
C. Verify that the Exchanger stops where the Exchanger Face is perpendicular to the
Gantry.
D. Rotate the Position Slip Wheel clockwise until it lines up with the Exchange Sensor
and you hear a relay click from inside the Gantry base plate; if you hear a second
click you have gone too far. Another way to verify alignment is to check the
CollExchInExchPos bit in motdiag to see if it is high (1).
2-10
Section 2
Right Hand Exchanger
IX. Long Axis Vertical Check
A. See if the distances from the Exchanger "face" (front cover attached) to the nearest
sides of both Detector #1 and #2 are 62 mm ± 2 mm (long axis vertical check).
62 mm
62 mm
Front View of Gantry, Long Axis Vertical Check
B. If the distances from the Exchanger "face" to both detectors are not the same (±2
mm), change the Exchanger vertical axis by readjusting height of the Rear Wheel
Assembly as described previously.
C. If the distance from the Exchanger "face" to the side of Detector #2 is not 62 mm ±
2 mm, do the following:
1. Determine the direction (in or out) and the number of millimeters you need to
move the Pivot with respect to the Exchanger.
2. Loosen the screws that attach the Pivot to the Exchanger, and, using a rubber
mallet, move the Pivot Mount the desired distance and direction.
Note: To make adjustments easier, place one piece of masking tape on top of the
Pivot Mount and a second piece of tape on the side of the Exchanger near the
first piece. With a pen, place marks on the tape so you measure movement.
Place tape here
Pivot Mount
Exchanger
Exchanger side of Pivot
3. After moving the Pivot Mount, snug its mounting screws, move the Exchanger
between the "Exchanger" and "Park" position twice and recheck the distance.
When you reach the correct position, tighten the Pivot mounting screws.
2-11
Section 2
Right Hand Exchanger
X. Short Axis Position
A. Check to see if the distance from the Exchanger to the Gantry is 118 mm ± 2 mm.
Exchanger
118 mm
Top View of Exchanger and Detector in Exchange Position
B. If the distance from the Exchanger to the Gantry is not 118 mm ± 2 mm, do the
following:
1. Determine the direction (in or out) and the number of millimeters you need to
move the Pivot with respect to the Gantry.
2. Loosen the screws that attach the Pivot to the Gantry and place "movement
reference marks" on pieces of tape on the Gantry and Pivot as described above.
3. Using a rubber mallet, move the Pivot Mount the desired distance and direction.
Place tape here
Gantry
Pivot
Gantry side of Pivot
4. After each time you move the Exchanger, snug the Pivot mounting screws,
move the Exchanger back and forth between the "Exchanger" and "Park"
position twice and recheck the distance.
5. When you reach the correct position, tighten the Pivot mounting screws.
2-12
Section 2
Right Hand Exchanger
XI. Drawer 1 & 8 Alignment
A. With motdiag, put the Exchanger in the "Exchange" position.
B. If you haven't already, remove the Rear Cover of the Exchanger.
C. Manually extend the lowest and highest drawers (drawers 1 and 8) by these steps:
1. Radius both Detectors to their maximum outer limits.
2. While standing at the rear of the Exchanger, lift the Master Lock Plate Solenoid
and the attached Master Lock Plate with one hand and simultaneously lift the
Top Drawer Locking Plate; push the Collimator Drawer out with one of your
thumbs. The Collimator Drawer is now unlocked and released.
Master Lock Plate Solenoid
Plane1
Plane1
Plane1
Plane1
Plane1
Plane4
Plane1
Bottom Drawer Lock Plate
Top Drawer Lock Plate
Master Lock Plate (attached to Solenoid)
Rear View of Exchanger
3. Go to the front of the Exchanger and continue extending the two Drawers until
they lock in the out position.
2-13
Section 2
Right Hand Exchanger
D. Stand at the side of the Gantry where you can see the Collimators from a side view.
In the next two sentences, an Eccentric is "captured" if its Collimator Support
Bracket is between the Eccentric "Lip" and the side of the Collimator as shown
below.
For the upper Collimator, ensure that each of the four Eccentrics are "captured" by a
U-notch (rear) Collimator Support Bracket or a V-notch (front) Collimator Support
Bracket on the upper drawer.
For the lower Collimator, ensure that all four Eccentrics are "captured" by both
"hooks" on each of the Drawer Slides on the lower drawer.
Upper Detector
Eccentric "Lip"
U-Notch (rear)
or V-Notch (front)
Collimator Support
Bracket
Collimator
Drawer #8
Drawer #1
"Hook"
on Drawer
Slide
Collimator
Eccentric "Lip"
Lower Detector
Side View of "Captured" Eccentrics
(Upper & Lower Collimators)
E. If any of the eight eccentrics are not "captured", you must adjust (1) the Pivot Stop
Bolt, (2) the Pivot Mount on Exchanger, or (3) the Pivot Mount on Gantry.
Note: If you cannot position the Exchanger to capture all eight Eccentrics, set the
Exchanger to capture the four Eccentrics on the lower Collimator; then change the
shims for the upper Collimator U- and V- notch Collimator Support Brackets as
described in Appendix B.
Note: If you change the Pivot Stop Bolt or Pivot Mount, move the Exchanger back
and forth twice, and then re-verify the position. After you complete the above steps,
if you subsequently change the Exchanger height, you must repeat the above and all
subsequent alignments.
2-14
Section 2
Right Hand Exchanger
XII. Titting Upper Drawers
A. With a digital level, see if the upper drawers (drawers #5 - 8) are 0.2° higher front to
rear (to allow for sag when carrying collimators).
1. If upper drawers are not 0.2° higher in front, adjust the upper drawers by these
steps:
a) Inside the Exchanger, for the drawer you want to adjust, identify the
leveling screws (underneath) and locking screws (on top) on both rear sides
of the drawer.
Locking Screw
Locking Screw
Round Bar
(Fixed)
Leveling Screw
Leveling Screw
Rear Underside View of Drawer
b) Since the Round Bar is fixed, when you turn a leveling screw in, you will
be forcing the rear of the Drawer down. Thus:
(1) To raise the front of drawer, loosen both locking screws and turn both
leveling screws clockwise.
(2) To lower the front of the drawer, loosen both locking screws and turn
both leveling screws counterclockwise.
(3) When you get the front 0.2° higher on both sides, tighten both locking
screws.
2-15
Section 2
Right Hand Exchanger
XIII. Leveling Lower Drawers
A. With a digital level, see if the lower drawers (drawers #1 - 4) are level (not 0.2°
higher in front) doing similar steps.
1. If lower drawers are not level, adjust the lower drawers by these steps:
a) Inside the Exchanger, for the drawer you want to adjust, identify the
leveling screws (underneath) and locking screws (on top) on both rear sides
of the drawer.
Locking Screw
Locking Screw
Round Bar
(fixed)
Plane5
Leveling Screw
Leveling Screw
Rear Underside View of Drawer
b) Since the Round Bar is fixed, when you turn a leveling screw in, you will
be forcing the rear of the Drawer down. Thus:
(1) To raise the front of drawer, loosen both locking screws and turn both
leveling screws clockwise.
(2) To lower the front of the drawer, loosen both locking screws and turn
both leveling screws counterclockwise.
(3) When you get the drawer level, tighten both locking screws.
2-16
Section 2
Right Hand Exchanger
XIV. Upper Drawer U- and V-Notch Adjustment
A. While the Exchanger is in the “Exchange” position, manually extend Drawer #8 and
as previously described.
B. While standing in front of the Gantry, radius in Detector #1 until the Collimator
Eccentrics touch the V-Notch. The center of the Collimator Eccentrics should be
1mm to the left of the bottom of the V-Notches on the front of the Collimator
Drawer.
Eccentric 1 mm left of V-notch center
Detector 1
Collimator Drawer
Front View of Collimator Eccentrics and Collimaor Drawer V-Notch
C. If the Eccentrics are not 1 mm to the left of each V-Notch, but they are close to that
position (within ± 2mm), adjust the V-Notch Collmator Support Bracket sideways
so the Eccentrics are 1 mm to the left of each V-Notch.
V-notch Collimator Support Bracket
D. If the Eccentrics are not 1 mm to the left of the V-Notches and they not close to that
position (more than ± 2mm), change the mounting position of the Pivot on the
Exchanger. These changes are described earlier (Section 2, page 2-11, step #9.C).
Note: If you change the Pivot position, move the Exchanger back and forth
twice, and then re-verify the position.
XV. Mounting the Exchanger Rails
A. On the floor, mark the holes in the rails; drill appropriate sized holes and attach the
rails with concrete screws.
2-17
Section 2
Right Hand Exchanger
XVI. Collimator Unloading
A. If you are working with just the first two collimators (on drawers 8 and 1), extend
drawer #8 and skip to the next page.
B. If you are working with the rest of the collimators, identify which drawers are to
receive the collimators currently on the Detectors.
