Page 1
SERVICE MANUAL
HEG / RRE / WEG Series Griddle
VULCAN HEG24E
HEG36E
HEG48E
HEG60E
HEG72E
RRE24E
RRE36E
RRE48E
WOLF WEG24E
WEG36E
WEG48E
WEG60E
WEG72E
This Manual is prepared for the use of trained Vulcan Service
Technicians and should not be used by those not properly
qualifi ed.
This manual is not intended to be all encompassing. If you have
not attended a Vulcan Service School for this product, you should
read, in its entirety, the repair procedure you wish to perform to
determine if you have the necessary tools, instruments and skills
required to perform the procedure. Procedures for which you
do not have the necessary tools, instruments and skills should
be performed by a trained Vulcan Service Technician.
The reproduction, transfer, sale or other use of this Manual,
without the express written consent of Vulcan, is prohibited.
This manual has been provided to you by ITW Food Equipment
Group LLC (“ITW FEG”) without charge and remains the property
of ITW FEG, and by accepting this manual you agree that you will
return it to ITW FEG promptly upon its request for such return
at any time in the future.
For additional information on Vulcan-Hart Company or to locate an authorized
parts and service provider in your area, visit our website at www.vulcanequipment.com
VULCAN-HART
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
www.vulcanequipment.com
BALTIMORE, MD 21222
F45490 Rev. A (0315)
Page 2
HEG / WEG / RRE Series Griddle
TABLE OF CONTENTS
GENERAL .................................................................................................. 3
INTRODUCTION ....................................................................................... 3
MODELS COVERED ................................................................................... 3
INSTALLATION ........................................................................................ 3
CLEANING PROCEDURES ............................................................................. 3
TOOLS AND TEST EQUIPMENT ....................................................................... 3
LUBRICATION ......................................................................................... 3
OPERATING CONTROLS .............................................................................. 3
THERMOSTAT ..................................................................................... 3
INDICATOR LIGHT ................................................................................. 3
REMOVAL AND REPLACEMENT OF PARTS ............................................................... 4
GRIDDLE SERVICE POSITION ......................................................................... 4
HEATING ELEMENT REPLACEMENT .................................................................. 4
THERMOSTAT REPLACEMENT ........................................................................ 6
SERVICE PROCEDURES AND ADJUSTMENTS ............................................................ 8
THERMOSTAT CALIBRATION PROCEDURES ......................................................... 8
TESTING VOLTAGE TO HEATER(S) ................................................................... 9
ELECTRICAL OPERATION ................................................................................ 10
PROCEDURE OF OPERATION ....................................................................... 10
24" WIRING DIAGRAM ................................................................................ 11
24" SCHEMATIC ...................................................................................... 12
1 & 3 PHASE ...................................................................................... 12
2 PHASE, 3 WIRE ................................................................................. 12
36" WIRING DIAGRAM ................................................................................ 14
36" SCHEMATIC ...................................................................................... 14
1 & 3 PHASE ...................................................................................... 14
2 PHASE, 3 WIRE ................................................................................. 15
48" WIRING DIAGRAM ................................................................................ 17
48" SCHEMATIC ...................................................................................... 17
1 & 3 PHASE ...................................................................................... 17
3 PHASE, 4 WIRE ................................................................................. 18
60" WIRING DIAGRAM ................................................................................ 19
60" SCHEMATIC ...................................................................................... 20
1 & 3 PHASE ...................................................................................... 20
2 PHASE, 3 WIRE ................................................................................. 21
72" WIRING DIAGRAM ................................................................................ 22
72" SCHEMATIC ...................................................................................... 23
1 & 3 PHASE ...................................................................................... 23
2 PHASE, 3 WIRE ................................................................................. 24
TROUBLESHOOTING ..................................................................................... 26
TROUBLESHOOTING ................................................................................. 26
© HOBART SERVICE 2015
F45490 Rev. A (0315) Page 2 of 27
Page 3
HEG / WEG / RRE Series Griddle - GENERAL
GENERAL
INTRODUCTION
This manual is applicable to the models and ML
numbers on the cover page. Procedures apply to all
models unless specified otherwise.
