SERVICE MANUAL
EF SERIES
GAS FRYERS
MODELS
EF3 ML-52099
EF4 ML-114943
EF5 ML-114944
- NOTICE -
This manual is prepared for the use of trained Vulcan Service
Technicians and should not be used by those not properly qualified.
If you have attended a Vulcan Service School for this product, you
may be qualified to perform all the procedures described in this
manual.
This manual is not intended to be all encompassing. If you have not
attended a Vulcan Service School for this product, you should
read, in it's entirety, the repair procedure you wish to perform to
determine if you have the necessary tools, instruments and skills
required to perform the procedure. Procedures for which you do
not have the necessary tools, instruments and skills should be
performed by a trained Vulcan Service Technician.
Reproduction or other use of this Manual, without the express
written consent of Vulcan, is prohibited.
For additional information on Vulcan-Hart or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanhart.com
VULCAN-HART
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC
WWW.VULCANHART.COM
P.O. BOX 696, LOUISVILLE, KY 40201-0696
TEL. (502) 778-2791
F-35641 (2-05)
EF SERIES GAS FRYERS
CONTENTS
GENERAL .......................................................................................................................................... 3
INTRODUCTION ........................................................................................................................ 3
Models ................................................................................................................................ 3
INSTALLATION .......................................................................................................................... 3
OIL FILTERING .......................................................................................................................... 3
OPERATION .............................................................................................................................. 3
CLEANING ................................................................................................................................. 3
LIGHTING PILOT ....................................................................................................................... 3
SPECIFICATIONS ..................................................................................................................... 3
Gas Data ............................................................................................................................ 3
TOOLS ....................................................................................................................................... 3
Standard............................................................................................................................. 3
REMOVAL AND REPLACEMENT OF PARTS .................................................................................. 4
COVERS AND PANELS ............................................................................................................ 4
Door.................................................................................................................................... 4
Heat Shield......................................................................................................................... 4
BURNERS.................................................................................................................................. 5
THERMOSTAT ........................................................................................................................... 5
HIGH LIMIT ................................................................................................................................ 7
THERMOPILE ............................................................................................................................ 8
PILOT ORIFICE ......................................................................................................................... 9
PILOT ......................................................................................................................................... 9
COMBINATION VALVE ............................................................................................................ 10
FRY TANK .................................................................................................................................11
SERVICE PROCEDURES AND ADJUSTMENTS ........................................................................... 12
MILLIVOLT CONTROLS TEST ................................................................................................ 12
THERMOSTAT CALIBRATION ................................................................................................ 12
Calibration Steps .............................................................................................................. 12
PILOT ADJUSTMENT .............................................................................................................. 13
BURNERS, NOZZLES AND ORIFICES .................................................................................. 13
Burners ............................................................................................................................. 13
Nozzles and Orifices ........................................................................................................ 13
COMBINATION VALVE REGULATOR ADJUSTMENT............................................................ 14
ELECTRICAL OPERATION ............................................................................................................. 16
CONTROL SYSTEM DESCRIPTION ...................................................................................... 16
SYSTEM CONDITION QUICK CHECK PROCEDURES ......................................................... 17
SCHEMATIC ............................................................................................................................ 17
COMPONENT FUNCTION ...................................................................................................... 17
TROUBLESHOOTING ..................................................................................................................... 18
F35641 (02-05)
— 2 —
GENERAL
EF SERIES GAS FRYERS
INTRODUCTION
Models
This service manual was written for:
EF3, EF4 and EF5 Gas Fryers.
INSTALLATION
Generally, installations are made by the dealer
or contracted by the dealer or owner. Detailed
installation instructions are included in the
Installation and Operation Manual, which is
sent with each fryer.
OIL FILTERING
Filtering instructions are included in the
Installation and Operation Manual.
4. While still holding knob in light the pilot
with a taper. Continue to depress knob
(approximately 30 seconds) until the pilot
remains lit after the knob is released. If
pilot does not remain lit, repeat steps 2, 3
& 4.
5. Turn gas control valve knob to ON.
6. If gas supply is interrupted, repeat steps
1-5.
SPECIFICATIONS
Gas Data
MODEL NO. TUBES BTU/HR
EF3 3 90,000
EF4 4 120,000
EF5 5 150,000
OPERATION
Detailed operation instructions are included
with each fryer in the Installation and
Operation Manual.
CLEANING
Detailed cleaning procedures are included in
the Installation and Operation Manual.
LIGHTING PILOT
1. Turn thermostat OFF.
2. Turn gas control valve knob to OFF/PILOT.
Wait 5 minutes.
3. Push the gas control valve knob in.
TOOLS
Standard
• Hand tools (standard set)
• VOM with AC current tester (any quality
VOM with a sensitivity of at least 29,000
ohms per volt can be used)
• Gas test kit
• Temperature tester (thermocouple type)
• Manometer
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F35641 (02-05)
EF SERIES GAS FRYERS
REMOVAL AND REPLACEMENT OF PARTS
COVERS AND PANELS
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
Door
1. While holding onto the door remove (2)
screws securing the door hinge to the
fryer bottom front flange (Figure 1).
Heat Shield
1. Remove screws holding heat shield in
place (Figure 2).
Figure 1
2. Prepare to catch door assembly. Once
screws and hinge are removed, the door
will drop off into your hand(s).
3. Reinstall door assembly by reversing
steps 1 & 2 above.
F35641 (02-05)
Figure 2
2. Remove heat shield.
— 4 —
BURNERS
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
1. Remove heat shield as outlined under
Cover and Panels. (Optional)
2. Loosen the two mounting bolts at the top
of each burner (Figure 3).
EF SERIES GAS FRYERS
Figure 3
3. Push burner up while pulling the bottom
of the burner forward to clear the burner
nozzle (Figure 4).
Figure 4
4. Reverse the procedure to install.
THERMOSTAT
WARNING: SHUT OFF THE GAS BEFORE
SERVICING.
1. Drain shortening from fry tank.
2. Remove heat shield as outlined under
Covers and Panels.
3. Remove left burner as outlined under
Burners.
4. Remove thermostat knob by pulling knob
off thermostat shaft.
— 5 —
F35641 (02-05)
EF SERIES GAS FRYERS
5. Remove thermostat mounting screws and
remove thermostat from mounting bracket
(Figure 5).
7. Loosen the packing nut and holding nut
(Figure 7).
Figure 7
Figure 5
6. Remove wire leads from the rear of the
thermostat, noting all connections for
reassembly (Figure 6).
8. Remove the thermostat bulb from the
clamp (Figure 8).
F35641 (02-05)
Figure 8
9. Pull the thermostat bulb through the
underside of the fry tank and remove the
thermostat assembly.
Figure 6
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