Frymaster 35 User Manual
35 Series Gas Fryers
Service & Parts Manual
Frymaster, a member of the Commercial Food Equipment Service Association, recommends
using CFESA Certified Technicians.
24-Hour Service Hotline 1-800-551-8633
819-5795
March 2003
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/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/DEAN AND ITS AFFILIAT ES WILL NOT BE
LIABLE FOR ANY CLAIMS, DAMAGES OR EXPENSES INCURRED BY THE CUST OMER 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.
NOTICE
This appliance is intended for professional use only and is to be operated by qualified
personnel only. A Frymaster/DEAN Factory Authorized Service Center (FASC) or other qualified
professional should perform installation, maintenance, and repairs. Installation, maintenance,
or repairs by unqualified personnel may void the manufacturer’s warranty. See Chapter 1 of
this manual for definitions of qualified personnel.
NOTICE
This equipment must be installed in accordance with the appropriate national and local codes of
the country and/or region in which the appliance is installed. See NATIONAL CODE
REQUIREMENTS in Chapter 2 of this manual for specifics.
NOTICE TO U.S. CUSTOMERS
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 U.S. Food and Drug Administration.
NOTICE
Drawings and photos used in this manual are intended to illustrate operational, cleaning and
technical procedures and may not conform to onsite management operational procedures.
NOTICE TO OWNERS OF UNITS EQUIPPED WITH COMPUTERS
U.S.
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 interference 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
Improper installation, adjustment, maintenance or service, and unauthorized alterations or
modifications can cause property damage, injury, or death. Read the installation, operating,
and service instructions thoroughly before installing or servicing this equipment. Only qualified
service personnel may convert this appliance to use a gas other than that for which it was
originally configured.
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.
DANGER
Adequate means must be provided to limit the movement of this appliance without depending
upon the gas line connection. Single fryers equipped with legs must be stabilized by installing
anchor straps. All fryers equipped with casters must be stabilized by installing restraining
chains. If a flexible gas line is used, an additional restraining cable must be connected at all
times when the fryer is in use.
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.
DANGER
Do not store or use gasoline or other flammable liquids or vapors in the vicinity of this or any
other appliance.
DANGER
Instructions to be followed in the event the operator smells gas or otherwise detects a gas leak
must be posted in a prominent location. This information can be obtained from the local gas
company or gas supplier.
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.
35 SERIES GAS FRYERS
TABLE OF CONTENTS
CHAPTER 1: Service Procedures
1.1 Functional Description......................................................................................... 1-1
1.2 Accessing Fryer for Servicing .............................................................................1-2
1.3 Cleaning the Gas Valve Vent Tube .....................................................................1-2
1.4 Checking Burner Manifold Pressure.................................................................... 1-2
1.5 Adjusting Burner Ceramic Target Spacing and Alignment................................. 1-2
1.6 Adjusting Pilot Flame..........................................................................................1-3
1.7 Calibrating Thermostat Control...........................................................................1-3
1.8 Replacing Fryer Components .............................................................................. 1-5
1.8.1 Replacing the Operating Thermostat in Standard MJ35 Fryers...........................1-5
1.8.2 Replacing the Operating Thermostat in G-Model Fryers....................................1-5
1.8.3 Replacing the High-Limit Thermostat in Standard MJ35 Fryers........................ 1-6
1.8.4 Replacing the High-Limit Thermostat in G-Model Fryers.................................. 1-6
1.8.5 Replacing Burner Ceramic Targets...................................................................... 1-7
1.8.6 Replacing the Gas Valve...................................................................................... 1-8
1.8.7 Replacing Pilot Assembly or Thermopile............................................................ 1-8
1.8.8 Replacing the Frypot..........................................................................................1-10
1.9 Troubleshooting and Problem Isolation............................................................. 1-11
1.9.1 Pilot Failures......................................................................................................1-12
1.9.2 Problems Related to the Gas and/or Electrical Current.....................................1-12
1.9.3 Problems Related to the Electrical Circuits.......................................................1-13
1.9.4 Problems Related to the Gas Valve ...................................................................1-13
1.9.5 Improper Burner Functioning............................................................................1-14
1.9.6 Improper Temperature Control.......................................................................... 1-15
1.9.7 Filtration Problems.............................................................................................1-15
1.9.8 Leakage.............................................................................................................. 1-17
1.9.9 Basket Lift Malfunctions ................................................................................... 1-17
Binding/Jamming Problems............................................................................... 1-18
Motor Problems .................................................................................................1-18
Electrical Problems............................................................................................1-18
Bell Crank Basket Lift Wiring Diagram............................................................ 1-18
1.10 Probe Resistance Chart......................................................................................1-19
CHAPTER 2: Parts List
Accessories ......................................................................................................................2-1
Basket Lift........................................................................................................................ 2-2
Cabinetry.......................................................................................................................... 2-3
Drain System Components ..............................................................................................2-4
Filter Boxes...................................................................................................................... 2-6
Filter Pans ........................................................................................................................ 2-7
Frypots ............................................................................................................................. 2-8
Gas Valves and Burner Components.............................................................................2-10
Oil Return Plumbing Components................................................................................. 2-12
Power Shower and Oil Return Handle Components......................................................2-14
Thermostats, Timer, and Related Components.............................................................. 2-15
i
35 SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1.1 Functional Description
The 35 Series fryers contain a welded steel (stainless or cold-rolled) frypot that is directly heated by
gas flames that are diffused evenly over its lower surface by ceramic deflectors (targets).
