Vulcan-Hart VSX24G Service Manual
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Vulcan-Hart VSX24G Service Manual

Vsx boiler base series convection steamer
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This Manual is prepared for the use of trained Vulcan Service
Technicians and should not be used by those not properly
qualified.
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.
The reproduction, transfer, sale or other use of this Manual,
without the express written consent of Vulcan, is prohibited.
This manual has been provided to you by ITW Food Equipment
Group LLC ("ITW FEG") without charge and remains the property
of ITW FEG, and by accepting this manual you agree that you will
return it to ITW FEG promptly upon its request for such return at
any time in the future.
A product of Vulcan-Hart
SERVICE MANUAL
VSX BOILER BASE SERIES
CONVECTION STEAMERS
(GAS, ELECTRIC, DIRECT AND REGENERATED)
- NOTICE -
3600 North Point Blvd Baltimore, MD 21222
VSX24D
ML-52827
VSX24E
ML-52164
VSX24G
ML-52163
VSX36D
ML-52830
VSX36E
ML-52829
VSX36G
ML-52360
VSX36R
ML-52831
VSX42DT
ML-52834
VSX42ET
ML-52833
VSX42GT
ML-52376
VSX42RT
ML-52835
F24627 (0916)

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Summary of Contents for Vulcan-Hart VSX24G

  • Page 1 ITW FEG, and by accepting this manual you agree that you will return it to ITW FEG promptly upon its request for such return at any time in the future. A product of Vulcan-Hart 3600 North Point Blvd Baltimore, MD 21222 F24627 (0916)

  • Page 2: Table Of Contents

    BOILER BLOWDOWN / DRAIN ..............41 SCHEMATICS, GAS STEAMERS, BOILER CONTROLS VSX24G, 36G AND 42GT ..... 42...
  • Page 3 VSX BOILER BASE SERIES CONVECTION STEAMERS WIRING DIAGRAMS, GAS STEAMERS, BOILER CONTROLS VSX24G, 36G AND 42GT ....47 SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLS VSX24E, 36E AND 42ET ....55 WIRING DIAGRAMS, ELECTRIC STEAMERS, BOILER CONTROLS VSX24E, 36E AND 42ET .

  • Page 4: General

    NUMBER OF PANS PER DEPTH (INCHES) COMPARTMENT Pan Size 12" x 20" Boiler Code Descriptions Vulcan-Hart incorporates redundant controls in Specifications compliance with California Code (Cal-Code) and CSD-1 as an option on steam equipment when Gas Steamers required by state and/or local building code requirements.
  • Page 5 VSX BOILER BASE SERIES CONVECTION STEAMERS - GENERAL Electric Steamers AMPERAGE 1 PHASE 3 PHASE 3 PHASE - 4 WIRE MODEL TOTAL KW 220/380V and 208V 240V 208V 240V 480V 240/415V VSX24E VSX36E VSX42ET *Standard Steam Supply reducing valve. To ensure rapid heat up of heavy cold loads, the steam supply line must be sized to maintain Dry steam must be provided to the steamer.

  • Page 6: Tools

    VSX BOILER BASE SERIES CONVECTION STEAMERS - GENERAL Supply connection cold Total dissolved solids (TDS)* less than 60 ppm Total alkalinity less than 20 ppm Silica less than 13 ppm Chloride less than 30 ppm PH factor 7 to 8 (*17.1 ppm = 1 grain of hardness) the inside of the boiler, heating elements, thermostat Tools...

  • Page 7: Steamer Operation

    VSX BOILER BASE SERIES CONVECTION STEAMERS - STEAMER OPERATION STEAMER OPERATION The steamer and its parts are hot. Use care when operating, cleaning or servicing the steamer. The cooking compartment contains live steam. Stay clear when opening each door. Turn knob on gas combination control valve Cabinet Base Boilers to ON.

  • Page 8: Boiler Blowdown And Steamer Shut Off

    VSX BOILER BASE SERIES CONVECTION STEAMERS - STEAMER OPERATION After approximately 15 minutes, steam NOTE: On older models equipped with a manual should be present for cooking product. “ball” type blowdown valve, the valve must be closed Observe that the boiler pressure gauge for the boiler to fill.