Head 1
Head 2
Drawers
8
7 Head 1
6 Collimators
5
4
3 Head 2
2 Collimators
1
Right Hand Exchanger
Drawer
8
7
6
5
Head
HD1
HD1
HD1
HD1
Collimators
Short Bore
Short Bore
Short Bore, Long Bore
Short Bore, Long Bore, MCGP Shield
4
3
2
1
HD2
HD2
HD2
HD2
Short Bore, Long Bore, MCGP Shield, Pin Hole (w/drawer 5 removed)
Short Bore, Long Bore
Short Bore
Short Bore
C. While the Exchanger is in the “Exchange” position, manually extend the appropriate
Drawer as previously described.
2-18
Section 2
Right Hand Exchanger
D. Transfer the Collimator from Head #1 to a Collimator Drawer by doing these steps:
1. Lower Head #1 until the Eccentrics touch the U- and V-Notches.
2. With the Collimator on the drawer, readjust the tilt of the drawer, if necessary,
until the Collimator is parallel to the crystal as viewed from both the right side
of the Gantry and by looking through the Exchanger from the left.
Parallel
Parallel
Upper Detector
Collimator
Drawer #8
Side View of Upper Detector
3. With the Hand Controller, radius the detector in so the Collimator Latch is
ready to grab the Collimator Eccentrics, but the Collimator is still attached to
the Detector (tray unloaded).
4. Note the radius position in motdiag and record below:
Drawer #
Collimator Type
Radius Value (tray unloaded)
8 (top) _____________
__________
7
_____________
__________
6
_____________
__________
5
_____________
__________
5. Use the following motdiag commands to drive the Latch Plate Actuator to
unlatch the Collimator onto the Drawer:
a) Select M (set motion) until Motion = Det1 Lock Bar Ringside
b) Select D (set motor direction) until Unlock appears.
c) Press S to activate the Det 1 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
d) Select M (set motion) until Motion = Det1 Lock Bar Outside
e) Select D (set motor direction) until Unlock appears.
f) Press S to activate the Det 1 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
6. Raise the Detector slightly and push the Drawer into the Exchanger.
2-19
Section 2
Right Hand Exchanger
E. Transfer the Collimator from Head #2 to a Collimator Drawer by doing these steps:
1. Extend drawer #1 and raise Detector #2 until the Detector starts to push the
drawer up, then back off until you are no longer lifting the drawer.
2. Note the radius position in motdiag and record below:
Drawer #
Collimator Type
Radius Value (tray unloaded)
1 (bottom)
_____________
__________
2
_____________
__________
3
_____________
__________
4
_____________
__________
3. Looking from the right side of the Gantry, ensure the Lock Bar clears the Latch.
Lock Bar
Clearance
Latch
View of Lower Detector from the Side of the Gantry
4. Use the following motdiag commands to drive the Latch Plate Actuator to
unlatch the Collimator onto the Drawer:
a) Select M (set motion) until Motion = Det2 Lock Bar Ringside
b) Select D (set motor direction) until Open appears.
c) Press S to activate the Det 2 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
d) Select M (set motion) until Motion = Det2 Lock Bar Outside
e) Select D (set motor direction) until Open appears.
f) Press S to activate the Det 2 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
5. Lower the Detector slightly and push the Drawer into the Exchanger.
2-20
Section 2
Right Hand Exchanger
XVII. Collimator Loading
A. Load one more pair of Collimators onto their respective Detectors.
B. Adjust the Collimator Eccentrics (not the Detector Eccentrics) for those Collimators
(see related instructions in Appendix A).
C. Using those Collimators, adjust drawer tilt for each Upper and Lower drawer, record
the radius at the appropriate Detector position and unload those Collimators as
previously described.
D. Repeat the above steps for all collimators.
Note: If customer ordered a Pin Hole Collimator for a right-hand Exchanger, you
must:
1. leave drawer #5 vacant
2. remove the Latch Pin and Pin Actuator on drawer #5 (see procedure 9355-0142
on Titan in the "users/gbell/Forte" directory), and
3. load the Pin Hole Collimator in drawer #4 with the pin hole pointed upwards.
XVIII. Collimator Stop Blocks (Lower Drawers)
A. If you have troubleloading a Collimator on a Lower Drawer, recheck the levelness
of the Exchanger (page 2-7, step #VI.A), or recheck the Gantry Rotate at Zero
adjustment (page 1-27, step #XIX.A).
Warning: Never grind or file a Collimator Stop Block.
Plane5
Collimator
Stop Block
Collimator
Stop Block
Rear Underside View of a Lower Drawer
Grinding or filing a Collimator Stop Block may cause an Collimator to drop!!!!!
2-21
Section 2
Right Hand Exchanger
XIX. Software Collimator Identification / Measurements
A. Store Collimator Locations and Detector Radius positions by doing these steps:
1. On the Acquisition Terminal, select the “Exit to DOS” option.
2. Type: atlasutl
3. At the blue terminal emulator screen, select: 2
(Login into Atlas)
4. Press: <CR>
5. At the login prompt, type: root
6. At the password prompt, type: adacsu
7. Type: cd /usr/local/gantry/bin
8. Type: gntconfig
9. At the "Press Return to Start Step 1" prompt, press: <CR >
10. At the "Is Collimator Exchanger on the Left" prompt, type: N
11. At the "Is Collimator Exchanger on the Right" prompt, type: Y
12. At the "Shall Outer Room Procedure Be Allowed" prompts, type Y or N
depending on whether there is enough room to allow Detector #2 to go to the
outer room position without hitting something.
13. At the "Shall Stretcher (gurney) Procedures Be Allowed" prompts, type Y or N
depending on whether there is enough room to allow a gurney to fit sideways
under the detectors.
14. At the "QC Acquisition Be Allowed" prompts, type Y or N depending on
whether there is enough room to place a source 8 ft away from detectors in
those positions.
15. At the "Vantage" and "MCD-AC" prompts, reply appropriately.
16. At the "Shall MCD-AC Exchanges Be Done" prompts, specify the side opposite
to the Exchanger where operators can place the MCD-AC Source Removal
Tool.
17. At the "What is the Radius for MCD Sources", and "What is the USD Position"
prompts, use the defaults (those will have to be inserted during MCD-AC
installation.
18. At the "When Loading a Patient, Should the Table..." prompts, select the
response that the customer prefers (either to make it easy, or disallow, patients
to step on the base of the table when getting on the Table).
2-22
Section 2
Right Hand Exchanger
19. At the "Press Return to Start Step 2" prompt, press: <CR >
20. From the list of Collimators, specify which collimator will be in each drawer.
21. When prompted type the Radius positions for each Collimator noted on the
previous pages (but insert the same number for "installing" and "removing").
22. Repeat the last two steps for each collimator, or accept the defaults.
Note: If you have made a mistake during the above, and you wish to exit
without saving your prompts, press "CTRL" and "C". To return to the
Acquisition Menu, type "Exit" at the Atlas prompt, press the "F10" key at the
Login prompt, and type "menu".
23. If you have entered everything correctly, save the data when prompted.
B. Reset the Gantry PC by simultaneously holding these keys:
Slow Enable, Start, P-Scope Erase
C. To backup your gntconfig data, perform these steps:
1. Repeat steps 2 through 7 above.
2. Put a formatted ZIP disk into the Atlas ZIP drive.
3. Type: mount /zip
4. Type: mkdir /zip/gantry_config
5. Type: cd /zip/gantry_config
6. Type: cp -p /usr/local/gantry/etc/config.devices.local /zip/gantry_config
7. Type: cd /
8. Type: umount zip
9. Type: exit
2-23
Section 2
Right Hand Exchanger
XX. Earthquake Outrigger Installation (California only)
Note: Adac recommends Earthquake Outriggers be installed in seismic areas (e.g.,
California). However, the California OSHPD office does not require Outriggers on
Adac's Forte Exchanger.
A. In the earthquake shipkit, locate the four Outriggers and associated screws.
B. Attach the four Outriggers to the Exchanger.
Exchange Frame
Outriggers
Outriggers
Exchange Frame with Outriggers
C. Adjust each Outrigger so the bottom of the Outrigger is not more 1/4" (6 mm) above
the floor in the “park” position.
D. Verify that the bottom of the Outriggers do not scrape against the floor as the
Exchanger moves from the “park” to the “load/unload” position.
If the Outriggers scrape the floor, you must use a combination of shims under the
rails and adjustments of the Outriggers so the Outriggers (1) won’t scrape the floor,
and (2) won’t be higher than 1/4" (6 mm) above the floor in the “park” position.
2-24
Section 3
Left Hand Exchanger
Section 3
Left Hand Forte Exchanger Installation Instructions
This section describes the installation of an Exchanger on the left side of the Gantry.
Installing an Exchanger on the left requires special modifications to the Exchanger and
several procedural changes. This section describes these changes.
I. Gantry Checks
A. Ensure the Gantry is level as Section 1 describes.
B. Ensure the Gantry Center of Rotation is 112.5 cm above the floor, or higher, as the
last page of Section 1 describes.
