Henny Penny OFG-342 Operators Manual
Model OFE/OFG/OEA/OGA-341, 342
Henny Penny
High Volume Open Fryer
Model OFE/OFG-341
Model OFE/OFG-342
Model OEA/OGA-341
Model OEA/OGA-342
TECHNICAL MANUAL
Model OFE/OFG/OEA/OGA-341, 342
This manual should be retained in a convenient location for future reference.
A wiring diagram for this appliance is located on the inside of the right side panel.
Post in a prominent location, instructions to be followed in event user smells gas. This information shall
be obtained by consulting the local gas supplier.
Do not obstruct the flow of combustion and ventilation air. Adequate clearance must be left all around
appliance for sufficient air to the combustion chamber.
The Model OFG/OGA-34X open fryer is equipped with a continuous pilot. But the open fryer can not be
operated without electric power. The unit will automatically return to normal operation when power is
restored.
To avoid a fire, keep appliance area free and clear from combustibles.
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
injury or death. Read the installation, operating and maintenance instructions thoroughly before
installing or servicing this equipment.
FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
FM06-030
Revised 11-14-14
Model OFE/OFG/OEA/OGA-341, 342
TABLE OF CONTENTS
Section Page
Section 1. TROUBLESHOOTING ...................................................................................................1-1
1-1. Introduction .............................................................................................................1-1
1-2. Safety ......................................................................................................................1-1
1-3. Troubleshooting ......................................................................................................1-2
1-4. Error Codes .............................................................................................................1-4
Section 2. MAINTENANCE .............................................................................................................2-1
2-1. Introduction .............................................................................................................2-1
2-2. Maintenance Hints ..................................................................................................2-1
2-3. High Temperature Limit Control (Gas Units) .........................................................2-1
2-4. Complete Control Panel Replacement ...................................................................2-4
2-5. Power Switch ..........................................................................................................2-4
2-6. Temperature Probe Replacement (Gas) ..................................................................2-5
2-7. Temperature Probe Replacement (Electric) ............................................................2-6
2-8. Flame Sensor/Pilot/Ignitor Assembly (Gas) ...........................................................2-7
2-9. Ignition Module.......................................................................................................2-9
2-10. Transformer Replacement .......................................................................................2-10
2-11. Control & I/O Boards Replacement ........................................................................2-10
2-12. Vacuum Switch Replacement .................................................................................2-11
2-13. Drain Microswitch Replacement ............................................................................2-12
2-14. Filter Switch Replacement ......................................................................................2-12
2-15. Gas Control Valve Replacement .............................................................................2-13
2-16. Blower Motor Replacement ....................................................................................2-15
2-17. Heating Elements (Electric) ....................................................................................2-17
2-18. Heating Contactors (Electric) ..................................................................................2-19
2-19. Speaker Assembly ...................................................................................................2-22
2-20. High Temperature Limit Control (Electric) ............................................................2-23
2-21. Filter Pump and Motor Removal ............................................................................2-26
2-22. Autolift Transformer Replacement (if applicable) ..................................................2-27
2-23. Autolift PC Board Replacement (if applicable) ......................................................2-28
2-24. Autolift Actuator (Motor) Replacement (if applicable) ..........................................2-28
Wiring Diagrams
Section 3. PARTS INFORMATION .................................................................................................3-1
3-1. Introduction .............................................................................................................3-1
3-2. Genuine Parts ..........................................................................................................3-1
3-3. When Ordering Parts ...............................................................................................3-1
3-4. Prices .......................................................................................................................3-1
3-5. Delivery ...................................................................................................................3-1
3-6. Warranty ..................................................................................................................3-1
3-7. Recommended Spare Parts for Distributors ............................................................3-1
ii 106
Model OFE/OFG/OEA/OGA-341, 342
SECTION 1. TROUBLESHOOTING
DANGER INDICATES AN IMMINENTLY
HAZARDOUS SITUATION WHICH, IF NOT
AVOIDED, WILL RESULT IN DEATH OR
SERIOUS INJURY.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
CAUTION used with the safety alert symbol indicates a
potentially hazardous situation which, if not avoided,
could result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.
