Henny Penny PFG-690 Service Manual
Henny Penny
Pressure Fryer
Model PFG-690
TECHNICAL MANUAL
Model 690
This manual should be retained in a convenient location for future reference.
A wiring diagram for this appliance is located on the rear shroud cover of the control panel.
Post in a prominent location, instructions to be followed if user smells gas. This information
should be obtained by consulting the local gas supplier.
Do not obstruct the ow of combustion and ventilation air. Adequate clearance must be left all
around appliance for sufcient air to the combustion chamber.
The Model PFG-690 pressure fryer is equipped with a continuous pilot. But fryer cannot be
operated without electric power. Fryer will automatically return to normal operation when
power is restored.
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.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. FIRE OR
EXPLOSION COULD RESULT.
FM06-006
Revised 12-01-2016
Model 690
HENNY PENNY
8 HEAD GAS PRESSURE FRYER
SPECIFICATIONS
Height 61” (155 cm)
Width 24” (61 cm)
Depth 41¾” ( 106 cm)
Floor Space Approximately 7 sq. ft. (0.65 sq. m.)
Pot Capacity 8 Head of chicken (32 lbs.) (14.4 kg.)
130 lbs. shortening (59 kg.)
Electrical 120 VAC, 1 Phase, 50/60 Hz, 10 Amp, 3 Wire Service
240 VAC, 1 Phase, 50/60 Hz, 5 Amp, 3 Wire Service
Heating Propane or Natural Gas; 100,000 Btu/hr (105.51 MJ/hr)
Pressure 12 psi operating pressure (827 mbar)
14.5 psi safety relief pressure (999 mbar)
Shipping Weight Approximately 935 lbs. (424 kg.)
A data plate, located on the back shroud behind the lid, gives the information of the type
of fryer, serial number, warranty date, and other information pertaining to fryer. Also, the
serial number is stamped on the outside of the frypot. See gure below.
i
Model 690
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 .................................................................................................... 1-11
Section 2. MAINTENANCE ........................................................................................................ 2-1
2-1. Introduction .................................................................................................... 2-1
2-2. Maintenance Hints .......................................................................................... 2-1
2-3. Preventive Maintenance ................................................................................. 2-1
2-4. High Temperature Limit Control .................................................................... 2-2
2-5. Power/Pump Switch ....................................................................................... 2-4
2-6. Temperature Probe Replacement .................................................................... 2-5
2-7. Complete Control Panel - Henny Penny ........................................................ 2-6
2-8. Pressure Regulation ........................................................................................ 2-7
2-9. Tilting the Lid Upright ................................................................................... 2-7
2-10. Reversing the Lid Gasket ............................................................................... 2-8
2-11. Lid Counterweight Cables .............................................................................. 2-9
2-12. Pressure Pad ................................................................................................... 2-10
2-13. Lid Adjustment ............................................................................................... 2-11
2-14. Clean the Nylatrons ........................................................................................ 2-11
2-15. Solenoid Valve ................................................................................................ 2-12
2-16. Deadweight Valve ........................................................................................... 2-14
2-17. Removal & Cleaning of Safety Relief Valve .................................................. 2-15
2-18. Pressure Gauge ............................................................................................... 2-16
2-19. Gas Control Valve .......................................................................................... 2-17
2-20. Blower Assembly ........................................................................................... 2-19
2-21. Transformer .................................................................................................... 2-20
2-22. Airow Switch ............................................................................................... 2-21
2-23. Drain Microswitch .......................................................................................... 2-22
2-24. Drain Valve and Extension ............................................................................. 2-23
2-25. Air Valve......................................................................................................... 2-24
