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FLO-SAFE
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Manifold & Alarm System
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Installation and Operation Manual
MX105300
Matrx by Midmark
145 Mid County Drive
Orchard Park, New York 14127
800 MIDMARK 1-800-Midmark
[643-6275] (Customer Service)
888 279 1260www.midmark.com
(Technical Service)
www.midmark.com
Part No. 10376600 Rev. E
Style F
CONTENTS
TABLE OF CONTENTS
Doctor’s Operating Summary .................................... ii-iii
Section 2
2.1
2.2
2.3
2.4
2.5
2.6
Pre-Installation ...................................... 3-5
Kit Content
Installation of Manifold Mounting Plate
Installation of Zone Valve
Piping System Installation
Supply Circuit Connection
Low Voltage Signal Cable
Section 3
3.1
3.2
3.3
3.4
3.5
System Installation ................................ 6-7
Wall Mounted Alarm
Desk Mounted Alarm
Control Module
Manifold
Cylinders and Regulators
Section 4
4.1
4.2
4.3
4.4
4.5
4.6
Zone Valve Installation and Testing .. 8-10
Zone Valve Pre-Installation
Manifold Switch Wiring
Zone Valve Switch Wiring
“Chained” Zone Valve
Pressure Switch Testing
Final Inspection
Section 6
6.1
6.2
6.3
6.4
System Functional Testing ............... 15-17
Test Setup
Cross Connection Test
Testing the Manifold Alarm
Replacing the Test Regulators
Section 7
7.1
7.2
7.3
Maintenance ....................................... 18-20
Fuse Replacement
Adjusting Cylinder Regulators
Gas Cylinder Replacement
Section 8
8.1
8.2
8.3
8.4
Calibration and Troubleshooting ..... 21-23
FLO-SAFE Manifold Calibration
Problems and Solutions
Global Reset
Troubleshooting Tips
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About FLO-SAFE ...................................... 2
Description
Models and Features
System Components
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Section 1
1.1
1.2
1.3
FLO-SAFE Operation and Checkout 11-14
Activating the System
Deactivating the System
Changing Security Code
Alarm Features
Manifold Features
Control Module Features
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Safety Warning and Important Information .................. 1
Section 5
5.1
5.2
5.3
5.4
5.5
5.6
Replacement Parts ................................. 24
Section 10
Service and Warranty ............................. 24
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Section 9
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SUMMARY
DOCTOR’S OPERATING SUMMARY
Daily Startup
Startup
1.
Open all four gas cylinder valves completely.
2.
At the Alarm Panel, press the ON/OFF indicator.
3.
The system is now operational unless your system
is a FS-1 or CFS-1 with the optional security
system. For these systems, the Alarm Panel
SECURITY indicator should light. Enter your code.
If indicator fails to light, call for service.
4.
Press ON/OFF again. Your system is now
operational.
STEP 2 PRESS ALARM PANEL ON/OFF
INDICATOR
STEP 4 FOR SYSTEMS WITH SECURITY,
PRESS ON/OFF AGAIN
STEP 3 FOR SYSTEMS WITH SECURITY,
ENTER YOUR CODE
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ALARM PANEL
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N2O
Daily Shutdown
At the Alarm Panel, press the ON/OFF indicator.
2.
Close all four gas cylinders valves completely. The
system is now shut down.
3.
Do not remove alarm or disconnect components
to shut down FLO-SAFE.
2.
N2O
STEP 1 OPEN ALL FOUR GAS CYLINDER
VALVES COMPLETELY
MX105400
Shutdown
STEP 1 PRESS ALARM PANEL
ON/OFF INDICATOR
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ALARM PANEL
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Operating Tips
1.
O2
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1.
O2
Do not use the supply circuit breaker to control
operation of FLO-SAFE. Current draw is negligible
and a global reset (Section 8.3) must be performed
each time power is turned off (or interrupted).
O2
It is a good practice to note the pressure readings
of both gauges at the Manifold after shutdown and
just before startup. If there is more than 5 psi
change in pressure, your system is leaking
excessively. Call your Matrx by Midmark dealer for
Service.
N2O
O2
N 2O
STEP 2 CLOSE ALL FOUR GAS CYLINDER
VALVES COMPLETELY
MX105500
3.
If you have forgotten or want to change your
security code, see Section 5.3 and 5.6 of this
manual.
4.
FLO-SAFE provides: status information; audible
and visual alarms when gas pressure is high or
low; warnings when there is no reserve, and a
manual override to allow gas delivery during power
outages. These functions are illustrated from a
user’s prospective on the next page.
ii
DOCTOR’S OPERATING SUMMARY
Electrical power failure. To
continue operation, set the
Manifold selector knob so that
the pointer of the knob aligns
withe the triangular blue mark at
12 o’clock on the Manifold cover.
Gas will now flow to the operatories. When power returns, press
the ON/OFF indicator on the
Alarm Panel to resume automatic operation.
ON/OFF INDICATOR
FOR MANUAL
OVERRIDE, SET
SELECTOR KNOB
TO 12 O’CLOCK
MX105600
NITROUS OXIDE
HIGH/LOW INDICATOR
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Alarm beeps continuously indicates high or low gas
pressure. When nitrous oxide or oxygen pressure at the
Manifold exceeds 65 psi or drops below 40 psi, the Alarm
Panel responds with an audible, repeating “beep” and
lights the appropriate HIGH or LOW indicator. Correcting
the problem causes the indicator to return to normal and
shuts off the beeper. To silence the beeper during
servicing, press the icon shown.
SYSTEM STATUS
INDICATOR
MX105700
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OXYGEN HIGH/LOW
INDICATOR
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TO SILENCE ALARM
BEEPER, PRESS HERE
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FLO-SAFE is not operating normally and the tank
gauges show adequate gas supplies (at least 200
psi). Check the SYSTEM STATUS indicator. When an
abnormal situation arises, the SYSTEM STATUS
indicator and one or more of the letters A, B, or C will
light. See Section 8, Troubleshooting, for a description
of each of the status condition codes e.g., A, AB, BC.
If calling for service, give your Matrx dealer (listed on
cover), the status code indicated.
N2O NO RESERVE INDICATOR
MX105800
When a NO RESERVE icon lights, a good practice is to
replace empty tank without delay to avoid an automatic
shutdown because of low gas pressure.
O2 NO RESERVE INDICATOR
MX105800
iii
SAFETY WARNINGS AND IMPORTANT INFORMATION
WARNING: READ AND UNDERSTAND THE FOLLOWING SAFETY INSTRUCTIONS
BEFORE ATTEMPTING TO INSTALL OR OPERATE THE FLO-SAFE MANIFOLD AND
ALARM SYSTEM. IF YOU DO NOT UNDERSTAND THESE INSTRUCTIONS, CONTACT
YOUR LOCAL MATRX BY MIDMARK DEALER.
INSTALLATION AND TESTING SAFETY
Installation and testing shall be done in accordance with NFPA or CSA standards. It is the responsibility of
the installer to ensure compliancy with the above standards as well as any local building or fire code.
4.
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INSPECT THE GAS CYLINDER VALVE FOR
LEAKS BEFORE PUTTING IT INTO SERVICE. If
a leak is found around the cylinder valve stem,
close the valve, place the cylinder outdoors in a
safe area, and inform your medical gas supplier
immediately.
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DO NOT ALLOW OXYGEN OR NITROUS
OXIDE EQUIPMENT TO BECOME EXPOSED
TO FIRE, SPARKS, OR OTHER POSSIBLE
SOURCES OF IGNITION.
DO NOT USE THE REGULATOR IF OIL OR
GREASE IS PRESENT, OR IF DAMAGE IS
EVIDENT.
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3.
7.
DO NOT SUBMERGE THE REGULATOR IN
WATER. Wipe Dusty parts with a damp cloth.
To disinfect the regulator, use isopropyl alcohol.
5.
NEVER ALTER THE REGULATOR IN ANY WAY.
6.
IF YOU HEAR A LOUD “HISSING” OR
“POPPING” SOUND COMING FROM THE
REGULATOR, CLOSE THE CYLINDER VALVE
OR GAS INLET AND CONTACT YOUR MATRX
BY MIDMARK DEALER. This regulator is
equipped with a relief valve; these sounds
indicate a possible malfunction and hazardous
condition.
8.
DO NOT STORE CYLINDERS NEAR SOURCES
OF HEAT OR FLAME. Never allow the temperature
of the cylinder contents to exceed 125° F.
9.
NO SMOKING. Remove matches, cigarettes,
lighters, and lighter fluids from the area.
10. SECURE TANKS with tank restraints.
11. KEEP ALL SUPPLY TANKS IN A LOCKED,
SECURED AREA.
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2.