NOTICE is used to highlight especially important
information.
SAFETY ALERT SYMBOL is used with DANGER,
WARNING or CAUTION which indicates a personal
injury type hazard.
1-1. INTRODUCTION This section provides troubleshooting information in the form of
an easy to read table.
If a problem occurs during the first operation of a new fryer,
recheck the Installation Section of the Operator’s Manual.
Before troubleshooting, always recheck the Operation Section of
the Operator’s Manual.
1-2. SAFETY Where information is of particular importance or is safety related,
the words DANGER, WARNING, CAUTION, or NOTE are used.
Their usage is described on the next page:
1003 1-1
Model OFE/OFG/OEA/OGA-341, 342
1-3. TROUBLESHOOTING To isolate a malfunction, proceed as follows:
1. Clearly define the problem or symptom and when it
occurs.
2. Locate the problem in the Troubleshooting table.
3. Review all possible causes, then one at a time work
through the list of corrections until the problem is solved.
If maintenance procedures are not followed correctly,
injuries and/or property damage could result.
PROBLEM CAUSE CORRECTION
With the switch in Open circuit Check to see if unit is plugged in
the ON position,
fryer is completely Check breaker or fuse at supply box
inoperative
Check power switch per Power Switch
Section; replace if defective
Check voltage at wall receptacle
Check cord and plug
Shortening will not Faulty contactor Check contactor per Heating Contactors
heat but lights are on (elec. model) Section
Faulty gas control Check gas control valve per Gas Control
valve (gas model) Valve Assembly Section
Faulty temperature Check temperature probe per Temperature
probe Probe Replacement Section; “E6”
Faulty high limit Check high limit per the appropriate High
Temperature Limit Control Section; “E10”
Faulty drain switch Check drain switch per Drain Microswitch
Section; “E15"
1-2 1003
Model OFE/OFG/OEA/OGA-341, 342
1-3. TROUBLESHOOTING(Continued)
PROBLEM CAUSE CORRECTION
Heating of Low or improper Use a meter and check the receptacle
shortening too voltage (elec. unit) voltage against the data plate
slow
Weak or burnt out Check heating elements per Heating
elements (elec. unit) Elements Section
Wire(s) loose Tighten
Burnt or charred Replace wire and clean connectors
wire connection
Faulty contactor Check contactor per Heating Contactors
Section
Supply line too small Increase supply line size; refer to
- low gas volume (gas Installation Section of Operator’s Manual
unit)
Improper ventilation Refer to Installation Section of Operator’s
Manual
Shortening Temperature probe Calibrate temperature probe if 10 off;
overheating needs calibrated if more than 10 off, replace temperature
probe
Mercury contactor Check mercury contactor for not opening;
stuck closed replace if necessary (elec. unit)
Bad control board Replace control board if heat indicator stays
on past ready temperature
Foaming or boiling Water in shortening At end of cook cycle, drain shortening and
over of shortening clean
Improper or bad Use recommended shortening
shortening
Improper filtering Refer to the Filtering the Shortening
Section in Operator’s Manual
Improper rinsing after Clean and rinse the frypot; then dry
cleaning the fryer thoroughly
1003 1-3
Model OFE/OFG/OEA/OGA-341, 342
1-2. TROUBLESHOOTING
(Continued)
PROBLEM CAUSE CORRECTION
Shortening will not Drain valve clogged Open valve, force cleaning brush through
drain from frypot with crumbs drain
Drain valve will not Replace cotter pins in valve coupling
open by turning
handle
Filter motor runs Pump clogged Remove pump cover and clean
but pumps shortening
slowly Filter line connection Tighten all filter line connections
loose
Solidified shortening Clear all filter lines of solidified shortening
in lines
Filter switch on, Defective switch Check/replace switch per Filter Switch
motor does not run Section
Defective motor Check/replace motor
Motor thermal Reset thermal switch on filter motor
protector tripped
Motor hums but Clogged lines or Remove and clean pump and lines
will not pump pump
Replace pump seal, rotor and rollers
1-4 1003
Model OFE/OFG/OEA/OGA-341, 342
1-4. ERROR CODES In the event of a control system failure, the digital display shows
An error message. These messages are coded: “E4”, “E5”, “E6”,
“E10”, “E15”, “E20”, “E31”, “E41”, “E46”, and “E92”. A
Constant tone is heard when an error code is displayed, and to
silence this tone, press any button.