MODELS COVERED
Vulcan Brand
Models Length Depth
HEG24E 24" 24"
HEG36E 36" 24"
HEG48E 48" 24"
HEG60E 60" 24"
HEG72E 72" 24"
Vulcan Brand
Models Length Depth
RRE24E 24" 24"
RRE36E 36" 24"
RRE48E 48" 24"
Wolf Brand
Models Length Depth
WEG24E 24" 24"
WEG36E 36" 24"
WEG48E 48" 24"
WEG60E 60" 24"
WEG72E 72" 24"
INSTALLATION
TOOLS AND TEST EQUIPMENT
Tools Required
• Standard set of hand tools.
• VOM with AC current tester.
NOTE: VOM sensitive of at least 20,000 ohms/volt
can be used.
Special
• Thermocouple type, griddle or surface mount,
temperature tester.
• 2 each, 8 inch long 4 x 4 wooden blocks.
LUBRICATION
1. Anti seezing coumpound
2. Penetrating oil
3. Finger Nail Polish
OPERATING CONTROLS
Thermostat
With the dial set to the desired setting, the temperature
of the griddle section is maintained. When the
operator turns the thermostat dial to OFF, electrical
power is removed from the heating unit. Each
thermostat controls a 12 inch wide section of the
griddle surface.
Indicator Light
A red light will energize automatically for each section
of the griddle when the thermostat is set, and will deenergize when the section has reached the thermostat
setting. The light will energize and de-energize during
the cooking operation to show that current
temperature is being maintained.
Generally, all installation are made by the dealer or
others contracted by the dealer or owner. Detailed
installation instructions are included in the "Installation
and Owners Manual" for the appropriate model.
CLEANING PROCEDURES
Detailed cleaning procedures are included in the
"Installation and Owners Manual" for the appropriate
model.
Page 3 of 27 F45490 Rev. A (0315)
Page 4
HEG / WEG / RRE Series Griddle - REMOVAL AND REPLACEMENT OF PARTS
REMOVAL AND REPLACEMENT OF PARTS
GRIDDLE SERVICE POSITION
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Griddle plate might be hot.
Griddle Service Position
1. Remove thermostat knobs.
2. Remove front trim panel screws and remove front
trim panel.
Do not damage indicator lights when
removing front trim panel.
4. Lift griddle plate up, to add two 4 x 4 blocks
between the griddle plate and left and right sides
of unit, approximately 6 to 7 inches.
Fig. 3
Verify Grease Chute does not raise past
the heater element panel. This helps prevent the top
from sliding to the rear.
Use 4 x 4, or greater, blocks to
support griddle top. Do NOT use 2 x 4 blocks as they
can tip over and lower griddle plate.
Fig. 1
3. Remove griddle plate assembly mounting bolts,
left and right side.
Fig. 2
HEATING ELEMENT
REPLACEMENT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Griddle plate might be hot.
Heating Element Removal
1. Place griddle plate into GRIDDLE SERVICE
POSITION.
2. Remove front heater element jumper wire
connection.
Lift griddle plate straight up to
prevent the griddle plate from sliding to the left or right.
F45490 Rev. A (0315) Page 4 of 27
Page 5
HEG / WEG / RRE Series Griddle - REMOVAL AND REPLACEMENT OF PARTS
Fig. 4
When removing heater element jumper
wire screw, support heater element.
Fig. 7
5. Remove heater element jumper wire on the back
heater element connections.
When removing heater element jumper
wire screw, support heater element. Refer to figure
24666.
Fig. 5
3. Remove element baffle shield.
Fig. 6
4. Remove bulb clamp.
6. Remove heating element pressure plate.
NOTE: Heater element is held into place by the
pressure plate.
Fig. 8
7. Reverse procedures to install.
NOTE: Nuts should be torqued to 30-35 Inch Pounds.
8. See THERMOSTAT REPLACEMENT for proper
installation of the thermostat.
NOTE: Coat threaded studs with high temperature
anti-seize compound prior to putting bolts back on.
NOTE: Tighten nuts to 30-35 inch-pounds.
NOTE: Loosen front and rear bolts and remove
thermostat probe from bulb clamp. Secure thermostat
probe to prevent damage.
Page 5 of 27 F45490 Rev. A (0315)
Over tightening the nuts can cause
damage and prevent the element from moving with
expansion and contraction that can lead to premature
failures.
9. Check for proper operation.
Page 6
HEG / WEG / RRE Series Griddle - REMOVAL AND REPLACEMENT OF PARTS
THERMOSTAT REPLACEMENT
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
Griddle plate might be hot.
