Frymaster FPHD User Manual
High Efficiency Decathlon (HD)
Series Gas Fryers
Service & Parts Manual
Dean HD & SCFHD,
Frymaster FPHD Models
(Includes HD63/Red Robin and Common Cabinetry)
Dean, a member of the Commercial Food Equipment Service Association, recommends using
CFESA Certified Technicians.
PRINTED IN THE UNITED STATES
OF AMERICA
24-Hour Service Hotline
1-800-551-8633
*8196314*
MAY 2007
Please read all sections of this manual and retain for future reference.
This product has been certified as commercial cooking equipment and MUST be installed by
professional personnel as specified. Installation, maintenance and repairs should be performed
by your FRYMASTER FACTORY AUTHORIZED SERVICE CENTER.
DANGER
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other cooking appliance.
DANGER
Instructions explaining procedures to be followed MUST be posted in a prominent location in
the event the operator detects a gas leak. This information can be obtained from the local gas
company or gas supplier.
WARNING
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.
DANGER
Safe and satisfactory operation of your equipment depends on proper installation. Installation
MUST conform with local codes, or in absence of local codes, with the National Fuel Gas Code,
ANSI Z223.1; The Natural Gas Installation Code, CAN/CGA-B149.1; The Propane Installation
Code, CAN/CGA-B149.2; or The latest edition of the National Electric Code, N.F.P.A. 70.
NOTICE
If, during the warranty period, the customer uses a part for this Enodis equipment other than an
unmodified new or recycled part purchased directly from Frymaster and Dean, or any of its
authorized service centers, and/or the part being used is modified from its original
configuration, this warranty will be void. Further, Frymaster and Dean and its affiliates will not
be liable for any claims, damages or expenses incurred by the customer which arise directly or
indirectly, in whole or in part, due to the installation of any modified part and/or part received
from an unauthorized service center.
DANGER
The crumb tray in fryers equipped with a filter system must be emptied into a fireproof container
at the end of frying operations each day. Some food particles can spontaneously combust if left
soaking in certain shortening material. Additional information can be obtained in the filtration
manual included with the system.
DANGER
The front ledge of the fryer is not a step. Do not stand on the fryer. Serious injury can result
from slips or contact with the hot oil.
WARNING
Drawings and photos used in this manual are intended to illustrate operational, cleaning and
technical procedures and may not conform to on-site management operational procedures.
WARNING
No structural material on the fryer should be altered or removed to accommodate placement of
the fryer under a hood. Questions? Call the Frymaster and Dean Service Hotline at 1-800-551-
8633.
This equipment is to be installed in compliance with the basic plumbing code of The Building
Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation
Manual of the Food and Drug Administration.
COMPUTERS
FCC
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
1) This device may not cause harmful interference, and 2) This device must accept any interfere nce
received, including interference that may cause undesired operation. While this device is a verified Class
A device, it has been shown to meet the Class B limits.
CANADA
This digital apparatus does not exceed the Class A or B limits for radio noise emissions as set out by the
ICES-003 standard of the Canadian Department of Communications.
Cet appareil numerique n’emet pas de bruits radioelectriques depassany les limites de classe A et B
prescrites dans la norme NMB-003 edictee par le Ministre des Communcations du Canada.
DANGER
THIS PRODUCT CONTAINS CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE
CANCER AND/OR BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.
Operation, installation, and servicing of this product could expose you to airborne particles of
glasswool or ceramic fibers, crystalline silica, and/or carbon monoxide. Inhalation of airborne
particles of glasswool or ceramic fibers is known to the State of California to cause cancer.
Inhalation of carbon monoxide is known to the State of California to cause birth defects or other
reproductive harm.
WARNING
Do not bang fry baskets or other utensils on the fryer’s joiner strip. The strip is present to seal
the joint between the fry vessels. Banging fry baskets on the strip to dislodge shortening will
distort the strip, adversely affecting its fit. It is designed for a tight fit and should only be
removed for cleaning.