DISPLAY CAUSE PANEL BOARD CORRECTION
“E4” Control board Turn switch to OFF position, then turn switch back to ON;
overheating if display shows “E4”, the control board is getting too hot;
check the louvers on each side of the unit for obstructions
“E5” Shortening Turn switch to OFF position, then turn switch back to ON;
overheating if display shows “E5”, the heating circuits and temperature
probe should be checked
“E6-A” Temperature Turn switch to OFF position, then turn switch back to ON;
probe open if display shows “E6” the temperature probe should be
checked
“E6-B” Temperature Turn switch to OFF position, then turn switch back to ON;
probe shorted if display shows “E6” the temperature probe should be
checked to replace, per Temperature Probe Replacement
Section
“E10” High limit Reset the high limit by manually pushing up on the red
reset button; if high limit does not reset, high limit must be
replaced per High Limit Temperature Control Section
“E15” Drain switch Close drain, using the drain valve handle; if display still
failure shows “E-15”, check the drain microswitch per Drain
Microswitch Section
“E31” Elements not Check to make sure the elements are hinged all way down
hinged all the into the frypot; check for obstructions under elements
way down
“E41”, Programming Turn switch to OFF, then back to ON; if display shows any
“E46” failure of the error codes, try to reinitialize the control (Special
Program Mode Section of Operator’s Manual); if error
code persists, replace the control panel per Complete
Control Panel Replacement Section
1003 1-5
Model OFE/OFG/OEA/OGA-341, 342
1-4. ERROR CODES
(Continued)
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-20 A” Vacuum Press the timer button to try the ignition process again,
switch failure and if “E-20 A” persists, check the air switch per Vacuum
(stuck closed) Switch Section
“E-20 B” Draft fan or Press the timer button to try the ignition process again,
vacuum and if “E-20 B” persists, check the vacuum switch per
switch failure Vacuum Switch Section or the blower motor per Blower
(stuck open) Motor Assembly Section
“E-20 C” Ignition modules Press the timer button to try the ignition process again; if
not responding “E-20 C” persists, check the ignition module per Ignitor
Module Section, the spark ignitor per Pilot/Ignitor
Assembly Section, or the I/O board per Control & I/O
Boards Section
“E-20 D” Pilots not lit or Press the timer button to try the ignition process again; if
no flame sense “E-20 D” persists, check the ignition module per Ignition
Module Section, the I/O board per Control & I/O Boards
Section, or the flame sensor per Flame Sensor Section
“E-47” Analog converter Turn switch to OFF, then back to ON; if “E47” persists,
chip or 12 volt replace the I/O board, or the PC board; if speaker
supply failure tones are quiet, probably I/O board failure
“E-48” Input system Replace PC board
error
“E-70” Faulty power Check power switch, along with its wiring;
switch or switch replace I/O board if necessary
wiring; faulty I/O
board
“E-92” 24 VAC fuse Check for shorted component in 24 volt circuit;
on I/O open (i.e., high limit, drain switch, vacuum switch)
1-6 1003
Model OFE/OFG/OEA/OGA-341, 342
SECTION 2. MAINTENANCE
2-1. INTRODUCTION This section provides procedures for the check out and
replacement of the various parts used within the fryer. Before
replacing any parts refer to the Troubleshooting Section. It will aid
you in determining the cause of the malfunction.
