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MODEL VSX3E SHOWN
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 its 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.
A product of VULCAN-HART
Form 24618 (Rev.A, March 2000)
VSX SERIES CONVECTION STEAMERS
(ELECTRIC AND GAS)
VSX3E
ML-52396
VSX3E
ML-52397
VSX4E
ML-52398
VSX5E
ML-52399
VSX7EC
ML-114822
VSX7EO
ML-114821
- NOTICE -
SERVICE MANUAL
VSX10EC
ML-114824
VSX10EO
ML-114823
VSX5G
ML-114946
VSX5GC
ML-114947
VSX7GC
ML-114949
VSX10GC
ML-114949
LOUISVILLE, KY 40201-0696
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Table of Contents
Related Manuals for Vulcan-Hart VSX3E
Summary of Contents for Vulcan-Hart VSX3E
- Page 1 VSX10GC ML-114949 - 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.
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Page 2: Table Of Contents
Gas Models Only ..............40 © VULCAN 2000... -
Page 3: General
VSX SERIES STEAMERS -GENERAL GENERAL INTRODUCTION General This manual is applicable for all models listed on the cover page. Several models are pictured below for reference. Serial Number Break Listed below, are the beginning serial numbers for each model when the solid state water level control (three probe design) was added. -
Page 4: Specifications
VSX10 - Combination of two VSX5 units. Electric Steamers AMPERAGE 3 PHASE 1 PHASE TOTAL MODEL 208V 240V 480V 208V 240V 7.5 std. 20.9 18.1 36.1 31.3 VSX3E 10.0 opt. 27.8 24.1 12.1 48.1 41.7 VSX4E 10.0 27.8 24.1 12.1 48.1 41.7 VSX5E 15.0... -
Page 5: Tools
Vulcan recommends the water contain less than 60ppm of “total dissolved solids” (TDS) and have a PH factor between 7 to 8. These water properties can be achieved by using a properly maintained water softener. -
Page 6: Removal And Replacement Of Parts
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS REMOVAL AND REPLACEMENT OF PARTS B. Remove the screws that secure the flue to COVERS AND PANELS the tank and lift it off. WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. -
Page 7: Thermostats
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 2. Remove the screws at the bottom of panel. replaced. 5. Remove screws that secure the thermostat. 3. Remove the lower access panels on the right and left side of the unit to gain access to the lower compartment. - Page 8 VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 7. If replacing the high limit thermostat: 5) Pull the bulb from its holding sleeve and remove from the heater. A. Electric Models 1) Remove nut on capillary tube hold down clamp.
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Page 9: Timer
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 5. Remove the nuts that secure the heater to the TIMER tank and remove the heater from the unit. WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED. - Page 10 VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 3. Loosen the compression nuts on the flexible gas B. Loosen the compression nuts on the line then remove line from the gas solenoid “condenser feed” and “tank feed” water lines valve and manifold.
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Page 11: Gas Pressure Regulator
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS GAS PRESSURE REGULATOR FLAME SENSE PROBE (GAS) WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT CIRCUIT BOX. -
Page 12: Hot Surface Ignitor (Gas)
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS HOT SURFACE IGNITOR (GAS) GAS BURNER WARNING: DISCONNECT THE ELECTRICAL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT CIRCUIT BOX. -
Page 13: Gas Ignition Module
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 3. Manually drain steam generator tank if GAS IGNITION MODULE necessary, as outlined under "DRAIN TANK MANUALLY". WARNING: DISCONNECT THE ELECTRICAL 4. Disconnect the lead wire from each water level POWER TO THE MACHINE AT THE MAIN probe and then remove probes from tank. -
Page 14: Water Level Probes
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 5. Disconnect the steam lines on the top right and 7. Gas Model Only left side of the tank, the water fill tube, the drain A. Remove the burner assembly and place to line, then the delime line at the bottom left the side. -
Page 15: Fill And Cold Water Solenoid Valves
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 3. Unscrew probes from steam generator tank. 3. Cut the wire ties around “wire bundle” and trace the power wires for the solenoid valve being serviced back to there terminations and remove. 4. -
Page 16: Drain Valve
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 5. Use a hammer and punch to turn the stem DRAIN VALVE counterclockwise to remove the stem from the body. WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. - Page 17 VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS 5. Loosen the screws from the motor assembly NOTE: When re-installing, place flat sides of ball and lift up on the motor to remove it from the stem perpendicular to the inlet and outlet of the valve body.
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Page 18: Door
VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS Gasket DOOR 1. Open the door. WARNING: DISCONNECT THE ELECTRICAL 2. Remove screws from the gasket plate. POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT 3. - Page 19 VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS Handle Latch Assembly 1. Open the door. 1. Open the door. 2. Remove screws from the top and bottom of the 2. Remove screws from the top and bottom of the door.
