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*
NOV 2013
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 AUTHORIZED SERVICER.
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 Manitowoc Food Service
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
APPENDIX: Pre-Common Cabinet HD65 Parts List..................................................2-43
Flue Cap
Top Cap
Electronic
Operating
Thermostat
Oil Return Handle
Gas Valve
Filter Unit
configuration and date of manufacture.
Basket HangerFrypot
Drain Valve Handle (Red)
Oil Return Handle (Yellow)
Drain Flush Handle (Blue)
Burners
Note: The appearance of your fryer may differ slightly from that shown depending upon
Controller
Drain Tubes
FINDING YOUR WAY AROUND THE DEAN HIGH EFFICIENCY DECATHLON
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 cast-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.
GAS INFORMATION (Altitudes of 2000 feet or less)
MODEL
HD50G 95
HD60/63/65G 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 controller 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
controller 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, Compu-Fry controllers, 3-Lane
controllers or FAST controllers.
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 (controller-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/controller 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 826-2434 is used; in units
configured with a manually lit pilot (non-electronic ignition), P/N 826-2425 is used.
1-3
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
Interface Boards (cont.)
106-3729 (24V): These boards are used in HD fryers equipped with Thermatron control systems.
THERMATRON BOARD P/N 106-3729
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 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 four relays. K3 is the heat relay and K4 is the latch relay. K1 and K2 are only
used in "dual" or "split" pot applications.
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 controller 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
controller 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 controller.
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 Service
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 wire 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 setscrews and slowly turning the knob to match the
temperature reading of the thermometer. Tighten the setscrews, 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 Controller
1. Disconnect the fryer from the electrical
supply.
2. Unscrew the two controller panel screws.
The controller 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 controller.
4. Remove the controller by lifting it from the
hinge slots in the fryer control panel frame.
5. Reverse the procedure to install a new
controller.
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
1.7.2 Replacing Control Box Components including Ignition Module, Interface
Board, Transformers, etc.
1. Disconnect the fryer from the electrical
supply.
2. Unscrew the two controller panel screws.
The controller panel is hinged at the bottom
and will swing open from the top.
3. Locate the component to replace.
4. Mark the location of the wires to facilitate
easy reassembly.
5. Disconnect the wires.
6. Remove the screws attaching the component
to the control box.
7. Reverse steps to complete the replacement
and return the fryer to service.
1-12
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Controller-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.
1-13
)
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Controller-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.
9. Loosen and unscrew the compression nut
Remove burners to gain access to temperature
probe (arrow).
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
.
1-14
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.3 Replacing the Temperature Probe; Controller-equipped Fryers (cont.)
10. Locate the temperature probe inside the
frypot.
11. The temperature probe can be removed
through the bottom of the frypot as follows:
Ensure the two-pin connector has been
Locate the temperature probe.
removed from the probe wiring harness
(step 4, above). Carefully bend the two tabs
(one forward and toward the back) so the
probe will clear the tabs. 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.
1-15
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. Carefully bend the two tabs back into alignment to
retain probe.
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 Controller.
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.
Remove screws (arrows) securing high-limit to
fryer.
5. Loosen and completely unscrew the compression
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).
1-16
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.
Carefully bend the outer tab at the rear of the high
limit until the high limit can slid back and out of the
retaining bracket.
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.
1-17
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 tab back in alignment 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).
1-18
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.
1-19
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.5 Replacing Rocker Switches (cont.)
3. Depress the retaining clips (see illustration below) and push the switch out of the slot. If there is
a switch-guard present, retain it for installation of the replacement switch.
Depress clips on each
side to remove switch
from control panel.
4. Remove wires one at a time from the switch being removed and connect to the replacement
switch until all wires are transferred.
5. Reverse the above steps for reassembly.
1.7.6 Replacing the Gas Valve
DANGER
Drain the frypot or remove the handle from the drain valve before proceeding further.
1. Disconnect fryer from electrical and gas supplies.
2. Disconnect the wires from the gas valve terminal block, marking each wire to facilitate
reconnections. For 120VAC gas valves, disconnect the black wire from the high-limit, then
remove the bobtail connecting the white wire.
3. Remove the high-limit thermostat wire from the gas valve pilot coil (all but 120 VAC valves).
4. Remove the pilot gas line fitting from the gas valve.
5. Remove the pipe union collars to the left and right of the gas valve and remove the valve.
6. Remove the pipefitting from the old gas valve and install on the replacement valve, using Loctite
PST567 or equivalent pipe thread sealant on threads. Do not apply sealant to the first two pipe
threads. Doing so will clog and damage the gas valve.
7. Reverse steps 1-5 to install the replacement gas valve.
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CHAPTER 1: SERVICE PROCEDURES
1.7.7 Replacing the Pilot Assembly
1. Remove the pilot tubing from the bottom of the pilot assembly.
2. If the pilot is an electronic ignition pilot, disconnect the ignition cable and the sense wire.
3. Remove the pilot mounting screw(s) from the pilot mounting bracket and remove the pilot.
4. Reverse the procedure to replace the pilot assembly.
NOTE: The above procedure is applicable to standing pilot, electronic ignition, and
trailing pilot assemblies.
1.7.8 Adjusting the Ignitor Assembly
1. Disconnect the fryer from the electrical supply.
2. Remove the outer cover plate by removing two screws as
shown in Figure 1.
3. Remove the air shutter plate if applicable by removing the
four screws in the four corners as shown in Figure 2.
Figure 1
4. Gently bend the ignitor spark probe until the gap distance is
approximately ¼” inch between the two points as shown in
Figure 3.
5. Reverse steps to reassemble.
Figure 2
1.7.9 Replacing the Frypot
1. Open fryer doors and remove filter pan (if applicable). Ensure controller and
all power switches are off. Drain and dispose of or store oil from all frypots
prior to moving fryer.
