PRINCE CASTLE
(For Reference Use Only)
1
Prince Castle
Universal Rapid Toaster
2
340- Universal Rapid Toaster
Model Number
Voltage
Watts
Amps
Hz
340-T
208
4743
22.8
60
340-TCE
220-240
5473
24.87 – 22.8
50/60
Both models are single Phase
Two halves together make up
One half is
340-URT Domestic
340-T Domestic
340-URTCE International
340-TCE International
3
Warranty
 This product is warranted to be free from defects in material and/or
workmanship for a period of (2) years from date of original installation,
not to exceed 30 months from date of shipment from our factory or
240,000 cycles . Any part or component which proves to be faulty in
material and/or workmanship within the warranty period will be replaced
or repaired (at the option of Prince Castle, Inc.) without cost to the
customer for parts, labor, and travel.
This warranty is subject to the following exceptions/conditions:
 Use of non-genuine Prince Castle parts voids this warranty and all work
must be performed by an authorized Prince Castle Agent.
 All labor shall be performed during regular work hours. Overtime
premium will not be covered.
 Travel charges are limited to 100 miles (163 Kilometers) round trip, 2
hours travel time, one trip per repair.
 Damaged caused by carelessness , neglect, and/or abuse (e.g., electrical
components, or improper cleaning) is not covered.
 Equipment damaged in shipment, by fire, flood or an act of God is not
covered.
4
Warranty
!
CAUTION
 Do NOT use anything abrasive because it will scratch the
platens, which could cause bun sticking. Only use URT
cleaning sponge and sanitized towel wrapped around the
head of the cleaning tool to clean the platens. Do not use
abrasive materials such as scrapers, steel wool, etc. to clean
the buffered Bun Landing Zone or exterior of the unit, as
damage to the surface could occur. Failure to follow the
correct cleaning procedure and or damage to the platen due
to scratches is not covered under the provisions of the
warranty.
 Do NOT use any unapproved agents or cleaning solutions
inside or on the surfaces of the toaster unit.
5
Warranty
Cycle Count
 All warranty claims for
340-URT MUST include
cycle count.
To retrieve cycle count
 When the toaster is in
toasting mode press and
hold the “I” button.
 While holding the “I”
button scroll by pressing
the “UP or DOWN” arrow
until you find the product
you want (i.e. Bun, Bagel,
or muffin) and the display
shows the cycle count (see
photo).
BUN TIME(CNT)
17 SECS( 4191)
6
Factory Presets
FACTORY PRESETS
 NOTE: All previously saved
settings are lost upon resetting the
defaults! Use with caution.
 To reset all settings to
manufacturer’s defaults, turn the
unit OFF. Then, press and hold
the PRINCE CASTLE (logo)
button together with the UP &
DOWN buttons and turn the
power on and continue to hold all
3 buttons for 3 seconds until the
display reads “Presets Loaded”.
The display will read “WAIT” for
approximately 10 seconds and
then “OFF” until the internal set up
is complete.
7
Temperature Setting
Temp Settings
 To change temp setting between
Fahrenheit and Celsius, turn
toaster off.
 For Fahrenheit, press and hold the
up arrow and turn the toaster on.
Display will say Fahrenheit.
 For Celsius, press and hold the
down arrow and turn the toaster
on. Display will say Celsius.
8
Heater Left
Orientation
Right I.R.; SSRelay 1
I.R.; SSRelay 5
Facing the unit from
the display side
starting from your
right count the
heaters as shown in
the picture.
Crown
Left Club;
SSRelay 4
Heel
Front Club;
SSRelay 2
Main Platen;
SSRelay 3
9
Relay Orientation
 Starting from the top
each relay is specific to
each heater and one
for the heated landing
shelf.
Front I.R.
Front Club
Main Platen
Rear Club
Rear I.R.
Front Landing
Chute
 Note: unit without a
front heated landing
zone is not using relay
#6, this can be used as
a spare relay






1
2
3
4
5
6
=
=
=
=
=
=
1
2
3
4
5
6
10
CALIBRATING HOME POSITION
1.
Press PRODUCT button until
BUN appears in the display.
2.
Press the PRINCE CASTLE
button and hold until you enter
PROGRAM MODE.
3.
Press UP or DOWN button until
EXIT PROGRAMMING appears.
4
1
3
4.
Press LIGHTER & DARKER
buttons together to enter the
Compression Plate Calibration
Home Position
2
11
CALIBRATING HOME POSITION
Compression Adjustments
NOTE: The gauge is provided. It is
located on the bracket of the motor
board.
1.
Use a ½ “ (.500) spacer and place
it 1” inside the heal opening.