Decathlon Series Gas Fryers
Service and Parts Manual
TABLE OF CONTENTS
1. SERVICE PROCEDURES……..……..……………………………………………...
1.1 Functional Description............................................................................................1-1
1.2 Accessing Fryers for Service...................................................................................1-7
1.3 Cleaning the Gas Valve Vent Tube (if applicable)..............................................1-9
1.4 Adjusting Burner Manifold Gas Pressure..........................................................1-9
1.5 Adjusting the Pilot Flame......................................................................................1-10
1.6 Calibrating the Thermatron Controller and Backup Thermosta t....................1-10
1.7 Replacing Fryer Components...............................................................................1-11
1.8 Troubleshooting and Problem Isolation..............................................................1-28
1.9 Troubleshooting Guides........................................................................................1-36
1.10 Wiring Diagrams....................................................................................................1-38
1.11 Probe Resistance Charts........................................................................................1-43
2. PARTS LIST…….…………………………………..………………………………
2.1 Decathlon Primary Components............................................................................2-1
2.2 Orifices ......................................................................................................................2-9
2.3 Control Panel, Joiner Strips, and Accessories.....................................................2-10
2.4 Optional Components and Controllers................................................................2-11
2.5 3" Oil Drain Manifold, Drain Flush, and Drain Valve Components...............2-15
2.6 Oil Return Manifold Components........................................................................2-16
2.7 Oil Return and Oil Flush Components................................................................2-19
2.8 Filtration Components...........................................................................................2-21
2.9 Basket Lift Components........................................................................................2-24
2.10 Trough, Holster, and Cover Components............................................................2-26
2.11 Fasteners (Screws, Nuts, Bolts).............................................................................2-27
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.1 Functional Description
High Efficiency Decathlon (HD) Series gas fryers
contain a welded stainless steel frypot heated by gas
flames diffused evenly through tubes built into the
frypot.
Flames originate from orifices in a burner manifold
positioned beneath stamped-steel burners. The burners
are positioned in the tube openings at the front of the
frypot. The diameter of the orifices differs for natural
and LP gas as indicated in the accompanying table.
High efficiency burner and diffuser.
GAS INFORMATION (Altitudes of 2000 feet or less)
MODEL
HD50G 95
HD60G 125
INPUT
(BTU)
GAS
TYPE
NAT
LP
NAT
LP
ORIFICE
MM
(INCH)
2.26(#43)
1.40(#54)
2.26(#43)
1.40(#54)
ORIFICE
PART NO.
810-2938
810-2939
810-2938
810-2939
QTY
4
4
5
5
EQUIPMENT
PRESSURE
MBAR
10
27.5
10
27.5
INCH W.C.
4
10
4
10
An electromechanical gas valve regulates gas flow to the manifold. HD Series gas fryers are
equipped with either a 24V valve system. Unit configurations include either a pilot ignition system
or an electronic ignition system.
1-1
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.1 Functional Description (cont.)
Pilot System Configuration
The pilot system is comprised of the pilot orifice, pilot hood, and a thermopile (some systems
incorporate a thermocouple). The pilot serves two purposes: light the burner and heat the
thermopile. In operation, the thermopile is in contact with the pilot flame and generates millivolts.
The millivolt output energizes the gas valve pilot coil, which in turn opens the pilot valve. If the
pilot flame is extinguished, the gas valve pilot coil loses voltage and the pilot valve closes. The
main valve of the gas valve will not open if the pilot valve is not open. The pilot flame must be
manually lit when the fryer is first placed into operation. A separate 24V circuit, activated by the
fryer ON/OFF switch, provides voltage through the Thermatron to the gas valve main coil, which
opens the main valve.
Electronic Ignition Configuration
In units configured for electronic ignition, an ignition module connected to an ignitor assembly
replaces the pilot system. The ignition module performs three important functions: It provides an
ignition spark, supplies voltage to the gas valve, and proofs the pilot flame.
The module contains a 90-second time delay circuit and a coil that activates the gas valve. The
ignitor assembly consists of a spark plug, a pilot, and a flame sensor element.
1-2
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Electronic Ignition Configuration (cont.)
At start-up the ON/OFF switch is placed in the ON position, supplying 12 VDC to the heat control
circuitry in the controller or computer and to one side of the heat relay coil on the interface board. If
resistance in the temperature probe indicates the temperature in the frypot is below 180°F (82°C),
the current flows through a melt cycle circuit where a timer switch alternately closes for 3 seconds
and opens for 24 seconds. If the temperature is 180°F (82°C) or above, the current flows through a
heat circuit, bypassing the timer switch. In either case, current is supplied to the other leg of the heat
relay coil which then closes an electronic switch in the 24 VAC circuit to provide current to the
ignition module. NOTE: The listed melt cycle times and exit temperature pertain to the Compu-Fry
computer only.