Figure 3
DANGER
Hot cooking oil will cause severe burns. Never attempt to move this appliance when
filled with hot cooking oil or to transfer hot cooking oil from one container to
another.
2. Turn gas valve off, then turn gas off at supply valve or meter. Disconnect supply line from gas
manifold at rear of fryer.
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CHAPTER 1: SERVICE PROCEDURES
NOTE: If restraints are installed on the fryer, disconnect restraints prior to disconnecting
the gas supply line.
3. Unplug fryer from electrical supply source.
4. Remove fryer door for easier access to the temperature probe. First, remove top hinge from
bracket. Then, lift door off bottom hinge pin.
5. Remove the basket hanger from the flue cap by lifting
up and off of fryer. Some units may have a built-in
flue deflector on the basket hanger. Units with basket
lifts will require the removal of the lift arms prior to
removing the basket hanger.
6. Remove the top cap. It is held in place by one screw
on each side of the fryer. If the fryer has a controller
on the front, the top cap may also be held in place
Removing the basket hanger from the flue cap.
by two screws on the front of each pot. FPHD65
units may have two screws on each end of the top cap.
7. Remove the joiner strips on either side of the frypot. Be
careful not to bend the joiner strip during removal.
Removing the joiner strip.
8. Remove back panels of the fryer. There
may be both upper and lower panels and
several screws secure them. Screw
location and orientation will vary
according to fryer model.
Typical screw locations on the back panel (may vary by
model
.
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CHAPTER 1: SERVICE PROCEDURES
1.7.9 Replacing the Frypot (cont.)
9. Remove screw securing brace (and back panel) to the
flue cap. Support the brace with hand while removing
screw to prevent brace from falling away. Remove
brace and set aside for reassembly.
Removing brace holding back panel to flue
cap.
10. Remove screws securing flue cap to frypot (access from above; a nut-driver with an extension or
long screwdriver is required). Use care not to drop the screws into the flues. If this happens, the
screws can be retrieved when the flue is removed (Step 12). Use a screwdriver or similar tool to
free flue cap from frypots. Remove flue cap by lifting up and off of fryer.
Remove the screws (arrow) securing the flue cap
to the frypot on the long edge. There will be two or
three screws depending on configuration. (view
from above, looking down into flue)
11. Remove gas manifold pipe for access to gas
manifold shield by disconnecting at the unions.
Ensure gas supply is shut off and supply line is
disconnected prior to removing. Set gas
manifold aside. Remove screws securing gas
manifold shield. Remove shield to access oilreturn plumbing components connected to the
frypots.
NOTE: For units without built-in filtration
skip the steps pertaining to removal and
replacement of oil-return plumbing.
1-23
Remove the screws (arrows) securing the flue
cap to the frypot on the short edge. There will be
two screws on each end of the flue. (view from
above, looking down into flue)
Removing gas manifold shield.
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.9 Replacing the Frypot (cont.)
12. Remove screws securing flue to frypot (access
from above; a nut-driver with an extension or
long screwdriver is required). Retrieve any
screws dropped into the flue during removal of
the flue cap and frypot bracket.
13. Remove the clevis clip and oil return handle
rod from the oil return valve at the rear of the
fryer. Slip Section A of the clevis clip off of
the oil return handle by pulling up on the rings.
Slide the oil return handle out of the bracket
and Section B of the clevis clip. Repeat for the
drain flush handle (if applicable).
14. Loosen the two screws on the front of the oil
return handle bracket at the front of the fryer.
Remove the bracket and handle and set aside
for reassembly. Repeat for the drain flush
handle (if applicable).
Removing bolts (arrows) securing flue to
frypot.
Disconnect oil-return handle from clevis clip
and valve.
Oil-return handle bracket and screws.
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CHAPTER 1: SERVICE PROCEDURES
1.7.9 Replacing the Frypot (cont.)
15. Remove the drain manifold. Only the drain
tubes directly blocking the frypot being
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.
- 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.
16. Remove the nipple attaching the oil return line
to the bottom of the frypot at the rear of the
fryer using a wrench. This may require
removal of other pieces of the oil return
manifold, as needed.
17. Remove the burner shield by loosening the
screw on each end.
18. Remove the burners to gain access to the
temperature probe and to ease removal. Remove
one burner at a time. Loosen the two screws
attaching the burner to the burner rail. Slide the
burner up until the heads of the two screws reach
the round key holes and lean it slightly toward
from the frypot to clear the burner rail and 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.
19. Remove the burner rail when all burners have
been uninstalled. Loosen the screws on each
end of the rail and set it aside.
Valve
Stud &
Boot
Nut
Clamp
Strap
Drain manifold parts.
Oil-return nipple, burner shield, and burner rail.
Remove drain valve handle and
burners from fryer.
1-25
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.7.9 Replacing the Frypot (cont.)
20. If the fryer is equipped with drain-valve microswitches, mark the wires and microswitch
terminals, then disconnect wires from the switch. Secure the wires to prevent damage when
frypot is removed.
Left: Microswitch wires marked for removal (ensure
microswitch terminals are marked the same as the wires
removed). Right: Microswitch mounted to drain valve.
21. Remove the drain valve handle by loosening
the drain valve nut and removing attached
hardware. Depending on placement and
configuration, the valve may be turned in a
different direction than pictured.
22. Remove the pilot assembly from the frypot.
Remove the drain valve nut and attached
hardware.
- If trailing pilot, disconnect the pilot supply
line from the trailing pilot valve on the
burner manifold.
Remove the mounting screw(s) to detach the pilot
assembly from the pilot bracket.
Remove the pilot assembly from the pilot bracket
on the fr
ot.
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1.7.9 Replacing the Frypot (cont.)