2-2. MAINTENANCE HINTS 1. You may need to use a multimeter to check the electric
components.
2. When the manual refers to the circuit being closed, the
multimeter should read zero unless otherwise noted.
3. When the manual refers to the circuit being open, the
multimeter will read infinity.
2-3. HIGH TEMPERATURE
LIMIT CONTROL This high temperature control is a safety, manual reset control,
(Gas Units) which senses the temperature of the shortening. If the short ening temperature exceeds 425F (218C), this switch opens
and shuts off heat to the frypot. When the temperature of the
shortening drops to a safe operation limit, the control must be
manually reset by pressing the red reset button. The red reset
button is located under the control panel, in the front of the fryer.
(Figure 2-1). This allows heat to be supplied to the frypot.
Before replacing a high temperature limit control, check to see
that its circuit is closed.
Figure 2-1
The shortening temperature must be below 380F (193C)
to accurately perform this check.
Checkout
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
1. Remove the control panel. Figure 2-2.
Figure 2-2
1003 2-1
Model OFE/OFG/OEA/OGA-341, 342
1-3. HIGH TEMPERATURE 2. Using a Phillip’s head screwdriver, remove the screws securing
LIMIT CONTROL the inner heat shield and remove from unit. Figure 2-3.
(Gas Units) (Continued)
Figure 2-3 3. Remove the screw securing the high limit bracket to the frame
and remove the high limit and bracket from unit. Figure 2-4.
Figure 2-4 4. Remove the two screws securing the high limit to the bracket
and remove the high limit from bracket.
5. Remove the two electrical wires from the high temperature
limit control. Figure 2-5.
Figure 2-5
6. Manually reset the control, then check for continuity between
the two terminals after resetting the control. If the circuit is
open, replace the control, then continue with this procedure.
(If the circuit is closed, the high limit is not defective. Re connect the two electrical wires.)
2-2 1003
Model OFE/OFG/OEA/OGA-341, 342
2-3. HIGH TEMPERATURE
LIMIT CONTROL
(Gas Units) (Continued)
Replacement To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
1. If the tube is broken or cracked, the control opens, shutting
off electrical power to the heat circuit. The control cannot be
reset, and it continuously clicks when pushed.
2. Drain the shortening from the frypot and discard. A substance
from the tube could contaminate the shortening.
Figure 2-6 3. Remove the control panel.
4. Using a 5/16” wrench, loosen small inside screw nut on
capillary tube. Figure 2-6.
5. Using a 11/16” crows-foot, remove the larger nut securing the
capillary tube to the pot. Figure 2-7.
6. Remove the two screws securing the high limit guard and
Figure 2-7 remove guard. Figure 2-8
7. Straighten the capillary tube inside the frypot, and pull the
capillary tube through the frypot, from behind the control
panel. Remove the defective high limit from the control panel
area.
8. Replace new high limit in reverse order.
Figure 2-8
To avoid electrical shock or other injury, run the
capillary line under and away from all electrical power
wires and terminals. The tube must never be in such a
position where it could accidentally touch the electrical
power terminals.
1003 2-3
Model OFE/OFG/OEA/OGA-341, 342
2-4. COMPLETE CONTROL Should the control board become inoperative, follow these
PANEL REPLACEMENT instructions for replacing the board.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove the two screws securing the control panel and lift out.
Figure 2-9 Figure 2-9.
3. Unplug the wire connectors going to the control panel.
Figure 2-10.
4. Remove transformer(s) from control panel. They must be
installed on the replacement panels.
5. Install new control panel in reverse order.
When plugging connectors onto new control panel, be sure the
connectors are inserted onto all of the pins, and that the
connectors are not forced onto the pins backwards. If not
Figure 2-10 connected properly, damage to the board could result.
2-5. POWER SWITCH 1. Remove electrical power supplied to fryer.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove control panel.
3. Label and remove wires from the switch. With test instrument
Figure 2-11 check across the terminals of the switch with switch in the on
position, and the circuit should be closed. In the off position,
the circuit should be open. If the switch checks defective,
replace by continuing with this procedure. Figure 2-11.