DO NOT USE OIL, GREASE, OR ANY OTHER
PETROLEUM-BASED OR FLAMMABLE
SUBSTANCE ON OR AROUND OXYGEN
EQUIPMENT. Oil and grease become highly
combustible in the presence of oxygen. Oxygen
is not flammable by itself; however, all materials
which burin in air will burn much more rapidly in
the presence of oxygen.
12. NEVER LEAVE GAS CYLINDER VALVES OPEN
OVERNIGHT. Turn all cylinder valves clockwise at
the end of each day to shut off the gas supply.
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1.
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REGULATORY AND GAS CYLINDER SAFETY
13. WHEN OPENING A CYLINDER VALVE, ALWAYS
STAND SO THE CYLINDER VALVE IS BETWEEN
YOU AND THE REGULATOR. (Stand opposite the
supply line from the regulator to the Manifold).
NEVER STAND IN FRONT OF OR BEHIND A
REGULATOR when opening a cylinder valve.
1
ABOUT FLO-SAFE
SECTION 1.0
1.1 DESCRIPTION
The Matrx FLO-SAFE Manifold and Alarm System
provides safe delivery of nitrous oxide (N20) and Oxygen
(O2) from source tanks to the lines supplying patient
areas. The FLO-SAFE Manifold is designed for systems
using less than 3000 cubic feet (85 cu. m.) of gas.
2. The Control Module houses the control electronics
and power supply. It directs all major functions of
the system, including tank switchover, pressure
alarms and system status.
3. The Alarm Panel provides control and system status
monitoring, with audio and visual alarms to warn of
high and low gas pressures. Model FS-1 has a
security function that prevents unauthorized
operation of the system. The Alarm Panel can be
wall-mounted or optionally desk-mounted
(requires kit PN 91307605).
1.2 MODELS AND FEATURES
The FLO-SAFE Manifold System is available in two
models:
1. FS-1 and CFS-1with security
2. FS-2 and CFS-2 without security
4. The Zone Valve provids emergency shutoff of
gases in the patient area. Surface and flushmounted versions are available. Both are supplied
with high/low pressure switch assemblies and a
single-handle shutoff.
1.3 SYSTEM COMPONENTS (Figure 1)
The system consists of the FLO-SAFE Manifold, Alarm
Panel, Control Module, Service Isolation Valve, Zone
Valve Shutoff box and four Cylinder Regulators.
5. The Service Isolation Valve provides a means to
disconnect the supply gas from the distribution
system. A single actuator controls both O2 and N2O
valves. Includes a security device to allow locking
the valve open and closed.
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All models provide automatic switchover to the reserve
tank, audio/visual alarms, and a Proportional Fail-Safe
feature that stops nitrous oxide flow in the event oxygen
pressure drops so that nitrous oxide cannot be
administered without oxygen.
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1. The wall-mounted Manifold connects to the gas
supply (nitrous oxide and oxygen). It contains
pressure sensors, pressure relief devices, pressure
gauges, a Proportional Fail-Safe system, an
automatic switchover mechanism and Control
Module.
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NOTE: Zone Valve Shutoff Boxes are required
in some installations. Refer to NFPA and CSA
guidelines.
FLO
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ZONE VALVE
(OPTIONAL)
WALL PLATE
TO INDIVIDUAL
PATIENT ROOMS
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PATIENT AREA
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WALL-MOUNTED
ALARM PANEL
W
OPTIONAL
DESK-MOUNTED
ALARM PANEL
CONTROL
MODULE
MANIFOLD
6’ CABLE
SUPPLIED
O2 REGULATOR
SECURE
AREA
CYLINDER
VALVE KNOB
O2
O2
WALL PLATE
N2O REGULATOR
N2O
N2O
MX106000
FIGURE 1. FLO-SAFE Manifold System with Optional Zone Valve
2
PRE-INSTALLATION
SECTION 2.0
2.1 KIT CONTAINS
The Canadian FLO-SAFE (CFS) Manifold System
Installation Kit is available in two different configurations
based on the zone valve mounting arrangement, being
recessed or surface mount. Installation kit with recessed
zone valve, p/n 91307612 consists of the following:
Part No.
Qty.
NOTE: UP label indicates proper orientation
40116000
30111600
91305653
61943300
61943455
62923803
61896300
1
1
1
1
2
1
1
2.2.1 Drywall Mounting
1. Use the mounting plate as a template. Mark
locations of the four spacers on back of the four
spacers on back plate and the four corner holes.
2. Drill 1" diameter clearance holes through drywall
at each spacer location so mounting plate fits flush
to wall.
Installation Kit, with surface mount zone valve, p/n
91307613 consists of the following:
3.
Part No.
Qty.
2.2.2 Wall Stud Mounting
1. Use mounting plate as template. Mark the upper
and lower rear spacer holes.
1
1
1
1
2
1
1
2. Attach mounting plate to stud using wood screws.
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40116000
30111600
91305652
61943300
61943455
62923803
61896300
Drill ¼” holes at corner holes. Insert hollow wall
anchors in corner holes. Attach plate using anchors.
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Description
Manifold Installation Kit (includes
mounting plate, 100’ of signal and
hardware package)
Service Isolation Valve
Zone Valve Shut-off Box (Surface)
Switch Box
Switch Box Support
Bushing
2-20 Cable
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Description
Manifold Installation Kit (includes
mounting plate, 100’ of signal and
hardware package)
Service Isolation Valve
Zone Valve Shut-off Box (Recessed)
Switch Box
Switch Box Support
Bushing
2-20 Cable
2.2 INSTALLATION OF MANIFOLD MOUNTING
PLATE
See Figure 3 to select a location for the manifold
mounting plate. The location selected must be within 36
inches of the proposed location for the gas cylinders
because 36 inch lines are provided to connect the FLOSAFE Manifold to the cylinders. Mount the bottom edge
of mounting plate 5 feet above the floor.
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2.2.3 Crossmember Mounting
1. Use mounting plate as a template. Mark the left,
right and lower rear spacer holes.
2. Attach mounting plate using wood screws.
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IEC
CORD
GAP
C
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D
DO NOT USE
KNOCKOUTS
ON SIDE OF
ELECTRICAL BOX
2.3 INSTALLATION OF THE ZONE VALVE
(Refer to Section 4 elsewhere in this manual)
E
SIGNAL
CABLE
ACCESS
Mounting Plate Options:
For drywall or surface mounting,
A use four corner holes.
FOR WIRING ACCESS
LEAVE THIS AREA OPEN
For pre-drywall crossmember
B mounting, use three holes shown.
For pre-drywall stud mounting, use
C two holes shown.
Main Power Installation Options:
8” MAXIMUM
Electrical box may be accessed from:
D Top knockout
or
E Knockout on backside of plate
A
B
LOCATE BOTTOM
EDGE 5’ FROM FLOOR
MX104800i
FIGURE 2. Installation Options for Manifold Mounting Plate and Main Power Installation
3
PRE-INSTALLATION
TO OUTLET
STATION
WRAP WET RAGS
AROUND PIPING AT EACH
END WHEN BRAZING
OW
FL
N2O
2-20 CABLE
(6’ PROVIDED)
O2
TRIPLE GANG
ELECTRICAL BOX FOR
ALTERNATE PREDRYWALL INSTALLATION
(NOT PROVIDED)
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2 5/16”
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12 1/8”
R.O.
SIG
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NA
TW
(10 L CA
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0’
Z
PR BLE
C A ON
OV - 4
BL E V
ID CO
E - AL
ED N
VE
DU
4
)
(
CT
10 CON SH
U
0’
OR
PR DUC TOF
OV TO F
IDE R SIG
D) EAC NA
H L
1 3/8”
RECESSED
ZONE VALVE
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CONNECT WITH WIRE
CONNECTORS (SUPPLIED
WITH ALARM PANEL)
AR
1/2”
DRYWALL
2” X 4”
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ZONE VALVE
SHUTOFF BOX
IN PATIENT AREA
ISOLATION
VALVE
AL
SURFACE MOUNTED
ZONE VALVE
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1
DE 15 V
DIC AC
AT MA
ED IN
CIR PO
CU WE
IT R W
BR
EA ITH
KE
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MANIFOLD MOUNTING PLATE:
• LOCATE BOTTOM EDGE 5’ FROM FLOOR
• WITHIN 36” OF SUPPLY GAS REGULATOR
MX104900i
Figure 3 Installation Options for Manifold Mounting Plate and Main Power Installation
4
PRE-INSTALLATION
2.4 PIPING SYSTEM INSTALLATION
Install piping system in accordance with local building
and fire codes. Depending on locality, adherence to
NFPA 99C or CSA 27396.1 is strongly recommended.
3. Connect supply hot line to black or brown wire using
wire connector provided.
4. Connect Supply neutral line to white or blue wire
using wire connector or provided.
