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Service Manual
GAS RESTAURANT RANGES
90 SERIES AND VG SERIES
MODEL
24L ML-52947
48L ML-52949
481L/LC ML-52950
148L/LC ML-52951
36L/LC ML-52948
60L/LC/LCC ML-52952
160L/LC ML-52953
260L/LC/LCC ML-52954
VG24 ML-114553
VG36 ML-114554
VG48 ML-114957
VG60 ML-114555
VG160 ML-114556
VG260 ML-114557
MODEL 36L/VG36
VULCAN-HART COMPANY, P.O. BOX 696, LOUISVILLE, KY 40201-0696, TEL. (502) 778-2791
FORM 31056 Rev. A (1-99)
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IMPORTANT OPERATING, INSTALLING AND SERVICE PERSONNEL Operating information for this equipment has been prepared for use by qualified and/authorized operating personnel. All installation and service on this equipment is to be performed by qualified, certified, licensed and/ authorized installation or service personnel, with the exception of any part marked with a in front of the part number. Service may be obtained by contacting the Factory Service Department, Factory Representative or Loca
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IMPORTANT FOR YOUR SAFETY THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL. POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED FROM THE LOCAL GAS SUPPLIER. IMPORTANT IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS AT MAIN SHUT-OFF VALVE AND CONTACT THE LOCAL GAS COMPANY OR G
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GAS RESTAURANT RANGE MODELS GAS RESTAURANT RANGE MODELS 60L, 60LC, 60LCC, 160L, 160LC, 260L, 260LC, 260LCC, VG60 VG160 VG260 48L 481L, 481LC 148L, 148LC 24L, 36L, 36LC, VG24 VG36 PL-53007 NOTE: Reference to 90 Series Convection Ovens will include only the following models: 36LC, 148LC, 481LC, 60LC, 60LCC, 160LC, 260LC, or 260LCC. — 4 —
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SERVICE MANUAL GAS RESTAURANT RANGES INDEX PLEASE KEEP THIS MANUAL FOR FUTURE REFERENCE DESCRIPTION PAGE SERVICE NOTATIONS 6 UNITS MOUNTED ON CASTERS 7 SERVICING SIMPLE CHECKS AND ADJUSTMENTS 7-10 GAS CONNECTIONS 11, 12 TESTING THE GAS SUPPLY SYSTEM 12 ORIFICE SIZE REQUIREMENTS FOR DIFFERENT ELEVATIONS 12 PILOT LIGHTING AND ADJUSTMENTS 13-17 THERMOSTAT ADJUSTMENTS 18-22 REGULATOR CHECK, ADJUSTMENT, INSTALLATION 23-25 STANDARD OVEN & GRIDDLE THERMOSTAT REPLACEMENT 26-28 CONVECTION OVEN THERMOSTAT
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DEDICATED TECHNICAL SERVICE HOT LINE- (1-502-778-2791) SERVICE NOTATIONS: 1. The procedures outlined in this manual are to be performed only by Vulcan-Hart authorized service representa- tives. 2. An authorized Vulcan-Hart service representative is one who is familiar with Vulcan equipment and who has been endorsed by Vulcan-Hart Company to service the equipment. All authorized service personnel are required to stock a minimum amount of parts and should be equipped with a complete set of wiring
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UNITS MOUNTED ON CASTERS Units mounted on casters utilizing a flex hose and quick-disconnect must be installed with a restraining device. The restraining device must be connected at all times. If disconnection of the device is necessary, turn off the gas supply before disconnection. Reconnect the restraint before turning the gas supply on and returning the unit to its original installation position and before beginning unit operation. SERVICING SIMPLE CHECKS AND ADJUSTMENTS The following is a
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SERVICING SIMPLE CHECKS AND ADJUSTMENTS (Cont.) 2. Oven Door Turnbuckle NOTE: For the 24L and 48L units, refer to procedure outlined under 2A. If the oven door is not closing properly, the door turnbuckle may require adjustment. To adjust the turnbuckle, flip down the lower front kick panel. The turnbuckle is connected between the right- and left-hand door springs (Fig. 1). With your hand, rotate the cast center piece of the turnbuckle two rotations at a time, then check the door tension.
