Henny Penny PFG-691 Service Manual
Henny Penny
Pressure Fryer
Model PFG-691
TECHNICAL MANUAL
Model 691
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 flow of combustion and ventilation air . Adequate clearance must be left all
around appliance for sufficient air to the combustion chamber .
The Model PFG-691 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 fr ee 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 RESUL T .
1 10 3 FM06-007 Revised 10-09-08
Model 691
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, 2 W ire + Ground
240 VAC, 1 Phase, 50/60 Hz, 5 Amp, 2 W ire + Ground
Heating Propane or Natural Gas; 100,000 BTU/hr.
Pressure 9 psi operating pressure (621 mbar)
14.5 psi safety relief pressure (999 mbar)
Shipping W eight Approximately 800 lbs. (363 kg.)
Accessories Shipped Eight wire baskets, basket carrier, and standard cleaning
brushes
A data plate, located on the right side panel, gives the information of the type of fryer,
serial number, warranty date, and other information pertaining to fryer .
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 ....................................................................2-1
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 .......................................................................................2-6
2-9 Tilting the Lid Upright..................................................................................... 2-7
2-10 Reversing the Lid Gasket ...............................................................................2-8
2- 1 1 Lid Counterweight Cables .............................................................................. 2-9
2-12 Pressure Pads ................................................................................................ 2-11
2-13 Lid Adjustment ............................................................................................... 2-12
2-14 Solenoid V alve ................................................................................................ 2-13
2-15 Deadweight Valve .......................................................................................... 2-15
2-16 Removal of Safety Valve ............................................................................... 2-16
2-17 Pressure Gauge .............................................................................................. 2-17
2-18 Gas Control Valve .......................................................................................... 2-18
2-19 Blower Assembly ........................................................................................... 2-20
2-20 Transformer....................................................................................................2-21
2-21 Airflow Switch ............................................................................................... 2-22
2-22 Drain Microswitch ......................................................................................... 2-23
2-23 Drain Valve and Extension ............................................................................. 2-24
2-24 Air Valve ........................................................................................................ 2-25
2-25 Cleaning the Dilution Box............................................................................... 2-26
2-26 Cleaning the Blower Wheel ........................................................................... 2-26
2-27 Ignition Modules ............................................................................................. 2-27
2-28 Ignitor Assembly ............................................................................................ 2-28
2-29 Flame Sensor Assembly................................................................................. 2-29
2-30 Ignitor and Flame Sensor Adjustment ............................................................ 2-29
2-31 Nylatron Strips Replacement .........................................................................2-30
2-32 Lubricating Lid Rollers ................................................................................... 2-31
120 V olt W iring Diagram ................................................................................ 2-32
208-240 V olt W iring Diagram ......................................................................... 2-33
230 V olt W iring Diagram ................................................................................ 2-34
230 Volt Ladder Diagram ............................................................................... 2-35
Model 691
304 i
TABLE OF CONTENTS
Section Page
Section 3. P AR TS 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
Model 691
ii 106
Model 691
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 per 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 safety related,
the words DANGER, WARNING , CAUTION, and NOTICE
are used. Their usage is described below .
SAFETY ALER T SYMBOL is used with DANGER,
W ARNING, 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,
may result in minor or moderate injury.
W ARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
DANGER INDICA TES AN IMMINENTL Y
HAZARDOUS SITUA TION WHICH, IF NOT
AVOIDED, WILL RESULT IN DEATH OR SERIOUS
INJURY.
1-1
1-3. TROUBLESHOOTING T o 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.
4. Refer to the maintenance procedures in the Maintenance
Section to safely and properly make the checkout and repair
needed.
Model 691
If maintenance procedures are not followed corr ectly,
injuries and/or property damage could result.
1-2
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
COOKING SECTION
Product color not correct:
Model 691
A. Too dark
B. T oo light
• 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
• Temperature too low • Check temperature setting.