23.Remove the temperature probe from frypot. (See Section 1.7.2, Replacing the Temperature
Probe: Controller–equipped Fryers, for specific instructions.)
24. Remove the high-limit from the frypot (see Section 1.7.3, Replacing the High-limit Thermostat).
25. Remove bolts from brackets securing burner
manifold to frypot. Leave the manifold in
place.
Removing bolts (arrows) from burner manifold
support brackets (both sides). Leave the burner
manifold in place after removing bolts.
26. Using a sharp knife or box-cutter, cut the
silicon seal around the frypot. Use care not
to scratch stainless steel surfaces.
27. Ensure wires and tubes will not be caught on
the frypot when it is removed.
Cutting frypot seal prior to frypot removal.
28. Remove frypot from fryer by lifting up and
out.
Lifting frypot from fryer.
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CHAPTER 1: SERVICE PROCEDURES
1.7.9 Replacing the Frypot (cont.)
29. Position the frypot upside down on a
suitable work surface.
30. Record position of the valve stem in
relation to the frypot prior to removing
the drain valve. If equipped, remove
microswitches and mounting hardware
from valve prior to removal. Using a
suitable wrench, remove the drain valve
from the frypot. Use Loctite PST567
sealant when installing drain valve on
replacement frypot.
31. Remove all other hardware and
accessories from the frypot.
32. Reverse the above steps to install the
replacement frypot.
33. Add a bead of silicon around the edges of
the new frypot, sealing the seam where
the frypot and the cabinet meet. Only do
this when the frypot is completely
installed.
Removing drain valve from frypot.
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.8 Troubleshooting and Problem Isolation
Because it is not feasible to include every issue that might occur, this section is intended to provide
technicians with a general knowledge of the broad problem categories associated with this
equipment and the probable causes of each. With this knowledge, the technician should be able to
isolate and correct any problem encountered.
You are likely to encounter problems in these broad categories:
1. ignition failure,
2. improper burner function,
3. improper temperature control,
4. improper controller function,
5. improper filtration function,
6. frypot leakage, and
7. basket lift malfunction.
The probable causes of each category are discussed in the following sections. Troubleshooting
guides are included in Section 1.9 to assist in identifying some of the more common problems.
1.8.1 Ignition Failure
Ignition failure occurs when the ignition module fails to sense a flame within the 60-second time
delay period and locks out. Turn the fryer off, locate and fix the problem, then turn fryer back on to
clear the module lock.
There are three primary reasons for ignition failure, listed in order of probability:
1. The gas and electrical power supplies,
2. The electronic circuits, or
3. The gas valve.
The Gas and Electrical Power Supplies
The main indicators that the gas or electrical power supply is the cause of ignition failure are as
follows: an entire battery of fryers fails to light, and/or there are no indicator lights illuminated on
the fryer experiencing ignition failure. Verify that the quick disconnect hose is properly connected,
the fryer is plugged in, the main gas supply valve is open, and the circuit breaker for the fryer
electrical supply is not tripped.
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CHAPTER 1: SERVICE PROCEDURES
1.8.1 Ignition Failure (cont.)
The Electronic Circuits
If gas and electrical power are supplied to the fryer, the next most likely cause of ignition failure is a
problem in the 24 VAC circuit of fryers equipped with electronic ignition systems, or in the pilot
system for those without electronic ignition. If the fryer is equipped with a SUFF/UFF filtration
system, verify that the drain valve is fully closed. (The valve is equipped with a microswitch that
must be closed for power to reach the gas valve. The valve handle can appear to be closed when the
microswitch is open.) If the valve is fully closed, or the fryer does not have a filtration system, refer
to the troubleshooting guides in this chapter.
The Gas Valve
If the problem is not in the 24 VAC circuit or pilot system, it is most likely in the gas valve. Before
replacing the gas valve, refer to the troubleshooting guides in this chapter.
1.8.2 Improper Burner Function
In these instances, the burner ignites but exhibits abnormal characteristics, such as popping,
incomplete lighting of the burner, fluctuating flame intensity, and flames “rolling” out of the fryer.
Popping indicates delayed ignition. In most cases, the main gas valve is opening, but the burner is
not immediately lighting. When ignition does take place, excess gas ignites rapidly rather than
smoothly.
The primary causes of popping are:
1. low or fluctuating gas pressure,
2. misdirected or weak pilot flame,
3. clogged burner orifices,
4. clogged burners,
5. inadequate make-up air,
6. heat damage to the controller or ignition module,
7. an out-of-adjustment igniter or broken ignition wire,
8. a defective ignition module,
9. missing or misaligned burners,
10. clogged vent tube (causing incorrect gas pressure), or
11. make-up air is blowing down the flue.
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1.8.2 Improper Burner Function (cont.)
If popping occurs only during peak operating hours, the problem may be incorrect or fluctuating gas
pressure. Verify that the incoming gas pressure (pressure to the gas valve) is in accordance with the
appropriate requirements listed in the Installation and Operation manual that came with the fryer,
and that the pressure remains constant throughout all hours of usage. Refer to Adjusting Burner Manifold Pressure in Section 1.4 if burner manifold pressure is suspected of being incorrect.
If popping is consistent during all hours of operation, verify that the pilot is properly positioned
above the burner orifice and that the pilot pressure is correct. Correct pilot pressure is indicated by a
flame 1 to 1½" long. Also verify that igniter is properly adjusted (electrode tip 1/8" from pilot hood
corner). Refer to Section 1.5 for pilot adjustment procedure.
Clogged burners or burner orifices are also likely causes of delayed ignition. Clogged burners are
indicated by uneven flame or partial flame on the burner face. Clogged orifices are indicated by no
flame.