2.5 SUPPLY CIRCUIT CONNECTION
All electrical connections must be made to local codes
by a licensed electrician. A dedicated 15A, 115VAC, 14
All electrical connections must be made to local codes
by a licensed electrician. A dedicated 15A, 115VAC, 14
gauge supply circuit is required. This must be a
dedicated circuit due to the emergency system
requirements, rather than the amperage demands, of
the FLO-SAFE System. To install the supply line:
5. Connect supply ground to ground post inside
electrical box. Attach ground of Manifold power cord
to same post using #6-32 nut provided.
6. Attach cover to box.
7. To facilitate future servicing, label dedicated
Manifold System supply circuit at service panel.
1. Feed dedicated branch circuit line to Manifold
Mounting Plate electrical box.
For surface-mounted power line,
use knockout on top of box.
·
For in-wall power line, use rear
center knockout.
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·
2.6 LOW VOLTAGE SIGNAL CABLE
Provided is 300’ of 4 conductor signal cable. Two equal
lengths run between the Manifold Mounting Plate and
Zone Valve Shutoff Box. A third length between the
Manifold mounting Plate and the Alarm panel (see figure
2). Also provided is a 6’ length of 2 conductor cable
which connects the alarm panel to the 90 dB remote
auditory alarm. Connection details found in the FLOSAFE Manifold & Alarm System Installation & Operation
Manual #10376600.
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Note: Do not use side knockouts on
electrical box.
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2. Attach bushing of supplied Romex connector to
incoming cable. Insert connector through chosen
knockout and secure with connector locknut.
5
SYSTEM INSTALLATION
SECTION 3.0
3.3 CONTROL MODULE (Figure 6)
Now, install the Control Module on the Manifold
mounting plate and connect the Alarm wiring per the
following procedure while referring to Figure 6.
Follow these instructions to complete system installation
only after the building trades have completed the
Pre-Installation procedures in Section 2.
3.1 WALL-MOUNTED ALARM (Figure 4)
1. Attach one end of 4" cord to connector on back of
Alarm Panel, then attach other end to connector on
Alarm Panel wall plate.
1. Place Control Module tabs over four studs on
Manifold mounting plate. Fasten with 6-32 nuts and
lock washers. Do not pinch power cord when
tightening.
2. Insert tabs on back of Alarm Panel into slots on
Alarm Panel wall plate, then slide Alarm Panel down
into place.
2. At Control Module, remove 3" to 5" of gray outer
jacket from four-conductor alarm signal cable, then
strip ¼” insulation from the end of each wire.
3. Connect wires to terminal block, matching wire
colors to terminal block label, then tighten screws.
4” CORD
4. Insert Alarm terminal-block jack into Control Module
port (connector) marked ALARM.
SLOT
3.4 MANIFOLD (Figure 6)
Now, install the Manifold in the Manifold mounting plate
and connect the wiring as detailed below.
1. Remove and discard retaining clips and cap plugs
from both gas line pigtail fittings on Manifold
mounting plate.
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WALL-MOUNTED
ALARM PANEL
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TAB
WALLPLATE
MX106100
FIGURE 4. Wall-Mounted Alarm Panel Installation
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2. Place Manifold over 2 studs on Manifold mounting
plate and fasten 2" screws.
3.2 DESK-MOUNTED ALARM (Figure 5)
Installation of the optional Desk-Mounted Alarm requires
kit PN 91307605
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3. Connect Manifold DISS fittings to pigtails.
4. Insert jack of pre-wired 12-conductor cable from
Manifold into Control Module port (connector)
marked SWITCHES.
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1. Remove backing from double-sided tape on support
wedges.
5. Insert jack of pre-wired six-conductor cable from
motor on Manifold into Control Module port marked
MOTOR.
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2. Slide metal tabs on back of Alarm Panel into slots in
support wedges. Place assembled Alarm Panel on
selected desk, making sure bottom edges of support
wedges rest on desk when Alarm Panel is upright.
6. Turn Manifold selector knob to 6 o’clock position.
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3. Attach one end of 6’ cord (supplied with kit) to
connector on back of Alarm Panel, then attach other
end to connector on Alarm Panel wall plate.
7. Place cover on Manifold, gently spreading sides of
cover so as to clear locking tabs on sides of
Manifold mounting plate.
3.5 CYLINDERS AND REGULATORS
6’ CORD
WARNING: Read and understand the page 1
safety instructions before attempting to
operate regulators. If you do not understand
these instructions, contact your Matrx by
Midmark dealer.
TAB
OPTIONAL
DESK-MOUNTED
ALARM PANEL
TO WALL PLATE INSTALLED 12”
MINIMUM ABOVE FLOORING
1. Mount tank restraints 40" from floor.
2. Secure tanks in tank restraints. Each cylinder
MUST be individually restrained.
SLOT
3. Open and close each cylinder valve to purge foreign
materials. Contact your medical gas dealer for more
information.
SUPPORT
WEDGES
MX106200
FIGURE 5. Desk-Mounted Alarm Panel Installation
6
SYSTEM INSTALLATION
7. Install any optional Zone Valves required for the
system as discussed in Section 4. Perform the
installation checkout and operational feature
familiarization of Section 5.
4. Mount a test regulator on one oxygen cylinder.
5. Mount a test regulator on one nitrous oxide cylinder.
NOTE: Do not mount the preset regulators
supplied at this time.
8. Finally, functionally test system per Section 6
procedure. This test must be witnessed.
6. Connect DISS oxygen and nitrous oxide flexible
hoses from test regulator outlets to Manifold inlets.
MANIFOLD
MOUNTING
PLATE
WARNING: After installation, the customer and
Matrx by Midmark dealer shall witness testing
of system for proper gas connections.
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CONTROL
MODULE
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LOCKING
TAB
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MANIFOLD
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12-CONDUCTOR
PRESSURE SWITCHES
JACK FROM MANIFOLD
TO CONTROL MODULE
“SWITCHED” PORT
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MANIFOLD
COVER
4-CONDUCTOR ALARM JACK
FROM ALARM PANEL TO CONTROL
MODULE PORT LABELED “ALARM”
(Installer Assembled)
1/4
IEC 320 POWER CORD
6-CONDUCTOR MOTOR JACK
FROM MANIFOLD TO CONTROL
MODULE PORT LABELED “MOTOR”
3’
TO
”
5”
MX106200
FIGURE 6. Control Module and Manifold Installation
7
ZONE VALVE INSTALLATION AND TESTING
SECTION 4.0
3. Attach wires for Zone Valve to this terminal block,
jack, matching wire colors to colors on label
(see Figure 7). Tighten screws securely.
4.1 ZONE VALVE PRE-INSTALLATION (Figure 3)
The Zone Valve Shutoff Box Kit includes the following
components:
• Shutoff Box assembly (with separately
packaged O2 and N2O pressure
assemblies) .................................... 1
• Bezel ............................................... 1
• Clear access panel .......................... 1
• Central supply label ......................... 1
• Manual ............................................ 1
• Truss head screws #6 x ¼ .............. 4
• 100’ four-conductor alarm cable ...... 2
NOTE: If a Zone Valve Shutoff Box is not
installed, do not remove the shorting jumper
from terminal block.
4.3 ZONE VALVE SWITCH WIRING (Figure 8)
NOTE: The Zone Valve Shutoff box has three
wire routing holes. Three strain relief fittings
are provided with each Zone Valve in a 3" x 5"
plastic bag. Insert strain relief fittings into
holes before inserting cables.
NOTE: Do not install pressure switch
assemblies or open packages at this time.
Place packaged assemblies in Shutoff Box.
1. At the Zone Valve, remove 8-10" of gray outer
jacket from both four-conductor cables and strip
insulation back 1/4" on each wire.
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1. Feed two four-conductor signal cables from Zone
Valve Shutoff Box to Manifold mounting plate.
2. Remove foam packing from the pressure switch
assemblies.
2. Feed both cables through plastic bushing at upper
right corner of Manifold mounting plate. Mark
both ends of each cable for proper identification.
3. Attach wires to terminal strips on pressure
switch assemblies, matching colors to wires on
each pressure switch (see figure 9). Tighten
terminal screws to fasten wires securely.
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3. Replace cardboard plaster shield in Zone Valve
Shutoff Box.
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TWO 4-CONDUCTOR CABLES
4. Insert oxygen pressure switch into lower section
of Zone Valve Shutoff Box.
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5. Insert nitrous oxide pressure switch into upper
section of the Zone Valve Shutoff Box.
SHORTING
JUMPER
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4.4 “CHAINED” ZONE VALVES (Figure 9)
1. For multiple Zone Valves, install wiring to first
Zone Valve as described in Section 4.2.
ZONE VALVE
TERMINAL BLOCK
JACK
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2. Run two additional four-conductor cables between
the two zone valves.
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3. Remove jumpers from the second terminal strip on
both the oxygen and nitrous oxide pressure switch
assemblies.