NOTE: Be Careful not to scratch
Platen.
2.
Using the UP& DOWN arrows
adjust the compression plate to
make the spacer snug (not tight or
loose) between the compression
plate and the platen.
3.
Press “I” button to save the new
home position of the compression
plate.
4.
Press The PRINCE CASTLE
button to exit.
5.
Press the start button to cycle the
toaster one time.
NOTE: This needs to be done after the
Main PCB, Motor, or Motor PCB are
replaced
12
Source
voltage
Power
Switch
TB3
TB1
Power
Relay
TB2
Ice Cube
Relay
SSR6
Left IR
Right IR
Fuses + Chute
Before Power Sw. closes
After Power Sw. and
Power Relay closes
After Ice Cube Relay
closes
SSR5
SSR4
____R-Club___
SSR3
_____Main____
____F-Club___
SSR2
After SSRelays close
SSR1
13
RELAY SSD
 When the green Light on
the relay is illuminated, the
voltage across the AC
terminals (1/L1 & 2/T1)
should be low. Less than
one Volt AC.
 When the green light is off,
voltage across the AC
terminals should equal
supply voltage (i.e. 208V or
240V AC).
14
MECHANICAL RELAY
 Mechanical relay “K2” (Ice Cube
Relay) changes loads when the
solenoids are activating. Check at
Terminal A&B or at PCB at “J24”.
Should equal 0 VDC when it is off
and 24 VDC when it is on.
 Also the light on PCB at location
“D16” will light when relay is on.
 This relay has a 24V DC coil.
Removing relay “K2”
● Remove front screw.
● Loosen rear screw, DO NOT remove.
● Relay should slide out.
15
MECHANICAL RELAY
 Mechanical relay “K1” applies
power to the unit after the
power switch is turned on.
This relay supplies power to the
toaster.
 At tabs 1&0 check for voltage.
When the power switch is off it
should equal 0 volts AC and
when the power switch is on it
should equal power source (i.e.
208V AC or 240V AC)
16
MAIN PCB
 Verify power going through
the Main PCB by checking
at locations “P1” & “P4”
which are located behind
the transformer.
 Voltage should equal power
source (i.e. 208V or 240V ).
 5/16” Nut is used to hold
the PCB in location.
17
Main PCB
 To verify power is going to the
main PCB check location “J21”.
 At “Blk & Org” wires should
equal 24V DC.
 At “Blk & No Wire” should
equal 5V DC.
18
Main PCB
 To verify power is going
through the main PCB
check at “D5” and “D20”.
 At “D5” (24V DC) green
light should be on.
 At “D20” (5V DC) green
light should be on.
19
Compression Plates not moving
Verify compression plates are not damaged/bent
Comp. plates are bent, bend
back to correct position
Comp. plates are not
bent
Check motor/encoder LED at D1. LED should be
orange: 24 VDC & 5 VDC
LED is green:
5VDC, replace
motor. 340-682S
LED is red:
24VDC, replace
motor. 340-682S
Motor is grinding or slow
reaction time, replace
motor. 340-682S
20
Motor/Gear Box & Motor Board
 The motor opens and closes
the Compression plates.
 Check at connector “J1”
“BLK & ORG” wires and
should equal 24V DC.
 Check at Connector “J2”
“Violet & Gray” wires (top 2)
should equal 5V DC.
 At “D1” Power Light when it
is Green that means 5V DC
Red means 24V DC, and
orange means both 5V &
24V being applied.
 If orange light is on and the
compression plates are not
moving problem can be
motor/board.
21
Solenoids
 Solenoids control the gates that
release the product from the toaster.
 Check Voltage on Main PCB at
Location “J22” for the main side.
“Red & Blue” should equal source
voltage (i.e. 208V or 240V AC). “Blu
& Org” should measure < 1V AC.
 Check Voltage on Main PCB at “J23”
for solenoids on opposite side. “Blk
& Blu” should measure < 1V AC and
“Blu & Brwn” should equal source
Voltage (i.e. 208V or 240V AC).
 11/32” Nut driver
22
Bagels/Muffins not toasting properly
Crown and Heel side not toasting
Check voltage at J24 on Main Brd.
Should be 24 VDC
Less than 24 VDC
replace main brd.
Voltage 24 VDC
Crown or Heel side not toasting
Check resistance of suspect IR Heater.
Should be 19-21 Ω
More than 25 Ω,
replace IR Heater
Check voltage at Ice Cube
Relay. Should be 208 VAC
Less than 208 VAC
replace Ice Cube
Relay
Voltage 208 VAC
Resistance 20 Ω
Check voltage at SS Relay.