• Remove and replace tempera-
ture probe
• Fryer incorrect preheat • Allow proper preheat time
C. Product
greasy
• Slow fryer heat-up/recovery • Check gas pressure and blower
airflow
• Wrong cook button • Be sure to select the
pushed correct product to be cooked
• Shortening old • Replace shortening
• Temperature too low • Check temperature setting
• Temperature not recovered
when product was dropped
in frypot
• Faulty temperature probe • Remove and replace defective
temperature probe
• Burner out of adjustment. • Check blower airflow for
restriction
• Frypot overloaded • Reduce cooking load
• Product not removed from • Remove product from
frypot immediately after frypot immediately after
depressurization depressurization
1-3
Model 691
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
COOKING SECTION (Continued)
D. Spotted • Improper separation of the • Load product into basket
product product properly
• Breading not uniform on • Sift breading regularly
the product
• Separate product during
breading
• Burned breading particles • Filter the shortening more
on product frequently
• Product sticking together • Separate product prior to
pressure cooking
E. Dryness of product • Moisture loss prior to • Use fresh products
cooking
• Overcooking the product • Reduce cooking time
• Reduce cooking temperature
• Low operating pressure • Check pressure gauge leaks
reading, check for pressure
• W rong cook button pushed • Be sure to select the correct
product to be cooked
Product flavor (taste):
A. Salty taste • Breading mixture is too salty • Sift breading after each use
• Incorrect breading mixture
• Discard old breading
• Incorrect choice of breading • Use breading designed for
the desired product
B. Burned taste • Burned shortening flavor • Replace shortening
• Cookpot not properly cleaned • Drain and clean frypot
C. Bland taste • Raw product not fresh • Use fresh raw product
1-4
• Breading mixture incorrect • Use breading designed for
for product (spice content desired product
too low)
• Cooking temperature too • Check temperature
high (spice flavors lost)
Model 691
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
• Infrequent filtering • Replace shortening and
follow recommended care
and use of shortening
• Non-compatible products • Replace shortening
cooked within the same
shortening follow recommended care and
• Use compatible products and
use of shortening
• Raw product not fresh • Use fresh product
General:
A. Meat
Separation procedures
from bone
• Incorrect meat cut • Use correct meat cutting
• Overcooking • Check cooking time
• Product not fresh • Use fresh product
B. Bone color
not proper (black bone)
• Using frozen product • Use fresh product
• Improper processing of • Use proper processing
product (black bone) procedure for product
• Product not thoroughly • Check cooking time
cooked (red bone)
C. Breading falls
off procedure
• Incorrect breading procedures • Use correct breading
• Check cooking temperature
• Product partially frozen • Thoroughly thaw the product
before breading
D. Product • Product breaded too long • Refer to breading and
sticking prior to cooking frying instructions
together
• Improper loading procedure • Properly load product per
loading procedures
• Wrong cook button pushed • Select the correct amount of
product to be cooked
1-5
Model 691
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
POWER SECTION
With switch in • Open circuit • Check to see that unit is
POWER position, plugged in
the fryer is completely
inoperative at supply box
(no power) • Check voltage at wall
• Check the breaker or fuse
receptacle
• Check POWER switch;
replace if defective
• Check cord and plug
PRESSURE SECTION
Pressure will not • Exhaust line from solenoid • T urn unit of f 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
• Solenoid valve clogged • Check and clean solenoid
valve
Operating
pressure too high fryer to cool to release
• Deadweight clogged • T urn unit of f and allow
pressure from frypot;
remove deadweight and clean
• 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 THE POWER/PUMP SWITCH IN THE
OFF POSITION IMMEDIATELY. RELEASE THE PRESSURE BY ALLOWING UNIT TO
COOL. THE PRESSURE WILL THEN DROP. DO NOT RESUME USE OF UNIT UNTIL
CAUSE OF HIGH PRESSURE HAS BEEN FOUND AND CORRECTED.