Capillary Tube Removal
1. Place griddle plate into
POSITION.
2. Remove front heater element jumper wire
connection.
When removing heater element jumper
wire screw, support heater element.
GRIDDLE SERVICE
Fig. 9
Fig. 11
4. Loosen back bolts to bulb clamp.
5. Remove front bolts to bulb clamp.
Fig. 12
6. Pull thermostat probe to remove.
NOTE: Retain capillary sleeve for new thermostat.
Thermostat Control Removal
1. Remove thermostat connection screws.
NOTE: Note heater element wire locations on the
thermostat connection tabs.
2. Remove thermostat mounting screws.
Fig. 10
3. Remove heater element baffle shield.
F45490 Rev. A (0315) Page 6 of 27
Page 7
HEG / WEG / RRE Series Griddle - REMOVAL AND REPLACEMENT OF PARTS
Fig. 13
3. Remove thermostat heat shield screws.
4. Remove thermostat assembly from unit.
Thermostat Control Installation
1. Install capillary sleeve on replacement
thermostat.
2. Install thermostat to thermostat bracket using
mounting screws.
3. Thread capillary tube through opening located on
the thermostat heat shield.
Secure thermostat capillary tube to
prevent damage, while installing thermostat.
Fig. 15
Capillary Tube Installation
1. Slide capillary tube between bulb clamp and
bottom of griddle plate.
Fig. 16
NOTE: Verify capillary tube is flush against the bottom
of the griddle plate.
2. Tighten bolts. Torque to 30-35 inch pounds.
3. Install baffle shield using HEATING ELEMENT
REPLACEMENT instructions.
Fig. 14
4. Install thermostat bracket with the thermostat
heat shield to the unit.
5. Connect heater wires to the thermostat per the
wire connections noted earlier.
4. Check for proper operation.
Page 7 of 27 F45490 Rev. A (0315)
Page 8
HEG / WEG / RRE Series Griddle - SERVICE PROCEDURES AND ADJUSTMENTS
SERVICE PROCEDURES AND ADJUSTMENTS
THERMOSTAT CALIBRATION
PROCEDURES
1. Clean temperature test section that is not
working. Center temperature tester surface
mount probe in center of thermostat probe. See
table for proper testing locations according to
griddle size.
NOTE: All readings taken 12" from front of griddle.
Griddle Size
24" 6", 18"
36" 6", 18", 30"
48" 6", 18", 30", 42"
60" 6", 18", 30", 42", 54"
72" 6", 18", 30", 42", 54", 66"
2. Set the thermostat to a temperature above
300°F.
3. Allow the thermostat to cycle three times.
4. Note the tester reading when the indicator light
turns ON and OFF.
NOTE: If the difference between the ON and OFF
temperatures is greater than 25°F, replace the
thermostat.
5. Add these two temperatures together, then
divide the sum by 2 to obtain an average
temperature.
A. If the average temperature is within 15°F of
the set temperature, the thermostat is
calibrated.
B. If the average temperature is not within 15°F
of the set temperature:
1) Remove thermostat knob.
2) Insert a flathead screwdriver into
thermostat dial stem until it reaches the
calibration screw.
Distance(s) From Left
Edge of Griddle
Fig. 17
3) Turn adjustment screw CCW to
increase and CW to decrease
temperature.
Fig. 18
NOTE: A 1/4 turn equals 18°F change.
6. Replace knob and repeat steps 3 and 5 until
average temperature is within 15°F of set
temperature.
7. Reseal adjustment screw to prevent movement.
NOTE: Finger nail polish can be used to reseal screw
to prevent movement.
8. If thermostat cannot be calibrated, replace
thermostat as outlined under THERMOSTAT
REPLACEMENT.
F45490 Rev. A (0315) Page 8 of 27
Page 9
HEG / WEG / RRE Series Griddle - SERVICE PROCEDURES AND ADJUSTMENTS
TESTING VOLTAGE TO HEATER(S)
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1. Test supply voltage to verify it is correct.
2. Turn power off to griddle.
3. Place griddle into GRIDDLE SERVICE
POSITION.
4. Connect voltmeter to leads of heating element in
question.
5. Set meter on the appropriate range, determined
by line voltage rating stamped on griddle data
plate.