Another cause of popping is an insufficient air supply or drafts that are blowing the pilot flame away
from the burner. Check for "negative pressure" conditions in the kitchen area. If air is flowing into
the kitchen area, this indicates that more air is being exhausted than is being replenished and the
burners may be starved for air.
If the fryer’s gas and air supplies are okay, the problem most likely is with one of the electrical
components. Examine the ignition module for signs of melting, distortion, or discoloration due to
excessive heat build-up in the fryer. Also, examine the controller for the same conditions. This
condition usually indicates improper flue performance. A melted or distorted ignition module is
automatically suspect and should be replaced, but unless the condition causing excessive heat in the
fryer is corrected, the problem is likely to recur.
Next, ensure the ignition wire is tightly connected at both ends and examine it for obvious signs of
damage. Again, if damage is due to excessive heat in the fryer, that problem must also be corrected.
Check for proper operation by disconnecting the wire from the igniter, inserting the tip of a
screwdriver into the terminal, and holding it near the frame of the fryer as the power switch is placed
in the "ON" position. A strong, blue spark should be generated for at least 60 seconds.
DANGER
MAKE SURE YOU ARE HOLDING THE INSULATED HANDLE OF THE SCREWDRIVER
AND NOT THE BLADE. THE SPARKING CHARGE IS APPROXIMATELY 25,000
VOLTS.
Ensure the gap setting of the igniter is correct (electrode tip 1/8" from pilot hood corner).
1-31
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.8.2 Improper Burner Function (cont.)
Burners lighting on the left side only may be caused by a trailing pilot problem (four- and five-tube
frypots) or improper burner manifold pressure.
Fluctuating flame intensity is normally caused by either improper or fluctuating incoming gas
pressure, but may also be the result of variations in the kitchen atmosphere. Verify incoming gas
pressure in the same way as for "popping,” discussed in the preceding paragraphs. Variations in the
kitchen atmosphere are usually caused by air conditioning and/or ventilation systems starting and
stopping during the day. As air conditioning/ventilation systems start and stop, the pressure in the
kitchen may change from positive or neutral to negative, or vice versa. Changes in airflow patterns
may affect flame intensity.
Flames "rolling" out of the fryer are usually an indication of negative pressure in the kitchen and
make up air blowing down the flue. Air is being sucked out of the fryer enclosure and the flames are
literally following the air. If negative pressure is not the cause, check for high burner-manifold gas
pressure in accordance with the procedures in Section 1.4. An obstructed flue, which prevents the
fryer from properly exhausting, may also be the cause.
Excessively noisy burners may indicate that the burner gas pressure is too low, the tube diffusers are
defective or burned out, or it may simply be that the gas valve vent-tube is blocked (if applicable). If
the gas pressure is correct, the tube diffusers are intact and in good condition, and the vent-tube is
unobstructed (if applicable), the gas valve regulator is probably defective.
1.8.3 Improper Temperature Control
Temperature control is a function of several interrelated components, including the melt cycle. Each
must operate correctly. The principal component is the temperature probe. Depending upon the
specific configuration of the fryer, other components may include the interface board, the
controller/controller itself, and the ignition module.
Improper temperature control problems can be categorized into melt cycle problems and failure to
control at setpoint.
In fryers equipped with a Thermatron, the problem will be with the thermostat. Possible causes are
that the thermostat is out of calibration or defective. Refer to Section 1.6 for instructions on
calibrating the thermostat.
In fryers equipped with controllers, the problem may be with the temperature probe, the interface
board, or the controller. Refer to the troubleshooting guides in this chapter.
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CHAPTER 1: SERVICE PROCEDURES
1.8.4 Improper Controller Function
Sensitivity or "Stretch Time." Sensitivity—or stretch time—is a programmable feature that
increases the cook time countdown based on variations in the oil temperature from the setpoint (e.g.,
when cold product is dropped into the oil, causing the oil temperature to drop).
The sensitivity for each product button has 10 settings (0 through 9). A "0" sensitivity setting will
disable the feature (no change in cooking time), while a nine will provide the highest sensitivity or
the most change. The correct sensitivity for any product is based on the product type, its density, the
setpoint temperature, and the customer’s own requirements.
Common Controller Complaints. Most problems concerning controllers have to do with
programming them. There are four common complaints. The complaints, their causes, and
corrective actions are as follows for the Dean Compu-Fry controller:
1. Fryer constantly displays "".
Cause: Setpoint incorrect or missing.
Corrective Action: Press 1 6 5 0, enter the correct setpoint using keypad, then press and
then this to lock in the setpoint.
2. Temperature is displayed in Celsius.
Cause: Controller is programmed to display in Celsius.
Corrective Action: Press 1 6 5 8.
3. Temperature is constantly displayed.
Cause: Controller is programmed for constant temperature display.
Corrective Action: Press 1 6 5 L.
4. Controller times down too slowly or too quickly.
Cause: Controller is compensating for oil temperature via the sensitivity setting.
Corrective Action: Reprogram sensitivity setting for each product in accordance with
programming instructions in the Compu-Fry Operation and Programming manual, P/N 819-
5865.
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CHAPTER 1: SERVICE PROCEDURES
1.8.5 Improper Filtration Function
The majority of filtration problems arise from operator error. One of the most common errors is
placing the filter paper on the bottom of the filter pan rather than over the filter screen. Anytime the
pump is running, but no oil is being filtered, check the installation and size of the filter paper. Verify
that the O-rings on the slip-connection are in good condition. Missing or worn O-rings allow the
pump to suck air, decreasing its efficiency.
If the pump motor overheats, the thermal overload will trip and the motor will not start until it is
reset. If the pump motor does not start, press the red reset switch located on the rear of the motor.
Also, reset the filter circuit breaker located under the fryer control panel. If the pump then starts,
something caused the motor to overheat. The pump most likely overheated for one of the following
reasons:
• Shortening was solidified in the pan or filter lines.