Circuitry in the ignition module sends 24 VAC current to the gas valve via a normally closed highlimit switch and a drain safety switch. Simultaneously, the module causes the ignitor to spark for up
to 90 seconds to light the pilot flame. A flame sensor verifies that the pilot is lit by measuring the
flow of microamps through the flame. If the pilot does not light (or is extinguished), current to the
ignition module is interrupted, preventing the main valve from opening, and the ignition module
"locks out" until the power switch is turned OFF, then back ON.
A temperature probe monitors the temperature in the frypot. When the programmed setpoint
temperature is reached, resistance in the probe causes the heat cycle circuitry in the controller to
interrupt current flow through the heat relay. This in turn interrupts the 24 VAC current to the
ignition module, resulting in closure of the gas valve.
NOTE: Unlike previous modules, microamp readings on these black modules will move up and
down as the module pulses on and off and this is an indication that the module is functioning.
Control Options
HD Series gas fryers may be equipped with Thermatron controls or Compu-Fry computers.
In fryers equipped with Thermatron controls, the fryer is turned on and off by means of a rocker
switch and the temperature is set by adjusting a potentiometer. An interface board is located in the
component box (shield) behind the control panel (computer-equipped) or a Thermatron board is
located in a component box inside the cabinet (Thermatron-equipped).
Interface Boards
The interface board provides a link between the controller/computer and the fryer’s individual
components without requiring excessive wiring, and allows the controller to execute commands
from one central point. Two types of interface boards may be used in HD Series gas fryers; the type
used depends on the fryer configuration.
In units configured for electronic ignition and constant pilot, P/N 106-6669 is used; in units
configured with a manually lit pilot (non-electronic ignition), P/N 106-6710 is used.
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Interface Boards (cont.)
826-2086 (115/230V): These boards are used in HD fryers equipped with Thermatron control
systems.
THERMATRON BOARD P/N 826-2086
Thermatron systems incorporate a temperature probe, a potentiometer, and a temperature control
circuit board. This system is more accurate and reliable than a standard thermostat. The temp erature
probe measures oil temperature via resistance (ohms); as oil temperature rises, resistance decreases.
The potentiometer sets the oil temperature via resistance (ohms). The temperature control circuit
board compares the resistance from the probe and potentiometer and cycles the burner on and off as
necessary.
1-4
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Interface Boards (cont.)
826-2434: These interface boards are used in HD fryers equipped with electronic ignition and
constant pilot.
INTERFACE BOARD P/N 106-6669 (Kit 826-2434)
Used on fryers equipped with electronic ignition and constant pilot.
1-5
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Interface Boards (cont.)
FREQUENTLY USED TEST POINTS FOR HIGH EFFICIENCY DECATHLON (HD) FRYER S
106-6669 INTERFACE BOARD
Test Meter Setting Pins Test Results
12VAC Power to Controller 50 VAC Scale 1 and 3 on J3 12-18
12VDC Power to Right BL Relay 50 VDC Scale 4 on J2 and 5 on J2 12-18
12VDC Power to Left BL Relay 50 VDC Scale 7 on J1 and 5 on J2 12-18
24VAC Power to High-Limit 50 VAC Scale 6 on J2 and GROUND 22-28
24VAC Power 50 VAC Scale 2 on J2 and GROUND 22-28
24VAC Power To 24VAC Gas Valve 50 VAC Scale 7 on J2 and GROUND 22-28
Probe Resistance* R x 1000 Ohms 10 and 11 on J2 **
* Disconnect 15-pin harness from controller before testing probe circuit.
** See Probe Resistance Chart at the end of this chapter.
HIGH EFFICIENCY DECATHLON (HD) FRYER
LED DIAGNOSTIC LIGHTS
(106-6669 INTERFACE BOARD)
CMP
24V
HI
HT
AL
Indicates power from 12V transformer.
Indicates power from 24V transformer.
Indicates output (closed) from latch relay (K4).