  • Page 9: Cooking Compartment Controls

    VSX BOILER BASE SERIES CONVECTION STEAMERS - STEAMER OPERATION Manual Blowdown (All Models) NOTE: To silence buzzers, turn timer knobs to off position. Turn power switch OFF. When timer knobs reach "0" Open blowdown valve located on the bottom front of the cabinet base. •...

  • Page 10: Component Function And Location

    VSX BOILER BASE SERIES CONVECTION STEAMERS - COMPONENT FUNCTION AND LOCATION COMPONENT FUNCTION AND LOCATION The steamer and its parts are hot. Use care when operating, cleaning or servicing the steamer. The cooking compartment contains live steam. Stay clear when opening each door. The steamer and its parts are hot.
  • Page 11 VSX BOILER BASE SERIES CONVECTION STEAMERS - COMPONENT FUNCTION AND LOCATION Fig. 6 Water Level Gauge Assembly. The gauge permits cause failure of controls and the steamer. Warranty visual confirmation that water level is being does not cover malfunction due to poor water maintained in the boiler during operation.
  • Page 12 VSX BOILER BASE SERIES CONVECTION STEAMERS - COMPONENT FUNCTION AND LOCATION • They will shut off the heat source to the boiler if unwanted particles out of the system. A "Y" strainer the water level drops too low. should be inserted upstream of the fill solenoid valve. NOTE: Controls may not function and serious Power Switch.

  • Page 13: Cooking Compartment Controls

    VSX BOILER BASE SERIES CONVECTION STEAMERS - COMPONENT FUNCTION AND LOCATION for heat unless the steamer will not be in use for an Buzzer (Fig. 8). This signals end of a cook cycle, must extended period. If the pilot flame goes out, wait 5 be turned off manually.

  • Page 14: Service Procedures

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES SERVICE PROCEDURES NOTE: Boiler water capacities vary between seven to Cabinet Bases nine gallons for both gas and electric models depending on the boiler size and BTU/KW rating. Certain procedures in this section NOTE: If deliming solution accidently comes in require electrical test or measurements while power is contact with steamer components, lightly rinse off with...

  • Page 15: Water Level Controls

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Clean the seating surfaces for the hand hole Top compartments are to be in the OFF position. gasket and then install a new gasket. Position Turn the boiler switch ON and open water valve and tighten the hand hole plate.

  • Page 16: Water Level Gauge Assembly

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES NOTE: If water is in the boiler but is not being detected Remove the bolted cover over the sensor by the water level probes, the probes may need cluster. cleaned and/or boiler delimed. Disconnect the wire from the probe.

  • Page 17: High Limit Thermostat

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES control. They are identical switches, differing only in Remove thermostat (bi-metallic disk type) and their settings. inspect flat surface of thermostat for corrosion or rust. Remove the boiler control box cover to access the two pressure switches.

  • Page 18: Fill And Cold Water Solenoid Valves

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Lift the top off the boiler base and place to Remove the coil assembly from the valve the side. stem by lifting up on the retaining cap at the top of the solenoid valve and sliding the Remove the remaining plumbing and metal cover plate off.

  • Page 19: Blowdown Solenoid Valve Does Not Drain

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Detach, remove, and thoroughly clean the water Remove any debris found on the sealing level probe and canister assembly to remove surfaces. scalants and lime build up. Reassemble and reinstall the valve. If cleaning does not resolve the problem, replace If valve still malfunctions, replace it and recheck the water level probes and canister assembly.

  • Page 20: Strainers

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Unbolt and remove the hand hole cover plate and • One or more electric heating elements gasket assembly. malfunctioning. Examine interior of boiler and if scalants and/or • One or more magnetic contactors not activating lime build up is apparent, perform a boiler clean- to power heating elements.