The flames originate from orifices in a U-shaped burner manifold positioned beneath the frypot.
The orifice diameters differ for natural and LP gas as indicated in the accompanying table.
35 Series Orifice Sizes (0-1999 ft/609 m)
Gas Inches Millimeters
Natural (G20/25) 0.0669 1.70mm
LP (G31) 0.0413 1.05mm
Gas flow to the manifold is regulated by an electromechanical gas valve. This series of fryers is
equipped with a millivolt gas valve and all models use a pilot ignition system.
Pilot Ignition System
The pilot ignition system is made up of the pilot orifice, pilot hood, and a thermopile. 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 passes through a normally
closed high-limit switch and energizes the gas valve pilot coil, which in turn opens the pilot valve.
If the pilot flame is extinguished, voltage is lost to the gas valve pilot coil and the pilot valve closes
Control Options
The temperature control knob on FM/MJ35 fryers is located behind the hinged front panel, out of
sight. On FM/MJ35G fryers, the knob is exposed on the face of the front panel. The MJ35G model
may be equipped with optional basket lifts. The basket lift option requires an electrical power
supply.
Thermostats
Fryers in this series are equipped with an adjustable controlling (operating) thermostat. The
temperature at which the thermostat opens and closes is adjusted by turning the temperature control
knob referenced above. The controlling thermostat used in the 35 Series fryers is sensitive to
one-degree changes in temperature.
All 35 Series fryers are equipped with a high-limit thermostat. In the event that the fryer fails to
properly control the oil temperature, the high-limit thermostat prevents the fryer from overheating to
the flash point. The high-limit thermostat acts as a normally closed power switch that opens when
exposed to temperatures above 425ºF to 450ºF (218ºC to 232ºC). The high-limit thermostat is the
same for CE and Non-CE applications, but the terminals for attaching it to the gas valve differ.
When a replacement high-limit thermostat is ordered, the terminals for both applications are
furnished in the kit.
1-1
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 in Chapter 4 of this manual before
attempting to relocate a fryer for servicing.
1. Drain shortening from fryer.
2. Shut off the gas supply to the unit. Unplug the power cord(s) if equipped. Disconnect the unit
from the gas supply.
3. Remove any attached restraining devices.
4. Relocate the fryer for service accessibility.
5. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and
plug in the electrical cords.
6. Refill with shortening.
1.3 Cleaning the Gas Valve Vent Tube
Refer to Semi-Annual Checks and Services in Chapter 5, Preventive Maintenance, of the Installation
and Operation Manual (P/N 819-5776).
1.4 Checking the Burner Manifold Gas Pressure
Refer to Semi-Annual Checks and Services in Chapter 5, Preventive Maintenance, of the Installation
and Operation Manual (P/N 819-5776).
1.5 Adjusting Burner Ceramic Target Spacing and Alignment
DANGER
Drain the frypot or remove the handle from the drain valve before proceeding further.
Proper spacing of the top edge of the burner ceramic targets is ¾ inch (13 mm) from the frypot side.
To adjust target spacing, bend the brackets to which they are attached away or toward the frypot to
the proper distance. (A length of board of the proper thickness is useful as a gauge to verify spacing
and alignment.)
3/4-inch
There should be about 3/4-inch spacing between the
top edge of the targets and the side of the frypot.
1-2
1.6 Adjusting the Pilot Flame
Non-CE Gas Valves
1. For Non-CE Gas Valves, remove the screw
from the pilot adjustment screw hole on the gas
valve.
2. Using a small, flat-tipped screwdriver, turn the
pilot adjustment screw counterclockwise to increase the length of the flame or clockwise to
decrease the length of the flame. Adjust flame
to a length of 1 to 1½ inches (25 to 38mm).
3. Reinstall the pilot adjustment screw cap.
The pilot adjustment screw on the Non-CE
Honeywell valve is under this screw.