Should be 208 VAC
Less than 208 VAC
replace SS Relay
Check wiring
Check resistance of IR
heaters. Should be 19-21 Ω
More than 25 Ω
replace IR heaters
23
Infrared Heaters (IR)
 Check voltage at the tab of
black terminal block (next
to bottom relay) and top
relay.
 Voltage should equal
200V/240V AC when the
relay’s green light is off.
 When toaster power is off,
check resistance between
two IR Heater wires.
Should be between
19-21 Ω.
24
Buns not toasting properly
Verify compression plates are not damaged/bent
Comp. plates are bent, bend
back to correct position
Comp. plates are not
bent
Verify the comp. plates are compressing buns
Not compressing,
see comp. plate
troubleshooting
Compressing,
reset home
position. See
page
Check Bun cut, verify cut is
even through the bread
25
Main Platen
 Check voltage and
resistance at cal rods on
main platen.
3
 Voltage should equal
source voltage (208V or
240V AC) when the
green light is on at the
3rd relay from the top.
 Resistance (when
toaster is off) should be
30 Ohms +/- 15% at
room temperature.
Disconnect both leads
when measuring.
26
Club Platens
 When toaster power
is off, remove Gray
platen wires from
TB3 and SSRelay 2
or SSRelay 4. Check
resistance from Gray
platen wires, should
be 177 Ω +/- 15%
at room
temperature.
2
27
Toaster will not come out of warm-up mode
Press and hold the “I” button, using the up or down
arrow check the temperature for each platen.
R-Club (left) platen is not
reaching set point temp.
F-Club (right) platen is not
reaching set point temp.
Check temp probe, unplug
connector at J15 and check
resistance. Should be
1091 Ω +/- 3% at room
temperature
Close to 0 Ω or open,
replace temp probe.
340-243S
Close to 0 Ω or
open, replace club
platen. 340-275S
Check temp probe, unplug
connector at J17 and check
resistance. Should be
1091 Ω +/- 3% at room
temperature
1091 Ω +/- 3% at room
temperature, check club
platen. Should be 177 Ω
+/- 15% at room
temperature.
177 Ω +/- 15% at room
temperature, check to make
sure wires are not pinched
and/or damaged
Close to 0 Ω or open,
replace temp probe.
340-243S
Close to 0 Ω or
open, replace club
platen. 340-275S
28
Toaster will not come out of warm-up mode
(Cont.)
Press and hold the “I” button, using the up or down
arrow check the temperature for each platen.
Main platen is not
reaching set point temp.
Check temp probe, unplug connector at J16
and check resistance. Should be 1091 Ω
+/- 3% at room temperature
1091 Ω +/- 3% at room temperature, check
main platen. Should be 30 Ω +/- 15% at
room temperature.
Close to 0 Ω or
open, replace club
platen. 340-269S
30 Ω +/- 15% at room
temperature, check to make
sure wires are not pinched
and/or damaged
29
Temperature Probes

To check temperature probes
disconnect connections on main
PCB. Should equal 1091 Ω +/3% at room temperature.
Right club platen check
connector at “J15”.
(Red & White wires)
 Main Platen check connector at
“J16”.
(Hi-temp wires)
 Left club Platen check connector
at “J17”.
(Red & White wires)
 Front Chute check connector at
“J18”
(Brown & Red wires)
NOTE: Be sure to connect probes
back into correct location
(runaway condition may occur).
NOTE: If display reads 1000
degrees, then the probe is not
plugged in.

30
Both gates are not functioning
properly
Verify gates are not damaged/bent
Gates are bent, replace
gates 340-360S
Gates are
not bent
Check voltage at J24 on Main Brd.
Should be 24 VDC
Less than 24 VDC
replace main brd,
340-375S.
Voltage 24 VDC
Check voltage at Ice Cube
Relay. Should be 208 VAC
Less than 208 VAC
replace Ice Cube
Relay, 65-062-08S
31
Left gate not functioning properly
Left Gate is not functioning properly
Perform gate adjustment, see 340-515 pg3
Verify gates are not damaged/bent
Gates are
not bent
Gates are bent, replace
gates 340-360S
Verify Main PCB is not damaged or
burnt on RX1, RX2, RX3 or RX4
Main PCB is
damaged, replace
board 340-375S
Main PCB is not
damaged
Verify if gate are not opening or closing
If gate is not opening,
replace control-side
right solenoid, 85-125S
If gate is not closing,
replace control-side left
solenoid, 85-125S
32
Right gate not functioning properly
Right Gate is not functioning properly
Perform gate adjustment, see 340-515 pg3
Verify gates are not damaged/bent
Gates are bent, replace
gates 340-360S
Gates are
not bent
Verify Main PCB is not damaged or
burnt on RX1, RX2, RX3 or RX4
Main PCB is
damaged, replace
board 340-375S
Main PCB is not
damaged
Verify if gate are not opening or closing
If gate is not opening,
replace noncontrol-side
right solenoid, 85-125S
If gate is not closing,
replace noncontrol-side
left solenoid, 85-125S
33
Gates
 Bushing is to be
installed through
gate with long rod
end first.