  • Page 21: Heat - Gas Models

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Install the pressure regulating valve cap. Tighten it handtight. HEAT - GAS MODELS Pilot, Thermocouple, Gas Combination Control Valve, Main Burners When heated, the pilot thermocouple supplies a millivolt signal (DC) to an internal solenoid valve on the gas combination control valve.
  • Page 22 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Check the thermocouple output voltage (DC millivolts) Check for proper operation. as follows: Shut off the gas before servicing the Use a VOM and adapter to take a closed circuit unit. reading with the pilot on.
  • Page 23 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Automatic Ignition Systems Pilot Voltage. 24VAC will be present on terminal When the main power switch is turned ON and the #3 at the instant an input voltage is supplied to ignition control modules reset switch is in the ON the module.

  • Page 24: Manifold Pressure Adjustment

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Turn the gas combination control valve and the main power switch to ON. Observe the manometer pressure reading and compare to the pressure chart near the end of this procedure. If other appliances are connected to the same gas line: Turn them all ON.
  • Page 25 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Magnetic Contactor Measure the voltage at the heating element A noisy contactor (hum or chatter) is generally due to terminals and verify it against the data plate enough dust or dirt on the armature pole faces or voltage.

  • Page 26: Heat - Direct Steam Models

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AMPS PER LINE RESISTANCE NUMBER OF KW PER PER ELEMENT VOLTAGE TOTAL KW ELEMENTS ELEMENT 1 PH 3 PH 3 PH (OHMS) 14.42 19.20 76.80 *220 / 380 19.20 240 / 415 10.5 12.36 14.40...

  • Page 27: Cooking Compartment

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES • Must be set for a discharge pressure of 15 psi. Cooking Compartment Replace a steam coil as follows: Certain procedures in this section Remove require electrical test or measurements while power is Disconnect the union in steam supply line to applied to the machine.

  • Page 28: Water Accumulating In Compartment

    VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES NOTE: Older steamer models have a movable blade. If the steamer ready light is on, then proceed to When closed, the blade reacts as a guillotine that Step 6. should be free to move fully down into the valve pocket If the boiler is off, then turn main power switch ON (projection at bottom of valve) so that the pierced hole and allow boiler to heat up until steamer ready...
  • Page 29 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Install Adjust Inspect the door and steamer to ensure the Check the door gasket quality. door bushings are in place. • If unacceptable, replace the gasket. Align the door in the steamer. •...
  • Page 30 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Fig. 20 Pull the inner door panel out from the door housing with the gasket plate and gasket still attached. Remove the side edge screws (Fig. 21) that secure the latch mechanism in the door. Remove the latch from the door.
  • Page 31 VSX BOILER BASE SERIES CONVECTION STEAMERS - SERVICE PROCEDURES Once the proper slot alignment has been set, hold the striker close to its base using a rag and vise grips. Tighten the striker nut hand tight plus a quarter turn. Be careful not to damage the striker slot when tightening or door may not latch properly.

  • Page 32: Electrical Operation

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION ELECTRICAL OPERATION Water Level Controls SOLID STATE - LOW LEVEL CUT OFF AND DIFFERENTIAL CONTROL The steamer is equipped with three water level sensing probes (High Level [HL], Low Level [LL], and Low Level Cut Off [LLCO]) and a single Water Level Control (WLC) board.

  • Page 33: Electro Mechanical - Low Level Cut Off And Differential Control

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Fig. 26 When the boiler stops filling, press the manual reset button on the boiler control box. On CSD-1 models, this energizes the low water relay, turns off the low water light and energizes the heat source auxiliary control.

  • Page 34: Electro Mechanical - Auxiliary Low Level Cut Off

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Fig. 27 When the water level reaches the LL probe, power to A single LLCO probe identical to the LLCO probe on terminal 7 on the 1D1DO control will be present but no the main low level cut-off control is connected to the switching occurs.

  • Page 35: Sequence Of Operations

    Control (cycling) pressure switch CLOSED. automatic ignition, solid state water level controls and the CSD-1 (code) option. Refer to Schematics, Gas • High limit pressure switch CLOSED. Steamers, Boiler Controls VSX24G, 36G and 42GT. • CWC thermostat OPEN. Initial Fill and Preheat •...
  • Page 36 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION • Water Level Control (WLC) is powered ON. NOTE: LLCO relays will remain energized and LLCO LED’S will remain ON until the water level drops below • HL relay is energized, HL-3 (N.O.) the LLCO probes or the power switch is turned OFF.