ZONE VALVE CONNECTOR FROM BACK
SHOWING WIRING COLOR CODE
4. Using the second pair of four-conductor cables,
attach wires to these terminal strips following the
same color code.
MX105200
5. At the next Zone Valve Shutoff Box, attach fourconductor cable wires to first terminal strips on the
oxygen and nitrous oxide pressure switch
assemblies.
FIGURE 7. Zone Valve Terminal Block at Manifold
4.2 MANIFOLD SWITCH WIRING (Figure 7)
6. If installing additional Zone Valves, repeat Steps 2-5.
1. At the Manifold, remove shorting jumper assembly
from the terminal block labeled “Zone Valve.”
NOTE: If “Chained” Zone Valves are not installed,
do not remove jumpers from second terminal
strip on pressure switch assemblies.
2. Remove 3" to 5" of gray outer jacket from both
four-conductor cables. Strip insulation back ¼”
on each wire.
8
ZONE VALVE INSTALLATION AND TESTING
4.5 PRESSURE SWITCH TESTING
1. Test Set-Up. With the Zone Valve open and the
Manifold System turned on at the Alarm Panel (see
Section 5.4), slowly open all four cylinders, pressurizing
the system to the normal operating pressure. After
about 10 seconds, pull the Zone Valve handle to close
its two valves, isolating the Zone Valve pressure
switches from the Manifold pressure switches.
to 65 psi. Slowly increase pressure until the HIGH
pressure visual (4, Figure 11) and audio alarms,
activate. The Zone Valve gauge pressure should be
approximately 65 psi. Silence the audio alarm (see
section 6.4). Repeat for both gases. Slowly relieve
pressure in both lines.
4.6 FINAL INSTALLATION
1. Remove and discard the protective cover only
after the completion of wall plastering, painting,
tiling, and trim work. Be careful removing the
protective cover so that the plaster does not chip
away from the edge of the box.
2. Low Pressure Alarm Test. To an outlet station,
connect a stem-indexed hose with a shutoff valve.
Slowly bleed down the pressure at the outlet station
until the LOW pressure visual (4, Figure 11) and
audio alarms activate. The Zone Valve gauge
pressure should be approximately 40 psi. Silence the
audio alarm (see section 5.4). Repeat for both gases.
2. Check that all wires are terminated, both pressure
switch assemblies are installed, and valves are open.
NOTE: To perform the high pressure test, the
Zone Valve must be pressurized from the outlet
station side of the Zone Valve Box. To prevent
false alarms, make sure the Manifold side of
the Zone Valve remains pressurized at the
normal operating pressure. The Zone Valve
handle must remain closed.
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3. Remove the self-adhesive label from the plastic
bag in the box. Mark the area controlled on label.
4. Attach label to bezel (see figure 8).
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5. Secure bezel to metal enclosure with screws
provided.
3. High Pressure Alarm Test. To a controlled outlet
station, connect a stem-indexed hose with a test
regulator and cylinder capable of pressurizing the line
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NITROUS OXIDE SWITCH (BLUE)
HIGH (N.C.)
TO
OPERATORIES
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LOW (N.O.)
6. After pressure switch testing, remove packing from
cover and place cover in opening of bezel.
OW
FL
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ZONE VALVE
SHUTOFF BOX
GREEN
R
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N2
O2
BEZEL
TO BLUE
SWITCH
WHITE
N2 O
O2
BLACK
TO GREEN
SWITCH
RED
TWO 4-CONDUCTOR
CABLES TO
CONTROL MODULE
LOW (N.O.)
HIGH (N.C.)
ATTACH
LABEL
TO
MANIFOLD
OXYGEN SWITCH (GREEN)
COVER
MX107400
FIGURE 8. Zone Valve Final Installation and Wiring
9
ZONE VALVE INSTALLATION AND TESTING
TO MANIFOLD
ZONE VALVE 1
WHITE
GREEN
REMOVE
JUMPERS
BLUE NITROUS OXIDE
PRESSURE SWITCH
HIGH (N.C.)
TO MANIFOLD
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ZONE VALVE 1
RED
BLACK
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WHITE
WHITE
GREEN
GREEN
LOW (N.O.)
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GREEN OXYGEN
PRESSURE SWITCH
RED
RED
RED
HIGH (N.C.)
RED
BLACK
BLACK
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REMOVE
JUMPERS
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WHITE
WHITE
GREEN
GREEN
LOW (N.O.)
ZONE VALVE 2
BLACK
HIGH (N.C.)
LOW (N.O.)
BLACK
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BLUE NITROUS OXIDE
PRESSURE SWITCH
GREEN OXYGEN
PRESSURE SWITCH
ZONE VALVE 2
LOW (N.O.)
HIGH (N.C.)
MX106400
FIGURE 11. “Chained” Zone Valve Installation
10
FLO-SAFE OPERATION AND CHECKOUT
SECTION 5.0
The FLO-SAFE Manifold with Security and without
Security are operated using controls on the Alarm Panel
and Control Module. The Alarm Panel and the Control
Module are touch panels. To operate, touch the graphics
or icon on the panel that depicts the desired function.
(For examples, see Figure 10) In the detailed operating
procedures that follow, the numbers in parentheses
following the names of indicators are “find” numbers that
are keyed to the referenced illustration.
5.1 ACTIVATING THE SYSTEM (Figure 11 to 13)
1. Turn on main power at the circuit breaker.
2. At the Manifold, turn the selector knob (Figure 14)
to 6 o’clock.
3. Open the cylinder valves.
4. Insert power cord into right side of Control Module.
The POWER ON indicator (Figure 12) should light.
STARTING FLO-SAFE (5.1)
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ALARM
WITHOUT SECURITY
STEP 5
PRESS ON/OFF
STEP 8
PRESS ON/OFF AGAIN
STEP 9
PRESS
ON/OFF
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ALARM
WITH SECURITY
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STEP 2
SET SELECTOR
KNOB TO 6 O’CLOCK
STEP 6
SECURITY
LIGHTS
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STEP 7
ENTER
SECURITY
CODE
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STEP 10
INDICATES
GASSES
ACTIVATED
STEP 11
TANK IN USE
INDICATOR
LIGHT
DEACTIVATING FLO-SAFE (5.2)
STEP 1
TOGGLE
ON/OFF TO OFF
STEP 2
GAS INDICATORS
GO OFF
STEP 3
MANUALLY CLOSE
GAS VALVE
FIGURE 12. Quick Operating Guide
11
MX106500
FLO-SAFE OPERATION AND CHECKOUT
Alarm with Security (Figure 13)
3. After the test sequence, the SECURITY (2) indicator
will illuminate.
5. At the Alarm Panel, press the ON/OFF (1) control.
4. Enter a new security code of up to four digits using
the Code Control (3) buttons.
Note: An audible “beep” occurs each
time on Alarm Panel button is pressed.
5. Press the ON/OFF (1) button again.
6. The SECURITY (2) indicator will illuminate to
indicate a security code must be entered.
6. The system will save the new code, then deactivate.
To reactivate the system using the new code, follow
Section 5.1.
7. Enter the security code using the Code Control (3)
buttons. (See section 5.3 to change the code, or
Section 5.6 if you have forgotten the code.)
NOTE: Allow 20 seconds for processing and
storing after entering a new code before
reactivating FLO-SAFE with the new code.
8. Press the ON/OFF (1) control again.
5.4 ALARM FEATURES (Figure 11)
1. ON/OFF: FLO-SAFE’s primary ON/OFF control.
Press this touch button to turn the system on or off.
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A) If the security code is correct, SECURITY (2)
indicator goes off, and both the NITROUS OXIDE
and OXYGEN pressure indicators (4) will illuminate,
indicating that the Manifold is supplying gas to the
patient area.
2. SECURITY: This icon illuminates to indicate that
the code must now be entered to complete
activation. To change the code, see Section 5.3.
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B) If the SECURITY indicator (2) remains
illuminated, the code was incorrect. Re-enter code.
9. When powering up the system for the first time, you
must do a global reset as detailed in Section 8.3
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3. CODE CONTROL BUTTONS 1, 2, 3: These
buttons are used to enter the selected security
code or factory default code (1) to complete
activation of the unit.
Alarm without Security (Figure 11)
4. HIGH/LOW PRESSURE INDICATORS: When
nitrous oxide or oxygen pressure at the Manifold
exceeds 65 psi or drops below 40 psi, Alarm
sounds an audible, repeating “beep” and illuminates
the appropriate HIGH or LOW indicator. Correcting
the problem causes the indicator to return to
NORM, automatically silencing the beeper.
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CAUTION: FLO-SAFE will not operate properly
unless a global reset is done when the unit is
first powered up and after correction of main
power problem such as a blown fuse.