2-26. Cleaning the Dilution Box .............................................................................. 2-25
2-27. Cleaning the Blower Wheel ........................................................................... 2-25
2-28. Ignition Modules ............................................................................................ 2-26
2-29. Ignitor Assembly ............................................................................................ 2-27
2-30. Flame Sensor Assembly ................................................................................. 2-28
2-31. Ignitor and Flame Sensor Adjustment ............................................................ 2-28
2-32. Nylatron Strips Replacement ......................................................................... 2-29
2-33. Lubricating Lid Rollers .................................................................................. 2-30
120 Volt Wiring Diagram (AP0803002 & BELOW) ..................................... 2-31
120 Volt Wiring Diagram (AP0803003 & ABOVE) ...................................... 2-32
220-240 Volt Wiring Diagram (AP0803002 & BELOW) .............................. 2-33
220-240 Volt Wiring Diagram (AP0803003 & ABOVE)............................... 2-34
230 Volt Wiring Diagram (AP0803002 & BELOW) ..................................... 2-35
230 Volt Wiring Diagram (AP0803003 & ABOVE) ...................................... 2-36
ii
Model 690
TABLE OF CONTENTS (Continued)
Section Page
Section 2 MAINTENANCE (Continued)
230 Volt Ladder Diagram (AP0803002 & BELOW) ..................................... 2-37
230 Volt Ladder Diagram (AP0803003 & ABOVE) ...................................... 2-38
100-120 Volt FAST Wiring Diagram (AP0803002 & BELOW) ................... 2-39
100-120 Volt FAST Wiring Diagram (AP0803003 & ABOVE) .................... 2-40
230 Volt FAST Wiring Diagram (AP0803002 & BELOW) ........................... 2-41
230 Volt FAST Wiring Diagram (AP0803003 & ABOVE) ........................... 2-42
220-240 Volt FAST Wiring Diagram (AP0803002 & BELOW) ................... 2-43
220-240 Volt FAST Wiring Diagram (AP0803003 & ABOVE) .................... 2-44
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 ................................................... 3-2
Section 4. PROGRAMMING ....................................................................................................... 4-1
iii
Model 690
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 rst operation of a new fryer,
recheck the installation per the Installation section of the
Operator’s Manual.
Before troubleshooting, always recheck the operation pro-
cedures per section 3 of the Operator’s Manual.
1-2. SAFETY
Where information is of particular importance or safety
related, the words DANGER, WARNING, CAUTION, and
NOTICE are used. Their usage is described below.
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 indicates a potentially hazardous situation
which, if not avoided, may 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.
Jan. 2003
1-1
Model 690
1-3. TROUBLESHOOTING To isolate a malfunction, proceed as follows:
1. Clearly dene 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.
4. Refer to the maintenance procedures in the Maintenance
section to safely and properly make the checkout and re-
pair needed.
If maintenance procedures are not followed correctly,
injuries and/or property damage could result.
Jan. 2003
1-2
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
COOKING SECTION
Product Color Not Correct:
A. Too Dark • Temperature too high • Check temperature setting
in the program mode; see
Programming section of
Operator’s Manual
• Faulty temperature probe • Remove and replace tempera-
ture probe
• Shortening too old • Change shortening
• Shortening too dark • Filter shortening
• Change shortening
• Breading product too far • Bread product closer to
in advance actual frying period
B. Too Light
ture probe
pressure checked going to
burners
pushed amount of product to be cooked
C. Product
Greasy
when product was dropped
in frypot
• Temperature too low • Check temperature setting
• Remove and replace tempera-
• Fryer incorrect preheat • Allow proper preheat time
• Slow fryer heat-up/recovery • Low gas pressure; have gas
• Wrong cook button • Be sure to select the correct
• Shortening old • Replace shortening
• Temperature too low • Check temperature setting
• Temperature not recovered
temperature probe
frypot immediately after frypot immediately after
depressurization depressurization
Oct. 2002
• Faulty temperature probe • Remove and replace defective
• Frypot overloaded • Reduce cooking load
• Product not removed from •Remove product from
1-3
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
COOKING SECTION (Continued)
D. Spotted • Improper separation of the • Load product into basket
Product product properly
the product