C. Power up the Gantry and Atlas.
D. Rotate the Gantry so Detector #2 is on top and Detector #1 is on the bottom.
E. With a level, ensure that Detector #1 is horizontal in the left/right direction. If it is
not horizontal, redo the Gantry Rotate at Zero adjustment (page 1-27, step #XIX.A).
F. With a level, ensure that Detector #2 is horizontal in the left/right direction. If it is
not horizontal, redo the Detector 2 Calibration at Zero (page 1-27, step #XIX.B).
G. If you haven't already, remove the Exchanger from pallet as Section 1 describes and
place the Exchanger near the right side of gantry.
Hint. Putting towels under the wheels makes the easier to move short distances.
H. Remove the Rear Exchanger Cover (but keep the Front Exchanger Cover on).
3-1
Section 3
Left Hand Exchanger
II. Left-side Exchanger Changes
A. Do these steps so the Gantry software will know you will be installing the
Exchanger on the left side of the Gantry:
1. Power up the Gantry and Atlas.
2. On the Atlas keyboard, select: Exit to DOS
3. Type: atlasutl
4. At the blue terminal emulator screen, select: 2
(Login into Atlas)
5. Press: <CR>
6. At the login prompt, ype: root
7. At the password prompt, type: adacsu
8. Type: cd /usr/local/gantry/bin
9. Type: gntconfig
10. At the "Press Return to Start Step 1" prompt, press: <CR >
11. Type: Left
12. At the "Is Collimator Exchanger on the Left" prompt, type: Y
13. At the "Is Collimator Exchanger on the Right" prompt, type: N
14. Press <RET> to use the defaults for the rest of the questions; you will fill in
other information after determining the Collimator Exchange Radius positions.
15. Type: Y to Save your configuration when prompted.
3-2
Section 3
Left Hand Exchanger
B. Do these steps to orient the Front Exchanger Wheels for Left-side option::
1. With a jack, lift the Exchanger so it is slightly off the floor and insert blocks (or
similar material) under the Exchanger so you can safely work underneath the
Exchanger.
2. To change the front wheels, remove the bolts from the Right-Hand holes.
Leveling Screws
Leveling Screws
Balancing Screws
Balancing Screws
Left-Hand Hole
Right-Hand Hole
Locking Bolt
Right-Hand Hole
Locking Bolt
Left-Hand Hole
Top View of Front of Exchanger
3. Rotate front wheels so the mounting holes line up with the Left-Hand holes.
4. Install and tighten bolts in the Left-Hand holes. Leave Exchanger elevated for
the next step.
3-3
Section 3
Left Hand Exchanger
C. To orientate the Rear Drive Wheel for Left-Hand Exchange, do these steps:
1. Remove the two bolts securing the Motor Drive to the Base of the Exchanger.
2. Rotate the Rear Drive Wheel 300 degrees and reattach the Motor Drive to the
Exchanger Base.
Bolt Hole
Bolt Hole
Top View Right Hand Exchange - drive motor mounting placement
Bolt Hole
Bolt Hole
Top View Left Hand Exchange - drive motor mounting placement
3. Lower the Exchanger to floor.
3-4
Section 3
Left Hand Exchanger
III. Display Panel Mounting
A. Remove the knockout for E-Stop box on left top of the Exchanger.
Knockout for Left-Sided
E-Stop /Display Boxes
Top View of Exchanger
3-5
Section 3
Left Hand Exchanger
B. Mount the Display Panel / E-Stop Box by these steps:
1. Attach the E-Stop box to the Exchanger.
E-Stop Cover
E-Stop Box
Line Up Holes
Top of Exchanger
2. Remove the temporary Gantry-to-Display-Panel cable (2155-5693) that you
previously installed.
3-6
Section 3
Left Hand Exchanger
3. Attach the Display Panel to the E-Stop box and route the cables from the
Display Panel into the Exchanger.
Display
Panel
E_Stop Box
Display Panel, E-Stop and
Collimator Solenoid Release
cables through which go through
the knockout on top of the Exchanger.
Exchanger Side
Display Panel & E-Stop Cable Installation
C. Dress Exchanger cables by following these steps:
1. Locate the coil of cables in the base of the Exchanger.
2. Route the cables up the front corner of the Exchanger and connect them to the
appropriate cables from the Display Panel and E-Stop Box.
3-7
Section 3
Left Hand Exchanger
IV. Collimator Loading and Eccentric Checks
A. Load a short bore Collimator that the customer will frequently use (e.g., VXGP) on
each Detector, and adjust and Locktite the Collimator and Detector Eccentrics as
Appendix A describes.
B. Use a plumb line to see if the Detector #1 and Detector #2 Collimator Eccentrics are
vertically aligned. If not aligned, you must adjust Gantry Rotate.
Note: If these Eccentrics are not vertically aligned, you will not be able to perform
collimator exchanges.
Eccentric
Detector 2
Plumb-Line
Detector 1
Front View of Detector Vertical Alignment
C. With a level, verify that the sides of Detector #1 are vertical. If not, use motdiag to
rotate the Gantry until Detector #1 is vertical.
D. Also with a level, verify that the sides of Detector #2 are vertical. If not, use motdiag
to rotate Detector #2 until it is vertical.
3-8
Section 3
Left Hand Exchanger
V. Pivot Attachment
A. Attach the Pivot mechanism to the Exchanger and Gantry by doing these steps:
1. Attach the Pivot mechanism to the Gantry Pivot Mount by positioning the bolts
in the centers of the slots in the Pivot Mechanism.
Left Side of Gantry
Center
Bolts
in Slots
Pivot Mechanism to Gantry Alignment
3-9
Section 3
Left Hand Exchanger
2. Attach the Pivot Arm to the Exchanger Mounting Plate by centering the bolts in
the slotted holes of the Pivot Arm.
Right Side of
Exchanger
Center Bolts in these holes
Pivot Arm to Exchanger Alignment
B. Power down the Gantry.
C. Attach the Cable Harness to the Exchanger and the Gantry.
VI. Temporary Rail Mounting
A. Power up the Gantry
B. Initiate motdiag as the Gantry Procedures Manual (9202-0162) describes.
C. Using motdiag, move the Exchanger back and forth between the Park and Exchange
positions until you can see tire marks on the floor.
D. Raise the Exchanger slightly and place the Exchanger Rails over the center of the
tire marks; temporarily secure the rails with an adhesive tape (like Duct Tape).
3-10
Section 3
Left Hand Exchanger
VII. Height and Level Adjustment
A. Exchanger Height and Level Check
1. Using motdiag, move the Exchanger to the Exchange position.
2. Measure the Exchanger’s “Center of Rotation” (indicated by the 2" round screw
midway between the center-most drawers).
2" round
screw
112.2cm
(w/o rails)
Iso View of Exchanger Centor of Rotation Adjustment
3. Place a digital level on the aluminum side plates (requires removing Rear
Exchanger Cover) and check the levelness of the Exchanger Base along both the
short axis and long axis. Both the short and long axis must be level within
±0.01°
4. If (1) the Exchanger's Center of Rotation is 112.2 cm, or equal to the actual
height of the Gantry’s Center of Rotation as measured on the last page of
Section 1, and (2) the exchanger is level in both planes, skip the Exchanger
Height and Level Adjustment instructions that follow.
3-11
Section 3
Left Hand Exchanger
B. Exchanger Height and Level Adjustment
1. To adjust the height of the Front Wheels, loosen the Locking Bolts inside the
Exchanger base and then turn the Leveling Screws to raise or lower the front of
the Exchanger.
Leveling Screws
Leveling Screws
Balancing Screws
Balancing Screws
Locking Bolt
Locking Bolt
Top View of Front of Exchanger
2. To raise the rear of Exchangers built after 10/30/99, loosen the two Standoffs on
the Rear Wheel Assembly, and turn the two 65 mm Cap Screws the same
number of turns to raise or lower the rear of the Exchanger.
Standoff
(2 places)
65 mm Cap Screw
(2 places)
Rear Wheel Assembly
Note: On Exchangers built before 10/30/99 (or on newer Exchangers where the
height cannot be increased enough) you can adjust the rear height of the
Exchanger by adding shims (washers) between the Rear Wheel Assembly and
the Exchanger.
3-12
Section 3
Left Hand Exchanger
VIII. Exchanger Parallel to Detector
A. Using motdiag, put the Exchanger in the "Exchange" position.
B. By measuring the ring-side and outside gaps, ensure that the Exchanger "face" is
parallel to, and 50 mm from, the side of Detector #2 Side Plate.
Outside gap (50mm)
Ring-side gap (50mm)
Exchanger
Top View of Exchanger and Detector
C. If the Exchanger is not parallel to the Gantry, back the Exchanger slightly away and
adjust the "Exchange" position of the Exchanger by turning the Stop Bolt on the
Gantry-mounted part of the Pivot.