1-6
Model 691
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
• Metal shipping spacer not • Remove shipping spacer;
removed from deadweight see Unpacking section of
Operator’s Manual
• Lid open or not latched • Close and latch lid
• Solenoid valve leaking or • Check or clean solenoid
not closing valve
• Deadweight valve leaking • Repair or replace fittings, or
deadweight body
• Pressure not programmed • Check programming
• Lid gasket leaking • Reverse gasket or lid needs
adjusted
• Safety relief valve leaking • Check and replace, if
necessary
• Pressure plate broken or crushed • Replace pressure plate
1-7
Model 691
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
HEA TING OF SHORTENING SECTION
Shortening will • Blown fuse or tripped • Reset breaker or replace fuse
not heat (“E-20”) 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
• Faulty cord and plug; • Check cord and plug and
check power at receptacle power at wall receptacle
• Faulty drain switch • Check drain switch
• Faulty PC Board • Remove and replace control
panel
• Faulty high limit control • Check high limit control
switch switch; replace if necessary
• Drain valve open • Close drain valve
• Possible faulty gas control • With power removed from
valve fryer, check across electrical
leads of gas control valve with
multimeter, and with gas valve
knob to ON position
• Possible faulty temperature probe • Replace temperature probe
(“E-6”)
• Bad ignitor • Replace ignitor
• Low air pressure into • Clean or replace blower
burner chamber • Replace air pressure switch
• Faulty ignitor module • Replace module
• Spark ignitor or flame sensor • The spark ignitor needs to be
out of adjustment 1/8 in. (3.18 mm) from the
pilot hood, and the flame
sensor, 1/4 in. (6.35 mm)
1-8
• Gas valve knob turned to the • Make sure the gas valve
OFF position knob is turned to the ON
position
Model 691
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
HEA TING OF SHORTENING SECTION (Continued)
Heating of • Supply line too small; low • Increase supply line size
shortening too gas volume Refer to installation
slow instructions
• Improper ventilation • Refer to installation
system instructions
• Observe burners
• Check gas pressure
• Improper air flow to burners • Check blower for resriction of
airflow
Shortening
overheating in the program mode
• Programming wrong • Check temperature setting
• Faulty PC Board • Remove and replace control
panel
• Faulty temperature probe • Remove and replace tempera-
ture probe
1-9
Model 691
1-3. TROUBLESHOOTING (Continued)
Problem Cause Correction
SHORTENING FOAMING/DRAINING SECTION
Foaming or boiling • Water in shortening • At end of cook cycle,
over of drain shortening and clean
shortening frypo t ; a d d f r e s h
shortening
• Condensation line clogged • Remove and clean conden-
sation line
• Improper or bad shortening • Use recommended
shortening
• Improper filtering • Refer to the procedure
covering filtering the
shortening
• Cold zone full of cracklings • Filter shortening
• Improper rinsing after • Clean and neutralize the
cleaning the fryer frypot; rinse with vinegar
to remove the alkaline, then
rinse with hot water and
dry frypot
Shortening will • Drain valve clogged with • Open valve, push cleaning
not drain from crumbs rod through drain opening
frypot from inside of frypot
• Drain valve will not open by • Replace cotter pins in valve
pulling the handle coupling
Shortening leaking • Obstruction in drain • Remove obstruction
through drain valve
• Faulty drain valve • Replace drain valve
1-10
Model 691
1-4. ERROR CODES In the event of a control system failure, the digital display will show
an error message which are coded: “E-4”, “E-5”, “E-6”, “E-10”,
“E-15”, “E-20A-D”, “E-41”, “E-46”, “E-47”, “E-48”, “E-70B”,
and “E-92”. 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 Turn switch to OFF position, then turn switch back to ON;
overheating 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, replace the control
“E-5” Shortening Turn switch to OFF position, then back to ON; if display
overheating 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, replace the control
“E-6A” Temperature Turn switch to OFF position, then turn switch back to ON;
probe open if display shows “E-6”, have the temperature probe checked
“E-6B” Temperature Turn switch to OFF position, then turn switch back to ON;
probe shorted if display shows “E-6”, have the temperature probe checked
“E-10” High limit Reset the high limit by manually pushing up on the red reset
button; if the high limit does not reset, the high limit must be
replaced; call Henny Penny’s Service Department
“E-15” Drain switch Close the drain using the drain valve handle; if display still
shows “E-15”, call Henny Penny’s Service Department
“E-20A” Air pressure switch Press the timer button to try the ignition process again; and if
failure (stuck closed) “E-20A” persists, call Henny Penny’ s Service Department