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10. Press the ON/OFF (1) button. The NITROUS OXIDE
and OXYGEN pressure indicators (4) will illuminate.
11. At the manifold, the appropriate SELECTED (in
use) tank indicator arrows (3 & 7, Figure 13) will
illuminate to show which tanks have been selected.
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5. TEST/SILENCE ICON: During an alarm, press this
icon to silence the alarm beeper. If no alarm is in
progress, pressing this icon starts the test sequence,
which consists of a single response beep and the
illumination of each indicator in the following
sequence: LOW, NORM, HIGH, NO RESERVE,
SYSTEM STATUS, A, B, C, and SECURITY. The
Alarm Panel performs a self-test whenever activated.
Test each day before beginning use. If the test
sequence is not normal, call for service.
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5.2 DEACTIVATING THE SYSTEM
1. At the Alarm Panel, press the ON/OFF (1) button.
2. The NITROUS OXIDE and OXYGEN pressure
indicators (4) will go ofF (extinguish), indicating
that the Manifold is no longer supplying gas.
6. NO RESERVE: When either of there icons
illuminates, the reserve gas supply is exhausted.
The upper icon indicates reserve status of the nitrous
oxide supply; the lower icon is the oxygen reserve.
3. At the Manifold, close all the cylinder valves by
turning clockwise until completely closed.
5.3 CHANGING SECURITY CODE (Figure 11)
7. SYSTEM STATUS INDICATORS: If an
abnormal situation arises, the SYSTEM STATUS
indicator (7) and one or more of the letters A, B,
or C will illuminate. See Section 8, Troubleshooting,
for description.
1. Activate FLO-SAFE at the Alarm Panel by pressing
ON/OFF button (1). Press and hold Alarm Test/
Silence button (5).
2. Press and release the ON/OFF (1) button. Release
the Test/Silence control (5) button.
12
FLO-SAFE OPERATION AND CHECKOUT
(1) ON/OFF
CONTROL
(2) SECURITY
INDICATOR
(3) CODE
CONTROL
(4) PRESSURE
INDICATOR
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(6) NO RESERVE
INDICATOR
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(7) SYSTEM
STATUS
INDICATOR
(5) TEST
SILENCE
CONTROL
MX106600
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FIGURE 11. Alarm Panel Controls
5.5 MANIFOLD FEATURES (Figure 12)
CONTROL MODULE
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1. PROPORTIONAL FAIL-SAFE: A safety feature,
the Proportional Fail-Safe assures that nitrous oxide
line pressure never exceeds that of oxygen.
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2. PRESSURE GAUGES: Gauges for nitrous oxide
and oxygen indicate the pressure of the pipeline in
pounds per square inch (psi).
3. MANUAL OVERRIDE: Overrides automatic tank
selection function of the Manifold. In the event of a
power failure or other unusual condition, it permits
gas flow to the patient area. Manually turn the
selector knob to the 12 o’clock position and align
the pointer with the blue mark on the Manifold cover
to select all four tanks simultaneously. Use this
function only when necessary, as it can compromise
reserve tank(s) integrity.
NOTE: During periods of extremely high gas
usage, such as normal usage combined with
oxygen flushes, a Low Pressure alarm may
activate due to a brief system pressure drop.
The FLO-SAFE Manifold has a built-in ten
second delay to help avoid erroneous tank
switchovers during such conditions.
SELECTOR KNOB
N2O GAUGE
The selector switch used to operate manually (12
o’clock) or automatically (6 o’clock) is a six-position
switch. Figure 12 shows the tank open/closed
configuration in the other switch positions.
O2 GAUGE
MX106700
FIGURE 12. Manifold Controls and Indicators
13
FLO-SAFE OPERATION AND CHECKOUT
If low pressure exists when the system is activated,
a two-minute delay occurs before the EMPTY
indicator illuminates to allow the user to open the
cylinder valve and/or allow the system to fill with gas,
thus avoiding a false EMPTY reading.
5.6 CONTROL MODULE FEATURES (Figure 13)
8. SYSTEM STATUS Indicators: If an abnormal
situation arises, the SYSTEM STATUS indicator and
one or more of the letters A, B or C will illuminate.
See Section 8, Troubleshooting, for code
descriptions.
9. PRESSURE Indicators: These four indicators are
hard wired to the pressure switches and illuminate if
there is a break anywhere in the switch circuit. They
are visible only with the Manifold cover removed.
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3 & 7. TANK Indicators: There are two indicators for
each tank. SELECTED indicates which tank is in
use; EMPTY indicates which tank is considered
empty by the Manifold. The NO RESERVE indicator
on the Alarm will illuminate when the EMPTY
indicator is illuminated at the Manifold. A tank is
considered empty when the Manifold senses low
pressure for 10 seconds while that tank is selected.
5. MANUAL OVERRIDE Indicator: Illuminates at the
Manifold when the selector knob is aligned with the
blue mark at 12 o’clock on the Manifold cover. The
PRESSURE indicators and NO RESERVE indicators
will illuminate at the Alarm Panel, according to the
gas pressure. To resume automatic operation, press
both Service buttons on the Manifold Control Panel
or the ON/OFF button on the Alarm.
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2 & 6. SERVICE Buttons: Two buttons, labeled PRESS
AFTER REPLACING N2O TANK and PRESS
AFTER REPLACING O2 TANK, are the Service
buttons. To test all indicators for either gas, hold the
button down. All the indicators will illuminate
simultaneously. Releasing the button clears the
EMPTY indicators for that gas. To reset the Manifold
after using the Manual Override feature, press both
buttons simultaneously. The Service buttons (and the
Code Reset button (1)) are also used to globally
reset the FLO-SAFE computer. A global reset is
required at initial start-up, before calibration and
whenever electrical power is interrupted.
4. POWER ON Indicator: Lights when main power is
applied.
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1. Code Reset: If the security code is forgotten, the
unit can be reprogrammed to the factory code, which
is 1, by depressing the Code Reset button (1) on the
Manifold. Carefully insert a thin pen or tool into the
hole just above the words MANUAL OVERRIDE and
gently depress the button. Code Reset must also be
depressed simultaneously with both Service buttons
to perform a global reset.
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Power Supply with Fuse: The power supply and main
connector with a replaceable fuse are enclosed in
the Control Module. See Section 7.1 for fuse
replacement instructions.
(4) POWER ON
INDICATOR
(8) SYSTEM STATUS
INDICATOR
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(9) PRESSURE
SWITCH INDICATORS
(3) OXYGEN
TANK
INDICATOR
(7) NITROUS
OXIDE
TANK
INDICATOR
(1) CODE
RESET BUTTON
(6) NITROUS OXIDE
RESET BUTTON
(2) OXYGEN
SERVICE BUTTON
(5) MANUAL
OVERRIDE INDICATOR
MX106800
FIGURE 13. Control Module Controls and Indicators
14
SYSTEM FUNCTIONAL TESTING
SECTION 6.0
NOTE: The National Fire Protection Association
(NFPA) requires a 24 hour standing pressure
leak test at 55 psi with the intended use gases.
Refer to NFPA 99, 1996 Edition, Section
4-5.4.1.3 Check your local inspection
requirements before testing.
4. Slowly and carefully turn oxygen cylinder valve
counterclockwise until you hear oxygen begin to flow
into test regulator. Wait about 10 seconds, then open
cylinder valve fully. Repeat for nitrous oxide cylinder.
WARNING: When opening a cylinder valve,
never stand in front of or behind a regulator.
(Stand opposite the line from the regulator to
the Manifold). Always stand so the cylinder
valve is between you and the regulator.
Always open the cylinder valve slowly.
NOTE: Use test regulators for the following tests.
Do not use the preset regulators supplied.
NOTE: If installing a Zone Valve Shutoff
assembly, see Section 5.0 before performing
the tests in Section 4.0.
5. Adjust both test regulators to 55 psi.
WARNING: Always hold free end of hose.
“Hose whip” may cause serious injury.
6. Check for obvious leaks throughout the entire
piping system.
7. Turn selector knob to 6 o’clock position.
1. Remove Manifold cover.
2. Turn selector knob to 12 o’clock position.
8. Turn the Manifold Alarm ON at the Alarm Panel.
There should be no alarms at the normal
operating pressure.
3. Make sure Zone Valve is open (if installed).
9. The system is now ready for testing.
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6.1 TEST SETUP (Figure 14)
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STEP 8
TURN ALARM ON
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STEP 1
REMOVE
MANIFOLD COVER
R
PRESS TO
SILENCE
ALARM
MANIFOLD
STEP 2
SET SELECTOR
TO 12 O’CLOCK
STEP 7
SET SELECTOR
TO 6 O’CLOCK
STEP 4
OPEN
CYLINDER VALVE
STEP 4
OPEN
CYLINDER VALVE
O2
N2O
MX106900
FIGURE 14. Setup and Function Test
15
SYSTEM FUNCTIONAL TESTING
6.2 CROSS CONNECTION TEST
When system installation is complete (FLO-SAFE
Manifold and Alarm and all piping and outlet stations to
the operatories installed and leak tested), a cross
connection test shall be run and witnessed by the
customer and/or Matrx dealer. The procedure that
follows assures that gas lines have not been crossed
during installation. These tests must be conducted
before clinical used of the system.