• Multiple frypots were filtered one-after-another. Allow the pump to cool for 30 minutes before
using again.
• The operator attempted to filter unheated oil. Cold oil is thick and will cause the pump motor to
work harder and overheat.
If the motor runs, but the pump does not, the pump is blocked. Incorrectly sized or installed paper
allows food particles and sediment to pass through the filter pan and into the pump. When sediment
enters the pump, the gears bind and cause the motor to overheat, tripping the thermal overload.
Solidified shortening in the pump will produce the same result. A pump seized by debris or hard
shortening must be disassembled, cleaned, and reassembled in the following manner:
1. Disconnect power to the filter system.
2. Remove the front cover of the pump to access the gears inside, if the pump is accessible while
still inside the cabinet. If the front cover is not accessible, the pump must be removed from the
pump motor (disconnect input/output plumbing from the pump prior to removing it). Remove
three setscrews to disengage the pump from the motor.
3. Prior to reassembly, the inside housing must be clean and free of any sediment or debris. If not,
the gears will bind again after reassembly.
Remove these bolts to
remove pump cover.
NOTE:
The pump cover in
current production units
is held in place by four
(4) bolts.
Remove debris or hardened
shortening to free gears.
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.8.5 Improper Filtration Function (cont.)
Incorrectly sized or installed paper will allow food particles and sediment to pass through and clog
the suction tube on the bottom of the filter carriage. Particles large enough to block the suction tube
may indicate that the crumb tray is not being used.
Pan blockage can also occur if shortening is left in the pan and allowed to solidify. Heater strips (if
equipped) on the oil return plumbing are designed to prevent solidification of shortening left in the
plumbing. Heater strips will not melt or prevent solidification of shortening in the pan.
Remove blockage by forcing it out with an auger or drain snake. DO NOT use compressed air or
other pressurized gases to force out the blockage.
The SUFF/UFF filtration systems use microswitches attached to handles for each vat. They are
wired in parallel and provide the 24 VAC required to activate the pump relay coil when the handles
are moved to the ON position. The activated pump relay coil pulls the pump motor switch in,
supplying power to the pump motor.
Filter systems equipped with oil-return heater tape are wired into the 120 VAC source, and remain
energized as long as the unit is plugged in and power remains constant. Heater tape should receive
constant power all day and all night; it should not be connected to a power supply that is turned off
at night.
1.8.6 Frypot Leakage
Frypot leaks are almost always due to improperly sealed high-limit, thermostats/temperature probe
and drain fittings. When installed or replaced, each of these components must be sealed with Loctite
PST567 sealant or equivalent to prevent leakage. In very rare cases, a leak may develop along one
of the welded edges of the frypot, or where the tube is welded to the frypot. When this occurs, the
frypot must be replaced.
If the sides or ends of the frypot are coated with oil, the most likely cause is spillage over the top of
the frypot rather than leakage.
Frypot locations (indicated by arrows)
where potential leaks could occur.
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.8.7 Improper Basket Lift Function
Bell-Crank Basket Lifts
Most High Efficiency Decathlon Series gas fryers are
equipped with a bell-crank style basket lift. A cam and a
bell crank are connected to the basket lift arm by a flat metal
link. The cam is attached to a drive motor. The motor rotates
the cam, raising or lowering the lift arm linked to the bell
crank. A roller-activated microswitch is used to limit travel.
When the roller in the microswitch is in contact with the cam,
the motor is energized. As the cam rotates, the roller loses
contact with the cam and the motor power circuit is broken,
de-energizing the motor.
Timing circuitry in the controller initiates and stops
basket lift operation. When the product button is pressed,
the timing circuitry activates a coil in the basket lift relay
to supply power to the motor. The microswitch stops the
motor at the lift’s lower travel limit and the switch
contacts are reversed. At the end of the programmed
cooking time, the timing circuit activates the coil once
more and the lift rises until the microswitch again loses
contact with the cam, opening the motor power circuit and
stopping the motor.
Problems with the bell-crank basket lift system can be
grouped into two categories:
• binds and jams or
• motor and gear wear.
Binds and jams. Noisy, jerky, or erratic lift movement is
usually due to lack of lubrication. Apply a light coat of
Lubriplate or similar lightweight white grease to the
connection points to correct the problem.
Motor Problems. If power is reaching the motor but the
motor fails to run, the motor is burned out and must be
replaced.
Back view of bell-crank basket lift.
Bell-crank basket-lift arms.
1-36
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.9 Troubleshooting Guides
The following troubleshooting guides are intended to assist service technicians in quickly isolating
the probable causes of equipment malfunctions by following a logical, step-by-step process.
PROBLEM
Burner will not ignite.
Light in ON/OFF switch
is not illuminated.
A. ON/OFF switch is off. A. Turn ON/OFF switch on.
PROBABLE CAUSES CORRECTIVE ACTION
ON/OFF switch is on,
ut the switch light is not
illuminated.
ON/OFF switch is on and
the switch light is
illuminated, but there is
no output to gas valve.
No burner flame.
A. No voltage at switch. A. Ensure line voltage is present at the
switch.
A. Drain microswitch circuit (filter-
equipped units) is open.
B. Voltage is present at ON/OFF switch,
but continuity of the switch in ON
position is not "0.”
C. Continuity of thermostat is not "0" (oil
temperature is at least 15°F below
electronic thermostat setting).
D. Gas valve is suspect. D. Go to "No burner flame" section.
C. Gas valve is known to be good, but
there is not 24 VAC (120VAC on
systems so equipped) at the gas valve
terminals.
A. Ensure drain valve is fully closed and
microswitch is functioning. Replace
microswitch if defective.
B. ON/OFF switch is defective. Replace
switch with a known working switch.