“E-20B” Draft fan or Press the Timer button to try the ignition process again; and if
air pressure “E-20B” persists, call Henny Penny’s Service Department
switch failure
(stuck open)
“E-20C” Ignition module Press the Timer button to try the ignition process again; and if
failure “E-20C” persists, call Henny Penny’s Service Department
“E-20D” Modules working Press the Timer button to try the ignition process again; and if
but no ignition “E-20D” persists, call Henny Penny’ s Service Department
1004 1-11
4-2. ERROR CODES (Continued)
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-41” Programming Turn switch to OFF position, then back to ON; if display
failure shows “E-41”, the control should be re-initialized (see Pro-
gramming section); if the error code persists, replace the
control panel
“E-46” Eeprom memory Turn switch to OFF position, then back to ON; if display
write error shows “E-46”, the control should be re-initialized (see Pro
gramming section); if the error code persists, replace the
control panel
Model 691
“E-47” A-to-D failure Turn switch to OFF position, then back to ON; if display
(Analog converter shows “E-47”, the control should be re-initialized (see Prochip) gramming section); if the error code persists, replace the
control panel
“E-48” Input system Turn switch to OFF position, then back to ON; if display
error (CPU can’t shows “E-48”, the control should be re-initialized (see Proread buttons graming section); if the error code persists, replace the control
digital inputs) panel
“E-70B” Faulty power Have power switch checked, along with its wiring; have
switch, or switch Input/Output board replaced if necessary
wiring; faulty
I/O board
“E-92” 24-V AC fuse Have components, in 24-volt circuit (I.E., hi limit, drain switch)
on I/O board open checked for shorts
1-12 1004
Model 691
SECTION 2. MAINTENANCE
2-1. INTRODUCTION This section provides procedures for the checkout and replace-
ment 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. Y ou may want 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 .
Do not move the fryer with hot shortening in the frypot or
filter drain pan. Severe burns can result from splashing
hot shortening.
4. The counterweights can be removed from the frame to easily
access the rear of fryer .
2-3. PREVENTIVE T o ensure a long life of the fryers and their components, regular
MAINTENANCE maintenance should be performed. Refer to the chart below .
Frequency Action
Daily Clean deadweight valve cap, weight and dead-
weight orifice. (See Deadweight V alve Section)
T wice Daily Filter shortening (See Operator’s Manual)
Monthly Check dilution box, Clean as needed
(See Cleaning the Dilution Box Section)
Annually Clean blower wheel (See Cleaning the Blower
Wheel Section)
Annually Lubricate lid rollers in back of fryer.
(See Lubricating Lid Rollers Section)
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 shortening 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, 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 shortening again starts heating.
2-1
Model 691
2-4. HIGH TEMPERATURE
LIMIT CONTROL (Continued)
Checkout Before replacing a high temperature limit control, check to see
that its circuit is closed.
The shortening temperature must be below 380°F (193°C)
to accurately perform this check.
1. Remove electrical power supplied to the fryer.
T o avoid electrical shock or pr operty damage, move the
power switch to OFF and disconnect main circuit
breaker , or unplug cord at wall r eceptacle.
Replacement
2. Remove the control panel.
3. Remove the two nuts securing the high limit bracket to the unit,
and pull the bracket from the unit.
4. Remove the two screws securing the high limit to the 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 cir
cuit is closed, the high limit is not defective. Reconnect the two
electrical wires.)
T o avoid electrical shock or pr operty damage, move the
power switch to OFF and disconnect main circuit
breaker , or unplug cord at wall r eceptacle.
2-2
1. If the tube is broken or cracked, the control will open,
shutting off electrical power . The control cannot be reset.
Model 691
2-4. HIGH TEMPERATURE 2. Drain shortening from the frypot and discard. A substance
LIMIT CONTROL in the tube could contaminate the shortening.
(Continued)
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.
8. Remove defective control from control panel area.
9. Insert new control and replace screws.
10. Uncoil capillary line, starting at capillary tube, and insert
through frypot wall.
T o 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 a position where it
could accidentally touch the electrical power terminals.
11. Carefully bend the capillary tube as shown in photo and place
into bulb brackets.
12. Pull excess capillary line from pot and tighten nut into frypot
wall.
Be sure capillary bulb of high limit is positioned so it doesn’t
interfere with the carrier or get damaged when cleaning the
frypot.