breading
• Breading not uniform on • Sift breading regularly
• Separate product during
on product frequently
pressure cooking
E. Dryness of
Product cooking
temperature
check for pressure leaks
correct amount of
product to be cooked
Product Flavor (Taste):
A. Salty Taste
breading the desired product
B. Burned Taste
C. Bland Taste
• Breading mixture incorrect • Use breading designed for
for product (spice content desired product
too low)
• Burned breading particles • Filter the shortening more
• Product sticking together • Separate product prior to
• Moisture loss prior to • Use fresh products
• Overcooking the product • Reduce cooking time
• Reduce cooking
• Low operating pressure • Check pressure gauge reading,
• Wrong cook button pushed • Be sure to select the
• Breading mixture is too salty • Sift breading after each use
• Incorrect breading mixture
• Discard old breading
• Incorrect choice of • Use breading designed for
• Burned shortening avor • Replace shortening
• Frypot not properly cleaned • Drain and clean frypot
• Raw product not fresh • Use fresh raw product
• Cooking temperature too • Check temperature
high (spice avors lost)
Oct. 2002
1-4
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
COOKING SECTION (Continued)
D. Rancid Taste • Shortening too old • Replace shortening and
follow recommended care
and use of shortening
follow recommended care
and use of shortening
cooked within the same
shortening and follow recommended care
and use of shortening
General:
procedures
A. Meat Separation
From Bone
B. Bone Color
Not Proper (black bone)
product (black bone) procedure for product
cooked (red bone)
C. Breading Falls
Off procedures procedure
product before breading
D. Product
Sticking prior to cooking frying instructions
Together
procedure loading procedures
correct amount of product
to be cooked
• Infrequent ltering • Replace shortening and
• Non-compatible products • Replace shortening
• Use compatible products
• Raw product not fresh • Use fresh product
• Incorrect meat cut • Use correct meat cutting
• Overcooking • Check cooking time
• Product not fresh • Use fresh product
• Using frozen product • Use fresh product
• Improper processing of • Use proper processing
• Product not thoroughly • Check cooking time
• Check cooking temperature
• Incorrect breading • Use correct breading
• Product partially frozen • Thoroughly thaw the
• Product breaded too long • Refer to breading and
• Improper loading • Properly load product per
• Wrong cook button pushed • Be sure to select the
Oct. 2002
1-5
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
POWER SECTION
With switch in
POWER position, plugged in
the fryer is com-
pletely inoperative at supply box
(NO POWER)
receptacle
switch; replace if defective
• Open circuit • Check to see that unit is
• Check the breaker or fuse
• Check voltage at wall
• Check MAIN POWER
• Check cord and plug
PRESSURE SECTION
Pressure will not • Exhaust line from solenoid • Turn unit off and allow
exhaust at end of valve to exhaust tank fryer to cool to release
cook cycle clogged pressure from frypot;
clean all pressure lines,
exhaust stacks, and exhaust
tank
valve per maintenance
section on solenoid valve
Operating
pressure too high fryer to cool to release
pressure from frypot;
remove deadweight and
clean
• Solenoid valve clogged • Check and clean solenoid
• Dead weight clogged • Turn unit off and allow
• Exhaust line to stack clogged • Clean exhaust line to stack
DO NOT OPERATE UNIT IF HIGH-PRESSURE CONDITIONS EXIST; SEVERE INJURIES
AND BURNS WILL RESULT. PLACE POWER/PUMP SWITCH IN THE OFF POSITION
IMMEDIATELY. RELEASE THE PRESSURE BY ALLOWING UNIT TO COOL. THE PRES-
SURE WILL THEN DROP. DO NOT RESUME USE OF UNIT UNTIL CAUSE OF HIGH
PRESSURE HAS BEEN FOUND AND CORRECTED.
Oct. 2002
1-6
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
PRESSURE SECTION (Continued)
Pressure does not • Not enough product in fryer • Place proper quantity of
build or product not fresh fresh product within
frypot to generate steam
removed from deadweight see Unpacking section of
Operator’s Manual
not closing valve per maintenance
section on the solenoid valve
tion on deadweight valve
adjusted; see sections 2-10 &
2-13
necessary per maintenance
section on the safety relief
valve
• Pressure pad broken or crushed • Replace pressure pads
• Metal shipping spacer not • Remove shipping spacer;
• Lid open or not latched • Close and latch lid
• Solenoid valve leaking or • Check or clean solenoid
• Deadweight valve leaking • Repair per maintenance sec-
• Pressure not programmed • Check programming
• Lid gasket leaking • Reverse gasket or lid needs
• Safety relief valve leaking • Check and replace if
Oct. 2002
1-7
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
HEATING OF SHORTENING SECTION
Shortening will not heat
Gas valve knob turned to the OFF • Make sure the gas valve knob is
•
position
turned to the ON position
• Blown fuse or tripped • Reset breaker or replace fuse