C. Thermostat(s) is/are defe ctive.
Replace defective thermostat with a
known working thermostat.
D. Inspect electronic sensor (while still in
frypot) for damage. Replace if bent,
dented, or cracked. Inspect leads for
fraying, burning, breaks, and/or kinks.
If found, remove and replace
thermostat(s). Remove leads from
terminal block, allow oil to cool 15°F
(8°C) below thermostat setting, and
check continuity. If continuity is not
"0,” then thermostat has failed.
Replace thermostat(s).
Fluctuating or erratic
lighting of burner flame.
Electronic/operating
thermostat will not adjust
to correct temperature.
A. Incoming gas supply pressures are not
within range [Natural- 6-14" W.C.
(1.49-3.49 kPa); Propane- 11-14"
W.C. (2.74-3.49 kPa)]
approximately 30 minutes to force air
from gas manifold and lines.
A. Calibrate electronic/operating
thermostat. Replace if calibration is
not possible.
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HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.10 Wiring Diagrams
Note: The diagrams in this section depict wiring as of the date of manual publication.
It may not reflect design changes made to the equipment after publication. Refer to
the wiring diagram affixed to the unit when actually troubleshooting this equipment.
1.10.1 Controller Dean Common Cabinet
805-1545 B
1-38
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.10.2 Wingstreet Common Cabinet
805-1599 B
1-39
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.10.3 BK1814 Main Wiring Diagram prior after Sep. 2010
1-40
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.10.4 BK1814 Main Wiring Diagram prior to Sep. 2010
2.1 High Efficiency Common Cabinet Decathlon (HDC) Primary Components
2.1.1 Decathlon HD50 Primary Components
18
3
15
10
12
4
6
5
2
9
1
7
8
14
22
13
11
17
16
19
20
21
2-1
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
Each section is labeled by size (e.g., D50) and parts are not interchangeable between different sized fryers. The parts in this manual
are for use on Common Cabinet style fryer.
If you have any questions, call the Frymaster and Dean 24-Hour Service Hotline, 1-800-551-8633.
2.1.1 Decathlon HD50 Primary Components
ITEM PART # DESCRIPTION
1 826-3009 Frypot - S/S (Use 108-3638 for Energy Star Frypot Assy. )
2
3
* 810-0705
* 810-0703
4 230-4900 Diffuser Assembly (Use 230-6887 for Energy Star)
221-0012 Side Panel, Left Side with Hole (unit exterior)
211-8078 Side Panel, Left Side (unit exterior)
231-2311 Side Panel, Left Side (Single 65)
11
222-0012 Side Panel, Right Side with Hole (unit exterior)
212-8078 Side Panel, Right Side (unit exterior)
232-2311 Side Panel, Right Side (Single 65)
823-5789Side Panel, with Splash Panel (565)
12
220-2353 x2 (2-, 4-, 5-, and 6-battery)
220-0668 x3 (5-battery)
220-2354 x2 (2-, 4-, 5-, and 6-battery)
220-0667 x3 (5-battery)
221-0012 Side Panel, Left Side with Hole (unit exterior)
211-8078 Side Panel, Left Side (unit exterior)
231-2311 Side Panel, Left Side (Single 65)
11
222-0012 Side Panel, Right Side with Hole (unit exterior)
212-8078 Side Panel, Right Side (unit exterior)
232-2311 Side Panel, Right Side (Single 65)
823-5789Side Panel, with Splash Panel (565)
12
220-9325 Single
220-9485 Double (2-, 4-, 5-, and 6-battery)
220-9849 Triple (3-, and 5-battery)
13 230-1478 Connecting without pins
* 823-5961Connecting with pins (same as 230-1478 but with pins)
13a 823-8776 Connecting without pin and without holsters
* 823-7278Connecting with pins and without holsters (same as 823-8776 but with pins)
13b 823-8829 Connecting with single holster on right
13c 823-7917 Connecting with double holsters
14
824-2317 Single
824-2318 x2 (2-battery, 5-battery and 6-battery )
824-2319 x3 (3-battery and 5-battery)
823-2320 x4 (4-battery and 6-battery)
15
Flue Cap
824-2310 Single
824-2314 x2 (2-battery, 5-battery and 6-battery )
824-2315 x3 (3-battery and 5-battery)
* 823-5801Basket Hanger, Chili’s Single System, 6" Splash Guard
* 823-5856 Splash Guard (2-, 4-, 5-, and 6-battery)
19 810-1494Caster, Plate-mount 4" without Brake
20 810-2406Caster, Plate-mount 5" without Brake
* 810-0944Caster, Plate-mount 3" with Brake
* 807-0154Cordset, 10’ Power
21 810-2411Leg, Single Bolt Mount (black)
* 810-3169Leg, 4 Bolt Mount, Package (4 per set)
22 823-3248Leg, Single Bolt Mount Support Assembly,
23 Weldment, Vent
823-2309
823-2311
823-2312
823-2313
24 108-4284 Side Assembly, Frypot with Insulation Left
25 108-4285 Side Assembly, Frypot with Insulation Right
26 220-9906 Box, Burner Air
27 240-0319 Shutter, Burner
28 220-8858 Door, Ignitor
29 220-8865 Door, Ignitor Access
30 240-0320 Shutter, Long Burner
31 108-4062 Flue Assembly 90°
* 108-5788 Cordset, 10’ Power
* Not illustrated.
Single and 5-battery
2-battery, 5 battery and 6-battery
3-battery and 5-battery
4-battery and 6-battery
2-11
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.1.5 Y/KSCF/C/HC Primary Components
15
10
12
18b
4
6
5
2
14
9
18a
1
13a
13b
318
7
8
11
22
19
13
23
16
17
20
21
2-12
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.1.4 Y/KSCF/C/HC Primary Components (cont.)