Indicates output from heat relay (K3).
Indicates output (open) from latch relay (K4).
The board contains two heat relays (K2 and K3), and two basket lift relays (K1 and K4). NOTE: On
factory-original units not equipped with basket lifts and on service interface boards, the board will
have no basket lift relays installed.
1-6
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Thermostats
Different types of thermostats are used in High Efficiency Decathlon Series gas fryers, depending on
fryer configuration.
Fryers equipped with a Thermatron use a dial to adjust temperature. In this configuration, the probe
resistance varies inversely with the temperature. As the temperature rises, resistance decreases at a
non-linear rate. A chart is located at the end of this chapter.
Fryers equipped with computer controls have a temperature probe. In this configuration, the probe
resistance varies directly with the temperature. As the temperature rises, resistance increases at a
rate of approximately 2 ohms for every 1°F (approximately 3.7 ohms for every 1°C). Circuitry in the
computer monitors the probe resistance and controls burner firing when the resistance exceeds or
falls below programmed temperatures (setpoints). The temperatures are programmed by means of a
keypad on the face of the computer.
All HD Series gas fryers are equipped with a high-limit thermostat. In the event that the fryer fails
to control the oil temperature, the high-limit thermostat prevents the fryer from overheating to flash
point. The high-limit thermostat acts as a normally closed power switch that opens when exposed to
temperatures above 450°F/232°C.
1.2 Accessing Fryers for Servicing
DANGER
Moving a fryer filled with cooking oil may cause spilling or splattering of the hot
liquid. Follow the draining instructions included with the fryer before attempting to
relocate a fryer for servicing.
1. Shut off the gas supply to the unit. Unplug the power cords. Remove any attached restraining
devices.
2. Disconnect the unit from the gas supply.
3. Relocate the fryer for service accessibility.
4. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and
plug in the electrical cords.
DANGER
No structural material on the fryer should be altered or removed to accommodate
placement of the fryer under a hood. Questions? Call the Frymaster Dean Service
Hotline at 1-800-551-8633.
1-7
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Restraints
Once the fryer has been positioned at the frying station, use a carpenter’s level placed across the top
of the frypot to verify that the unit is level, both side-to-side and front-to-back.
To level fryers equipped with legs, the bottom of the legs can be screwed out up to one inch for leveling.
Legs should also be adjusted so that the fryer(s) are at the proper height in the frying station.
For fryers equipped with casters, there are no built-in leveling devices. The floor where the fryers
are installed must be level.
When the fryer is leveled in its final position, install the restraints provided with the unit to limit its
movement so that it does not depend on or transmit stress to the electrical conduit or connection.
Install the restraints in accordance with the provided instructions (see illustration below). If the
restraints are disconnected for service or other reasons, they must be reconnected before the fryer is
used.
DANGER
Adequate means must be provided to limit the movement of this appliance without
depending on or transmitting stress to electrical conduits or gas supply line. A
restraint kit is provided with the fryer. If the restraint kit is missing contact your
local Frymaster Factory Authorized Service Center (FASC) for part number 826-0900.
NOTE: If you need to relocate a fryer installed with legs, remove all weight from each leg
before moving. If a leg becomes damaged, contact your service agent for immediate repair or
replacement.
DANGER
Hot oil can cause severe burns. Avoid contact. Under all circumstances, oil must be
removed from the fryer before attempting to move it to avoid oil spills, falls, and
severe burns. This fryer may tip and cause personal injury if not secured in a
stationary position.
1-8
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.3 Cleaning the Gas Valve Vent Tube (if applicable)
1. Set the fryer power switch and the gas valve to the OFF position.
2. Carefully unscrew the vent tube from the gas valve. NOTE: The vent tube may be straightened
for ease in removal.
3. Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any
obstruction. Remove the wire and blow through the tube to ensure it is clear.
4. Reinstall tube and bend so that the opening is pointing downward.
1.4 Adjusting Burner Manifold Gas Pressure
WARNING
This task should be performed by qualified service personnel only.
1. Ensure that the gas valve knob is in the OFF position.
2. Remove the pressure tap plug from the gas valve (see arrows in photos below for location).
Pilot Ignition Valve
(Line Voltage)
Electronic
Ignition Valve
3. Insert the manometer fitting into the pressure tap hole.
4. Place the gas valve in the ON position then place the fryer power switch in the ON position.
When the burner lights and continues to burn, check the gas pressure reading against the table on
page 1-1.
