Henny Penny 342 Guide

Model OFE/OFG/OEA/OGA-341, 342
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 425°F (218°C), 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 380°F (193°C)
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
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SECTION 2. MAINTENANCE

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.)
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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.
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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.
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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
morethan10°F 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 10°F 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.
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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
redincolor.
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.
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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
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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
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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.
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Model OFE/OFG/OEA/OGA-341, 342
2-12. VACUUM SWITCHThis 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
pilotflameoff.
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 disassemble
this component. It is set and sealed from the factory and is not
Figure 2-31 to be adjusted.
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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.
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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.
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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
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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

Model OFE/OFG/OEA/OGA-341, 342
2-16. BLOWER MOTOR
REPLACEMENT
(Continued)
8. Using 3/8 inch nut driver, remove nuts securing blower to the
unit. Figure 2-48. Pull blower from unit.
Figure 2-48 9. Install new blower in reverse order.
2-17. HEATING ELEMENTS
(ELECTRIC)
Heating elements are available for 208 and 230 voltage. Check
data plate to determine correct voltage.
Checkout If the shortening temperature recovery is very slow or at a slower
rate than required, this may indicate defective heating element(s).
An ohmmeter quickly indicates if the elements are shorted or open.
1. Remove electrical power supplied to the frypot to be checked
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 the frypot
to be worked on. Be aware the other control on 2-frypot
Figure 2-49 units will have power.
2. Remove rear cover. Figure 2-49.
3. Using a flat-head screwdriver, remove the appropriate wires
from the terminal blocks. Figure 2-50.
Figure 2-50
106 2-17

Model OFE/OFG/OEA/OGA-341, 342
2-17. HEATING ELEMENTS 4. Perform an ohm check on one element at a time, with wires
(ELECTRIC) disconnected. The 2 elements actually have 3 small heating
(Continued) elements inside the outer plate. It’s important to check
between the correct wires to obtain an accurate ohm reading.
The wires are labeled for your convenience. If the resistance
is not within tolerance, replace the element.
Wire Nos. Voltage Wattage Ohms (cold)
1L1 to 1L1 208 11000 11.7
1L2 to 1L2 208 11000 11.7
1L3 to 1L3 208 11000 11.7
1L1 to 1L1 240 11000 15.7
1L2 to 1L2 240 11000 15.7
1L3 to 1L3 240 11000 15.7
Replacement 1. Drain the shortening from the frypot
2. Remove the high limit bulb holder from the heating
element inside the frypot. See High Limit Temperature
Control-Electric Section.
3. Using a Phillip’s-head screwdriver, remove the screws
securing the element to the element hinges. Figure 2-51.
4. Pull element from fryer and replace with new element,
following steps in reverse order.
5. Connect the power cord to the wall receptacle or close wall
Figure 2-51 circuit breaker.
Heating elements should never be energized without
shortening in the frypot, or damage to the elements could
result.
6. Replace the shortening in the frypot, and unit is ready for
operation.
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Model OFE/OFG/OEA/OGA-341, 342
2-18. HEATING Each well of an electric fryer requires two switching contactors.
CONTACTORS The first in line is the primary contactor and the second in line is
(ELECTRIC) the heat contactor. When open, the primary contactor does not
allow power to flow to the heat contactor. When closed, the
primary supplies voltage to the heat contactor. When the heat
contactor is open, no voltage is supplied to the heating elements.
When the heat contactor closes, voltage is supplied to the heating
elements.
Checkout (Power Removed) 1. Remove electrical power supplied to frypot to be worked on.
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 the frypot
to be worked on. Be aware the other control on 2-frypot
Heat Contactor units will have power.
(Mercury)
2. Remove the control panel.
30 31 32
3. Perform a check on the contactor as follows:
Test Points Results
From 23 to 29 open circuit
From 24 to 28 open circuit
From 25 to 27 open circuit
From 30 to 34 open circuit
From 31 to 35 open circuit
From 32 to 36 open circuit
34 35 36 From 33 to 37 ohm reading 1700
Figure 2-52 From 22 to 26 ohm reading 415
Wires should be removed and labeled to obtain an accurate
check of contactors.
Figure 2-53
1003 2-19
33
37

Model OFE/OFG/OEA/OGA-341, 342
2-18. HEATING
CONTACTORS
(ELECTRIC)
(Continued)
To avoid electrical shock, make connections before
applying power, take reading, and remove power before
removing meter leads. The following checks are
performed with the wall circuit breaker closed and the
main power switch in the ON position.
1. Re-apply power to unit and turn power switch to ON.
2. Using illustrations from previous page, check voltage as
follows:
TestPoints
Results
Heat Contactor
From terminal 34 to 35 The voltage should read
From terminal 35 to 36 the same at each terminal
From terminal 34 to 36
TestPoints
Primary Contactor
From terminal 27 to 28 It should correspond to the
From terminal 28 to 29 voltage stated on the data
From terminal 27 to 29 plate.
Replacement If neither contactor is defective it must be replaced as follows:
(Heat Contactor)
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 the frypot
to be worked on. Be aware the other control on 2-frypot
units will have power.
1. Remove only the wires directly connected to the contactor
Figure 2-54 being replaced. Label the wires for replacement. Figure 2-54.
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