Vulcan-Hart MHB24G, VHX24G5 manual Cooking Compartment Doors, Removal, Gasket

Page 21

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

NOTE: It may be necessary to use two clamps to draw the bottom of the heat exchanger close enough to be clamped. Start one clamp at a 3 o’clock position then install other clamp near the bottom. Once the bolts are tight enough, C- Clamp will fall away.

E.Install two bolts at the bottom and two bolts at the top on the heat exchanger flange and tighten the bolts a few turns at a time. Starting with the bottom bolts, tighten the bolts in an alternating pattern between the bottom and top for a flush mounting of the heat exchanger flange and an even compression of the gasket.

NOTE: If a bolt is not threading in properly by hand, clean out the threads with the proper size tap.

F.Once those bolts are tight, install the two bolts to the left and the two bolts to the right on the heat exchanger flange. On the left side, be sure to install the rectangular flue gas plate then tighten the bolts in an alternating pattern.

14.To install flue "transition" piece:

A.Clean the mating surfaces on the "transition" piece and the heat exchanger face.

B.Install new gasket on the "transition" piece then secure to the heat exchanger using the remaining bolts.

15.Starting at step 12, reverse procedure to install the remaining components.

16.Check for water leaks and proper operation.

COOKING COMPARTMENT

DOOR(S)

Removal

1.Remove top cover.

2.Open the door.

3.Pull hinge rod up.

4.Reverse the procedure to install, making sure the door bushings are in place.

Gasket

1.Open the door.

2.Remove screws from the gasket plate.

3.Pull the gasket plate out from the door housing and remove the gasket.

4.Position the new gasket on the gasket plate and reverse the procedure to install. Adjust the door as outlined in "DOOR SEALING ADJUSTMENT" under "COOKING COMPARTMENT".

NOTE: Do not over tighten gasket plate screws as this will compress the gasket excessively and interfere with proper door sealing.

NOTE: Damage to the gasket sealing surface, such as nicks or cuts, will cause steam leakage.

Page 21 of 68		F24700 (October 2001)

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Contents VHX24G Shown VHX Boiler Base Series High Efficiency GAS SteamersTable of Contents VHX Series Steamers Installation Maintenance Cleaning IntroductionGeneral Boiler Control Styles System Water Conditioning SpecificationsWater Supply ElectricalGas Supply ToolsStandard SpecialCabinet Base Boiler Steamer OperationCooking Compartment Controls VHX Series Steamers OperationBoiler Blowdown Steamer Shut OFF VHX Series Steamers Component Function Component FunctionBlowdown/Drain Ignition Control ModuleWater Level Steam Header AssemblyWater Inlet Valve manual Pressure Relief ValveSteam Solenoid Valve Compartment Pressure SwitchManifold Pressure Gauge Steam Supply ManifoldVHX Series Steamers Removal and Replacement of Parts Removal and Replacement of PartsComponent Locations Cabinet Base Boiler ControlsCabinet Base Boiler Controls Water Level Controls Main or Auxiliary Llco Relay BoardCooking Compartment Controls Water Level Gauge Assembly Pressure SwitchesBoiler Assembly Boiler Fill and Cold Water Condenser Solenoid Valves Pilot GAS Valve Main GAS ValveComplete Burner Assembly Burner Head AssemblyHeat Exchanger VHX Series Steamers Removal and Replacement of Parts Cooking Compartment Doors RemovalGasket Handle Latch AssemblyClean-Out Service Procedures and AdjustmentsBoiler InspectionDescaler Cathodic Protector Water Level Probe Housing BlowdownTest Water Level ControlsAuxiliary Low level Cut-Off Control Cycling High LimitSmall increments Fill and Cold Water Solenoid ValvesBoiler BLOWDOWN/DRAIN Solenoid Valve Inline Water Strainer CleaningMain Burner Ignition Checks Pressure Switch AdjustmentGAS Manifold Pressure Adjustment VHX Series Steamer Service Procedures and Adjustments AIR Pressure Switch Adjustment GAS Pilot Pressure Adjustment Pressure Readings Inches W.C GAS Manifold Pressure Adjustment Terminals Ignition Control Module ChecksSpark Verification Test Door Sealing Adjustment Intake Shut-Off Valve Adjustment Steam FlowCooking Compartment Cooking Compartment DoorsVHX Series Steamer Electrical Operation Door Latch AdjustmentLow Level Cut-Off & Differential Control Electrical OperationAuxiliary Low Level Cut-Off LED Legend Board Layout and LED LegendReset Engaged State C Boiler Operational Status LED IndicatorInitial Conditions State a Aux Water Level Satisfied State BK32 Close Air Pressure Switch Satisfied State DK51 Close Burner ON, Boiler Heating to generate steam State ENEW Style Controls Boiler Sequence of OperationInitial Fill and Preheat HL-LEDN14, N16, N17 go out N9, N10, N11, N12, N13 go outBoiler Blowdown/drain Water Refill After Initial FillVHX Series Steamer Electrical Operation Cooking Compartment Controls This page Intentionally Left Blank Models Built After 5/25/00 New Style Boiler Controls SchematicsVHX Series Steamer Electrical Operation Models Built Before 5/25/00 Old Style Boiler Controls Cooking Compartment Controls Wiring Diagrams VHX Series Steamer Electrical Operation Models Built Before 5/25/00 Old Style Boiler Controls VHX Series Steamer Electrical Operation Cooking Compartment Controls Troubleshooting VHX Series Steamer TroubleshootingBoiler Base Controls Symptom Possible Causes Adjustments Boiler blowdown solenoid valve clogged and not fully closing Boiler Base Procedures and Adjustments VHX Series Steamer Condensed Spare Parts List VHX Series Steamer Condensed Spare Parts ListNEW Style Controls only VHX24G, VHX24G5, MHB24G