Instruction/ maintenance manual of the product GHF90G ML-135504 Vulcan-Hart
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– 1 – SERVICE MANUAL GHF SERIES HEAVY DUTY RANGE MATCHING GAS FRYERS & FRYMATES MODELS GHF91G M L-135503 GHF90G M L-135504 - NOTICE - This manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualified.
– 2 – © VULCAN-HART, 2004 TABLE OF CONTENTS GENERAL .............................................................................................................................................................. 3 Introduction ....................
– 3 – INTRODUCTION Models This service manual was written for: GHF91G Gas Fryers and GHF90G Gas Frymates. 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.
– 4 – COVERS AND PANELS WARNING: SHUT OFF THE GAS BEFORE SERVICING. Door 1. Open door and using a 5 / 16 " wrench or ratchet, remove (2) screws securing the top door mounting bracket to the left body side channel. 2. Hold door in one hand and lift the door panel assembly off of the bottom hinge.
– 5 – 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.
– 6 – 7. Pull the high limit bulb through the underside of the fry tank and remove the high limit assembly. 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.
– 7 – 6. Remove thermopile from pilot bracket. 7. Reverse procedure to install. PILOT ORIFICE 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).
– 8 – FRY TANK 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.
– 9 – SERVICE PROCEDURES AND ADJUSTMENTS MILLIVOLT CONTROLS TEST 1. Verify proper gas (natural or propane) is present. 2 . Check for correct wiring and secure connections. 3. Verify the pilot flame is adjusted properly as outlined in Pilot Adjustment.
– 10 – 5. Allow temperature to stabilize at new setting and compare temperature tester to dial setting. Recalibrate if the temperature does not fall within the range of 330°F to 370°F. 6. If the temperature does not fall within the limits at both settings, replace the thermostat.
– 11 – 3. Turn on the gas and light the pilot as outlined under Lighting Pilot in General. 4. Turn the combination valve to ON. 5. Set the thermostat so the burners will come on. 6. Read the pressure gauge. The manifold pressure reading should match the pressure rating on the data plate.
– 12 – 3. Total Shutdown. A . When the high limit trips, 0.0 millivolts will read across both coils of the combination valve, causing both valves to close. B . Pilot relight cannot be accomplished until oil cools sufficiently to allow high limit to close.
– 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.
– 14 – TROUBLESHOOTING SYMPTOM 1 . The temperature of the shortening drops, or excessive recovery time is required. POSSIBLE CAUSE A . Insufficient gas supply to unit. B . Ventilating system pulling heat out of heat exchanger and flue box. C . Overloading fryer capacity.
– 15 – SYMPTOM 4. Leaking tank. TROUBLESHOOTING POSSIBLE CAUSE 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.
– 16 – FORM 35618 (11-04) PRINTED IN U.S.A. NOTES.
An important point after buying a device Vulcan-Hart GHF90G ML-135504 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Vulcan-Hart GHF90G ML-135504 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Vulcan-Hart GHF90G ML-135504 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Vulcan-Hart GHF90G ML-135504 you will learn all the available features of the product, as well as information on its operation. The information that you get Vulcan-Hart GHF90G ML-135504 will certainly help you make a decision on the purchase.
If you already are a holder of Vulcan-Hart GHF90G ML-135504, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Vulcan-Hart GHF90G ML-135504.
However, one of the most important roles played by the user manual is to help in solving problems with Vulcan-Hart GHF90G ML-135504. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Vulcan-Hart GHF90G ML-135504 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