circuit breaker at supply
box or control panel
• Blown fuse in PC board • Replace glass fuse in board
• Faulty Power/Pump switch • Check Power/Pump switch
per maintenance section on
the Power/Pump switch
• Faulty cord and plug • Check cord and plug and
power at wall receptacle
• Faulty drain switch • Check drain switch per
maintenance section on
drain switches
• Faulty PC Board • Remove and replace control
panel
• Faulty high limit control switch • Check high limit control
switch per maintenance
section on the high limit
• Drain valve open • Close drain valve
• Possible faulty gas control • With power removed from
valve fryer, check across elec trical leads of gas control valve
with multimeter, and gas
valve in ON position
• Possible faulty temperature probe • Replace temperature probe
• Bad spark ignitor • Replace spark ignitor
• Low air pressure • Clean or replace blower
• Replace air pressure switch
• Faulty ignitor module • Replace module
• Spark ignitor or ame sensor out of • The spark ignitor must be 1/8 inch
adjustment from the pilot hood, and 1/4 inch
from the ame sensor
Oct. 2002
1-8
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
HEATING OF SHORTENING SECTION (Continued)
Heating of • Supply line too small - low • Increase supply line size;
shortening too gas volume refer to installation
slow instructions
system instructions
• Clean dilution box; refer to
section 2-25
section 2-26
• Improper ventilation • Refer to installation
• Observe burners
• Check gas pressure
• Burner out of adjustment • Clean blower wheel; refer to
Shortening
overheating in the program mode
panel
ture probe
• Programming wrong • Check temperature setting
• Faulty PC Board • Remove and replace control
• Faulty temperature probe • Remove and replace tempera-
Oct. 2002
1-9
Model 690
1-3. TROUBLESHOOTING
(Continued)
Problem Cause Correction
SHORTENING FOAMING/DRAINING SECTION
Foaming or boil- • Water in shortening • At end of a cook cycle,
ing over of drain shortening and clean
shortening frypot; add fresh
shortening
sation line
shortening shortening
covering ltering the
shortening
cleaning the fryer frypot; rinse with vinegar
to remove the alkaline, then
rinse with hot water, and
dry frypot
Shortening will
not drain from crumbs rod through drain open frypot ing from inside of frypot
• Condensation line stopped up • Remove and clean conden-
• Improper or bad • Use recommended
• Improper ltering • Refer to the procedure
• Cold zone full of cracklings • Filter shortening
• Improper rinsing after • Clean and neutralize the
• Drain valve clogged with • Open valve, push cleaning
Shortening leaking
through drain
valve
Oct. 2002
• Obstruction in drain • Remove obstruction
• Faulty drain valve • Replace drain valve
1-10
Model 690
1-4. ERROR CODES In the event of a control system failure, the digital display shows
an error message. These messages are coded: “E-4”, “E-5”, “E-6”,
“E-32”, “E-41” and “E-71”. A constant tone is heard when an
error code is displayed, and to silence this tone, press any of the
product buttons.
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-4” Control board overheating Turn switch to OFF position, then turn
switch back to ON; if display still shows
“E-4”, the board is getting too hot; check for
signs of overheating behind the control
panel; once panel cools down the controls
should return to normal; if “E-4” persists,
have control panel replaced
“E-5” Shortening overheating Turn switch to OFF position, then back to
ON; if display shows “E-5”, the heating
circuits and temperature probe should be
checked; once the unit cools down, the
controls should return to normal; if “E-5”
persists, have control panel replaced
“E-6” Temperature probe failure Turn switch to OFF position, then back to
ON; if the display shows “E-6”, the tempera ture probe should be checked; once the
probe is repaired, or replaced, the controls
should return to normal; if “E-6” persists,
have control panel replaced
“E-41” Programming failure Turn switch to OFF position, then back to
ON; if display shows “E-41”, the control
should be re-initialized (See Programming
Section) if the error code persists, have
control panel replaced
“E-71” Pump motor relay failure or Replace relay if contacts are stuck closed;
wiring problem check wiring on POWER/PUMP switch, or at
wall receptacle; L1 and N may be reversed
“E32,
Air pressure switch open; clogged Clean dilution box or replace blower if
HIGH LIMIT,
dilution box or faulty blower; open necessary; have drain switch checked; reset
DRAIN VALVE,
drain switch; open high limit; open high limit or have high limit checked; check
VACUUM
vacuum switch vacuum switch
SWITCH,
BLOWER MOTOR
CHECK
Aug. 2006
1-11
Model 690
1-4. ERROR CODES (Continued)
CE Only - Along with error codes from preceding page, CE
units have the following self-diagnostic error codes:
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-10” High limit Allow unit to cool (15-20 minutes), reset the high limit by