Stop Bolt
Gantry-Mounted part of Pivot
Note: After turning the Stop Bolt, use motdiag to move the Exchanger twice
between the Park and Exchanger positions; verify the distance again.
3-13
Section 3
Left Hand Exchanger
IX. Pivot Limit Switches
A. Install the Limit Switch on the Pivot Mechanism as shown on the illustration below.
Black Wire
White Wire
Red Wire
Rear View of Stacked Switches
White Wire
Shallow Detent
Black Wire
Red Wire
Limit Switches
(stacked)
Position Slip Wheel
Gantry
Exchanger
Deep Detent
Top Front View of Pivot Mechanism
B. Using motdiag move the Exchanger to the Exchange position.
C. Verify that the Exchanger stops where the Exchanger Face is perpendicular to the
Gantry.
D. Rotate the Position Slip Wheel clockwise until it lines up with the Exchange Sensor
and you hear a relay click from inside the Gantry base plate; if you hear a second
click you have gone too far. Another way to verify alignment is to check the
CollExchInExchPos bit in motdiag to see if it is high (1).
3-14
Section 3
Left Hand Exchanger
X. Long Axis Vertical Check
A. See if the distances from the Exchanger "face" (front cover attached) to the nearest
sides of both Detector #1 and #2 are 62 mm ± 2 mm (long axis vertical check).
62 mm
62 mm
Front View of Gantry, Long Axis Vertical Check
B. If the distances from the Exchanger "face" to both detectors are not the same (±2
mm), change the Exchanger vertical axis by readjusting height of the Rear Wheel
Assembly as described previously.
C. If the distance from the Exchanger "face" to the side of Detector #2 is not 62 mm ±
2 mm, do the following:
1. Determine the direction (in or out) and the number of millimeters you need to
move the Pivot with respect to the Exchanger.
2. Loosen the screws that attach the Pivot to the Exchanger, and, using a rubber
mallet, move the Pivot Mount the desired distance and direction.
Note: To make adjustments easier, place one piece of masking tape on top of the
Pivot Mount and a second piece of tape on the side of the Exchanger near the
first piece. With a pen, place marks on the tape so you measure movement.
Place tape here
Pivot Mount
Exchanger
Exchanger side of Pivot
3. After moving the Pivot Mount, snug its mounting screws, move the Exchanger
between the "Exchanger" and "Park" position twice and recheck the distance.
When you reach the correct position, tighten the Pivot mounting screws.
3-15
Section 3
Left Hand Exchanger
XI. Short Axis Position
A. Check to see if the distance from the Exchanger to the Gantry is 118 mm ± 2 mm.
Exchanger
118 mm
Top View of Exchanger and Detector in Exchange Position
B. If the distance from the Exchanger to the Gantry is not 118 mm ± 2 mm, do the
following:
1. Determine the direction (in or out) and the number of millimeters you need to
move the Pivot with respect to the Gantry.
2. Loosen the screws that attach the Pivot to the Gantry and place "movement
reference marks" on pieces of tape on the Gantry and Pivot as described above.
3. Using a rubber mallet, move the Pivot Mount the desired distance and direction.
Place tape here
Gantry
Pivot
Gantry side of Pivot
4. After each time you move the Exchanger, snug the Pivot mounting screws,
move the Exchanger back and forth between the "Exchanger" and "Park"
position twice and recheck the distance.
5. When you reach the correct position, tighten the Pivot mounting screws.
3-16
Section 3
Left Hand Exchanger
XII. Drawer 1 & 8 Alignment
A. With motdiag, put the Exchanger in the "Exchange" position.
B. If you haven't already, remove the Rear Cover of the Exchanger.
C. Manually extend the lowest and highest drawers (drawers 1 and 8) by these steps:
1. Radius both Detectors to their maximum outer limits.
2. While standing at the rear of the Exchanger, lift the Master Lock Plate Solenoid
and the attached Master Lock Plate with one hand and simultaneously lift the
Top Drawer Locking Plate; push the Collimator Drawer out with one of your
thumbs. The Collimator Drawer is now unlocked and released.
Master Lock Plate Solenoid
Plane1
Plane1
Plane1
Plane1
Plane1
Plane4
Plane1
Bottom Drawer Lock Plate
Top Drawer Lock Plate
Master Lock Plate (attached to Solenoid)
Rear View of Exchanger
3. Go to the front of the Exchanger and continue extending the two Drawers until
they lock in the out position.
3-17
Section 3
Left Hand Exchanger
D. Stand at the side of the Gantry where you can see the Collimators from a side view.
In the next two sentences, an Eccentric is "captured" if its Collimator Support
Bracket is between the Eccentric "Lip" and the side of the Collimator as shown
below.
For the upper Collimator, ensure that each of the four Eccentrics are "captured" by a
U-notch (rear) Collimator Support Bracket or a V-notch (front) Collimator Support
Bracket on the upper drawer.
For the lower Collimator, ensure that all four Eccentrics are "captured" by both
"hooks" on each of the Drawer Slides on the lower drawer.
Upper Detector
Eccentric "Lip"
U-Notch (rear)
or V-Notch (front)
Collimator Support
Bracket
Collimator
Drawer #8
Drawer #1
"Hook"
on Drawer
Slide
Collimator
Eccentric "Lip"
Lower Detector
Side View of "Captured" Eccentrics
(Upper & Lower Collimators)
E. If any of the eight eccentrics are not "captured", you must change (1) the Pivot Stop
Bolt, (2) the Pivot Mount on Exchanger, or (3) the Pivot Mount on Gantry.
Note: If you cannot position the Exchanger to capture all eight Eccentrics, set the
Exchanger to capture the four Eccentrics on the lower Collimator; then change the
shims for the upper Collimator U- and V- notch Collimator Support Brackets as
described in Appendix B.
Note: If you change the Pivot Stop Bolt or Pivot Mount, move the Exchanger back
and forth twice, and then re-verify the position. After you complete the above steps,
if you subsequently change the Exchanger height, you must repeat the above and all
subsequent alignments.
3-18
Section 3
Left Hand Exchanger
XIII. Tilting Upper Drawers
A. With a digital level, see if the upper drawers (drawers #5 - 8) are 0.2° higher front to
rear (to allow for sag when carrying collimators).
1. If upper drawers are not 0.2° higher in front, adjust the upper drawers by these
steps:
a) Inside the Exchanger, for the drawer you want to adjust, identify the
leveling screws (underneath) and locking screws (on top) on both rear sides
of the drawer.
Locking Screw
Locking Screw
Round Bar
(Fixed)
Leveling Screw
Leveling Screw
Rear Underside View of Drawer
b) Since the Round Bar is fixed, when you turn a leveling screw in, you will
be forcing the rear of the Drawer down. Thus:
(1) To raise the front of drawer, loosen both locking screws and turn both
leveling screws clockwise.
(2) To lower the front of the drawer, loosen both locking screws and turn
both leveling screws counterclockwise.
(3) When you get the front 0.2° higher on both sides, tighten both locking
screws.
B. With a digital level, see if the lower drawers (drawers #1 - 4) are level (not 0.2°
higher in front) doing similar steps.
3-19
Section 3
Left Hand Exchanger
XIV. Leveling Lower Drawers
A. With a digital level, see if the lower drawers (drawers #1 - 4) are level (not 0.2°
higher in front) doing similar steps.
1. If lower drawers are not level, adjust the lower drawers by these steps:
a) Inside the Exchanger, for the drawer you want to adjust, identify the
leveling screws (underneath) and locking screws (on top) on both rear sides
of the drawer.
Locking Screw
Locking Screw
Round Bar
(fixed)
Plane5
Leveling Screw
Leveling Screw
Rear Underside View of Drawer
b) Since the Round Bar is fixed, when you turn a leveling screw in, you will
be forcing the rear of the Drawer down. Thus:
(1) To raise the front of drawer, loosen both locking screws and turn both
leveling screws clockwise.
(2) To lower the front of the drawer, loosen both locking screws and turn
both leveling screws counterclockwise.
(3) When you get the drawer level, tighten both locking screws.
3-20
Section 3
Left Hand Exchanger
XV. Upper Drawer V-Notch Adjustment
A. While the Exchanger is in the “Exchange” position, manually extend Drawer #1 and
as previously described.
B. While standing in front of the Gantry, radius in Detector #2 until the Collimator
Eccentrics touch the V-Notch. The center of the Collimator Eccentrics should be
1mm to the right of the bottom of the V-Notches on the front of the Collimator
Drawer.
Eccentric 1 mm right of V-notch center
Detector 2
Collimator Drawer
Front View of Collimator Eccentrics and Collimaor Drawer V-Notch
C. If the Eccentrics are not 1 mm to the right of the V-Notch, but they are close to that
position (within ± 2mm), adjust the V-Notch Collmator Support Bracket sideways
so the Eccentrics are 1 mm to the left of each V-Notch.