CE Gas Valves
Using a small, flat-tipped screwdriver, turn the pilot
adjustment screw counterclockwise to increase the
length of the flame or clockwise to decrease the
length of the flame. Adjust flame to a length of 25
to 38mm.
The pilot adjustment on the CE valve is here.
1.7 Calibrating the Thermostat Control
On Standard MJ35 Fryers
1. Fill the frypot to the lower OIL-LEVEL line with cooking oil. If solid shortening is used, it must
be tightly packed into the frypot before starting calibration procedure.
2. Light the pilot. (Refer to Chapter 3 of the Installation and Operation Manual, P/N 819-5776 for
detailed lighting instructions.)
3. Insert a good grade thermometer or pyrometer into the frypot, about one inch from the
thermostat.
4. Set the thermostat to 325°F (162°C).
5. Let the burner cycle on and off three times.
1-3
6. Take a pyrometer reading when the burners go off for the third time.
7. Loosen the setscrews in the thermostat knob and turn knob to the temperature established by the
pyrometer reading.
8. Allow burners to cycle on and off three more times and recheck pyrometer reading against
thermostat setting. Temperature readings should be within 5°F (2°C).
On G-Model Fryers
1. Fill the frypot to the lower OIL-LEVEL line with cooking oil. If solid shortening is used, it must
be tightly packed into the frypot.
2. Light the pilot. (Refer to Chapter 3 of the Installation and Operation Manual, P/N 819-5776, for
detailed lighting instructions.)
3. Insert a good grade thermometer or pyrometer into the frypot, about one inch from the
thermostat.
4. Set the thermostat to 325°F (162°C).
5. Allow the burners to cycle on and off three times. Compare the reading of the pyrometer to the
setting on the thermostat plate. The position of the knob on the thermostat and the reading from
the pyrometer should be within 5°F (2°C) of each other.
6. If not, loosen the setscrew and stop screw securing the thermostat shaft extension to the flexible
shaft. Remove the extension to expose the slot in the end of the flexible shaft. Use a flatblade
screwdriver to adjust the thermostat.
7. When the cooking oil temperature reaches 325ºF (162ºC), turn the flexible shaft slowly clock-
wise until the burner shuts off. (Turning the shaft counterclockwise causes the burner to light;
turning it clockwise causes it to shut off.)
8. Allow the fryer to sit for a few minutes, then slowly turn the flexible shaft counterclockwise
until the burner lights.
9. Repeat steps 6 and 7 at least three times to ensure an accurate setting is obtained. The thermostat
control is considered to be properly calibrated if the burner lights as the cooking oil cools to
325ºF (162ºC)—not when the burner shuts off as the temperature rises.
10. Once the calibration point of 325ºF (162ºC) is determined, allow the burner to cycle on and off at
least three times to be sure it will light at the calibrated temperature.
11. Carefully replace the thermostat shaft extension, ensuring that the stop screw is pointed straight
up. Tighten the stop screw and locking nut and the setscrew, being careful not to rotate the
flexible shaft.
CAUTION
The thermostat flexible shaft must not be rotated while installing the thermostat
shaft extension.
1-4
12. Close the fryer control panel and replace the screws in the upper corners.
13. Reinstall the thermostat knob with its pointer aligned with the 325ºF (162ºC) index mark on the
temperature dial.
14. Reconnect the fryer to the electrical power supply.
1.8 Replacing Fryer Components
1.8.1 Replacing the Operating Thermostat in Standard MJ35 Fryers
1. Drain the fryer and turn the gas off.
2. Use an allen wrench to loosen setscrew at the side of the thermostat knob. Remove the
thermostat knob.
3. Remove the two setscrews on either side of the
thermostat shaft and remove the dial plate.
4. Disconnect the thermostat wires from gas valve.
5. Use a slotted socket to unscrew the thermostat
from the frypot.
6. Apply a small amount of Loctite™ PST56765
compound to the threads of the new thermostat
Setscrews hold the k nob and dial plate to the
thermostat. Us e an allen wrench to remove both.
and screw it into the frypot, torquing to 180
inch-pounds.
7. Recalibrate the thermostat (see Section 1.7).
CAUTION
The operating thermostat must be calibrated after installation is complete. Refer to
Section 1.7 for calibration instructions.
1.8.2 Replacing the Operating Thermostat in G-Model Fryers
1. Drain the fryer and turn the gas off.
2. Use an allen wrench to loosen the setscrews on
the side of the thermostat knob. Remove the
knob and the control panel.
3. Loosen the setscrew attaching the flexible shaft
to the thermostat shaft.