VOLTS COLOR CODE POWER AMP RESISTANCE
208 YELLOW 2.7kW 13 16
240 RED 2.7kW 11.3 21.3
480 GREEN 2.7kW 5.6 85.7
1. Values in table are nominal. Tolerance is +5/-10%.
NOTES:
2. Resistance values (ohms) are @ 77°F room temperature.
6. Turn on electrical power.
7. Turn thermostat to 350°F.
A. Pilot light will energize.
8. Reading should agree with the voltage rating
stamped on the griddle data plate.
A. If voltage reading is incorrect, and the line
voltage is correct, the thermostat is not
functioning properly.
B. If current draw is correct, then heating
element is functioning properly. See table
below for proper values.
Page 9 of 27 F45490 Rev. A (0315)
Page 10
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
ELECTRICAL OPERATION
PROCEDURE OF OPERATION
1. Refer to the schematic in the appropriate
electrical diagram at the end of this section to
trace circuits explained in this section.
2. The electrical connection(s) to the griddle are
made in the junction box.
A. Detailed information about the electrical
connections to the griddle is contained in the
"Installation and Owners Manual".
3. From the junction box, one electrical connection
is made to the thermostat. The other electrical
connection is made to the common side of the
two heating elements which the thermostat
controls.
4. With the dial set to "OFF", the thermostat
contacts are open.
5. Turn dial to 350°F.
A. The thermostat contacts close, electrical
power is applied to the heating elements,
the griddle begins to heat.
B. The indicator light energizes.
6. When the griddle surface reaches 350°F, the
thermostat contacts open and electrical power is
removed from the heating elements.
A. The indicator light de-energizes.
7. The thermostat will cycle the heating elements
and indicator light to maintain the griddle
temperature.
F45490 Rev. A (0315) Page 10 of 27
Page 11
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
24" WIRING DIAGRAM
24" WIRING DIAGRAM
Notes:
1. For supply connections, use copper wire sized in accordance with the national electrical code and suitable for
at least 90°C (194°F).
2. Lead marker numbers are the same as lead item numbers unless otherwise specified.
3. Wiring to be:
A. 10G,m 532515 - leads 1, 5, 6, 10, 11, J and GRD.
B. 18GA., 532518 - leads 2 and 3.
Page 11 of 27 F45490 Rev. A (0315)
Page 12
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
24" SCHEMATIC
1 & 3 PHASE
208, 240, & 480 VAC, 1 & 3 PHASE
X-Y Y-Z X-Z TOTAL
kW PER LINE 5.4 5.4 0.0 10.8
NOMINAL AMPS PER LINE
3-PHASE 1-PHASE
X Y Z -
208 22.5 45.0 22.5 51.9
240 19.5 39.0 19.5 45.0
480 9.7 19.5 9.7 22.5
FOR 3-PHASE:
1. Connect wire #5 to L1.
2. Connect wire #6 & #11 to L2.
3. Connect wire #10 to L3.
FOR 1-PHASE:
1. Connect wire #5 & #10 to L1.
2. Connect wire #6 & #11 to L2.
2 PHASE, 3 WIRE
1 & 3 PHASE
220/380 & 240/415 VAC. 2-PHASE, 3 WIRE
L1-N L2-N L3-N
kW PER LINE 5.4 5.4 0.0
F45490 Rev. A (0315) Page 12 of 27
Page 13
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
NOMINAL AMPS PER LINE
L1 L2 L3 N TOTAL kW
220/380 5.2 5.2 0.0 3.4 9.1
240/415 5.6 5.6 0.0 3.8 10.8
FOR 2-PHASE, 3 WIRE:
1. Connect wire #5 & #10 to neutral ("N").
2. Connect wire #11 to L1.
3. Connect wire #6 to L2.
2 PHASE, 3 WIRE
Page 13 of 27 F45490 Rev. A (0315)
Page 14
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
36" WIRING DIAGRAM
36" WIRING DIAGRAM
Notes:
1. For supply connections, use copper wire sized in accordance with the national electrical code and suitable for
at least 90°C (194°F).