manually pushing up on red reset button; if high limit does
not reset, high limit must be replaced per section 2-4
“E-15” Drain Switch Close the drain using drain valve handle; if display still
shows “E-15,” check the drain microswitch per section 2-22
“E-20A” Air Pressure Press the Timer button to try the ignition process again;
Switch Failure if “E-20A” persists, call Henny Penny’s Service Depart-
(stuck closed) ment
“E-20B” Draft Fan or Press the Timer button to try the ignition process again; if
Air Pressure “E-20B” persists, call Henny Penny’s Service Department;
(stuck open) Switch Failure Number of failures can be seen in Review
Usage (pg. 3-24) of Operator’s Manual, then press EXIT
COOL
“E-20C” Left Gas Module Press the Timer button to try the ignition process again; if
Failure “E-20C” persists, call Henny Penny’s Service Department
“E-20D” Right Module Press the Timer button to try the ignition process again; if
Failure “E-20D” persists, call Henny Penny’s Service Department
“E-20E” Both Modules Press the Timer button to try the ignition process again; if
Failure “E-20E” persists, call Henny Penny’s Service Department
“E-20F” Left Module Press the Timer button to try the ignition process again; if
No Flame Sense “E-20F” persists, call Henny Penny’s Service Department
“E-20G” Right Module Press the Timer button to try the ignition process again; if
No Flame Sense “E-20G” persists, call Henny Penny’s Service Department
“E-20H” Both Modules Press the Timer button to try the ignition process again; if
No Flame Sense “E-20H” persists, call Henny Penny’s Service Department
Aug. 2010
1-12
Model 690
SECTION 2. MAINTENANCE
2-1. INTRODUCTION This section provides checkout and replacement procedures for
various parts of the fryer. Before replacing any parts, refer to
the Troubleshooting section to aid you in nding the cause of
the malfunction.
2-2. MAINTENANCE HINTS 1. A multimeter will help you 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 should read innity.
Do not move the fryer with hot shortening in the frypot
ordrainlterpan.Severeburnscanresultfrom
splashing hot shortening.
4. Remove weights from frame to easily access rear of fryer.
2-3. PREVENTIVE To ensure a long life of fryers and their components, regular
MAINTENANCE maintenance should be performed. Refer to the chart below.
Frequency Action
Daily Clean deadweight assembly cap, weight,
and deadweight orice (see section 2-15)
See KFC’s Filtering of shortening
Standards Library
Monthly Check dilution box, clean as needed
(see section 2-25)
Monthly Clean the Nylatrons (see section 2-14)
Annually Clean blower wheel (see section 2-26)
Annually Lubricate lid rollers in back of fryer
(see section 2-32)
Annually Remove and clean safety relief valve
(see section 2-16)
See KFC’s Cleaning the frypot
Standards Library
Every 90 Days Reversing lid gasket (see section 2-10)
Annually Inspect lift Cables
July 2012
2-1
Model 690
2-4. HIGH TEMPERATURE
LIMIT CONTROL This high temperature control is a safety, manual reset control,
which senses the temperature of the shortening. If the shorten-
ing temperature exceeds 425°F (218°C), this switch opens and
shuts off the heat to the frypot. When the temperature of the
shortening drops to a safe operation limit (15-20 minutes),
manually reset by pressing the red reset button. The red reset
button is located under the control panel, in the front of the
fryer. Once reset, the frypot starts heating.
Before replacing a high temperature limit control, check to see
that its circuit is closed.
Checkout
The shortening temperature must be below 380°F
(193°C) to accurately perform this check.
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. Remove the control panel.
3. Remove the two nuts securing high limit bracket to the unit,
and pull the bracket from the unit.
4. Remove the two screws securing the high limit to bracket,
and remove the high limit from the bracket.
5. Remove the two electrical wires from the high temperature
limit control.
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.)
Aug. 2010
2-2
Model 690
2-4. HIGH TEMPERATURE
LIMIT CONTROL
(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 will open,
shutting off electrical power. The control cannot be reset.
2. Drain shortening from the frypot and discard. A substance
in the tube could contaminate the shortening.
3. Remove control panel.
4. Loosen small inside screw nut on capillary tube.
5. Remove capillary bulb from bulb holder inside the frypot.
6. Straighten the capillary tube.
7. Remove larger outside nut that threads into pot wall, and
remove defective control from control panel area.
8. Insert new control and replace screws.
9. Uncoil capillary line, starting at capillary tube, and insert
through frypot wall.
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.
10. Carefully bend the capillary tube as shown in photo and place
into bulb brackets.
