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SERVICE MANUAL

GHF SERIES HEAVY DUTY
RANGE MATCHING GAS
FRYERS & FRYMATES

MODELS

GHF91G

ML-135503

GHF90G

ML-135504

- 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

FORM 35618 (11-04)

Содержание GHF90G

Страница 1: ...duct you should read in it s entirety the repair procedure you wish to performtodetermineifyouhavethenecessarytools 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 i...

Страница 2: ...ermostat 5 High Limit 6 Thermopile 6 Pilot Orifice 7 Combination Valve 7 Fry Tank 8 SERVICE PROCEDURES AND ADJUSTMENTS 9 Millivolt Controls Test 9 Thermostat Calibration 9 Calibration Steps 9 Pilot Adjustment 10 Burners Nozzles and Orifices 10 Burners 10 Nozzles and Orifices 10 Combination Valve Regulator Adjustment 11 ELECTRICAL OPERATION 12 Control System Description 12 System Condition Quick Ch...

Страница 3: ...mbination valve knob in and turn to OFF 3 Wait 5 minutes for unburned gas to vent 4 Push combination valve knob in and turn to PILOT 5 While holding the combination valve knob in light the pilot with a lit taper Hold the combination valve knob in for approximately 30 seconds before releasing GENERAL MODEL No Tubes BTU HR GHF91G 4 120 000 GHF90G 0 0 NOTE If pilot does not remain lit repeat steps 2 ...

Страница 4: ...his procedure to reinstall the door panel Front Panel 1 Using a flat head screwdriver remove 2 screws holding the front panel in place 2 Remove the panel from the unit REMOVAL AND REPLACEMENT OF PARTS BURNERS WARNING SHUT OFF THE GAS BEFORE SERVICING 1 Open door panel 2 Loosen Do not remove the two mounting bolts at the top of each burner 3 Push burner up while pulling the bottom of the burner for...

Страница 5: ...unting bracket 5 Remove wire leads from the rear of the thermostat noting all connections for reassembly 6 Loosen the packing nut and holding nut 7 Remove the thermostat bulb from the clamp 8 Pullthethermostatbulbthroughtheunderside of the fry tank and remove the thermostat assembly 9 Reverse the procedure to install When installing the new thermostat assembly do notkinkthethermostatcapillary Wrap...

Страница 6: ... BUBBLES DO NOT USE AN OPEN FLAME 1 Disconnect thermopile lead wires as outlined under High Limit 2 Remove 1 10 24 screw and pull the pilot assembly away from the tank body 3 Remove 2 side screws to detach the pilot from the holding bracket 4 Remove pilot tubing from pilot 5 Remove screws holding pilot bracket HIGH LIMIT WARNING SHUT OFF THE GAS BEFORE SERVICING 1 Drain shortening from fry tank 2 ...

Страница 7: ... and reverse procedure to assemble 2 Remove the right hand burners as outlined under Burners optional 3 Disconnectleadwiresfromcombinationvalve and mark for reconnecting 4 Disconnect pilot tubing from combination valve 5 Disconnect combination valve union Fig 1 and pressure fitting Fig 2 Fig 1 Fig 2 6 Remove the combination valve from the fryer 7 Reverse procedure to install COMBINATION VALVE WARN...

Страница 8: ... crumb screen 4 Remove screws holding fry tank 5 Remove burners as outlined under Burners 6 Remove the manifold bracket from the tank assembly 7 Remove thermostat and high limit as outlined under Thermostat and High Limit 8 Remove screws holding pilot assembly to bracket and remove pilot assembly 9 Lift the fry tank up and out of cabinet Carefully place the tank assembly on the floor this procedur...

Страница 9: ... is 500 millivolts or more replace the combination valve 6 Connect DC voltmeter to terminals TP and TH of combination valve 7 Turn combination valve to ON Turn thermostat to a setting higher than the shortening temperature A If the voltage measures 150 millivolts or morebuttheburnersdonotignite replace the combination valve B If the voltage is less than 150 millivolts measure the voltage between t...

Страница 10: ...CES WARNING SHUT OFF THE GAS BEFORE SERVICING Burners If the burner ports become clogged the fryer will not operate properly If the burner is cracked it must be replaced 1 Remove burner s as outlined under Burners 2 Checkburner s forcracksandcloggedports 3 If the ports are clogged wash burner s in warm soapy water If this does not remove obstructions a 37 drill bit can be used do not use in an ele...

Страница 11: ...lockwise to increase pressure 7 Install the cap and check for proper operation COMBINATION VALVE REGULATOR ADJUSTMENT WARNING SHUT OFF THE GAS BEFORE SERVICING Accurate gas pressure adjustments can only be made with the gas on and the burner lit If the incoming line pressure to the valve is less than the minimum stated then the pressure cannot be set correctly The combination valve is preadjusted ...

Страница 12: ...normally open contacts of high limit CONTROL SYSTEM DESCRIPTION 1 The thermopile TP provides the total control voltage for this system A One side of the thermopile is connected to the common C of the high limit HL B The other side of the thermopile is connected to the normally open NO contacts of the high limit C The common of the high limit below the high limit trip temp is connected through the ...

Страница 13: ... Temperature range of 200 F to 400 F Thermopile Millivolt control with 24 capillary Rated to generate 500 millivolts Combination Valve Regulates gas flow to burner and pilot Provides pilot safety Hi Limit Prevents overheating of fryer in the event of thermostat failure Opens at 450 F and automatically resets at 415 F ...

Страница 14: ...enings need cleaning A Excessive temperature settings over 375 F B Shortening not being filtered regularly C Incorrect preparation of breaded food Do not use salt Allow breading time to adhere to food Do not allow loose flour to fall into shortening from hands D Do not add strainings or drippings from meat fats to shortening E Use correct shortening and follow temperature recommendations F Take ou...

Страница 15: ...ing an empty tank will damage tank joints C Carbon buildup causes rapid attack on tank by promoting acid formulation A Check gas pressure at submanifold fitting on fryer when fryer is in operation Check all other equipment on the same gas line in operation B Pressure at submanifold pipe on which burners are mounted should not be less than 4 0 W C natural and mixed gas or 10 W C for propane gas 5 P...

Страница 16: ... 16 FORM 35618 11 04 PRINTED IN U S A NOTES ...

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