13. With excess capillary line pulled out, tighten smaller nut.
14. Replace front panel and refill with shortening.
2-3
Model 691
2-5. POWER/PUMP SWITCH The POWER/PUMP switch is a three-way rocker switch with a
center OFF position. W ith the switch in the POWER position,
the fryer will operate. With the switch in the PUMP position ,
the filter pump will operate, but the unit will not heat.
T o avoid electrical shock or pr operty damage, move the
power switch to OFF and disconnect main circuit
breaker , or unplug cord at wall r eceptacle.
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
Replacement Check across the jumpers on the wires of the POWER/PUMP
switch. These jumpers have resistors and capacitors which may
be faulty .
1. With control panel removed, and wires off of 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.
2-4 1004
Model 691
2-6. TEMPERATURE PROBE The temperature probe relays the actual shortening temperature
REPLACEMENT to the control. If it becomes disabled, “E06” 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.
Figure 2-1
4. Using a 1/2" wrench, remove the nut on the compression fitting.
5. Remove the temperature probe from the frypot.
6. Place the nut and new ferrule on the new temperature probe and
insert the temperature probe into the compression fitting 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 Figures 2-1 and 2-2.
7. T ighten hand tight and then a half turn with wrench.
Excess force will damage temperature probe.
8. Connect new temperature probe to PC board and replace
control panel.
9. Replace shortening, and then turn power ON and check out
fryer.
Figure 2-2
507 2-5
Model 691
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.
T o avoid electrical shock or pr operty damage, move the
power switch to OFF and disconnect main circuit
breaker , or unplug cord at wall r eceptacle.
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.
2-8. PRESSURE REGULA TION The Henny Penny fryer uses pressure as one of the components 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 procedures, 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
Y early Inspection
• Check lid gasket for splitting and tears - replace if necessary
• 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
• Lubricate rear lid rollers
• Cleaning safety relief valve
2-6 1004
Model 691
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.)
904 2-7
Model 691
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 cooking
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 in Tilting the Lid Upright
Section.)
3. Clean the gasket and gasket seat with hot water.
4. Rotate the gasket with the opposite side facing out.
Install the fourcorners of the lid gasket. Smooth the gasket into
place, working from the corners towards the middle of each
side.
2-8 904
Model 691
2-11. LID COUNTER WEIGHT The lid counterweight in the back of the fryer balances the
CABLES 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. (68.0 Kg).
1. Using a Phillips head screwdriver, remove the screws securing
the back and top shrouds of the fryer and remove the shrouds.
2. Raise the lid.
3. Remove the steam box.
4. Remove the nipples from the deadweight and solenoid that are
attached to the front shroud.
5. Remove the screws securing the shroud to the frame and remove
the shroud.
6. Remove the nut from the nylatron slide and flip loosened end up
over the lid.
7. Remove the four keps nuts from the bracket at top of the shroud.
8. Place support under lid arm (ex: block of wood), and remove the
weights from the frame in the back of the fryer.
2-9 904
Model 691
2-11. LID COUNTER WEIGHT 9. Remove the Allen head bolts securing the stabilizer bracket and
CABLES (Continued) remove the bracket.
10. Remove the bolts and spacers securing the pulley bracket, and
pull bracket back, to allow access to cable bracket.
11. Pull cable and bracket from unit and remove cable from bracket.
12. Remove cable from weight frame.
13. Thread new cable through pulley.
14. Thread nut on cable and place cable through weight frame.
15. Thread second nut onto end of cable, but do not tighten.
16. Thread nut on other end of cable and place through the
bracket, then thread a second nut on the end of the cable. Tighten
the nut to the bracket. T wo inches (50.8 mm) of the threaded
end should show above the bracket. See photo below .
2 inches (50.8 mm)
Both cables should have the same amount of threads extending
through the brackets.
17. Tighten cable onto weight frame.
18. Reassemble in reverse order.
Be sure to use pipe sealant on the pipe fittings.
2-10 904
Model 691
2-12. PRESSURE P ADS The pressure pads are plastic strips that the lid cam presses
against to seal the lid. They are located on top of the shims.
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 the pad.
5. Using a Phillips head screwdriver, remove the small screw
securing the pad securing the pressure plate 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.
904 2-11
Model 691
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 Pressure Pads Section.
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.
2-12 904
Loading...