Oct. 2002
2-3
Model 690
2-4. HIGH TEMPERATURE 11. Pull all excess capillary line from the frypot and tighten nut
LIMIT CONTROL into frypot wall.
(Continued)
Be sure capillary bulb of high limit is positioned so it does
not interfere with the carrier or get damages when clean ing the frypot.
12. With excess capillary line pulled out, tighten smaller nut.
13. Replace front panel.
14. Rell with shortening.
2-5. POWER/PUMP SWITCH The Power/Pump switch is a three-way rocker switch with a
center OFF position. With the switch in the POWER position,
the fryer operates. With the switch in the PUMP position, the
lter pump operates, but the unit will not heat.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
Checkout
1. Remove Control Panel.
2. Label and remove wires from the switch.
3. “OFF” Position - should be open circuit anywhere on the
switch.
4. “Power” Position. Check from: #5 to #6 closed circuit
#l to #2 closed circuit
5. “Pump” Position. Check from: #4 to #5 closed circuit
#3 to #2 closed circuit
Check across the jumpers on the wires of the Power/Pump
switch. These jumpers have resistors and capacitors which
may be faulty.
Oct. 2002
2-4
Model 690
2-5. POWER/PUMP SWITCH
(Continued)
Replacement
1. With control panel removed, and wires off the switch,
push in on tabs on the switch to remove from the panel.
2. Replace with new switch, and reconnect wires to switch
following the wiring diagram.
3. Replace the control panel.
2-6. TEMPERATURE PROBE Temperature Probe relays the actual shortening temperature
REPLACEMENT to the control. If it becomes disabled, “E-6” will show in the
display. Also, if the temperature is out of calibration more than
10°F, or 10°C, the temperature probe should be replaced. An
Ohm check can be performed also. See chart at end of this
section.
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.
3. Remove the Control Panel.
4. Using a 1/2” wrench, remove the nut on the compression
tting.
5. Remove the temperature probe from the frypot.
6. Place nut and new ferrule on new temperature probe and
insert the temperature probe into the compression tting
until it extends 1/2 inch (1.3 cm) into the frypot. Use the
temperature probe gauge provided in the temperature
probe kit to ensure proper placement in frypot. See
Figure 2-1
Figures 2-1 and 2-2.
Aug. 2006
2-5
Model 690
2-6. TEMPERATURE PROBE 7. Tighten hand tight and then a half turn with wrench.
REPLACEMENT (Continued)
Excess force will damage temperature probe.
8. Connect new temperature probe to PC board and replace
Control Panel.
9. Replace shortening.
10. Turn power ON and check out fryer.
Figure 2-2
2-7. COMPLETE CONTROL Should the Control Panel become inoperative, follow these
PANEL - HENNY PENNY instructions for replacing the board.
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. Remove the two screws securing the Control Panel and lift
panel up and out.
3. Unplug the connectors going to the Control Board.
4. Install a new Control Panel.
Aug. 2006
2-6
Model 690
2-8. PRESSURE REGULATION The Henny Penny Fryer uses pressure as one of the compo-
nents of the cooking process. Once the lid is sealed to the
frypot and the solenoid valve closes, a deadweight valve
maintains the correct pressure in the frypot.
The lid has minimal and limited maintenance and repair proce dures, which are addressed in the following sections.
The following is a routine maintenance schedule for the lid:
Every 90 days
• Clean and reverse the lid gasket.
Yearly Inspection
• Check lid gasket for splitting and tears - replace if neces
sary.
• Check pressure pads for wear - rotate if necessary.
• Check cam slide guides - replace if worn or broken.
• Check lid rollers - replace if cracked or damaged.
2-9. TILTING THE LID The lid assembly is easily tilted up for cleaning or servicing.
UPRIGHT
1. Raise the lid and remove racks and carrier.
2. Grasping the lid handle, lift the front of the lid up until it
stops in an upright position.
Be sure the metal arm on the left side of the lid is in the
vertical position holding the lid upright, or severe
injuries could result. (See photo at left.)
Oct. 2002
2-7
Model 690
2-10. REVERSING THE LID The gray rubber gasket surrounding the inside of the lid is
GASKET designed to be reversed.
Because of heat expansion and the pressure used for the cook
ing process, the gasket is constantly under extreme stress.
Reversing the lid gasket will help to ensure that the fryer will
not lose pressure through leakage.