ITEM PART # DESCRIPTION
1 823-6138 Frypot – S/S (YSCFHC 14)
* 106-9637 Frypot – S/S (YSCFHC 18)
* 823-6367 Frypot – S/S (Y/KSCF/C/HC 18) India without hooks
* 823-7879 Frypot – S/S (Y/KSCF/C/HC 18) India with hooks
2
3
* 810-0705Tube, Pilot Gas Supply, 1⁄4" x 23" (one-piece gasline)
* 810-0703Tube, Pilot Gas Supply, 1⁄4" x 17½" (one-piece gasline)
4 230-4900Diffuser Assembly (use 230-6888 for 8 row burner) (use 230-7711 for India)
5
6 810-3356 Burner, High Efficiency
* 810-2151 Burner, Left
* 810-2149 Burner, Center
* 810-2150 Burner, Right
7 220-5152Burner Mounting (use 200-2738 for India)
8 200-8748 Heat shield
9
230-8757 Basket Hanger, Triple Keyholed
19 810-0356Caster, Plate-mount 5" without Brake (use 826-1138 for India)
20 810-0357Caster, Plate-mount 5" with Brake
* 106-7649 Cordset, 10’ Power
21 810-2411Leg, Single Bolt Mount (black)
* 810-3169Leg, 4 Bolt Mount, Package (4 per set) (use 810-3168 for India)
22 823-3248Leg, Single Bolt Mount Support Assembly
* Not illustrated.
►►►See Orifices, Section 2.2
See Additional Components and Controllers, Section 2.3
►►►See Drain Components, Section 2.4
See Additional Components and Controllers, Section 2.3
Side Panel, Left Side (unit exterior) (use 221-3272 for India) (use 231-8145 for SS
318G) (use 221-8141 318G Painted)
Side Panel, Right Side (unit exterior) (use 222-3272 for India) (use 232-8145 for
SS 318G) (use 222-8141 318G Painted)
Top Caps
Flue Caps
218 (use 823-6880 for India before Feb. 11) (use 823-7875 for India after Feb.
11)
2-13
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.1.6 BK1814 Primary Components
2-14
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.1.5 BK1814 Primary Components (cont.)
ITEM PART # DESCRIPTION
1 823-7554 Frypot (BK50)
* 823-6997 Frypot (BK60)
2
3
* 810-0703Tube, Pilot Gas Supply, 1⁄4" x 17½" (one-piece gas line)
4 230-6887 Diffuser (Baffle) Assembly
5
6 810-3356 Burner, High Efficiency Cast
7 220-5152 Burner Mounting
8 200-8748 Heat shield
9
* 810-0691 Vent Tube
10 231-2060 Side Panel, Left Side (unit exterior)
* 231-6259 Side Panel, Left Side BK RAM Inner
11 232-2060 Side Panel, Right Side (unit exterior)
* 232-6259 Side Panel, Right Side BK RAM Inner
12 Back Panels
220-6434 60/50 BK60/50/RAM/60 (use 220-6432 for RAM/60 - RAM on right)
220-7150 50/60 BK60/RAM/50/60 (use 220-7151 for 60/RAM - RAM on left)
220-6270 BK160
220-6754 BK260
220-7268 BK60/50/60
230-6427 RAM Back Cover with cutout for receptacle
13 823-7515 Joiner Strip
14
I 108-0448 Valve Assy, 1 ½” Drain (Y/KSCF 18)
1 810-2784Valve, 1 ¼” Full Port Drain(includes item # - O-ring)
2 823-5075Valve , 1 ¼” W/A, Drain Wingstreet
* 810-2126Valve, 1 ¼” Full Port Drain(includes handle)
3 810-2783Valve, 1 ½” Full Port Drain (use 823-5053 for Y/KSCF18G)
4 810-2127Valve, 1 ½” Full Port Drain
5 823-7426 Handle W/A, BK50 Drain Valve
6 823-6262 Handle W/A, HD50/Y/KSCF18G Drain Valve
7 823-6340Handle W/A, CF150 Drain Valve
8 823-7632Handle W/A, BK60 Drain Valve
9 823-6424Handle W/A, Rotating 118G Drain Valve
10 816-0544 O-Ring Seal
11 816-0547Cap, Vinyl Red
12 816-0549Cap, Vinyl Blue
13 807-2104Switch, CE Micro Roller Lever
14 106-6020Bracket Assy 1 ¼” Drain Valve (use 108-3706 on GM1814)
15 106-8173Bracket Assy 1 ¼” Drain Valve CF150
16 106-5511Bracket Assy 1 ½” Drain Valve HE50 (use 108-3701 on GM1814)
17 200-6795Strap, 1 ¼” Drain Valve Connecting
18 200-6116Strap, Round Drain Connecting (use 220-5155 for Y/KSCF18)
19 200-8796 Bracket, Drain KSCF218
20 809-0988Washer, 1.00 OD x .525 ID Teflon
21 816-0220Insulation, RF Switch
22 220-0143 Guard, BID180 Microswitch Drain
23 901-2348Cover, DV Safety Switch
24 200-1257Retainer, Drain Valve Nut
* 812-1717SPNipple, Drain (BK160 Non-Filter)
* Not illustrated.
2-22
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
2.5 Oil Return System
CHAPTER 2: PARTS LIST
2
17
26
16
15
37
19
7
18
11
27
5
6
3
12
14
13
21
1
9
20
22
8
27
13
5
14
2
5
24
23
1
18
21
24
31
10
29
35
33
7
32
2
36
4
28
3430
2-23
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.5 Oil Return System (cont.)