5. To adjust burner gas pressure, remove the cap from the gas valve regulator and adjust to correct
pressure.
6. Place the fryer power switch and the gas valve in the OFF position. Remove the manometer
fitting from the pressure tap hole and reinstall the pressure tap plug.
1-9
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.5 Adjusting the Pilot Flame
1.5.1 Main Pilot
1. Remove the cap from the pilot adjustment screw hole on the gas valve.
2. Using a small, flat-tipped screwdriver, turn the pilot adjusting screw counterclockwise to
increase length of flame or clockwise to decrease length of flame. Adjust to obtain a flame from
1 inch to 1½ inches long.
3. Reinstall the pilot adjustment screw cap.
1.5.2 Trailing Pilot
Unlike older Decathlon units, current production HD units do not have a trailing pilot adjustment.
1.6 Calibrating the Thermatron
1. Fill the frypot to the lower OIL-LEVEL line with cooking oil. If solid shortening is used, it must
be melted before starting the calibration procedure.
2. Ensure the fryer ON/OFF switch is in the OFF position and light the pilot.
3. Place the fryer ON/OFF switch in the ON position. Set the potentiometer dial to 325°F (162°C).
4. Allow the oil to equalize at setpoint temperature. This is evident when the burners have cycled
on and off several times.
5. Insert a thermometer or pyrometer into the frypot within 3 inches of the probe bulb. Ensure the
tip of the thermometer/pyrometer does not touch the frypot burner tube.
6. If the temperature on the thermometer is higher or lower than 325°F (162°C), the knob is out of
calibration.
7. Calibrate the knob by first loosening the setscrew and slowly turning the knob to match the
temperature reading of the thermometer. Tighten the setscrew, ensuring the knob does not move
on the shaft during tightening.
8. Allow burners to cycle on and off several times, then recheck oil temperature as described in
Step 5. If the thermostat dial temperature matches the thermometer temperature, the thermostat
is calibrated. If not, repeat Step 7.
1-10
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7 Replacing Fryer Components
1.7.1 Replacing the Computer
1. Disconnect the fryer from the electrical
supply.
2. Unscrew the two computer panel screws.
The computer panel is hinged at the bottom
and will swing open from the top.
3. Unplug the fryer wiring harness and ground
wire from the back of the computer.
4. Remove the computer by lifting it from the
hinge slots in the fryer control panel frame.
5. Reverse the procedure to install a new
computer.
Computer panel in “down” position.
Disconnect the 15-pin connector and ground
wire (arrows) from the computer.
1-11
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Computer-equipped Fryers
1. Disconnect the fryer from the electrical supply.
2. Drain cooking oil from the frypot. Allow the
frypot to cool completely before proceeding.
3. Remove fryer door for easier access to the
temperature probe. First, remove top hinge
from bracket. Then, lift door off bottom
hinge pin.
Remove the fryer door for easier access to the
temperature probe.
4. Disconnect the probe harness connector
(arrow). Use a pin pusher to remove plug
from probe wires (probe side only). Retain
the plug for re-assembly on new probe.
5. Remove the drain manifold. Only the drain
tubes directly blocking the frypot being
Disconnect the two-pin probe harness
connector (arrow).
replaced require removal.
- Remove the nuts holding the drain valve
strap onto the drain tube stud.
- Disconnect the Teflon tube at the back of
the center dump tube piece and any other
components attached to the tubes,
including drain flush flexlines.
- Loosen the nut on each clamp holding the
rubber boots and drain sections together.
Remove the nuts, Teflon tube (not pictured), clamp,
boot, and drain tubes.
- Carefully remove the tubes by pulling
down at an angle, straight out of the drain
valves, and working them gently out of
the rubber boots. Set aside for
reassembly.
1-12
)
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Computer-equipped Fryers (cont.)
6. Remove the burner shield by loosening the
screw on each end.
7. Remove the burner rail by loosening the
screw on each end. The burner rail secures
the burners in the burner manifold. Be
careful to ensure that the burners do not fall
out of the gas manifold, as they might be
damaged and dented.