2-4 504
Model OFE/OFG/OEA/OGA-341, 342
2-5. POWER SWITCH (Continued)
4. With control panel removed, and the wires off the switch, push
in on tabs on the switch to remove from panel. Figure 2-12.
5. Replace with new switch, and reconnect wires to switch.
6. Replace the control panel.
Figure 2-12
2-6. TEMPERATURE PROBE The temperature probe relays the actual shortening temperature
REPLACEMENT (Gas) to the control board. If it becomes disabled, “E06” shows in the
display. Also, if the shortening temperature is out of calibration
more than 10F or C, the probe should be replaced. An Ohm check
can be performed also. See chart below.
1. Remove electrical power supplied to the fryer.
Figure 2-13
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Drain the shortening from the frypot.
3. Remove the control panel and heat shield from control area.
Figure 2-13.
4. Using a ½ inch wrench, remove the nut on the compression
Figure 2-14 fitting. Figure 2-14.
806 2-5
Model OFE/OFG/OEA/OGA-341, 342
2-6. TEMPERATURE PROBE 5. Remove the probe from the frypot, and disconnect wire
REPLACEMENT (GAS) connector from the control panel. Figure 2-15.
(Continued)
6. Place the nut and new ferrule on the new probe and insert the
probe into the compression fitting until it extends one (1) inch
(2.54cm) into the frypot. Figure 2-16.
7. Tighten hand tight and then a half turn with wrench.
Figure 2-15
Excess force will damage probe.
8. Connect new probe to PC board and replace control panel.
9. Replace shortening, and turn power on to check out fryer.
Figure 2-16
2-7. TEMPERATURE PROBE The temperature probe relays the actual shortening temperature
REPLACEMENT (Gas) to the control board. If it becomes disabled, “E06” shows in the
REPLACEMENT display. Also, if the shortening temperature is out of calibration
(ELECTRIC) more than 10F or C, the probe should be replaced. An Ohm check
can also be performed. See chart on page 2-5.
1. Remove electrical power supplied to the fryer.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Drain the shortening from the frypot.
Figure 2-17 3. Remove screws securing rear cover of fryer, and remove rear
cover. Figure 2-17.
2-6 1209
Model OFE/OFG/OEA/OGA-341, 342
2-7. TEMPERATURE PROBE 4. Using a ½ inch wrench, remove the nut on the compression
REPLACEMENT fitting. Figure 2-18.
(ELECTRIC) (Continued)
5. Remove the probe from the frypot, and disconnect probe.
6. Place the nut and new ferrule on the new probe and insert the
probe into the compression fitting until it extends one (1) inch
(2.54cm) into the frypot.
7. Reconnect new probe onto wires, replace rear cover, and fryer
Figure 2-18 is now ready for use.
2-8. FLAME SENSOR/ The Henny Penny open fryer (gas) has electronic spark ignition
PILOT / IGNITOR that lights a standing pilot. The gap between the spark electrode
ASSEMBLY (GAS) and the pilot hood should be1/8 of an inch (3.18 mm). The
flame sensor recognizes the pilot flame and allows gas to continue
to the pilot. The flame sensor must send a minimum of two (2)
micro amps to the ignition module. The pilot flame should be split
in two by the flame sensor, causing the flame sensor to be bright
red in color.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
TO AVOID PERSONAL INJURY OR PROPERTY
DAMAGE, BEFORE STARTING THIS
PROCEDURE, MOVE THE MAIN POWER SWITCH
TO THE OFF POSITION. DISCONNECT THE MAIN
CIRCUIT BREAKERS AT THE CIRCUIT BREAKER
BOX OR UNPLUG SERVICE CORD FROM WALL
RECEPTACLE. TURN OFF THE MAIN GAS
SUPPLY TO THE FRYER AND DISCONNECT AND
CAP THE MAIN SUPPLY LINE TO FRYER, OR
POSSIBLE EXPLOSION COULD RESULT.