V-notch Collimator Support Bracket
D. If the Eccentrics are not 1 mm to the right of the V-Notches and they not close to
that position (more than ± 2mm), change the mounting position of the Pivot on the
Exchanger. These changes are described earlier (Section 2, page 2-11, step #9.C).
Note: If you change the Pivot position, move the Exchanger back and forth
twice, and then re-verify the position.
XVI. Mounting the Exchanger Rails
A. On the floor, mark the holes in the rails; drill appropriate sized holes and attach the
rails with concrete screws.
3-21
Section 3
Left Hand Exchanger
XVII. Collimator Unloading
A. If you are working with just the first two collimators (on drawers 8 and 1), extend
drawer #8 and skip to the next page.
B. If you are working with the rest of the collimators, identify which drawers are to
receive the collimators currently on the Detectors.
Drawers
8
Head 2
7
Collimators 6
5
4
Head 1
3
Collimators 2
1
Head 2
Head 1
Left Hand Exchanger
Drawer
8
7
6
5
Head
HD2
HD2
HD2
HD2
Collimators
Short Bore
Short Bore
Short Bore, Long Bore
Short Bore, Long Bore, MCGP Shield, Pin Hole (W/drawer 4 removed)
4
3
2
1
HD1
HD1
HD1
HD1
Short Bore, Long Bore, MCGP Shield
Short Bore, Long Bore
Short Bore
Short Bore
C. While the Exchanger is in the “Exchange” position, manually extend the appropriate
Drawer as previously described.
3-22
Section 3
Left Hand Exchanger
D. Transfer the Collimator from Head #2 to a Collimator Drawer by doing these steps:
1. Lower Head #2 until the Eccentrics touch the U- and V-Notches.
2. With the Collimator on the drawer, readjust the tilt of the drawer, if necessary,
until the Collimator is parallel to the crystal as viewed from both the right side
of the Gantry and by looking through the Exchanger from the left.
Parallel
Parallel
Upper Detector
Collimator
Drawer #8
Side View of Upper Detector
3. With the Hand Controller, radius the detector in so the Collimator Latch is
ready to grab the Collimator Eccentrics, but the Collimator is still attached to
the Detector (tray unloaded).
4. Note the radius position in motdiag and record below:
Drawer #
Collimator Type
Radius Value (tray unloaded)
8 (top) _____________
__________
7
_____________
__________
6
_____________
__________
5
_____________
__________
5. Use the following motdiag commands to drive the Latch Plate Actuator to
unlatch the Collimator onto the Drawer:
a) Select M (set motion) until Motion = Det2 Lock Bar Ringside
b) Select D (set motor direction) until Unlock appears.
c) Press S to activate the Det 2 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
d) Select M (set motion) until Motion = Det2 Lock Bar Outside
e) Select D (set motor direction) until Unlock appears.
f) Press S to activate the Det 2 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
6. Raise the Detector slightly and push the Drawer into the Exchanger.
3-23
Section 3
Left Hand Exchanger
E. Transfer the Collimator from Head #1 to a Collimator Drawer by doing these steps:
1. Extend drawer #1 and raise Detector #1 until the Detector starts to push the
drawer up, then back off until you are no longer lifting the drawer.
2. Note the radius position in motdiag and record below:
Drawer #
Collimator Type
Radius Value (tray unloaded)
5
_____________
__________
6
_____________
__________
7
_____________
__________
8
_____________
__________
3. Looking from the right side of the Gantry, ensure the Lock Bar clears the Latch.
Lock Bar
Clearance
Latch
View of Lower Detector from the Side of the Gantry
4. Use the following motdiag commands to drive the Latch Plate Actuator to
unlatch the Collimator onto the Drawer:
a) Select M (set motion) until Motion = Det1 Lock Bar Ringside
b) Select D (set motor direction) until Open appears.
c) Press S to activate the Det 1 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
d) Select M (set motion) until Motion = Det1 Lock Bar Outside
e) Select D (set motor direction) until Open appears.
f) Press S to activate the Det 1 Latch Plate Actuator; as soon as the slide
plates reach the fully out position, press Space Bar to Stop actuator.
5. Lower the Detector slightly and push the Drawer into the Exchanger.
3-24
Section 3
Left Hand Exchanger
XVIII. Collimator Loading
A. Load one more pair of Collimators onto their respective Detectors.
B. Adjust the Collimator Eccentrics (not the Detector Eccentrics) for those Collimators
(see related instructions in Appendix A).
C. Using those Collimators, adjust drawer tilt for each Upper and Lower drawer, record
the radius at the appropriate Detector position and unload those Collimators as
previously described.
D. Repeat the above steps for all collimators.
Note: If customer ordered a Pin Hole Collimator, for a left-hand Exchanger, you
must:
1. leave drawer #4 vacant
2. remove the Latch Pin and Pin Actuator on drawer #4 (see procedure 9355-0142
on Titan in the "users/gbell/Forte" directory), and
3. load the Pin Hole Collimator in drawer #5 with the pin hole pointed downwards.
XIX. Collimator Stop Blocks (Lower Drawers)
A. If you have troubleloading a Collimator on a Lower Drawer, recheck the levelness
of the Exchanger (page 3-11, step #VII.A), or recheck the Gantry Rotate at Zero
adjustment (page 1-27, step #XIX.A).
Warning: Never grind or file a Collimator Stop Block.
Plane5
Collimator
Stop Block
Collimator
Stop Block
Rear Underside View of a Lower Drawer
Grinding or filing a Collimator Stop Block may cause an Collimator to drop!!!!!
3-25
Section 3
Left Hand Exchanger
XX. Software Collimator Identification / Measurements
A. Store Collimator Locations and Detector Radius positions by doing these steps:
1. On the Acquisition Terminal, select the “Exit to DOS” option.
2. Type: atlasutl
3. At the blue terminal emulator screen, select: 2
(Login into Atlas)
4. Press: <CR>
5. At the login prompt, type: root
6. At the password prompt, type: adacsu
7. Type: cd /usr/local/gantry/bin
8. Type: gntconfig
9. At the "Press Return to Start Step 1" prompt, press: <CR >
10. At the "Is Collimator Exchanger on the Left" prompt, type: Y
11. At the "Is Collimator Exchanger on the Right" prompt, type: N
12. At the "Shall Outer Room Procedure Be Allowed" prompts, type Y or N
depending on whether there is enough room to allow Detector #2 to go to the
outer room position without hitting something.
13. At the "Shall Stretcher (gurney) Procedures Be Allowed" prompts, type Y or N
depending on whether there is enough room to allow a gurney to fit sideways
under the detectors.
14. At the "QC Acquisition Be Allowed" prompts, type Y or N depending on
whether there is enough room to place a source 8 ft away from detectors in
those positions.
15. At the "Vantage" and "MCD-AC" prompts, reply appropriately.
16. At the "Shall MCD-AC Exchanges Be Done" prompts, specify the side opposite
to the Exchanger where operators can place the MCD-AC Source Removal
Tool.
17. At the "What is the Radius for MCD Sources", and "What is the USD Position"
prompts, use the defaults (those will have to be inserted during MCD-AC
installation.
18. At the "When Loading a Patient, Should the Table..." prompts, select the
response that the customer prefers (either to make it easy, or disallow, patients
to step on the base of the table when getting on the Table).
3-26
Section 3
Left Hand Exchanger
19. At the "Press Return to Start Step 2" prompt, press: <CR >
20. From the list of Collimators, specify which collimator will be in each drawer.
21. When prompted type the Radius positions for each Collimator noted on the
previous pages (but insert the same number for "installing" and "removing").
22. Repeat the last two steps for each collimator, or accept the defaults.
Note: If you have made a mistake during the above, and you wish to exit
without saving your prompts, press "CTRL" and "C". To return to the
Acquisition Menu, type "Exit" at the Atlas prompt, press the "F10" key at the
Login prompt, and type "menu".
23. If you have entered everything correctly, save the data when prompted.
B. Reset the Gantry PC by simultaneously holding these keys:
Slow Enable, Start, P-Scope Erase
C. To backup your gntconfig data, perform these steps:
1. Repeat steps 2 through 7 above.
2. Put a formatted ZIP disk into the Atlas ZIP drive.
3. Type: mount /zip
4. Type: mkdir /zip/gantry_config
5. Type: cd /zip/gantry_config
6. Type: cp -p /usr/local/gantry/etc/config.devices.local /zip/gantry_config
7. Type: cd /
8. Type: umount zip
9. Type: exit
3-27
Section 3
Left Hand Exchanger
XXI. Earthquake Outrigger Installation (California only)
Note: Adac recommends Earthquake Outriggers be installed in seismic areas (e.g.,
California). However, the California OSHPD office does not require Outriggers on
Adac's Forte Exchanger.
A. In the earthquake shipkit, locate the four Outriggers and associated screws.
B. Attach the four Outriggers to the Exchanger.
Exchange Frame
Outriggers
Outriggers
Exchange Frame with Outriggers
C. Adjust each Outrigger so the bottom of the Outrigger is not more 1/4" (6 mm) above
the floor in the “park” position.