11. Verify the following:
1. Exhaust gas from the entire Manifold system by
sequentially connecting an indexed hose to each
outlet station.
12. Test for crossed gas lines by connecting an
indexed gas hose to each outlet station in all
areas and verifying that:
·
All gas cylinders are individually restrained
to the wall.
·
Manifold nitrous oxide gauge reads
50 to 55 psi.
·
Manifold oxygen gauge reads 0 psi.
·
There is nitrous oxide flow at each N2O
outlet station.
3. Turn ON FLO-SAFE at the Alarm Panel. Silence
the alarm by depressing the alarm silence icon on
the Alarm Panel (see Figure 14).
·
There is no oxygen flow at each O2
outlet station.
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2. Test the oxygen circuit. Open all oxygen cylinder
valves; close all nitrous oxide cylinder valves.
13. This completes the crossed lines test. Exhaust all
gas from the entire Manifold system by sequentially
connecting an indexed hose to each outlet station.
4. Exhaust all nitrous oxide gas from the entire system
by sequentially connecting an indexed gas hose to
each nitrous oxide outlet station.
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6.2 TESTING THE MANIFOLD ALARMS
5. Verify the following:
All gas cylinders are individually restrained
to the wall.
·
Manifold oxygen gauge reads 50 to 55 psi.
·
Manifold nitrous oxide gauge reads 0 psi.
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There is no oxygen flow at each O2 outlet
station.
WARNING: During high pressure alarm testing
do not pressurize the system higher
than the high pressure switch point (65 psi).
Manifold pressure should never exceed 72 psi.
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1. Test the Oxygen High Alarm.
Using the oxygen cylinder test regulator, slowly
increase the oxygen pressure to the Manifold until
the oxygen high pressure visual and audio alarms
activate. The pressure reading on the Manifold
oxygen pressure gauge should be approximately
65 psi. Silence the audio alarm at the Alarm Panel
(see Figure 14).
There is no nitrous oxide flow at each
N2O outlet station.
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·
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6. Test for crossed gas lines by connecting an indexed
gas hose to each outlet station in all areas and
verifying that:
·
NOTE: Due to the proportional Fail-Safe
feature, the following order of alarm testing
must be followed:
1. Oxygen High Alarm
2. Nitrous Oxide High Alarm
3. Nitrous Oxide Low Alarm
4. Oxygen Low Alarm
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·
7. This completes the oxygen portion of the crossed
lines test. Exhaust all gas from the entire Manifold
system sequentially connecting an indexed hose to
each outlet station.
2. Test the Nitrous Oxide High Alarm
Keep the oxygen pressure at is high alarm set point
from the preceding step. Using the nitrous oxide
cylinder test regulator, slowly increase the nitrous
oxide pressure until the nitrous oxide high pressure
visual and audio alarms activate. The pressure
reading on the Manifold nitrous oxide pressure
gauge should be approximately 65 psi. Silence the
audio alarm at the Alarm Panel (see Figure 14).
8. Next, test the nitrous oxide circuit. Open all nitrous
oxide cylinder valves; close all oxygen cylinder
valves.
9. Turn ON FLO-SAFE at the Alarm Panel. Silence the
alarm by depressing the alarm silence icon on the
Alarm Panel (see Figure 14).
10. Exhaust all oxygen from the entire system by
sequentially connecting an indexed gas hose to
each oxygen outlet station.
16
SYSTEM FUNCTIONAL TESTING
3 . Test the Nitrous Oxide Low Alarm.
6.4 REPLACING THE TEST REGULATOR
Close the nitrous oxide cylinder valve. Slowly
decrease nitrous oxide pressure to the Manifold,
either by releasing gas from an outlet station or by
partially loosening the nitrous oxide DISS fitting at
the Manifold until you hear gas escaping. The
nitrous oxide low pressure audio and visual alarms
should activate at approximately 40 psi. Silence
the audio alarm at the Alarm Panel (see Figure 14).
Stop releasing gas from the system and reopen the
cylinder valve.
NOTE: If any test gas was used other than
the gas intended for the system, ensure that
the entire system is purged and repressurized
with the gases for which the system was
designed before use.
If a Zone Valve is installed, proceed to Section 4.
If a Zone Valve is not installed, replace the test
regulators as follows:
Note: Automatic tank switch-over will occur
if the Low Alarm persists for more than 10
seconds.
1. Turn off each test cylinder by turning the
cylinder valve clockwise completely.
2. Using a wrench, slowly unscrew the flexible
hose nut at each test regulator until you hear|
gas escaping. Allow pressure to bleed off
completely before continuing.
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4. Test the Oxygen Low Pressure Alarm.
Close the oxygen cylinder valve. Slowly decrease
oxygen pressure to the Manifold, either by releasing
gas from an outlet station or by partially loosening
the oxygen DISS fitting at the Manifold until you
hear gas escaping. The oxygen low pressure audio
and visual alarms should activate at approximately
40 psi. Silence the audio alarm at the Alarm Panel
(see Figure 14).
3. Unscrew the test regulators from the test
cylinders.
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4. Install the four preset regulators supplied.
5. Install all flexible hoses.
NOTE: The Proportional Fail-Safe feature will
cause the nitrous oxide pressure to decrease
along with the oxygen pressure, possibly
causing a nitrous oxide Low Pressure alarm.
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WARNING: Do not attempt to move a gas
cylinder unless the regulator has been
removed and the cylinder cap is in place.
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5. Manifold Alarm Testing Is Complete.
Turn the Manifold OFF at the Alarm Panel. At the
Manifold, retighten the DISS fittings if loosened.
Replace the Manifold cover.
17
MAINTENANCE
SECTION 7.0
The FLO-SAFE Manifold system requires no routine
maintenance beyond keeping the panels clean. Use only
mild soap and a damp cloth.
NOTE: Do not use strong detergents. These
may damage the Alarm Panel face or the
Zone Valve clear window.
7.1 FUSE REPLACEMENT (Figure 15)
7.2 ADJUSTING CYLINDER REGULATORS (Fig. 17)
FLO-SAFE Manifold Systems are supplied standard with
dual-stage O2 and single-stage N2O cylinder pressure
regulators. This mix of dual and single stage regulators
provides optimum pressure adjustment accuracy at
minimum cost. Matrx by Midmark cylinder regulators
are shipped factory adjusted and should not need
adjustment. However, if adjustment should be
necessary, follow the procedure below.
NOTE: Do not adjust regulators if oxygen
cylinder pressure is below 200 psi or if
nitrous oxide pressure is below 100 psi.
Replace the cylinder.
1. Press the ON/OFF button at the Alarm Panel to
ensure that the alarm is off.
2. Remove the cover from the Manifold by gently
spreading the sides outward.
1. Turn the system ON at the Alarm Panel.
3. Unplug the power cord from the control module
receptacle.
NOTE: FLO-SAFE is equipped with a dualstage oxygen cylinder regulator to maintain
constant line pressure during high usage
such as oxygen flush. The nitrous oxide
regulator is a single stage because nitrous
oxide is not a ‘flushed’ gas. However, an
optional dual-stage nitrous oxide regulator
is available (Matrx PN 93305356).
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4. Using a screwdriver, pry out the fuse holder
drawer located in the receptacle.
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5. Remove the active fuse from the fuse holder
drawer. If the internal wire is broken or melted,
discard the fuse.
2. With no gas flowing in the system, read the Manifold
and Cylinder Regulator gauges. Compare the
readings to Figure 17. If the readings correspond
with those in the figure, do not adjust the
regulator.
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6. Replace with the spare fuse stored in the fuse
holder drawer (5x20 mm, 500 milliamp Slo-Blo,
Matrx PN 63882532).
3. If adjustment is required, remove the acorn nut from
the cylinder regulator (See figure 16). Refer to the
tank SELECTED icons on the Manifold Control
Module (3 & 7, Figure 13) to make sure you are
adjusting the correct regulator. Remember,
adjustment is not needed if the regulator pointer is
anywhere within the green zone of the regulator.
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7. Replace the fuse holder drawer, power cord,
and Manifold cover.
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8. The POWER ON (4, Figure 13) indicator should
illuminate after the power cord is replaced.
9. Order replacement fuse (Matrx PN 63882532).
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4. The oxygen regulator must be correctly set before
adjusting the nitrous oxide regulator.