Short rod end is
End without rod is installed
installed to the inside
to the inside on both sides.
on both sides
 First feed gates
through the opening
in toaster upright
from the inside.
Bushings can then
be inserted from the
outside through the
opening one side at
a time.
34
Display states “OFF” no response
from touchpad
Remove Control side cover. Remove
connectors at J7 & J8.
Normal display comes back
Plug in one connector at a time,
until symptom comes back.
Replace corresponding Start
Switch.
Display states “OFF”
Main PCB is defective, replace
main PCB.
35
Touch pad not responding
Verify start switch is not defective
See troubleshooting pg. 34
Start switch is good
Verify all wiring is connected
and not damaged.
Replace display board,
340-358S
36
Start Switch not responding
Verify if it is both switches not
responding
Both switches not
responding.
Verify the switches are
connected and wires are
not damaged. Replace
main PCB, 340-375S
One switch is not
responding
Verify all wiring is connected and
not damaged. Replace switch,
78-240S
37
Front Chute not heating
Check both 3 A fuses
3 A fuses are blown, replace
fuses. 88-600-3000S
Fuses are good
Check resistance of Chute
heater, should be approx. 198 Ω
Close to 0 Ω or open, replace
Front Chute. 340-FCSS
198 Ω, check temp probe
at J18. should be 1097 Ω
+/- 15% at room temp.
Close to 0 Ω or open, replace
Front Chute. 340-FCSS
should be 1091 Ω +/- 15%
at room temp, check for
damage on wiring harness
Wiring harness damaged,
replace harness. 95-1624S
38
Wiring Diagram
39
Left half Wiring
Diagram
40
Right
half Wiring
Diagram
41
Main PCB
42
Exploded View
No.
Part No.
Description
1
78-240S
Start Switch
2
85-125S
Solenoid
3
340-341S
Shoulder bolt (pkg of 2)
4
340-313S
Rocker
5
340-293
Rocker BKT
6
89-1060S
Collar ¼” w/set screw
(pkg of 8)
7
340-296S
BKT, Pivot RH & LH Rear
8
340-296S
BKT, Pivot RH & LH Rear
9
340-142S
Coupler Assy ( pkg of 2,
includes 10)
10
197-279S
Gear Pin (pkg of 8)
340-299S
BKT, Pivot LH & RH Front*
* Not Shown
43
Exploded View
No.
Part No
Description
No .
Part No.
Description
1
78-240S
Start Switch
2
88-787S
Fuse Holder (pkg of 12)
12
340-682S
Motor & Encoder w/Drive
3
340-375S
Main PCB
13
65-058
SS Relay, 50 amp 208 VAC
4,5,6
340-358S
VFD Display Assy
72-422S
Power Cord*
7
78-241S
Power Switch
88-600-200S
.2 amp 250 V (pkg of 10)*
8
66-045S
Strain Relief
88-600-3000S
3 amp 250 V (pkg of 10)*
9
65-062-08S
SS Relay, DPDT, 30 amp, 24 VDC
340-299S
BKT, Pivot LH & RH Front*
10
65-063-06S
SS Relay, DPST, 30 amp, 200/240 VAC 50/60 Hz
11
77-059S
Terminal Block
44
* Not shown
Exploded View
No.
Part No.
Description
1
340-368S
IR Heater (right)
2
340-360S
Gate kit
3
340-275S
Club Platen (right)
4
340-269S
Main Platen
5
340-275S
Club Platen (left)
6
340-369S
IR Heater (left)
7
340-236S
Club divider
8
340-255S
Overlay (heel & crown)
9
340-451S
Side Panel
340-242S
Main Probe*
8
9
* Not Shown
45
9
Exploded View
No.
Part No.
Description
1
89-1093S
Cotter Pin (pkg of 4)
2
89-1064S
Compression Spring (pkg of 2)
3
340-652S
Rod, Crush Link, Long
4
340-651S
Rod, Crush Link, Short
5
340-142
Coupler Assy w/Pin
89-1063S
Retaining Ring & Small Cotter Pin (pkg of 2)
46