ITEM PART # DESCRIPTION
1 106-4006SPValve Assembly, ½" Oil Return (see Section 2.6 for com ponents)
2 106-7598SPValve, Solenoid with Female Pins
3 200-9295Handle, Oil Return (YSCFC 14, SCFHDC 50/60, HD 65)
4 200-8929 Handle, Oil Return (YSCFC 18)
5 809-0601Clip, Clevis (to attach handle to Item 1)
6 816-0639Cap, Red Vinyl (grip for end of handle)
7 210-8790 Bracket, Oil Return Handle
8 810-1057 Flexline, ⅝" OD x 13.00" Long
9 810-1067 Flexline, ⅝" OD x 8.50" Long
10 810-1680 Flexline, ⅝" OD x 6.50" Long
11 810-1400 Flexline, ⅝" OD x 21.00" Long
12 810-1160 Flexline, ⅝" OD x 3.00" Long
13 810-1668 Adapter, Male, ⅝" OD x ½"
14 810-1669 Adapter, Female, ⅞" OD x ½"
15 810-3199Fitting, ¼" NPT x ⅜", Hose Barb
16 812-1838 Tubing, ⅜" OD, 27.00" Long
17 810-1372Fitting, ¼" NPT x ⅜" OD, 90° Tube
18 813-0022Nipple, ½" NPT Close, Black Metal
19 813-0062Elbow, ½", 90°, Black Metal
20 813-0298Nipple, ½" x 2.00" NPT, Black Metal
21 813-0304Bushing, ½" x ¼", Flush, Black Metal
22 813-0460Nipple, ½" x 3.00" NPT, Black Metal
23 813-0530Tee, Reducing, ½" x ¼" x ½"
24 813-0838Nipple, ¼" NPT Close, Black Metal
25 813-0919Elbow, ¼" Street, 90°, Stainless Steel
26 823-7800
27 813-0165Elbow, ½" x ½" Street, 90°
28 813-0173Union, ½" NPT, 150#
29 813-0331Elbow with Side Outlet, ½" NPT
30 810-2492Fitting, Straight, Quick Connect
31 810-3160
32 813-0003Tee, ½" x ½" x ½", Black Metal
33 813-0087Nipple, ½" x 1.50" NPT
34 813-0265Nipple, ½" x 2.50" NPT, Black Metal
35 813-0342Elbow, Street, 45°, ½" NPT
36 813-0515Nipple, ½" x 12.00" NPT
37
►►►
Bracket, Disconnect (Use 823-8001 for 2-Battery) (Use 823-7997 for
BK21814/HD50) (Use 823-7998 for BK units with RAM)
10 106-1454SPNozzle Assembly, Hose with Handle (part of 106-2568 and 108-0528)
11 810-1434Hose Assembly, Standard, 5 ½ feet (part of 106-2568 and 108-0528)
12 813-0165Elbow, Street, ½" NPT, 90° (part of 106-2568)
13 813-0699Nipple, Snaptite, ½" (#PHN8-8F) (part of 106-2568)
14 823-7153Handle, Wash Down Hose (part of 108-0528)
15 816-0631Cap, Red Vinyl, ½" x 3" (part of 108-0528)
16 810-0487Coupling, Male (part of 108-0528)
* 813-0368Nipple, ½" NPT x 16" Black Metal
* 813-0345Elbow, ½" NPT, 45° Black Metal
* 813-0087Nipple, ½" NPT x 1.5" Black Metal
* 810-2043 Clamp, Pipe, ½" (Jiffy H-40)
* 230-4773 Bracket, Side
* 823-6603 Lid (mounted in frame)
* 823-7652 Lid (mounted in frame) BK60/50/RAM/60, BK260
* 823-7418 Lid (mounted in frame) BK60/50/60
* 823-7627 Lid (mounted in frame) BK50/RAM/50/60
* Not illustrated.
2-30
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
CHAPTER 2: PARTS LIST
2.10.2 Filtration Components; SCFHDC60 Series Fryers
809-0428Screw, ¼-20 x ½" Hex Head
826-1389Screw, ¼-20 x ¾" Hex Head (pkg. of 10)
809-0918Screw, 10-24 x ½" Slotted Head
809-0845Screw, 10-32 x ⅜" Hex Slotted Head
809-0846Screw, 4-40 x 1"
* 809-0918Screw, 10-24 x ½" Round Slotted Head
*
*
*
*
*
*
* Not illustrated.
809-0167Screw, Sheet Metal 10 A x ⅝" B
809-0475Screw, #10 x ⅜" Hex Washer Head
809-1019Screw, .375 x ½" Shoulder
826-1379 Screw, #10 x ½" Phillips Truss Head (pkg. of 10)
809-0962 Screw, 8-32 x 1-⅝" Phillips Truss Head
809-0191Washer, ¼" Spring-lock
2-41
HIGH EFFICIENCY DECATHLON SERIES GAS FRYERS
2.14 Flexlines
CHAPTER 2: PARTS LIST
17.50 (± 1.00)
Typical Flexline
LENGTH PART NUMBER LENGTH PART NUMBER
3.0-inch 810-1160 13.0-inch 810-1057
4.5-inch 810-1339 17.5-inch 810-1369
5.0-inch 810-1159 21.0-inch 810-1400
6.5-inch 810-1680 21.5-inch 810-1068
8.5-inch 810-1067 29.5-inch 810-1069
9.5-inch 810-1043 53.5-inch 810-1056
11.5-inch 810-1055
Flexlines come with a ⅞-inch female fitting on each end. Adapters (listed below) are required to fit them to standard ½-
inch NPT pipe nipples of fittings. Add ¾-inch to the overall length of the flexline for each adapter used.
1.91
1.55
810-1668
810-1669
NOTE: Be aware that these are flexible metal lines. Consequently, the length of a particular line can vary as much as ±
½ inch on shorter lines and ± 1 inch on longer lines, depending upon whether the line has been stretched or compressed
in handling.
2-42
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