D. Verify that the bottom of the Outriggers do not scrape against the floor as the
Exchanger moves from the “park” to the “load/unload” position.
If the Outriggers scrape the floor, you must use a combination of shims under the
rails and adjustments of the Outriggers so the Outriggers (1) won’t scrape the floor,
and (2) won’t be higher than 1/4" (6 mm) above the floor in the “park” position.
3-28
Section 4
Table
Section 4
Forte Table Installation Instructions
I. Introduction
Although you may do this procedure with covers installed on the Table, it is easier to do
without the covers. Therefore, if the Table arrives without covers, leave them off until you
calibrate and fully test the table. If the table arrives with covers installed, leave them on
during this procedure.
This instruction assumes you have already installed the Gantry and Collimator Exchanger.
II. Removing Table From Skid
A. Locate the four 1/2" shipping bolts that suspend the Table above the skid.
B. Turn the 1/2" shipping bolts to lower the Table down on the skid; remove the wooden
brackets from which the Table was hanging.
C. Use the ramp that comes with the Table to move the Table sideways off the skid.
4-1
Section 4
Table
III. Removing Shipping Bracket
A. Locate the two bright yellow shipping brackets under the handle-end of the Table.
B. Remove the yellow shipping brackets, but save the screws.
C. In the shipping packaging, locate the End Cap Cover (2155-2757).
D. Install the End Cap Cover using the screws removed from the yellow shipping
brackets.
End Cap
E. Push the Tower forward until the Tower re-couples with the Y-Axis (Longitudinal)
belt.
4-2
Section 4
Table
IV. Table Levelness Adjustment
A. Find in the Table Shipkit, 32 Caster Shims (2155-2275).
Note: In the next several steps you will temporarily insert some of the Caster Shims
under the Table Wheels. You will be shimming the Wheels until the Table (1) won’t
“rock”, (2) will be level in two directions, and (3) is at the correct height. After the
table meets these three criteria, you will permanently mount the Caster Shims between
the Caster and the bottom of the Table.
B. Ensure the Table is pinned in its correct location.
C. Rocking Correction:
1. Ensure all four Table Wheels are touching the ground by trying to “rock” the
table from each corner.
2. If the Table “rocks”, temporarily insert enough Caster Shims under one wheel to
stop the rocking motion.
Caster Shim
(under Caster)
4-3
Section 4
Table
D. Levelness Correction (“long” direction):
1. Place a level along the length of each of the Table Rails.
Level along length
of Table Rail
2. If the Table is not level in the “long” direction, temporarily add Caster Shims
under the Wheels until the Table Rails are level in the long direction.
Caster Shim
(under Caster)
4-4
Section 4
Table
E. Levelness Correction (“short” direction):
1. Place a level between both Table Rails near the front of the Table.
Note: You’ll need to place equally sized objects (at least 3/4” high) on both Table
Rails to get the level high enough to strattle the Cable Cover in the middle of the
Table.
Level between
the Table Rails
Object
(3/4" high or greater)
(one on each rail)
2. If the Table is not level in the “short” direction, temporarily add Caster Shims
under the Wheels until the Table Rails are level both at the front and at the rear
ends of the Table Rails.
Note: Leave the Caster Shims under the Table Wheels until you complete the Vertical
Adjustments in the next section.
4-5
Section 4
Table
V. Center of Rotation Vertical Adjustment
Note: Perform this procedure with collimators (any type) on the detectors.
A. Rotate the Gantry to 0° with the Detectors 180° apart.
B. On either the Acquisition Terminal or Peg Ultra Terminal, initiate Motdiag as Section
2 of the 9202-0162 Manual describes.
C. With the Handcontroller, move Detector #1 Radius until the Det1Radius on the
Motdiag screen (not the Display Panel) reads 400 mm.
D. Ensure the Table is pinned in its correct location.
E. Ensure the Table is centered in the left/right direction (Table Lateral X on Display
Panel is 0).
F. With the Handcontroller, raise or lower the table until the Table Height Z on the
Display Panel is 0.
G. With the Handcontroller, translate the Patient Pallet all the way into the Gantry (Table
Translate is 0).
H. With a pencil, mark the center of the Patient Pallet at a point about 16 cm from the
Table Tower.
Center of
Patient
Pallet
~ 16 cm
Top View - Table
4-6
Section 4
Table
I. Put a straight edge under the centerline of the Collimator, push up on the Collimator
Cover to remove cover sag and measure the distance in centimeters from the center of
the Patient Pallet to the face of the Collimator (Pallet-to-Collimator distance).
Scale
Pallet-to-Collimator Distance
Straight Edge
Center of
Patient Pallet
J. Compare the measured Pallet-to-Collimator distance to the Detector #1 Radius value
shown on the Display Panel.
K. With the Handcontroller, raise or lower the Patient Pallet until the Pallet-to-Collimator
distance is the same as the Detector #1 Radius.
L. Note the value for Table Height Z on the Display Panel. That value is the amount you
must raise the table with Caster Shims.
M. Since each Caster Shim is 0.15 cm, determine the number of Caster Shims you need
to achieve the height determined in the last step and place that number of Caster
Shims under each wheel.
N. With the Handcontroller, lower the Table Pallet until the Table Height Z on the
Display Panel is 0.
4-7
Section 4
Table
O. Verify that (1) the Table is level in both direction, (2) all wheels are touching the floor
(no rocking) and (3) the measured Pallet-to-Collimator distance is equal to the
Detector #1 Radius value on the Display Panel when the Det1Radius value in Motdiag
is 400 mm.
P. Remove all Caster Shims from under each wheel and permanently mount those shims
between the Caster and the underside of the Table for each wheel using the longer
screw provided in the Table Shipkit.
Caster Shim
(above Caster)
4-8
Section 4
Table
VI. Floor Pin Attachment
A. In the shipping package, locate the two Floor Pin Mechanisms and Mount Brackets.
Mount Bracket
Floor Pin Mechanism
B. Locate the Floor Pin mounting holes on same side of the Table as the Exchanger.
Floor Pin Mechanisms
(same side as Exchanger)
Top View of Table & Floor Pins
C. Place each Mount Bracket on the Table so the vertical edge of the Mount Bracket will
be about 5 mm beyond the edge of the Table Side Cover; use four hex bolts to attach
the Mount Brackets to the Table.
Edge of Table Side Cover
Mount Bracket
End View of Table and Mount Bracket
4-9
Section 4
Table
D. With the Pin fully retracted, attach the Floor Pin Mechanisms to the Mount Brackets;
mount the Mechanisms as far off the floor as possible (you’ll adjust their height later);
attach each Mechanisms with two screws; snug the screws.
Screw position so mechanisms
is as far off floor as possible
Mount Bracket
Floor Pin Mechanism
E. After ensure the Floor Pin Mechanisms are absolutely vertical; tighten the mounting
screws.
Mechanism
must be
vertical
Floor Pin Mechanism
F. If necessary, move the Electrical Connection Panel and power connection to the
opposite side of the Table from the Floor Pins.
4-10
Section 4
Table
VII. Table Power Up
A. If the Gantry is not already powered up, power up the Gantry.
B. Rotate the Gantry so Detector #1 is on top and Detector #2 is on the bottom.
C. Place the Table in approximately the correct position in front of the Gantry.
D. Attach the large cable from the Gantry to the Table.
E. Remove the terminator from the lower left connector on the Can-Bus Controller board
in the Gantry PC; connect the Table Can-Bus Signal cable in place of the terminator.
Note: Tie-wrap the terminator to the Table Can-Bus Signal cable so someone can find
it again.
F. When the “Table Calibration” message appears on the Display Panel, press ENABLE
to automatically calibrate the Table.
4-11
Section 4
Table
VIII. Pallet Centering
A. With the Handcontroller, translate the Patient Pallet Tower to its fully retracted
position,
B. With the Handcontroller, move the Patient Pallet left or right to center the Pallet with
respect to the base of the Pallet Tower.
Base of Table
Pallet Centerline
Top View of Table
4-12
Section 4
Table
IX. Longitudinal Table Location
A. Lower the Pallet Tower in its lowest position.
B. Place the Table so the end of the Patient Pallet is 5" (12.7 cm) from the Detector #2
Latch Plate.
Detector #2 Latch Plate
Patient Pallet
5"
Side View of Gantry and Table
C. Mark this location on the floor so you can keep the Table 5” from the Detector #2
Latch Plate.
4-13
Section 4
Table
X. Left -Right Table Location
A. Rotate the Gantry 90° so the Detectors are on the sides of the Patient Pallet.
B. Obtain two 2" x 4" x 4" wood blocks and temporarily tape them to the sides of the
pallet 90 cm from the front of the pallet. (In a later step, you’ll use these blocks to
pivot the table around the center of the Patient Pallet.)