Remove the burner rail and burner shield.
8. Remove the burners to gain access to the
temperature probe and to ease frypot
removal. Lean each burner slightly away
from the frypot to clear the burner seal
(metal box attached to frypot). Then, pull
the burner up and off of the orifice. The
burners should be easy to remove and do
not require force.
Remove burners to gain access to temperature
probe (arrow).
9. Loosen and unscrew the compression nut
and the pass-through nut completely from
the frypot. Proceed to the next step before
removing the probe from the frypot.
Loosen and unscrew completely the compression
nut (bottom arrow), then the pass-through nut (top
arrow
.
1-13
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Computer-equipped Fryers (cont.)
10. Locate the temperature probe inside the
frypot. Remove the temperature probe
mounting hardware. Retain mounting
hardware for installation of new
temperature probe.
Locate the temperature probe.
11. The temperature probe can be removed
through the bottom of the frypot as follows:
Ensure the two-pin connector has been
removed from the probe wiring harness
(step 4, above). Remove the harness
insulation. The probe can be pulled through
the frypot from the bottom (complete step
7, above, prior to removing probe).
12. Carefully remove the probe from the frypot.
As the probe is removed, tilt the probe at an
angle to facilitate removal (curved probes
only).
After removing the probe mounting hardware, the
temperature probe can be removed through the
bottom of the frypot. Retain the mounting hardware
for reassembly.
13. Follow the steps on the next page to install
the new temperature probe.
IMPORTANT: When installing new probe, use
Loctite PST567 or equivalent pipe thread sealant
on threads and ensure probe is positioned properly
with the mounting hardware installed prior to
tightening the compression nut. Once tightened,
the probe cannot be repositioned.
1-14
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Installing the New Temperature Probe:
1. Feed the probe wire through the probe nipple from the top side of the frypot.
2. Loosely install the bladder nut.
3. Mount the probe into the mounting hardware.
4. Tighten the bladder nut.
5. Install the insulation and plug.
1.7.4 Replacing the High-limit Thermostat
1. Turn fryer off and drain oil from the frypot. Allow the frypot to cool completely before
proceeding.
2. Perform steps 1-4 in Section 1.7.1, Replacing the Computer.
3. Remove fryer door for easier access to the temperature probe. First, remove top hinge from
bracket. Then, lift door off bottom hinge pin.
4. Remove two screws securing the high-limit
mounting-bracket. Do not disconnect wires from
high-limit at this time.
5. Loosen and completely unscrew the compression
Remove screws (arrows) securing high-limit to
fryer.
nut, then the pass-through nut on the frypot bottom.
Proceed to the next step before removing high-limit
from frypot.
Compression nut unscrewed. Unscrew
the pass-through nut (arrow).
1-15
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.4 Replacing the High-limit Thermostat (cont.)
6. Locate the high-limit probe inside the frypot.
Remove the high-limit probe mounting hardware.
Retain mounting hardware for installation of new
temperature probe
7. Carefully pull high-limit capillary tube and bulb out
of the frypot from the bottom.
Remove high-limit capillary tube and bulb
from the bottom of the frypot.
Locate the high-limit probe.
1-16
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.4 Replacing the High-limit Thermostat (cont.)
8. Mark and disconnect wires at the high-limit in the
component box.
9. Remove high-limit from fryer by pulling the
capillary tube and bulb through the component box
opening (arrow). This may require removal of the
control panel frame.
10. Reverse the above steps for high-limit installation.
IMPORTANT: When installing new high-limit,
ensure the capillary tube and bulb are positioned
properly with the mounting hardware installed prior
to
tightening the compression nut. Once tightened, the
capillary tube cannot be repositioned.
Mark and disconnect high-limit wiring
(arrows). Reconnect wires to the same
terminals on the replacement high-limit.
Component box opening (arrow).
1-17
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.5 Replacing Rocker Switches
1. Disconnect the fryer from the electrical supply.
2. If switches are located in a control box within the fryer, remove the six screws securing the
switch panel to the control box. Do not allow the switch panel to hang from the switch wiring
harness or other wires. (Figure B)
Remove six screws.
Remove the screws holding the plate in place, then depress the
clips on each end to remove the switch.
FIGURE B
1-18
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