  • Page 37: Cook Cycle

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Cooking compartment pressure switch closes as • Boiler water level drops below the boiler steam pressure reaches 3 PSI LLCO probes for the water level and (approximately 14 minutes). the auxiliary low level cut-off controls which then de-energizes the LLCO •...

  • Page 38: Water Refill (After Initial Fill)

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION • Green READY light turns ON. • Power is removed from all components except CWC thermostat and CWC solenoid • Timer motor de-energized. valve. The CWC thermostat cycles as Timer manually turned off. necessary to lower the discharge temperature of the water and condense •...
  • Page 39 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION • Water Level Control (WLC) is powered. • Manual reset switch contacts (N.O.) close and lock. • HL relay is energized, HL-3 (N.O.) contacts close and HL LED turns ON. • Heater contactors are energized, suppling power to the heating elements.

  • Page 40: Cook Cycle

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION • Boiler pressurizes to 15 PSI, causing present to condense steam/hot water and steam the high limit pressure switch to open. vapors exit the floor drain. At that time, the auxiliary heating Time expires on timer.

  • Page 41: Boiler Blowdown / Drain

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION The water refill cycle will occur whenever the • Power is removed from all components water level is below the LL probe and will not except CWC thermostat and solenoid valve. affect the operation of either the preheat or cook The CWC thermostat cycles as necessary cycle.

  • Page 42: Schematics, Gas Steamers, Boiler Controls Vsx24G, 36G And 42Gt

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Schematics, Gas Steamers, Boiler Controls VSX24G, 36G and 42GT MANUAL IGNITION, STANDARD CONTROLS F24627 (0916) Page 42 of 82...
  • Page 43 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION ELECTRONIC IGNITION, STANDARD CONTROLS Page 43 of 82 F24627 (0916)
  • Page 44 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION MANUAL IGNITION, CSD-1 CODE CONTROLS F24627 (0916) Page 44 of 82...
  • Page 45 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION ELECTRONIC IGNITION, CSD-1 CODE CONTROLS Sheet 1 Page 45 of 82 F24627 (0916)
  • Page 46 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 46 of 82...

  • Page 47: Wiring Diagrams, Gas Steamers, Boiler Controls Vsx24G, 36G And 42Gt

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Wiring Diagrams, Gas Steamers, Boiler Controls VSX24G, 36G and 42GT MANUAL IGNITION, STANDARD CONTROLS Sheet 1 Page 47 of 82 F24627 (0916)
  • Page 48 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 48 of 82...
  • Page 49 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION ELECTRONIC IGNITION, STANDARD CONTROLS Sheet 1 Page 49 of 82 F24627 (0916)
  • Page 50 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 50 of 82...
  • Page 51 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION MANUAL IGNITION, CSD-1 CONTROLS Sheet 1 Page 51 of 82 F24627 (0916)
  • Page 52 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 52 of 82...
  • Page 53 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION ELECTRONIC IGNITION, CSD-1 CONTROLS Sheet 1 Page 53 of 82 F24627 (0916)
  • Page 54 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 54 of 82...

  • Page 55: Schematics, Electric Steamers, Boiler Controls Vsx24E, 36E And 42Et

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Schematics, Electric Steamers, Boiler Controls VSX24E, 36E and 42ET AUTO BLOWNDOWN, STANDARD CONTROLS Fig. 42 Page 55 of 82 F24627 (0916)
  • Page 56 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWNDOWN, CAL-CODE CONTROLS Fig. 43 F24627 (0916) Page 56 of 82...
  • Page 57 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWNDOWN, STANDARD CONTROLS Fig. 44 Page 57 of 82 F24627 (0916)
  • Page 58 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWNDOWN, CAL-CODE CONTROLS Fig. 45 F24627 (0916) Page 58 of 82...