4. Remove the two setscrews that hold the flexible
shaft bracket in place. Remove the bracket and
the shaft.
On G-Model fryers, the shaft connecting the exterior
thermostat knob to t he frypot-mounted thermostat
must be disconnected.
1-5
5. Use a slotted socket to unscrew the thermostat from the frypot.
6. Apply a small amount of Loctite™ PST56765 compound to the threads of the new thermostat
and screw it into the frypot, torquing to 150 foot-pounds.
7. Recalibrate the thermostat (see Section 1.7).
CAUTION
The operating thermostat must be calibrated after installation is complete. Refer to
Section 1.7 for calibration instructions.
1.8.3 Replacing the High-Limit Thermostat in Standard MJ35 Fryers
1. Drain the fryer and turn the gas off.
2. Disconnect the wires at the gas valve.
3. Use a slotted socket to unscrew the high-limit
thermostat from the frypot.
4. Apply a small amount of Loctite™ PST56765
compound to the threads of the new thermostat.
The high-limit thermostat on the standard MJ35 is
located below the thermostat dial.
5. Screw the replacement thermostat into the frypot, torquing to 180 inch-pounds.
1.8.4 Replacing the High-Limit Thermostat in G Series Fryers
1. Drain the fryer and turn the gas off.
2. Disconnect basket lift- or filter-equipped fryers
from the electrical power supply.
3. Disconnect the thermostat wires from the gas
valve.
4. Use a slotted socket to unscrew the thermostat
from the frypot.
On G-Model fryers, the high-limit thermostat is
accessed through the cabinet dooor.
5. Apply a small amount of Loctite™ PST56765 compound to the threads of the new thermostat.
6. Screw the replacement thermostat into the frypot, torquing to 180 inch-pounds.
1-6
1.8.5 Replacing Burner Ceramic Targets
DANGER
Drain the frypot or remove the handle from the drain valve before proceeding further.
1. Disconnect the fryer from the electrical power
and gas supplies.
2. On FM35 fryers, remove sections of the
square-drain as necessary to expose the burner.
Step 2: On FM35 fryers, sect ions of t he drain system
must be removed to access the burner assembly.
3. Disconnect the wires from the gas valve
terminal block and pilot coil, marking each
wire to facilitate reconnection.
4. Disconnect the pipe union collar at the right
side of the gas valve.
5. Remove the burner hanger screws and lower
the front of the main burner. Pull it forward to
clear the rear burner hanger, then lower the
burner to the floor.
Step 3: Mark and disconnect the wires from the gas
valve.
6. Raise the front of the fryer enough to slide the
burner from under the fryer cabinet.
7. To replace a ceramic target only, remove the
wire, straighten the target locking tab with a
pair of needle nose pliers or a screwdriver, and
slide the target up and off the bracket. Slide the
replacement target onto the bracket and bend the
locking tabs down.
Step 5: These screws on each side of the drain valve
must be removed to l ower the burner f rom the frypot.
To replace the entire target assembly,
use a 1/2-inch box end wrench to
remove the orifice that holds the target
to the manifold assembly.
To replace a ceramic target only, remove
the wire, bend this tab outward, and slide
the target up and off the bracket.
1-7
8. To replace the entire target assembly, use a ½-inch box end wrench to remove the brass orifice
that holds the assembly to the burner manifold. Position the new assembly and reinstall the
orifices.
WARNING
Use extreme care to prevent cross-threading and stripping when reinstalling the
brass orifices.
9. Reverse steps 1-8 to reinstall the burner assembly. Check spacing and alignment of targets in
accordance with Section 1.5.
1.8.6 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, marking each wire to facilitate reconnection.
3. Disconnect the pilot gas line fitting from the gas valve.
4. Disconnect the pipe union collars to the left and right of the gas valve and remove the valve.
5. Remove the pipefittings from the old gas valve and install on the replacement valve, using
Loctite™ PST56765 or equivalent pipe thread sealant on threads.
6. Reverse steps 1-4 to install the replacement gas valve.
1.8.7 Replacing the Pilot Assembly or Thermopile
DANGER
Drain the frypot or remove the handle from the drain valve before proceeding further.
1. Remove the burner assembly in accordance with steps 1-8 of Section 1.8.5.
2. To replace only the thermopile in fryers with the earlier design pilot assembly (see illustration at
top of Page 1-9):
a. Disconnect the thermopile lead(s) from the gas valve pilot coil.
b. Remove the screws that secure the pilot assembly guard.
c. Bend the tab away from the base of the thermopile.
d. Press down on the top of the thermopile to force it out of the pilot assembly.
e. Reverse steps a through c to install the replacement thermopile.
1-8
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