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5. While flowing approximately 2 LPM of each gas
from the outlet stations, slowly turn the adjusting
screw with an allen wrench until the Manifold gauge
reading matches the readings in Figure 17. Turn the
adjusting screw clockwise (inward) to increase
pressure or counterclockwise (outward) to
decrease pressure.
6. Replace the acorn nut.
7. Check the Manifold gauge pressure again.
8. Stop the gas flow from the outlet station.
9. To calibrate FLO-SAFE, see the detailed
procedure in Section 9.
MX107000
7.3 GAS CYLINDER REPLACEMENT
After a gas cylinder has been replaced, press
the corresponding white button labeled “PRESS
AFTER REPLACING” (2, 6, Figure 13) on the
Control Module.
FIGURE 15. Fuse Replacement
18
MAINTENANCE
MANIFOLD
MANIFOLD REGULATOR
PRESSURE GAUGE
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MANIFOLD REGULATOR
PRESSURE GAUGES
DUAL STAGE O2
GAS REGULATOR
PRESSURE GAUGES
N2O
O2
O2
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N2O
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SINGLE STAGE N2O
GAS REGULATOR
PRESSURE GAUGES
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DUAL-STAGE
GAS REGULATOR
PRESSURE GAUGE
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Cylinder Regulator Adjustment
TO MANIFOLD
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Check Figure 19 to determine if adjustment is
necessary. Regulators are factory preadjusted and should rarely need adjustment.
If adjustment is needed, follow the procedure
of Section 7.2, Steps 1 through 9.
TO TANK
Caution: Always replace the locking acorn
nut after completing adjustment.
ADJUSTMENT DETAIL
ROTATED 90°
LABEL
ACORN
NUT
ADJUSTING SCREW
REQUIRES
ALLEN WRENCH
NOTE: DUAL-STAGE
REGULATOR SHOWN.
SINGLE-STAGE
ADJUSTEMENT
PROCEDURE IS
IDENTICAL
LARGE ACORN NUT COVERING
ALLEN HEAD ADJUSTING SCREW
AT LABELED END OF REGULATOR
MX107100
FIGURE 16. Regulator Types and Pressure Adjustment
19
MAINTENANCE
CAUTION: Be sure adjustment is necessary before changing gas regulator setting!
Site adjustment is rarely required. Your gas regulators are factory adjusted to compensate for
the changes in tank pressure that occur as gas is used. Regardless of whether the regulator is single
or dual stage, the factory setting should always read within the green zone (50 to 60 psi) of the
Manifold gauge. Do not adjust regulator unless reading is outside of the green zone.
Nitrous Oxide Regulation (Standard N2O Single-Stage Regulator)
INDICATOR WITHIN GREEN ZONE
DO NOT ADJUST REGULATOR
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If SELECTED nitrous oxide gas regulator gauge reads
800 - 100 psi, the Manifold nitrous oxide gauge must read
within the green zone (50 to 60 psi). Adjust only if reading is
outside of the zone. Factory-adjusted single-stage regulators
register at the low end of the green zone when tank pressure is
high, moving toward the high end as the tank nears depletion.
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If SELECTED nitrous oxide gas regulator gauge reads
200 - 0 psi, do not adjust; replace (switch) tank.
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Nitrous Oxide Regulation (Optional N2O Dual-Stage Regulator)
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If SELECTED nitrous oxide gas regulator gauge reads
800 - 200 psi, the Manifold nitrous oxide gauge must
read within the green zone (50 to 60 psi). Adjust only if
reading is outside of the zone.
INDICATOR WITHIN GREEN ZONE
DO NOT ADJUST REGULATOR
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If SELECTED nitrous oxide gas regulator gauge reads
200 - 0 psi, do not adjust; replace (switch) tank.
Oxygen Regulation (Standard Dual-Stage O2 Regulator)
If SELECTED oxygen gas regulator gauge reads 2200 - 400
psi, the Manifold oxygen gauge must read within the green
zone (50 to 60 psi). Adjust only if reading is outside of the
green zone.
INDICATOR WITHIN GREEN ZONE
DO NOT ADJUST REGULATOR
If SELECTED oxygen gas regulator gauge reads 400 - 0 psi,
do not adjust; replace (switch) tank.
MX107200
FIGURE 17. Regulator Adjustment Related to Tank Pressure
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CALIBRATION AND TROUBLESHOOTING
SECTION 8.0
This section gives the manifold calibration procedure,
provides symptom/problem/solution tables; details how
to perform a global reset, and offers troubleshooting tips.
3. After the global reset, the Manifold selector knob
will be positioned at four o’clock. Both the N2O
and O2 TANK STATUS icons should indicate that
the right hand tanks are now in use. This is true
providing that both right-hand tanks have gas in
them.
8.1 FLO-SAFE MANIFOLD CALIBRATION
This section provides the calibration procedure that
must be performed at initial start-up and after
correction of any lockup condition, or any problem
involving the regulators, gauges or pressure switches.
Always calibrate FLO-SAFE before calling Matrx by
Midmark for service.
4. Verify that Manifold pressure of each gas is set
according to tank volume as shown in Figure 17.
If necessary, adjust the oxygen regulator first and
then the nitrous oxide regulator.
NOTE: To calibrate the FLO-SAFE Manifold,
all four tank cylinders must have at least
200 psi pressure.
5. Look at the O2 side first. If the pressure is too
low, adjust the regulator clockwise. If too high,
adjust the regulator counterclockwise ½ turn
and then bleed the system from an outlet station.
Because the system is already pressurized, it
must be bled to decrease line pressure.
To calibrate:
1. Open all four gas cylinder valves.
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6. Repeat procedure for the N2O side. If the pressure
is too low, adjust the regulator clockwise. If too high,
adjust the regulator counterclockwise ½ turn and
then bleed the system from an outlet station.
Because the system is already pressurized, it
must be bled to decrease line pressure.
Using a pencil tip or small tool, gently press
and hold the code-reset button through the
small hole just above the words MANUAL
OVERRIDE on the Control Module.
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While holding the code-reset button, press
both white tank replacement service buttons.
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Release all three buttons. The global reset
is complete.
7. Close the cylinder valve on the right-hand
oxygen cylinder.
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2. Perform a GLOBAL RESET (refer to Figure 18)
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9. Next, calibrate the nitrous side. Close the right
N2O tank. Bleed the system from an N2O outlet
station until a low alarm is triggered (Alarm Panel
LOW NITROUS OXIDE icon illuminates and
repeating beep sounds). You are doing this to
switch the system to the left N2O tank. Set the
left N2O regulator using the Figure 17 guidelines.
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GENTLY DEPRESS
CODE RESET BUTTON
WITH POINTED OBJECT
8. With the left O2 tank open and the right tank closed,
bleed the system from an O2 outlet station until a
low alarm is triggered (Alarm Panel LOW OXYGEN
icon illuminates and repeating beep sounds). You
are doing this to switch the system to the left O2
tank. Now repeat Step 6 to verify line pressure at
the left O2 tank.
10. Reopen all tank valves.
11. Your system is now calibrated.
PRESS BOTH SERVICE
BUTTONS SIMULTANEOUSLY
MX107300
FIGURE 18. Global Rest
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TROUBLESHOOTING
8.2 PROBLEMS AND SOLUTIONS
FLO-SAFE self-test diagnostics greatly facilitate
troubleshooting. When the diagnostics detect an
abnormal condition, the SYSTEM STATUS icon and one
or more of the associated letters A, B or C will illuminate.
The table below lists the problems indicated by the
Symptom
various letter combinations and offers corrective action
(solutions). The SYSTEM STATUS trouble codes appear
both at the Alarm Panel (7, Figure 13) and Manifold
Control Module window (8, Figure 15). After a problem
has been corrected, it may be necessary to do a global
reset as described in Section 8.3 before returning FLOSAFE to service.
Problem
Solution
Check modular connectors (jacks).
Check terminations at wall plate.
Check wiring for breaks.
Check terminations at Manifold.
Check ALARM jack at Manifold.
Alarm not receiving communication.
SYSTEM STATUS B
Manifold not receiving communication.
Same checks as SYSTEM STATUS A.
SYSTEM STATUS C
• System operating manually.
Selector knob set to MANUAL
OVERRIDE.
• Position switch or circuit defective.
• Press both SERVICE buttons (Fig. 13) or press
ON/OFF button (Fig. 11) to restart automatic
operation.
• Check wiring and jack to SWITCHES port.
Observe mechanical switching action. If broken
wires or levers are noted, call for service.
SYSTEM STATUS AB
Manifold computer or circuit board
defective.
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SYSTEM STATUS A
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•
•
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•
• Globally reset the system (Sec. 8.3).
• If global rest fails, call for service.
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• Check that motor cable jack is seated in MOTOR
port and that motor moves to position the switches.
• Check that the SWITCHES jack is seated and
associated wiring is intact.