  • Page 59: Wiring Diagrams, Electric Steamers, Boiler Controls Vsx24E, 36E And 42Et

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Wiring Diagrams, Electric Steamers, Boiler Controls VSX24E, 36E and 42ET AUTO BLOWDOWN, STANDARD CONTROLS Sheet 1 Page 59 of 82 F24627 (0916)
  • Page 60 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 60 of 82...
  • Page 61 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN, CAL-CODE CONTROLS Sheet 1 Page 61 of 82 F24627 (0916)
  • Page 62 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 62 of 82...
  • Page 63 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN, STANDARD CONTROLS Sheet 1 Page 63 of 82 F24627 (0916)
  • Page 64 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 64 of 82...
  • Page 65 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN, STEP DOWN TRANSFORMER, STANDARD CONTROLS Sheet 1 Page 65 of 82 F24627 (0916)
  • Page 66 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 66 of 82...
  • Page 67 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN, STEP DOWN TRANSFORMER, CAL-CODE CONTROLS (2 CONTACTORS) Sheet 1 Page 67 of 82 F24627 (0916)
  • Page 68 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 68 of 82...
  • Page 69 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN, STEP DOWN TRANSFORMER, CAL-CODE CONTROLS (4 CONTACTORS) Sheet 1 Page 69 of 82 F24627 (0916)
  • Page 70 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Sheet 2 F24627 (0916) Page 70 of 82...

  • Page 71: Wiring Diagrams, Electric Heater Circuits Vsx24E, 36E And 42Et

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Wiring Diagrams, Electric Heater Circuits VSX24E, 36E and 42ET STANDARD AND CAL-CODE / CSD-1 CONTROLS (NEWER MODELS) Fig. 58 Page 71 of 82 F24627 (0916)
  • Page 72 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION STANDARD AND CAL-CODE CONTROLS (OLDER MODELS) Fig. 59 F24627 (0916) Page 72 of 82...

  • Page 73: Schematic, Direct Steamers, Cabinet Base Vsx24D, 36D And 42Dt

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION 3 PHASE / 4 WIRE (OLDER MODELS) Fig. 60 Schematic, Direct Steamers, Cabinet Base VSX24D, 36D and 42DT Page 73 of 82 F24627 (0916)

  • Page 74: Wiring Diagram, Direct Steamers, Cabinet Base Vsx24D, 36D And 42Dt

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION See Wiring Diagram, All Models - Compartment Controls. Wiring Diagram, Direct Steamers, Cabinet Base VSX24D, 36D and 42DT See Wiring Diagram, All Models - Compartment Controls. F24627 (0916) Page 74 of 82...

  • Page 75: Wiring Diagrams, Regenerated Steamers, Boiler Controls Vsx36R

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Wiring Diagrams, Regenerated Steamers, Boiler Controls VSX36R and 42RT (Older Models) MANUAL BLOWDOWN Fig. 61 Page 75 of 82 F24627 (0916)
  • Page 76 VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION AUTO BLOWDOWN Fig. 62 F24627 (0916) Page 76 of 82...

  • Page 77: Schematic All Models - Compartment Controls

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Schematic All Models - Compartment Controls Fig. 63 Page 77 of 82 F24627 (0916)

  • Page 78: Wiring Diagram, All Models - Compartment Controls

    VSX BOILER BASE SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION Wiring Diagram, All Models - Compartment Controls Fig. 64 F24627 (0916) Page 78 of 82...

  • Page 79: Troubleshooting

    VSX BOILER BASE SERIES CONVECTION STEAMERS - TROUBLESHOOTING TROUBLESHOOTING All Models 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 and follow lockout / tagout procedures, attach test equipment and reapply power to the test.

  • Page 80: Vulcan

    VSX BOILER BASE SERIES CONVECTION STEAMERS - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Problem with auto blowdown timer (older models). Power switch malfunction. Pressure reducing valve malfunction or needs cleaned (direct or regenerated units only). Low or no steam supply to unit (direct or regenerated units only).
  • Page 81 VSX BOILER BASE SERIES CONVECTION STEAMERS - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Gas not on. Ignition control module reset switch in the OFF position or malfunctioning. Ignition module not receiving power. Check ignition module transformer for 24VAC output to module on automatic ignition systems.
  • Page 82 VSX BOILER BASE SERIES CONVECTION STEAMERS - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Ceramic flame rod insulator on ignitor cracked or damaged from extreme heat. Ignition module not receiving power. Ignition module malfunction. F24627 (0916) Page 82 of 82...

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