2. Lead marker numbers are the same as lead item numbers unless otherwise specified.
3. Wiring to be:
A. 10G,m 532515 - leads 1, 4 - 6, 10, 11, J, J2 and GRD.
B. 18GA., 532518 - leads 2 and 3.
36" SCHEMATIC
1 & 3 PHASE
F45490 Rev. A (0315) Page 14 of 27
Page 15
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
208, 240, & 480 VAC, 1 & 3 PHASE
X-Y Y-Z X-Z TOTAL
kW PER LINE 5.4 5.4 5.4 16.2
NOMINAL AMPS PER LINE
3-PHASE 1-PHASE
X Y Z -
208 45.0 45.0 45.0 77.9
240 39.0 39.0 39.0 67.5
480 19.5 19.5 19.5 33.8
FOR 3-PHASE:
1. Connect wire #10 to L1.
2. Connect wire #11 to L2.
3. Connect wire #5 & #6 to L3.
FOR 1-PHASE:
1. Connect wire #5 & #10 to L1.
2. Connect wire #6 & #11 to L2.
2 PHASE, 3 WIRE
1 & 3 PHASE
220/380 & 240/415 VAC. 2-PHASE, 3 WIRE
L1-N L2-N L3-N
kW PER LINE 5.4 10.8 0.0
Page 15 of 27 F45490 Rev. A (0315)
Page 16
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
NOMINAL AMPS PER LINE
L1 L2 L3 N TOTAL kW
220/380 6.9 6.9 0.0 4.6 13.6
240/415 7.5 7.5 0.0 5.0 16.2
FOR 2-PHASE, 3 WIRE:
1. Connect wire #5 & #10 to neutral ("N").
2. Connect wire #6 to L1.
3. Connect wire #11 to L2.
2 PHASE, 3 WIRE
F45490 Rev. A (0315) Page 16 of 27
Page 17
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
48" WIRING DIAGRAM
48" WIRING DIAGRAM
Notes:
1. For supply connections, use copper wire sized in accordance with the national electrical code and suitable for
at least 90°C (194°F).
2. Lead marker numbers are the same as lead item numbers unless otherwise specified.
3. Wiring to be:
A. 10G,m 532515 - leads 1, 4, 8 - 13, J, J2 and GRD.
B. 18GA., 532518 - leads 2 and 3.
48" SCHEMATIC
1 & 3 PHASE
208, 240, & 480 VAC, 1 & 3 PHASE
X-Y Y-Z X-Z TOTAL
kW PER LINE 10.8 5.4 5.4 21.6
Page 17 of 27 F45490 Rev. A (0315)
Page 18
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
X Y Z -
208 67.4 67.4 45.0 103.8
240 58.5 58.5 39.0 90.0
480 29.2 29.2 19.5 45.0
FOR 3-PHASE:
1. Connect wire #10 & #11 to L1.
2. Connect wire #8, #9 & #13 to L2.
3. Connect wire #12 to L3.
FOR 1-PHASE:
1. Connect wire #8, #12 & #13 to L1.
NOMINAL AMPS PER LINE
3-PHASE 1-PHASE
2. Connect wire #9, #10 & #11 to L2.
3 PHASE, 4 WIRE
220/380 & 240/415 VAC. 3-PHASE, 4 WIRE
L1-N L2-N L3-N
kW PER LINE 10.8 5.4 5.4
NOMINAL AMPS PER LINE
L1 L2 L3 N
220/380 13.8 12.0 12.0 3.7 18.2
TOTAL
kW
1 & 3 PHASE
240/415 15.0 13.1 13.1 4.0 21.6
NOMINAL AMPS PER LINE
L1 L2 L3 N
TOTAL
kW
F45490 Rev. A (0315) Page 18 of 27
Page 19
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
FOR 3-PHASE, 4 WIRE:
1. Connect wire #9, #10 & #11 to neutral ("N").
2. Connect wire #12 to L1.
3. Connect wire #8 to L2.
4. Connect wire #13 to L3.
3-PHASE, 4 WIRE
60" WIRING DIAGRAM
60" WIRING DIAGRAM
Page 19 of 27 F45490 Rev. A (0315)
Page 20
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
Notes:
1. For supply connections, use copper wire sized in accordance with the national electrical code and suitable for
at least 90°C (194°F).
2. SERVICING ONLY
Each half of this griddle is wired separately and terminates in its own junction box. Each junction box requires
a separate fused branch circuit power supply as the griddle is not fused. Both power sources have to be
disconnected before servicing the device.