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W A H C R S A T SERVICING SIMPLE CHECKS AND ADJUSTMENTS (Cont.) 3. Pilot Flame Height TOOLS REQUIRED: Standard flat blade screwdriver. Top Burners: To adjust pilot flame height of the unit top burners, locate the pilot adjustment screws found on the front manifold pipe. It is not necessary to remove the manifold cover, as adjustment access holes have been provided in the panel. With screwdriver, turn the adjustment screw of the pilot valve experiencing the pilot flame height problems (Fig. 3
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SERVICING SIMPLE CHECKS AND ADJUSTMENTS (Cont.) 2. With screwdriver, adjust pilot key (located under pilot adjustment cap) to provide the proper size flame. 3. Replace pilot adjustment cap. NOTE: If unit still is not heating correctly, refer to THERMOSTAT ADJUSTMENTS on Page 18. 4. Air Shutter Adjustment TOOLS REQUIRED: Standard flat blade screwdriver. The efficiency of the oven depends on a delicate balance between the air supply and the volume of gas. Whenever this balance is disturbed, poo
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GAS CONNECTIONS CAUTION: All gas supply connections and any pipe joint compound used must be resistant to the action of propane gases. 3 Each unit is factory-equipped with the type gas specified on the rating plate. The installation gas connection is a /4" 14 FPT thread ANSI schedule #40 standard pipe. Codes require that a gas shutoff valve be installed in the gas line ahead of the range. Standard units are equipped with fixed burner orifices which coincide with the proper unit operation eleva
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GAS CONNECTIONS (Cont.) NOTE: A leak limiter is supplied with every regulator to allow excess gas pressure to escape. Do not obstruct leak limiter on gas pressure regulator as obstruction may cause regulator to malfunction. WARNING: PRIOR TO LIGHTING, CHECK ALL JOINTS IN THE GAS SUPPLY LINE FOR LEAKS. USE SOAP AND WATER SOLUTION. DO NOT USE AN OPEN FLAME. After piping has been checked for leaks, all piping receiving gas should be fully purged to remove air. TESTING THE GAS SUPPLY SYSTEM 1 I
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PILOT LIGHTING AND ADJUSTMENTS NOTE: Although pilot lighting procedures are to be performed by both installation and operation personnel, only the installation/service personnel should attempt to make any pilot, burner, or temperature adjustments to this unit. The operation personnel are authorized only to perform the procedures for pilot lighting. All adjustment procedures associated with pilot lighting must be performed by an authorized Vulcan-Hart installation or service person. While per
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PILOT LIGHTING AND ADJUSTMENTS (Cont.) OPEN TOP BURNERS 1. Turn main gas supply “ON”. 2. Wait 30 seconds and, using a taper, light the open top pilot (Fig. 10). Fig. 10 3. If pilot fails to light, turn main gas supply “OFF”. Wait 5 minutes and repeat the above procedures. 4. Turn one open top burner valve “ON” to remove air from the gas line. Turn burner “OFF” when gas begins to flow. OPEN TOP BURNER ADJUSTMENTS TOOLS REQUIRED: Standard flat blade screwdriver. 1. After pilot is lit, turn open
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PILOT LIGHTING AND ADJUSTMENTS (Cont.) BROILER/GRIDDLE 1. Turn main gas supply “ON”. 2. Wait 30 seconds and, using a taper, light broiler/griddle pilot (see Fig. 9). 3. If pilot fails to light, turn main gas supply “OFF”. Wait 5 minutes and repeat Steps 1 and 2. 4. Turn burner valve “ON” to purge air from the lines. Turn burner valve “OFF” when gas begins to flow. BROILER/GRIDDLE ADJUSTMENTS TOOLS REQUIRED: Standard flat blade screwdriver, lighter taper. Adjust pilot burner flame, if necessar
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PILOT LIGHTING AND ADJUSTMENTS (Cont.) 2. Light pilot by depressing the reset button located behind the kick panel (Fig. 12). Light pilot and continue to hold reset button in for 1 minute. If pilot fails to light, turn main gas supply “OFF” and wait 5 minutes before repeating Step 2. 3. After pilot is lit, turn the temperature dial to the desired setting. Nightly Shutdown: Turn oven burner valve “OFF”. Complete Shutdown 1. Turn oven burner valve “OFF”. 2. Turn main gas supply “OFF”. Fi
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PILOT LIGHTING AND ADJUSTMENTS (Cont.) 4. If pilot fails to light, turn main gas supply “OFF”. Wait 5 minutes and repeat Steps 2 and 3. 5. After pilot is lit, push the power switch “ON” and turn the temperature dial to the desired setting. Nightly Shutdown: Turn the power switch “OFF” and the temperature dial to 0 degrees. Complete Shutdown 1. Push power switch “OFF”. 2. Turn red gas valve “OFF” (behind kick panel). 3. Turn main gas supply “OFF”. 4. Disconnect electrical supply cor
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THERMOSTAT ADJUSTMENTS NOTE: These procedures should be performed only by a qualified Vulcan-Hart service representative. STANDARD OVEN Although the unit thermostats are factory positioned to their proper setting, it is not unusual for the thermostat to be knocked out of adjustment during shipment. If the oven or griddle heat response seems to be lacking after burner air shutter adjustments have been checked, perform the following adjustments. NOTE: There are two possible conditions of the th
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THERMOSTAT ADJUSTMENTS (Cont.) 3. Light the burner. Turn the dial to the highest set temperature. 4. After 10 minutes, turn the dial clockwise to the point slightly beyond the first mark on the dial (shown by an “X”). 5. Remove the dial and sleeve (Fig. 17). Shown with old style burner knobs. Shown with old style burner knobs. Fig. 17 Fig. 18 6. With a screwdriver, turn the left-hand bypass adjustor screw counterclockwise to increase the flame, clockwise to 1 decrease it, until the fla
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THERMOSTAT ADJUSTMENTS (Cont.) 3. Allow unit to heat until the burner flame is heard cutting “OFF”. Wait about 10 minutes until the burner flame has cycled “ON” and “OFF” several times. Then compare the test instrument reading with the dial setting. If the reading is within ± 15° F (-9.44°C) of the dial setting, its calibration is correct. If reading is not within this temperature window, then recalibrate by performing Steps 4 through 13. 4. Pull the dial straight off the dial shaft (see F