1003 2-7
Model OFE/OFG/OEA/OGA-341, 342
2-8. FLAME SENSOR/
PILOT / IGNITOR
ASSEMBLY (Gas)
(Continued)
2. Remove the control panel and heat shield from control area.
Figure 2-19.
Figure 2-19
3. Disconnect the flame sense wire from ignition module.
Figure 2-20.
Figure 2-20
4. Using a 7/16” wrench, loosen the nut on the pilot tube and pull
tube from assembly. Figure 2-21.
Figure 2-21
5. Remove the two screws securing the assembly and pull
assembly from unit. Figure 2-22.
6. Now the flame sensor or or pilot assembly can be removed
from bracket.
Figure 2-22
2-8 1003
Model OFE/OFG/OEA/OGA-341, 342
2-9. IGNITION MODULE During normal operation, the ignition modules send 24 volts to the
ignitors and gas valve. If a module does not sense a pilot flame,
the module starts the ignition process again. But, if a pilot light
goes out for longer that 10 seconds, or it goes out 3 times within 10
seconds, the module keeps the 24 volts from reaching the gas
valve. The burners shut down.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
Figure 2-23 2. Remove the control panel and heat shield from control area.
Figure 2-23.
3. Using a 3/8 inch socket, remove the two nuts securing the
module. Figure 2-24.
Figure 2-24
4. Label and remove the wires at module. Figure 2-25.
5. Install new module in reverse order.
Figure 2-25
1003 2-9
Model OFE/OFG/OEA/OGA-341, 342
2-10. TRANSFORMER The transformer reduces voltage down (to 24V) to accommodate
REPLACEMENT those components with low voltage.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove the control panel
Figure 2-26
3. Remove the two wire connectors to disconnect transformer
From panel. Figure 2-26.
4. Using a 3/8” nut-driver, remove the two nuts securing the
transformer to the panel and remove transformer. Figure 2-27.
5. Install the new transformer in reverse order.
Figure 2-27
2-11. CONTROL & I/O 1. Remove electrical power supplied to the unit.
BOARDS
REPLACEMENT
I/O Power Supply Control
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove the control.
3. Using a 5/16” nut-driver or wrench, remove the 4 nuts securing
the PC shield and remove shield. Figure 2-28.
4. Disconnect the wire assemblies from the appropriate board.
Figure 2-28
5. Using a 5/16” nut-driver or wrench, remove the 4 nuts securing
the appropriate board to the shroud.
6. Install the new board in reverse order.
2-10 1003
Model OFE/OFG/OEA/OGA-341, 342
2-12. VACUUM SWITCH This switch senses the airflow from the induction blower. If
REPLACEMENT the airflow is reduced below a set amount, the switch opens and
the I/O board cuts power to the gas control valve, which shuts the
pilot flame off.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
Figure 2-29 breaker, or unplug cord at wall receptacle.
2. Remove the control panel.
3. Remove the 2 screws securing the switch to the heat shield.
Figure 2-29.
4. Remove the air hose from the air switch. Figure 2-30.
Figure 2-30
5. Label and remove wires from air switch. Figure 2-31.
6. Install new vacuum switch in reverse order.
To avoid property damage, do not tamper with, or disas semble
this component. It is set and sealed from the factory and is not
Figure 2-31 to be adjusted.
1003 2-11
Model OFE/OFG/OEA/OGA-341, 342
2-13. DRAIN MICROSWITCH Upon turning the drain handle, the drain microswitch should
REPLACEMENT “open”, cutting off the pilot flame. This will prevent the fryer
from heating while shortening is being drained from the frypot.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. The following check should be made to determine if the drain
microswitch is defective.
a. Remove the two screws and nuts securing the microswitch
Figure 2-32 to the drain rod valve bracket, and remove microswitch.