3. Lead marker numbers are the same as lead item numbers unless otherwise specified.
4. Wiring to be:
A. 10G,m 532515 - leads 1, 4, 8, 10, 12, 15 - 18, J, J2 and GRD.
B. 18GA., 532518 - leads 2 and 3.
60" SCHEMATIC
1 & 3 PHASE
208, 240, & 480 VAC, 1 & 3 PHASE
X-Y Y-Z X-Z TOTAL
kW PER LINE
LEFT 5.4 0 5.4 10.8
RIGHT 5.4 5.4 5.4 16.2
LEFT 45.0 22.5 22.5 51.9
208
RIGHT 45.0 45.0 45.0 77.9
LEFT 39.0 19.5 19.5 45.0
240
RIGHT 39.0 39.0 39.0 67.5
LEFT 19.5 9.7 9.7 22.5
480
RIGHT 19.5 19.5 19.5 33.8
FOR 3-PHASE:
1. Connect wire #18 to L1.
2. Connect wire #16 to L2.
3. Connect wire #15 to L3.
FOR 1-PHASE:
NOMINAL AMPS PER LINE
3-PHASE 1-PHASE
X Y Z -
LEFT JUNCTION BOX PHASE WIRING:
1. Connect wire #15 & #16 to L1.
2. Connect wire #18 to L2.
F45490 Rev. A (0315) Page 20 of 27
Page 21
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
FOR 3-PHASE:
1. Connect wire #8 & #10 to L1.
2. Connect wire #17 to L2.
3. Connect wire #12 to L3.
FOR 1-PHASE:
1. Connect wire #10 & #12 to L1.
2. Connect wire #8 & #17 to L2.
RIGHT JUNCTION BOX PHASE WIRING:
2 PHASE, 3 WIRE
kW PER LINE
220/380
240/415
1 & 3 PHASE
220/380 & 240/415 VAC. 2-PHASE, 3 WIRE
L1-N L2-N L3-N
LEFT 5.4 5.4 0.0
RIGHT 5.4 10.8 0.0
NOMINAL AMPS PER LINE
L1 L2 L3 N TOTAL kW
LEFT 5.2 5.2 0.0 3.4 9.1
RIGHT 6.9 6.9 0.0 4.6 13.6
LEFT 5.6 5.6 0.0 3.8 10.8
RIGHT 7.5 7.5 0.0 5.0 16.2
Page 21 of 27 F45490 Rev. A (0315)
Page 22
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
LEFT JUNCTION BOX PHASE WIRING
1. Connect wire #18 to neutral (N).
2. Connect wire #16 to L1.
3. Connect wire #15 to L2.
RIGHT JUNCTION BOX PHASE WIRING
1. Connect wire #8 & #10 to neutral (N).
2. Connect wire #12 to L1.
3. Connect wire #17 to L2.
2-PHASE, 3 WIRE
72" WIRING DIAGRAM
72" WIRING DIAGRAM
F45490 Rev. A (0315) Page 22 of 27
Page 23
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
Notes:
1. For supply connections, use copper wire sized in accordance with the national electrical code and suitable for
at least 90°C (194°F).
2. SERVICING ONLY
Each half of this griddle is wired separately and terminates in its own junction box. Each junction box requires
a separate fused branch circuit power supply as the griddle is not fused. Both power sources have to be
disconnected before servicing the device.
3. Lead marker numbers are the same as lead item numbers unless otherwise specified.
4. Wiring to be:
A. 10G,m 532515 - leads 1, 4, 8, 10, 11, 15 - 19, J, J2 and GRD.
B. 18GA., 532518 - leads 2 and 3.
72" SCHEMATIC
1 & 3 PHASE
208, 240, & 480 VAC, 1 & 3 PHASE
X-Y Y-Z X-Z TOTAL
kW PER LINE
LEFT 5.4 5.4 5.4 16.2
RIGHT 5.4 5.4 5.4 16.2
LEFT 45.0 45.0 45.0 77.9
208
RIGHT 45.0 45.0 45.0 77.9
LEFT 39.0 39.0 39.0 67.5
240
RIGHT 39.0 39.0 39.0 67.5
LEFT 19.5 19.5 19.5 33.8
480
RIGHT 19.5 19.5 19.5 33.8
FOR 3-PHASE:
1. Connect wire #16 & #11 to L1.
2. Connect wire #15 to L2.
3. Connect wire #18 to L3.
FOR 1-PHASE:
NOMINAL AMPS PER LINE
3-PHASE 1-PHASE
X Y Z -
LEFT JUNCTION BOX PHASE WIRING:
1. Connect wire #11 & #18 to L1.
2. Connect wire #16 & #15 to L2.
Page 23 of 27 F45490 Rev. A (0315)
Page 24
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
FOR 3-PHASE:
1. Connect wire #8 & #10 to L1.
2. Connect wire #17 to L2.
3. Connect wire #19 to L3.
FOR 1-PHASE:
1. Connect wire #10 & #19 to L1.
2. Connect wire #8 & #17 to L2.
RIGHT JUNCTION BOX PHASE WIRING:
1 & 3 PHASE
2 PHASE, 3 WIRE
220/380 & 240/415 VAC. 2-PHASE, 3 WIRE
L1-N L2-N L3-N
kW PER LINE
LEFT 6.9 6.9 0.0 4.6 13.6
220/380
RIGHT 6.9 6.9 0.0 4.6 13.6
LEFT 7.5 7.5 0.0 5.0 16.2
240/415
RIGHT 7.5 7.5 0.0 5.0 16.2
F45490 Rev. A (0315) Page 24 of 27
LEFT 5.4 10.8 0.0
RIGHT 5.4 10.8 0.0
NOMINAL AMPS PER LINE
L1 L2 L3 N TOTAL kW
Page 25
HEG / WEG / RRE Series Griddle - ELECTRICAL OPERATION
LEFT JUNCTION BOX PHASE WIRING
1. Connect wire #11 & #18 to neutral (N).
2. Connect wire #16 to L1.
3. Connect wire #15 to L2.
RIGHT JUNCTION BOX PHASE WIRING
1. Connect wire #19 & #10 to neutral (N).
2. Connect wire #8 to L1.
3. Connect wire #17 to L2.
2-PHASE, 3 WIRE
Page 25 of 27 F45490 Rev. A (0315)
Page 26
HEG / WEG / RRE Series Griddle - TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
Troubleshooting Guide
PROBLEM POSSIBLE CAUSES
1. Main power supply disconnected.
Heat does not come on when the temperature controller
is turned on.
Fat appears to smoke excessively.
Food sticks to griddle or burned around edges or contains
dark specs.
Food under-cooked inside.
Food tastes greasy or has objectionable off-flavor.
Noticeable build-up of gum on griddle.
2. Problem with thermostats. Refer to THERMOSTAT
REPLACEMENT.
3. Problem with heating elements. Refer to HEATING
ELEMENT REPLACEMENT.
1. Temperature set too high.
2. Moisture in food may be turning into steam.
1. Temperature set too high.
2. Griddle surface requires cleaning and/or seasoning.
3. Surface under food not covered with enough
cooking oil.
1. Temperature set too low.
2. Food not cooked for long enough time.
1. Food itself may have off-flavor.
2. Food stored improperly before cooking.
3. Too much griddle fat used.
4. Temperature set too low.
1. Temperature set too high.
2. Griddle surface needs cleaning and/or seasoning.
3. Too much griddle fat used.
1. No power to the machine. Circuit breaker tripped.
Griddle does not heat. (Indicator light does not glow).
Griddle does not heat. (Indicator light glows).
Hot and cold spots controlled by the same thermostat.
F45490 Rev. A (0315) Page 26 of 27
2. Thermostat inoperative. Refer to THERMOSTAT
Heating element(s) inoperative. Refer to HEATING
ELEMENT REPLACEMENT.
1. Uneven loading patterns.
2. Heating element(s) not clamped tight to griddle
3. Different voltage heating elements.
4. Heating elements inoperative. Refer to HEATING
5. Air drafts on griddle plate.
REPLACEMENT.
plate. Refer to HEATING ELEMENT
REPLACEMENT.
ELEMENT REPLACEMENT.
Page 27
HEG / WEG / RRE Series Griddle - TROUBLESHOOTING
Troubleshooting Guide
PROBLEM POSSIBLE CAUSES
Too hot in area controlled by the same thermostat.
Too cold in area controlled by the same thermostat.
1. Incorrect voltage supply.
2. Thermostat bulb not clamped tight to griddle plate.
Refer to CAPILLARY BULB INSTALLATION.
3. Thermostat not calibrated correctly. Refer to
THERMOSTAT CALIBRATION PROCEDURES.
1. Incorrect voltage supply.
2. Thermostat not calibrated correctly. Refer to
THERMOSTAT CALIBRATION PROCEDURES.
Page 27 of 27 F45490 Rev. A (0315)
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