Henny Penny OFE-341, OFE-342, OEA-341, OEA-342, OFG-341 User Manual

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

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 12-30-09

	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
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:
		SAFETY ALERT SYMBOL is used with DANGER,
		WARNING or CAUTION which indicates a personal
		injury type hazard.
		NOTICE is used to highlight especially important
		information.
		CAUTION used without the safety alert symbol indicates a
		potentially hazardous situation which, if not avoided, may
		result in property damage.
		CAUTION used with the safety alert symbol indicates a
		potentially hazardous situation which, if not avoided,
		could result in minor or moderate injury.
		WARNING indicates a potentially hazardous situation
		which, if not avoided, could result in death or serious
		injury.

DANGER INDICATES AN IMMINENTLY

HAZARDOUS SITUATION WHICH, IF NOT

AVOIDED, WILL RESULT IN DEATH OR

SERIOUS INJURY.

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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,		• Check breaker or fuse at supply box
	fryer is completely
	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
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			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	• Filter line connection	• Tighten all filter line connections
	slowly
		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

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				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

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				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

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			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 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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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. Reconnect the two electrical wires.)

2-2

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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.
Figure 2-7	6.	Remove the two screws securing the high limit guard and
		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.
Figure 2-9	2.	Remove the two screws securing the control panel and lift out.
		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
Figure 2-10		connectors are not forced onto the pins backwards. If not
		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.
Figure 2-11	3.	Label and remove wires from the switch. With test instrument
		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 10°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 REPLACEMENT (GAS) (Continued)

Figure 2-15

Figure 2-16

5.Remove the probe from the frypot, and disconnect wire connector from the control panel. Figure 2-15.

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.

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.

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.
2-6		1209

Model OFE/OFG/OEA/OGA-341, 342

2-7. TEMPERATURE PROBE REPLACEMENT (ELECTRIC) (Continued)

Figure 2-18

2-8. FLAME SENSOR/ PILOT / IGNITOR ASSEMBLY (GAS)

4.Using a ½ inch wrench, remove the nut on the compression fitting. Figure 2-18.

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 is now ready for use.

The Henny Penny open fryer (gas) has electronic spark ignition that lights a standing pilot. The gap between the spark electrode 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.

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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

2-8

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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.
Figure 2-26		2.	Remove the control panel
		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.
Figure 2-27		5.	Install the new transformer in reverse order.
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.
Figure 2-28		4.	Disconnect the wire assemblies from the appropriate board.
		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 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 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 disassemble
Figure 2-31	this component. It is set and sealed from the factory and is not
	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.

Figure 2-34	2. Open the door (left door on 2 well units), and remove the 2
	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