Position not found.
SYSTEM STATUS BC
One position switch or circuit is not
working but the system is still in automatic
operation.
SYSTEM STATUS ABC at
Alarm Panel (Fig. 11)
and/or Control Panel
MANUAL OVERRIDE
(Fig. 13) illuminated.
• System is operating manually.
• Manifold selector knob is aligned with
blue mark on Manifold cover at 12 o'clock;
all tanks are supplying pipeline.
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SYSTEM STATUS AC
• Check wiring and jack to SWITCHES port.
Observe mechanical switching action. If broken
wires or levers are noted, call for service.
• Press both SERVICE buttons (Fig. 13) or press
ON/OFF button (Fig. 11) to restart automatic operation.
• Power cord unplugged.
• Fuse blown.
• Circuit breaker tripped.
High pressure on gauge.
Regulator improperly set.
Calibrate (Sec. 8.1); reset as needed (Sec. 7.2).
HIGH or LOW Alarm
(Fig. 11) but gauges show
normal pressure.
Break in pressure switch circuit.
Check pressure switch signal wires and
SWITCHES jack for breaks, damage at both the
Manifold and Zone Valve.
LOW Alarm (Fig. 11)
low gauge but good tank.
• System in manual operation.
• Tank cylinder valve closed.
• Regulator improperly set.
• If selector knob is at 12 o'clock (MANUAL
OVERRIDE), press both SERVICE buttons
(Fig. 13) or press ON/OFF button (Fig. 11) to
restart in automatic.
• Open cylinder valve
• Calibrate (Sec. 8.1); reset as needed (Sec. 7.2).
System loses pressure
overnight or tank empties
too fast.
Leak in system.
Disconnect heads and identify and repair leak.
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Control Panel POWER
ON indicator (Fig. 13)
does not light when main
power (at breaker) is on.
• Plug in cord; do a global reset (Sec. 8.3).
• Remove plug and reset fuse (Sec. 7.1); do a
global reset (Sec. 8.3).
• Check circuit for shorts; reset breaker and do a
global reset (Sec. 8.3).
• If problem continues, set selector knob to
MANUAL OVERRIDE to provide gas.
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TROUBLESHOOTING
Symptom
Problem
Solution
• False low pressure indicator.
• Break in pressure switch circuit.
• High gas flow.
No gas, LOW alarm (Fig. 11)
but Manifold gauge indicates
adequate pressure.
Zone valve closed.
Open Zone Valve.
No gas, LOW alarm (Fig. 11)
but no switchover.
SERVICE button (Fig. 13) not pressed
when EMPTY icon (Fig. 13
came on.
Press appropriate SERVICE button (Fig. 13).
Beep sounds but system does
not respond when controls are
depressed.
• Buttons being pressed too rapidly.
• Communications error.
• Allow longer interval between button selections.
• Check SYSTEM STATUS indicators.
EMPTY indicator (Fig. 13)
goes off but NO RESERVE
indicator (Fig. 13) remains on
after SERVICE button (Fig. 13)
is pressed.
SYSTEM STATUS C -- operating
manually or in manual override, in
which case the MANUAL
OVERRIDE icon (Fig. 13) will be
illuminated.
Entering SECURITY code does
not enable system.
• Code Control buttons (Fig.11)
pressed too rapidly (insufficient
interval).
• Wrong security code entered.
• Enter security code more slowly.
• Enter correct code. If code is unknown, press
Code Reset button (Fig. 13) with thin tool to
revert to factory default code, 1.
Loud popping sound at Manifold.
Pressure relief valve is opening.
Reduce high pressure. Calibrate (Sec. 8.1); rest as
needed (Sec. 7.2).
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Tank switchover occurs but tank is
good (has adequate pressure)
• Calibrate (Sec. 8.1); reset as needed (Sec. 7.2).
• Check wiring and jack to SWITCHES port.
Observe mechanical switching action. If broken
wires or levers are noted, call for service.
• Reduce high gas flow. Replace single-stage
regulators with dual-stage regulators.
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NO RESERVE indicators are always illuminated in
the manual mode. Press both SERVICE buttons
(Fig 13) or press ON/OFF button (Fig.11) to
restart in automatic.
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8.3 GLOBAL RESET (Refer to Figure 20)
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1. Using a pencil tip or small tool, gently press and hold
the code-reset button through the small hole just
above the words MANUAL OVERRIDE on the
Control Module.
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2. While holding the code-reset button, press both
white tank service buttons.
3. Release all buttons
4. The selector knob should move through several
positions before stopping at the 4 o’clock position.
5. A global reset reverts any security code to the
original factory default code (1). See section 6.3
to change the security code.
8.4 TROUBLESHOOTING TIPS
1. Pressure Indicators
When troubleshooting false alarms, remember the
following about the pressure switch circuits:
•
If the Manifold pressure gauges indicate actual
line pressure is high or low, an illuminated HIGH
or LOW Alarm Panel indicator is valid.
•
The Alarm displays only one pressure alarm per
gas at a time, with LOW taking priority.
•
To view the pressure indicators on the Control
Module, the Manifold cover must be removed.
•
A HIGH indicator illuminated at the Control Module
indicates a break in the pressure switch circuit,
including both the Manifold and Zone Valve.
•
A LOW indication at the Control Module indicates
a break in the pressure switch circuit of the
Manifold only.
•
A LOW indicator illuminated at the Alarm only
indicates a break in the low pressure switch
circuit of the Zone Valve.
•
The terminal strip marked Zone Valve has four
circuits; wire colors are the same for each of the
circuit. To test a circuit, place a piece of wire or
paper clip across two like-colored terminals,
shorting or bypassing that circuit. Any alarm initiated
by the bypass circuit would no longer be illuminated,
thus indicating the fault is in that circuit. This jumper
technique can also be used at a pressure switch or
the pressure switch assemblies in the Zone Valve.
2. Position Switches and Selected Indicators
When troubleshooting positioning problems SYSTEM
STATUS C, AC, BC, and Manual Override, it is
important to remember:
•
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The selected indicators do not indicate which
position switches are activated when the system
is operating automatically.
REPLACEMENT PARTS
SECTION 9.0
The FLO-SAFE Manifold and Alarm System replacement parts may be ordered by your authorized dealer from:
Matrx by Midmark
145 Mid County Drive
Orchard Park, New York 14127
800 MIDMARK [643-6275] (Customer Service)
888 279 1260 (Technical Service)
www.midmark.com
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SERVICE AND WARRANTY
All repairs unless otherwise specified should be
performed by an authorized Matrx by Midmark service
representative.
Subject to the next sentences, Matrx by Midmark
warrants that each product be free from defects in
workmanship and materials, under normal use and with
appropriate maintenance for the time listed below,
commencing from the date of delivery to the customer.
Call 1-800-MIDMARK for Customer Service
FLO-SAFE Manifold with Security: 1 year
FLO-SAFE Manifold without Security: 1 year
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10.1 RETURNED GOODS PROCEDURE
All returns must be made through an authorized Matrx
by Midmark dealer. Units for repair should be sent to
Matrx by Midmark and packaged in the original shipping
container if possible. Enclose a letter detailing the
difficulties experienced and the repairs you feel are
necessary. Please contact our Customer Service
Department prior to shipping the unit prepaid.
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SECTION 10.0
Ship to:
Matrx by Midmark shall not be liable for any damage,
injury or loss arising out of the use of the product,
whether as a result of defect of the product or otherwise,
if prior to such damage, injury, or loss, the product was
one (1) damaged or misused; (2) repaired, altered or
modified by persons other than Matrx by Midmark.
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Matrx by Midmark
145 Mid County Drive
Orchard Park, NY 14127
Attn: Service Department
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Matrx by Midmark’s obligations for breach of this
warranty, or for negligence or otherwise shall be strictly
and exclusively limited in repair or replacement of the
product. This warranty shall be void on a product on
which the serial number has been altered, defaced or
removed.
For international returns, contact your local Matrx by
Midmark dealer.
UNDER NO CIRCUMSTANCES SHALL MATRX BY
MIDMARK BE LIABLE FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES AS THOSE TERMS ARE
DEFINED IN THE UNIFORM COMMERCIAL CODE.
10.2 WARRANTY
This warranty is given in lieu of all other warranties,
expressed or implied, of merchantability, fitness for a
particular purpose or otherwise.
No statement or claim about the product by any
employee, agent, representative, or dealer of Matrx by
Midmark shall constitute a warranty by Matrx by
Midmark or give rise to any liability or obligation of Matrx
by Midmark.
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145 Mid County Drive
Orchard Park, New York 14127
800 MIDMARK [643-6275] (Customer Service)
1-800-Midmark
888 279
1260 (Technical Service)
www.midmark.com
www.midmark.com
Part No. 10376600 Rev. E