1. Put the lid in the upright position, as previously described.
2. Using a thin blade screwdriver, pry out the gasket at the
corners. Remove the gasket.
Check the gasket for any tears or nicks. If the gasket is
damaged, it needs to be replaced.
Be sure the metal arm on the left side of the lid is in the
vertical position holding the lid upright, or severe
injuries could result. (See photo on page 2-7.)
3. Clean the gasket and gasket seat with hot water.
4. Rotate the gasket with the opposite side facing out.
Install the four corners of the lid gasket. Smooth the gasket
into place, working from the corners towards the middle of
each side.
Oct. 2002
2-8
Model 690
2-11. LID COUNTERWEIGHT
CABLES
The Lid Counterweight in the back of the fryer balances the
weight of the lid system to allow easier opening and closing of
the lid. The weight has two cables attached to it, and weighs
about 150 lbs. (67.5 Kg).
1. Using a 3/8” socket, remove the nuts securing the rear
shroud of the fryer and remove the shroud.
2. Using Phillip’s-head screwdriver, remove screws securing
the top cap and remove cap.
3. Raise the lid.
4. Unscrew the broken cable from the weight assembly and
bracket attached to the fryer, and remove broken cable.
5. Screw a 5/16” nut on each end of the new cable.
6. Using a wrench, screw the new cable into the weight
assembly until tight.
7. Using a 1/2” wrench, tighten nut (already threaded on the
cable) against the weight assembly, securing the cable into
weight assembly.
8. Pull the cable over the pulley and down behind the weight
assembly.
9. Insert the cable into the hole in bracket and screw a 5/16”
nut onto end of the cable. Tighten cable, by screwing
the cable through this nut until the weight assembly
becomes level.
The safety cable should now have slack in it with the
weight assembly level.
10. Tighten the nut against the top of the bracket, securing the
cable.
11. Replace top cap and rear shroud; repair is now complete.
May 2007
2-9
Model 690
2-12. PRESSURE PAD The pressure pads are plastic strips that the lid cam presses
against to seal the lid.
1. Raise the lid.
2. Remove the four screws securing the lid cover and remove
cover.
3. Push the lid cam back, off the pressure pads.
4. Using an Allen wrench, remove the large bolt securing pad.
5. Using a Phillips head screw driver, remove the small screw
securing the pad and remove the broken pad.
If the pressure pad is worn, but not broken, it can be
reversed 180 degrees, and the other end of the pad used.
6. Install new pad in reverse order.
Oct. 2002
2-10
Model 690
2-13. LID ADJUSTMENT If steam leaks out from around the lid gasket, the pressure pads
could be worn or broken. If the pressure pad is worn, but not
broken, it can be reversed 180 degrees, and the other end of the
pad used. See Section 2-12.
If steam leaks, check for:
• Pressure pad wear
• Cracked or worn gasket
• Gasket installed improperly
• Fryer operating above 12 psi (827 mbar)
Fryer should be operating at 12 psi (827 mbar), or
serious burns could result.
2-14. CLEAN THE NYLATRONS 1. Spray Henny Penny biodegradable, food safe, foaming
degreaser (part no. 12226) on Nylatrons.
2. Raise lid up and down several times to spread degreaser.
3. Wipe Nylatrons to remove food soil, grease, and degreaser
residue.
Aug. 2010
2-11
Model 690
2-15. SOLENOID VALVE This is an electromechanical device that causes pressure to be
held in the frypot. The solenoid valve closes at the beginning
of the cook cycle and opens automatically at the end of the
cook cycle. If this valve should become dirty, or the Teon
seat nicked, pressure will not build up. The gas fryer uses a
120 volt, 60 Hz coil (208/240 volt, 50 Hertz internationally).
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
Coil Check Procedure
Remove the solenoid wires from the wire nuts which are found
behind the control panel. Check across wires.
RESULTS
208/240 Volt, 60 Hertz 150 Ohms
208/240 Volt, 50 Hertz 230 Ohms
120 Volt, 60 Hertz 50 Ohms
Replacement
1. Remove the right side panel.
2. Remove the Tru-Arc retaining clip on top of coil housing.
3. Remove the cover.
4. If only the coil is to be replaced, disconnect the two coil
wires at the wire nuts in the coil housing. Remove the coil,
insert new coil, and connect the wires at the wire nuts.
Assemble in reverse order of disassembly.
The wires may be connected in any order.
Aug. 2007
2-12
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