90 cm
2" x 4" Wood Block
2" x 4" Wood Block
Top View of Table
C. With the handcontroller, translate the Patient Pallet into the Gantry until the wood
blocks are at the horizontal center of the Collimators; raise the Patient Pallet until the
wood blocks are also at the vertical center of the Collimators.
D. Keeping the Detector Radii equal, move the Detectors in until the Collimator Covers
touch the wood blocks.
Centerline of Collimators
Wood Blocks
Top View of Table and Detectors
E. Advance both Detectors in 0.5 cm to place tension on the wood blocks and restrain the
center of the Patient Pallet so you can pivot around it.
4-14
Section 4
Table
F. Check the near-side and far-side gaps between the both Collimators and the Patient
Pallet; if the four gaps are not the same, rotate the Table using the Wood Blocks as a
turning point until all four gaps are the same and the sides of the Patient Pallet are
parallel to the faces of the crystals.
Gap
Gap
Gap
Gap
Top View of Table and Detectors
G. Temporarily restrain the Table by pushing the plunger down on both Floor Pin
Mechanisms (even though you have not yet drilled holes for the floor pins).
Plunger
Floor Pin Mechanism
4-15
Section 4
Table
H. Verify the Table is correctly centered by doing these steps:
1. Move both Detector Radii out to 20 cm and remove the Wood Blocks.
2. With the Handcontroller, extend the Patient Pallet 12" (30 cm) into the Gantry.
3. While keeping the Table 5" from the Detector #2 Latch Plate, verify the gaps
between the sides of the Patient Pallet and the Detector crystals are the same.
12"
Gap same on both
sides of the Pallet
Gap same on both
sides of the Pallet
Top View of Gantry and Table
4. With the Handcontroller, extend the Patient Pallet 36” (91 cm) into the Gantry.
5. Check the gaps between the sides of the Patient Pallet and the Detector crystals
again. If the gaps are not the same, carefully twist the Table until the gaps are the
same.
6. With the Handcontroller, extend the Patient Pallet all the way into the Gantry.
7. Again, check the gaps between the sides of the Patient Pallet and the Detector
crystals. If the gaps are not the same, carefully twist the Table until the gaps are
the same, but keep the Table 5” from the Detector #2 Latch Plate.
8. With the Handcontroller, return the Patient Pallet until it is again just 12” into the
Gantry.
9. Check the gaps again. If the gaps are the same and the Table is still 5” from the
Detector #2 Latch Plate, you have the Table parallel to the Detectors and
correctly placed.
4-16
Section 4
Table
XI. Floor Pin Drilling
A. Ensure the Floor Pin Mechanisms are absolutely vertical.
Mechanism
must be
vertical
Floor Pin Mechanism
B. With either a felt-tip marker or by pressing hard enough on the Floor Pins to mark
their location on the floor, mark the location of the front Floor Pin on the floor.
C. Move both Detectors away from the Table, retract the Patient Pallet and move the
Table away from the mark on the floor.
D. Place a Floor Plate over the center of the mark on the floor; inscribe a circle inside the
center hole of the Floor Plate.
E. Drill a 1-1/4” (3 cm) diameter hole about 1” (2.5 cm) deep at the marked location.
F. Reposition the Table, insert the front Floor Pin into the hole you just drilled, mark the
location of the rear Floor Pin and repeat the last four steps for the rear Floor Pin.
G. Reposition the Table, place each Floor Plate over one of the new holes and push both
Floor Pins into the new holes; while the Floor Plates are thus centered with respect to
the Floor Pins, inscribe a line on the tile around the outside of each Floor Plate.
H. Move the Table away from the holes in the floor.
I. Mark the locations for the mounting screws for each Floor Plate.
J. Drill holes for concrete screws.
K. Attach the Floor Plates to the floor with concrete screws.
4-17
Section 4
Table
XII. Floor Pin Height Adjustment
A. Place the Table in its position and push the plunger down so the Floor Pins will be
fully extended into the holes in the floor.
Plunger
Floor Pin Mechanism
B. Adjust the height of each Floor Pin Mechanism until the Pin Sensors are completely
depressed.
Pin Sensor
Floor Pin Mechanism
C. Note: If the two mounting screws on either Floor Pin Mechanism are at the bottom of
the Mount Bracket slots and the Pin Sensor is not completely depressed, you must
insert shims (washers) between the Mount Bracket and the bottom of the Table until
you can completely depress the Pin Sensor.
D. Depress and release each Floor Pin several times to verify ease of operation.
E. Using motdiag, verify that the sensors function correctly.
F. Extend the table completely into the Gantry and apply approximately 200 lbs (90 Kg)
to the end of the table; verifying in motdiag that both pins still function correctly.
G. While still applying 200 lbs to the end of the table, translate the Table out of the
Gantry; monitoring the sensors in motdiag to ensure the sensors do not change.
Note: If either of the last two steps indicate a sensor problem, you must readjust the
position of the Floor Pin Mechanism and repeat the above tests.
4-18
Section 4
Table
XIII. IV Pole Installation
A. Place the IV Pole as shown in the illustration below.
IV Pole
4-19
.
Section 5
Cover and Testing
Section 5
Forte Cover and Testing Instructions
I. Detector Calibration
A. For non-MCD cameras, perform Detector Calibration as Field Service Manual
9202-0101 describes.
B. For MCD or MCD-AC cameras, perform Detector Calibration as Field Service Manual
9202-0126 describes.
II. Cover Installation
A. Install the Detector Faraday Cage and Covers as procedure 9343-1584 specifies.
B. Install Gantry covers as procedure 9343-1584 specifies.
C. Install Exchanger covers as procedure 9343-1584 specifies.
D. Install Table covers as the Forte Table Manual (9202-0163) specifies.
III. Testing
A. Motion Tests
1. Exercise all gantry motions and check for excessive noise, vibration, uneven
motion or coasting.
2. Execute each preprogrammed option while observing Motdiag. Display Panel
parameter values more than 1 mm different than Motdiag values indicate potential
problems.
3. Perform a collimator exchange with all available collimators while checking each
collimator collision sensor.
If exchanges do not function correctly, check gantry and exchanger alignment, and
check/change detector radius values to ensure you have the detector in the right
position for each collimator.
5-1
Section 5
Cover and Testing
B. E-Stop Tests
Verify that all E-stop switches (gantry, exchanger, table, handcontrol and
acquisition terminal) will stop gantry motions.
C. Gantry Collision Tests
1. Ensure the system is not in a "collision” mode (override light not lit).
2. While rotating the gantry with the handcontroller, initiate a collision by pressing on
the collision pad within the gantry bore.
3. Verify that the motion stops.
4. Check the input voltage to the 60 volt Power Supply by doing these steps:
a) On a Forte Power Pack:
(1) Locate the power cord that leads from the Power Pack into the gantry and
has an IEC connector labeled, "60V, PS-P4” which connects to another
connector labeled, "120 VAC Input to 60 VDS PS”..
(2) Disconnect those connectors.
(3) With a voltmeter, verify that 120 VAC is not present in the "60V, PS-P4”
connector.
(4) Reconnect the IEC connectors.
b) On a Forte with Atlas:
(1) Locate the filter on the right rear wall of the Forte Gantry that has an
output cable going to the 60 volt DC power supply.
(2) With a voltmeter, verify that 120 VAC is not present on the output of the
filter terminals going to the 60 volt DC power supply.
5. Verify that hardware, not software, removed the input voltage to the 60 volt Power
Supply by doing these steps:
a) On the Acquisition Terminal, select the option to ”Exit to DOS”.
b) At the acquire prompt, type: atlasutl
c) At the emulator screen, select: 10 (Telnet)
d) At the next screen, select: 2 (connect)
e) Enter the node name (e.g., atlas1gantry on non-network system, or uniquely
assigned node name on networked system)
f) At the -> prompt, type: devGet "EstopControl”
5-2
Section 5
Cover and Testing
g) Ensure ”EstopControl Target Value is 0.000000
h) Log out by typing: logout
i) Hold down the ALT key and press: X
j) At the emulator screen, select: 0 (Quit)
k) To get to the menus, type: menu
6. Repeat steps 1 through 4 while moving the Detector Radius with the
handcontroller.
D. Final Clinical Tests
1. ETC Study. Acquire a "Thallium-ECT” procedure as the Forte Operator’s Manual
describes using a point source. Verify acquisition by displaying raw data.
2. Total Body Study. Acquire a "Total-Body” procedure as the Forte Operator’s
Manual describes using a point source. Verify acquisition by displaying raw data.
5-3
.
Appendix A
Detector Eccentrics
Appendix A
Adjusting Collimator and Detector Eccentrics
The factory sets and Loctites the Eccentrics on all Collimators. However, they do not Loctite
the Detector Eccentrics.
You will probably have to adjust and Loctite the Eccentrics on all Collimators and the
Eccentrics on both Detectors.
