Manual de instrucciones de Vulcan-Hart GHF90G

Manual de instrucciones del aparato Vulcan-Hart GHF90G

Aparato: Vulcan-Hart GHF90G
Categoría: Freidora
Fabricante: Vulcan-Hart
Tamaño: 0.56 MB
Fecha de añadido: 9/2/2014
Número de páginas: 16
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Resumen del contenido incluido en la página 1

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

Resumen del contenido incluido en la página 2

TABLE OF CONTENTS GENERAL .............................................................................................................................................................. 3 Introduction ............................................................................................................................................... 3 Installation .............................................................................................................................................

Resumen del contenido incluido en la página 3

GENERAL NOTE: If pilot does not remain lit, repeat steps 2 INTRODUCTION through 5, but allow a longer period of time before releasing the combination valve knob. Adjust pilot flame, if necessary, as outlined under Pilot Adjustment Models in Service Procedures and Adjustments. This service manual was written for: 6. Turn combination valve knob to ON. GHF91G Gas Fryers and GHF90G Gas Frymates. SPECIFICATIONS INSTALLATION Gas Data Generally, installations are made by the dealer or contracted by the

Resumen del contenido incluido en la página 4

REMOVAL AND REPLACEMENT OF PARTS COVERS AND PANELS BURNERS WARNING: SHUT OFF THE GAS BEFORE WARNING: SHUT OFF THE GAS BEFORE SERVICING. SERVICING. 1. Open door panel. Door 2. Loosen (Do not remove) the two mounting 5 1. Open door and using a /16" wrench or ratchet, bolts at the top of each burner. remove (2) screws securing the top door mounting bracket to the left body side channel. 3. Push burner up while pulling the bottom of the burner forward to clear the burner nozzle. 2. Hold door in one

Resumen del contenido incluido en la página 5

6. Loosen the packing nut and holding nut. THERMOSTAT WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Drain shortening from fry tank. 2. Remove left burner as outlined under Burners. 3. Remove thermostat knob by pulling knob off thermostat shaft. 4. Remove thermostat mounting screws and remove thermostat from mounting bracket. 7. Remove the thermostat bulb from the clamp. 5. Remove wire leads from the rear of the thermostat, noting all connections for 8. Pull the thermostat bulb through the under

Resumen del contenido incluido en la página 6

7. Pull the high limit bulb through the underside HIGH LIMIT of the fry tank and remove the high limit assembly. WARNING: SHUT OFF THE GAS BEFORE SERVICING. 1. Drain shortening from fry tank. 2. Remove wire leads from high limit, noting all connections for reassembly. 8. Reverse the procedure to install. When installing the new high limit assembly, do not kink the high limit capillary. Wrap threads of packing nut with Teflon tape to prevent leakage. THERMOPILE WARNING: SHUT OFF THE GAS BEFORE SE

Resumen del contenido incluido en la página 7

6. Remove thermopile from pilot bracket. 2. Remove the right hand burners as outlined under Burners (optional). 3. Disconnect lead wires from combination valve and mark for reconnecting. 4. Disconnect pilot tubing from combination valve. 7. Reverse procedure to install. PILOT ORIFICE 5. Disconnect combination valve union (Fig.1) WARNING: SHUT OFF THE GAS BEFORE and pressure fitting (Fig. 2). SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP

Resumen del contenido incluido en la página 8

8. Remove screws holding pilot assembly to FRY TANK bracket and remove pilot assembly. WARNING: SHUT OFF THE GAS BEFORE SERVICING. WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME. 1. Disconnect fryer from main gas supply. 2. Drain oil from tank. 3. Remove baskets, fryer basket hanger and crumb screen. 9. Lift the fry tank up and out of cabinet. Carefully place the tank assembly on the floor (thi

Resumen del contenido incluido en la página 9

SERVICE PROCEDURES AND ADJUSTMENTS 7. Turn combination valve to ON. Turn MILLIVOLT CONTROLS TEST thermostat to a setting higher than the shortening temperature. 1. Verify proper gas (natural or propane) is present. A. If the voltage measures 150 millivolts or more but the burners do not ignite, replace 2. Check for correct wiring and secure the combination valve. connections. B. If the voltage is less than 150 millivolts, 3. Verify the pilot flame is adjusted properly as measure the voltage betw

Resumen del contenido incluido en la página 10

5. Allow temperature to stabilize at new setting BURNERS, NOZZLES AND ORIFICES and compare temperature tester to dial setting. Recalibrate if the temperature does not fall within the range of 330°F to 370°F. WARNING: SHUT OFF THE GAS BEFORE SERVICING. 6. If the temperature does not fall within the limits at both settings, replace the thermostat. Burners If the burner ports become clogged, the fryer will not PILOT ADJUSTMENT operate properly. If the burner is cracked, it must be replaced. 1. Ligh

Resumen del contenido incluido en la página 11

3. Turn on the gas and light the pilot as outlined COMBINATION VALVE REGULATOR under Lighting Pilot in General. ADJUSTMENT 4. Turn the combination valve to ON. WARNING: SHUT OFF THE GAS BEFORE 5. Set the thermostat so the burners will come SERVICING. on. Accurate gas pressure adjustments can only be 6. Read the pressure gauge. The manifold made with the gas on and the burner lit. If the pressure reading should match the pressure incoming line pressure to the valve is less than the rating on the

Resumen del contenido incluido en la página 12

ELECTRICAL OPERATION 3. Total Shutdown. CONTROL SYSTEM DESCRIPTION A. When the high limit trips, 0.0 millivolts 1. The thermopile (TP) provides the total control will read across both coils of the voltage for this system. combination valve, causing both valves to close. A. One side of the thermopile is connected to the common (C) of the high limit (HL). B. Pilot relight cannot be accomplished until oil cools sufficiently to allow high limit to B. The other side of the thermopile is close. conn

Resumen del contenido incluido en la página 13

SCHEMATIC COMPONENT FUNCTION Thermostat - Millivolt type with capillary bulb, single-throw break on temperature rise. 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. – 13 –

Resumen del contenido incluido en la página 14

TROUBLESHOOTING POSSIBLE CAUSE SYMPTOM 1. The temperature of the shortening drops, A. Insufficient gas supply to unit. or excessive recovery time is required. B. Ventilating system pulling heat out of heat exchanger and flue box. C. Overloading fryer capacity. 2. Pilot won't stay lit. Fryer shut off. A. Malfunctioning thermopile or loose/dirty connection in thermopile. B. Malfunctioning shutoff valve. C. Pilot burner orifice and air openings need cleaning. A. Excessive temperature settings (over

Resumen del contenido incluido en la página 15

TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE 4. Leaking tank. A. Foam-over by depleted shortening permits oil to drip from the tank surface, giving the appearance of leaking. B. Careless draining procedures. Gas valve should be in the PILOT or OFF position before draining oil. Burners heating an empty tank will damage tank joints. C. Carbon buildup causes rapid attack on tank by promoting acid formulation. 5. Pilot burner flames adjusted properly, but A. Check gas pressure at submanifold fitting on fl

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NOTES FORM 35618 (11-04) – 16 – PRINTED IN U.S.A.


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