Figure 2-32.
b. Remove wires from the switch. Figure 2-33.
c. Check for continuity across the two outside terminals of the
drain switch. If the circuit is open, the drain switch is
defective. The circuit opens by pressing on the actuator of
the microswitch.
3. If defective, replace switch in reverse order.
Figure 2-33
2-14. FILTER SWITCH
REPLACEMENT 1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Open the door (left door on 2 well units), and remove the 2
Figure 2-34 screws securing the switch box cover. Figure 2-34.
2-12 1003
Model OFE/OFG/OEA/OGA-341, 342
2-14. FILTER SWITCH 3. Label and remove the wires from the switch. With test
REPLACEMENT instrument check across the terminals of the switch. With the
(Continued) switch in the on position, the circuit should be closed. With the
switch in the off position, the circuit should be open. If the
switch is defective, replace by continuing with this
procedure. Figure 2-35.
Figure 2-35
4. With wires removed from the switch, push in on tabs on the
switch and remove switch from front of switch box cover.
Figure 2-36.
5. Push new switch into panel and reconnect wires.
Figure 2-36
2-15. GAS CONTROL VALVE The gas valve assembly controls the flow of gas to the pilot and the
REPLACEMENT main burner. The valve has two 24-volt coils, which are regulated
by the P and M terminals on the valve. The C terminal is the
common terminal. For gas flow to the pilot, 24 VAC must be
present between the P and C terminals. For gas flow to the main
burner, 24 VAC must be present between the M and C terminals.
TO AVOID PERSONAL INJURY OR PROPERTY
DAMAGE, BEFORE STARTING THIS
PROCEDURE, MOVE THE MAIN POWER SWITCH
TO THE OFF POSITION. DISCONNECT THE MAIN
CIRCUIT BREAKERS AT THE CIRCUIT BREAKER
BOX OR UNPLUG SERVICE CORD FROM WALL
RECEPTACLE. TURN OFF THE MAIN GAS
SUPPLY TO THE FRYER AND DISCONNECT AND
CAP THE MAIN SUPPLY LINE TO FRYER, OR
POSSIBLE EXPLOSION COULD RESULT.
1003 2-13
Model OFE/OFG/OEA/OGA-341, 342
2-15. GAS CONTROL VALVE
REPLACEMENT
(Continued)
1. Remove right side panel. Figure 2-37.
Figure 2-37
2. Label and remove wires from gas valve. Figure 2-38
Figure 2-38
3. Using a 7/16 wrench, remove the pilot line from the gas valve.
Figure 2-39.
Figure 2-39
4. Using a 1-inch wrench, loosen the nut securing the main gas
inlet line to the gas valve. Figure 2-40.
Figure 2-40
2-14 1003
Model OFE/OFG/OEA/OGA-341, 342
2-15. GAS CONTROL VALVE
REPLACEMENT
(Continued)
5. Using a pipe wrench, loosen the outlet fitting to the burner.
Figure 2-41.
Figure 2-41
6. Using a Phillips screwdriver, remove the 2 screws securing
the gas valve to the bracket and remove gas valve from unit.
Figure 2-42.
7. Remove the fittings from the gas valve and install in new gas
valve.
Figure 2-42
8. Install the new gas valve in reverse order.
2-16. BLOWER MOTOR The blower motor assembly induces the draft for the burners. If the
REPLACEMENT blower motor fails, the air switch will fail to close, causing an
“E-20B” error code in the display.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove screws securing the rear cover to the unit.
Figure 2-43 Figure 2-43.
106 2-15
Model OFE/OFG/OEA/OGA-341, 342
2-16. BLOWER MOTOR
REPLACEMENT
(Continued)
3. Remove the wire cover from the blower motor housing.
Figure 2-44.
Figure 2-44
4. Remove wire nuts connecting blower motor wires to wires in
conduit. Figure 2-45.
Figure 2-45
5. Loosen conduit from blower motor. Figure 2-46.
Figure 2-46
7. Remove screws connecting flue to blower. Figure 2-47.
Figure 2-47
2-16 1003
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