Collimator
Eccentric
Collimator
Eccentric
Detector
Eccentric
Detector
Eccentric
Overview. During a Forte installation, you should do the following general steps (which the
rest of this Appendix describes in more detail):
• Adjust and Loctite the Collimator Eccentrics on the pair of Collimators that the
customer will use most often (i.e., VXGP).
• For the detector whose collimators will reside in the bottom of the Exchanger (Head #2
for a right hand Exchanger, or Head #1 for a left hand Exchanger), install the
Collimator that the customer will use most often (i.e., VXGP).
• Adjust and Loctite the Detector Eccentrics to match that Collimator.
• Repeat the last two steps for the other Detector.
• Get the Exchanger installed and working (as described in Section 2 and 3 of this
manual).
• One at a time, mount all other Collimators on their Detectors, and adjust and Loctite
their Collimator Eccentrics to work with the Detector Eccentrics (without changing the
Detector Eccentrics).
A-1
Appendix A
Detector Eccentrics
I. Adjusting the Front and Rear Collimator Eccentrics on the First Collimator
A. Uncrate the pair of most frequently used Collimators (e.g. VXGP).
B. Inspect the position of the outside and ring-side Collimator Eccentrics for this pair of
collimators.
If the small holes in the outside and ring-side Collimator Eccentrics face toward the
center of the Detector, you do not need to adjust the Eccentrics; skip to step #II.
If the small holes in all four Collimator Eccentrics do not face toward the center, you
must adjust the Eccentrics as described below.
Small holes in
Collimator Eccentrics
facing towards
center of detector
A-2
Appendix A
Detector Eccentrics
C. To adjust the outside and ring-side Collimator Eccentrics:
1. Ensure you have the Adac Eccentric Tool (2146-3700).
2. Remove the Allen-head screw holding Eccentric you want to adjust.
Allen-head
screw
3. Apply Loctite to the Allen-head screw and reinstall; leave the screw loose enough
that you can turn the Eccentric.
4. Place the Eccentric Tool over the Eccentric and engage the small pin of the tool
with the small hole in the Eccentric.
5. With the tool, rotate each Eccentric so the small hole faces toward the inside of the
Detector.
Note: For the Collimators that you are installing in the lower drawers of the
Exchanger (drawers #1 - 4), it is especially important that you adjust the Collimator
Eccentrics so the small holes face towards the center of the detector. If you do not
do this, you may have to file metal from the Collimator Capture Blocks on the
Exchanger Trays.
6. Tighten Allen head screw with 27 in-lbs, or 150 cm-kg, of torque.
7. Check the position of the Eccentrics for the other VXGP (or most frequently used
Collimator), and adjust and Loctite as necessary.
A-3
Appendix A
Detector Eccentrics
II. Loading the First Collimator
A. For a right hand Exchanger, rotate the Gantry to 0° (so Head #2 will be at the bottom
facing up).
B. For a left hand Exchanger, rotate the Gantry to 180° (so Head #1 will be at the bottom
facing up).
C. On the rear of the bottom Detector, remove the Radius Contact Sense cover so you can
see the rear Detector Eccentrics.
D. Run motdiag and activate the Privilege Mode by these steps:
1. Activate motdiag as described in FS Manual 9202-0162, or procedure 9355-1016.
2. Activate the Priviledge Mode by these steps:
a) Press: CTRL P
b) Press the Space Bar
c) On the Handcontroller, slowly press in sequence (a few seconds apart):
Start, Stop, Pause and Resume.
E. To open the front (outside) Lock Bar, do these steps in motdiag:
1. Press: M (set motion) until you get
Det1 Lock Bar (outside) or
Det2 Lock Bar (outside) (depending on which Detector you have at the bottom).
2. Press: D (set motor direction) until Unlock appears.
3. While holding the front Latch Pin down with one hand (see below), press the S
(start motion) key with the other hand until the Det1OutsideBarUnlock field
changes from a 0 to a 1, then press the Spacebar to stop the motor.
Hold down Latch Pin
A-4
Appendix A
Detector Eccentrics
F. To open the rear (ring-side) Lock Bar, do these steps in motdiag:
1. Press: M (set motion) until you get
Det1 Lock Bar (ring side) or
Det2 Lock Bar (ring side) (depending on which Detector you have at the bottom).
2. Press: D (set motor direction) until Unlock appears.
3. While holding the rear Latch Pin down, press the S (start motion) key until the
Det_RingSideBarUnlock field changes from a 0 to a 1, then press the Spacebar to
stop the motor.
G. Carefully load the first collimator by these steps:
1. Orient the Collimator so the Collimator ID board will be on the front left corner of
the lower detector when you place the Collimator on the Detector.
Collimator ID board
on lower head
(upper head not shown)
2. Use a sling (if available) and the Patient Table, or manually with the help of
another person, load the Collimator on the bottom Detector.
A-5
Appendix A
Detector Eccentrics
H. Latch the Collimator to the Detector by these steps in motdiag:
1. To lock the rear (ring-side) Lock Bar, do these steps:
a) Press: M (set motion) until you get
Det1 Lock Bar (ring side) or
Det2 Lock Bar (ring side)
(depending on which Detector you have at the bottom).
b) Press: D (set motor direction) until Lock appears.
c) Press the S (start motion) key until the Det_RingsideBarLock field changes
from a 0 to a 1, then press the Spacebar to stop the motor.
2. To lock the front (outside) Lock Bar, do these steps:
a) Press: M (set motion) until you get
Det1 Lock Bar (outside) or
Det2 Lock Bar (outside)
(depending on which Detector you have at the bottom).
b) Press: D (set motor direction) until Lock appears.
c) Press the S (start motion) key until the Det_OutsideBarLock field changes
from a 0 to a 1, then press the Spacebar to stop the motor.
WARNING! Failure to lock a Collimator onto a Detector with both the front and
rear Lock Plates may cause the Collimator to fall causing significant damage or
injury!!
A-6
Appendix A
Detector Eccentrics
III. Adjust the Front and Rear Detector Eccentrics to Match the First Collimator:
A. With the outside and ring-side Lock Bars locked, try turning the front and rear
Collimator Eccentrics by hand. The Collimator Eccentrics should just barely turn (i.e.,
turn with difficulty).
Collimator Eccentric
should just barely turn
B. If the outside and ring-side Collimator Eccentrics just barely turn, the Detector
Eccentrics are set correctly. Loctite the Detector Eccentrics without changing their
position and torque them to 27 in-lbs, or 150 cm-kg.
If there is an outside or ring-side Collimator Eccentric that turns too easily, or does not
turn at all, you must adjust the corresponding Detector Eccentric. Use the Eccentric
Tool to adjust the Detector Eccentrics until the Collimator Eccentric just barely turns,
then Loctite the Detector Eccentric and torque it to 27 in-lbs, or 150 cm-kg.
Note: If you change a Detector Eccentric, you must check (and will probably have to
readjust) any Collimator Eccentrics (if any) that you previously set with that Detector
Eccentric.
A-7
Appendix A
Detector Eccentrics
IV. Loading First Collimator on the Other Detector
A. Rotate the Gantry 180°.
B. Repeat the above steps to load the most frequently used Collimator on the other
Detector.
V. Loading and Adjusting Other Collimators
A. After you have completed the installation of the Exchanger and have it adjusted so it
pivots and you can exchange collimators, load the rest of the Collimators as described
below.
B. As you load each of the other Collimators on their Detectors, adjust their Collimator
Eccentrics so each Collimator Eccentric will just barely turn.
Note: Do not change a Detector Eccentric unless absolutely necessary. If you change a
Detector Eccentric, you must check (and will probably have to readjust) all Collimator
Eccentrics that you previously set with that Detector Eccentric.
A-8
Appendix B
Collimator Support Shim Adjustments
Appendix B
Collimator Support Shim Adjustments
If you cannot position the Exchanger to capture all eight Eccentrics (Section 2 or 3) for the
Collimators in shelves 1 and 8, set the Exchanger to capture the four Eccentrics on the lower
Collimator; then change the shims for the upper Collimator Support Brackets as this
Appendix describes.
The procedure described in this Appendix applies to Exchangers manufactured after
December 2000. You can do similar shimming using washers on older Exchangers.
I. Changing Upper Drawer, U- and V- notch, Collimator Support Bracket Shims
A. Manually extend the highest Exchanger Drawer (#8) as described in Section 2 or 3.
B. Determine to which direction you need to shift the Collimator Support Brackets (toward
or away from the Gantry).
C. Remove the V-notch (front) Collimator Support Brackets and note the shims between
the brackets and the drawer. The shims on one side will probably be 1 mm thick, and 2
mm thick on the other side.
U-notch (rear)
Collimator
Support Bracket
(1 of 2)
2m
(de m S
fau him
lt)
1m
(de m S
fau him
lt)
V-notch (front)
Collimator
Support Bracket
(1 of 2)
Upper Drawer Assembly
D. Change shims between the two brackets to achieve the shift you need.
E. Repeat the above steps for the U-notch (rear) Collimator Support Brackets.
B-1
.