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Page 20: Service Procedures And Adjustments
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST. -
Page 21: Drain Tank Manually
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS 2. Turn the thermostat adjustment stem fully MODEL APPROXIMATE clockwise for a starting position. TIME FOR STEAM TO ENTER COMPARTMENT ELECTRIC 5 sec. 13 sec. NOTE: If after increasing the thermostat setting, the ready light stays “on”... -
Page 22: Door Sealing Adjustment
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS To adjust: DOOR SEALING ADJUSTMENT 1. Reinstall the striker with the slot pointing 1. Check the door gasket quality. If damaged or upwards and “hand tighten” nut only. worn, replace as outlined under “DOOR”. 2. -
Page 23: Manifold Pressure Adjustment
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS minimum stated, then the manifold pressure can not MANIFOLD PRESSURE be set correctly. ADJUSTMENT 6. Once the correct pressure has been set, turn the power switch “off”, replace the adjustment WARNING: DISCONNECT THE ELECTRICAL screw cap and manifold pipe plug. -
Page 24: Flame Sense Probe (Gas)
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS 2. Perform a visual check to determine if the flame FLAME SENSE PROBE (GAS) sense probe is in the upper portion of flame. If the probe is bent or not in the upper portion of WARNING: THE FOLLOWING STEPS REQUIRE the flame then check for alignment and adjust POWER TO BE APPLIED TO THE UNIT DURING... -
Page 25: Hot Surface Ignitor (Gas)
VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS HOT SURFACE IGNITOR (GAS) HEATING ELEMENT (ELECTRIC) 1. Check to see if hot surface ignitor is operating WARNING: THE FOLLOWING STEPS REQUIRE during ignition trial by: POWER TO BE APPLIED TO THE UNIT DURING THE TEST. -
Page 26: Electrical Operation
VSX SERIES STEAMER - ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT FUNCTION 1A Delime Timer Board . . . Tracks the cumulative cooking hours by using a current sensor to monitor current flow through the cold water condenser solenoid lead, then signal’s operator to perform delime procedure after the steamer has operated in cook mode for a preset number of hours. - Page 27 VSX SERIES STEAMER - ELECTRICAL OPERATION 1S Power Switch ..Controls electrical power to the control circuit and delime circuit. 2S Door Switch ..Removes electrical power to the timer when the door is opened and the control thermostat is open.
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Page 28: Component Location
VSX SERIES STEAMER - ELECTRICAL OPERATION COMPONENT LOCATION Electric Models VSX3E, 4E & 5E VSX7E & 10E Page 28 of 40... -
Page 29: Gas Models
VSX SERIES STEAMER - ELECTRICAL OPERATION Gas Models VSX5G VSX 7G & 10G Page 29 of 40... -
Page 30: Water Level Control Operation
VSX SERIES STEAMER - ELECTRICAL OPERATION WATER LEVEL CONTROL OPERATION The water level control (WLC) has line voltage across terminals 11 and 12 which powers the primary side of the transformer. The secondary side of the transformer provides power to the control by a series path through chassis ground;... - Page 31 VSX SERIES STEAMER - ELECTRICAL OPERATION A. LLCO energizes. A. Product is inserted into steamer. 1) Contacts LLCO-1 open; LLCO-2 close. B. Door is closed. 2) LLCO LED lights. C. Time is dialed on the timer. 4. Water reaches LL (Low Level) probe. 3.
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Page 32: Gas Models
VSX SERIES STEAMER - ELECTRICAL OPERATION DELIME CYCLE A. Internal relay HL energize. B. HL LED lights. 1. Steamer is in a cook cycle where the delime board monitors the cook time. C. Internal relay coil HL locks through HL-1. 6. - Page 33 VSX SERIES STEAMER - ELECTRICAL OPERATION COOK CYCLE A. Power to pin 2 of water level control. 4. Water reaches high level probe. 1. Cook cycle can not start until the initial fill and preheat is completed and the door is closed. A.
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Page 34: Schematic Electric Steamers
VSX SERIES STEAMER - ELECTRICAL OPERATION SCHEMATIC ELECTRIC STEAMERS Page 34 of 40... -
Page 35: Wiring Diagram Electric Steamers
VSX SERIES STEAMER - ELECTRICAL OPERATION WIRING DIAGRAM ELECTRIC STEAMERS Page 35 of 40... -
Page 36: Schematic Gas Steamers
VSX SERIES STEAMER - ELECTRICAL OPERATION SCHEMATIC GAS STEAMERS Page 36 of 40... -
Page 37: Wiring Diagram Gas Steamers
VSX SERIES STEAMER - ELECTRICAL OPERATION WIRING DIAGRAM GAS STEAMERS Page 37 of 40... -
Page 38: Troubleshooting
VSX SERIES STEAMER - TROUBLESHOOTING TROUBLESHOOTING ALL MODELS WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST. - Page 39 VSX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Tank does not fill. 1. Water supply not on. 2. Fill solenoid 1SOL not opening or plugged. 3. Water level control malfunction (WLC). 4. Water level probes shorted to ground. Timer motor does not run. 1.
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Page 40: Gas Models Only
VSX SERIES STEAMER - TROUBLESHOOTING GAS MODELS ONLY SYMPTOM POSSIBLE CAUSES Burner won’t light. 1. Gas not “on”. 2. Low incoming gas pressure. 3. HSI not operating see “HOT SURFACE IGNITOR” in “SERVICE PROCEDURES AND ADJUSTMENTS”. 4. Unit not properly grounded and/or polarity of incoming power is incorrect.