Manuals / Vulcan-Hart / Kitchen Appliance / Electric Steamer

Vulcan-Hart ML-126853, ML-126857 manual Vhx Boiler Base Series High Efficiency, Electric Steamer

Models: ML-126852 MHB24E VHX24E5 ML-126853 ML-126857

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SERVICE MANUAL

SERVICE MANUAL

VHX BOILER BASE SERIES

HIGH EFFICIENCY

ELECTRIC STEAMER

VHX24E ML-126852

VHX24E5 ML-126853

MHB24E ML-126857 (BASE ONLY)

VHX24E SHOWN

- 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.

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.

For additional information on Vulcan-Hart or to locate an authorized parts and service provider in your area, visit our website at www.vulcanhart.com.

A product of VULCAN-HART	LOUISVILLE, KY 40201-0696
	F25154 (February 2004)

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Vulcan-Hart ML-126853, ML-126857 manual Vhx Boiler Base Series High Efficiency, Electric Steamer, VHX24E SHOWN NOTICE

Contents

ELECTRIC STEAMER VHX BOILER BASE SERIES HIGH EFFICIENCYVHX24E SHOWN NOTICE VHX24E ML-126852 VHX24E5 ML-126853TABLE OF CONTENTS VULCAN VHX SERIES STEAMERSPage 3 of F25154 FebruaryGENERAL INSTALLATION, OPERATION AND CLEANINGINTRODUCTION Steam CookingWATER CONDITIONING SPECIFICATIONSBoiler Code Descriptions Boiler PressureElectrical TOOLSStandard SpecialPRESSURE SWITCH CONTROL BOX COMPONENTS REMOVAL AND REPLACEMENT OF PARTSMAIN CONTROL BOX COMPONENTS LEFT SIDE VIEW SHOWN WATER LEVEL GAUGE ASSEMBLYHEATING ELEMENTS HEATING ELEMENT MOUNTING PLATE RIGHT SIDE VIEW SHOWN BOILER ASSEMBLYLEFT SIDE VIEW SHOWN LEFT SIDE VIEW SHOWN DESCALER Cathodic ProtectorLEFT SIDE VIEW SHOWN Removal COOKING COMPARTMENT DOORSGasket HandleLatch Assembly Clean-Out SERVICE PROCEDURES AND ADJUSTMENTSBOILER InspectionWATER LEVEL CONTROLS TEST WATER LEVEL PROBE HOUSING BLOWDOWNMain Water Level Control Auxiliary Low level Cut-OffControl CYCLING PRESSURE SWITCH ADJUSTMENT HIGH LIMIT PRESSURE SWITCH ADJUSTMENT COLD WATER CONDENSER THERMOSTAT ADJUSTMENT HEATING ELEMENT TEST Intake Shut-OffValve Adjustment Steam FlowCOOKING COMPARTMENT Door Latch Adjustment Door Sealing AdjustmentCycling Pressure Switch Reset Switch ManualHigh Limit Pressure Switch ELECTRICAL OPERATIONCOOKING COMPARTMENT CONTROLS Compartment Pressure SwitchBlowdown/Drain Steam Solenoid ValveBoiler Base Controls COMPONENT LOCATIONSVHX SERIES STEAMER - ELECTRICAL OPERATION Boiler Base Controls ContinuedPage 27 of F25154 FebruaryVHX SERIES STEAMER - ELECTRICAL OPERATION Cooking Compartment ControlsF25154 February Page 28 ofLow Level Cut-Off& Differential Control WATER LEVEL CONTROLSAuxiliary Low Level Cut-Off RELAY BOARD Layout, Legend & Diagnostic Test PointsVHX SERIES STEAMER - ELECTRICAL OPERATION SchematicF25154 February Page 32 ofInitial Fill and Preheat SEQUENCE OF OPERATIONBoiler Blowdown/drain Water Refill After Initial Fill5.Timer manually turned off A.Contacts 1/4 open 4.Time expires on timerB.Alarm Buzzer de-energizedand stops buzzing VHX SERIES STEAMER - ELECTRICAL OPERATIONVHX SERIES STEAMER - ELECTRICAL OPERATION SCHEMATICSBoiler Base Controls F25154 FebruaryCooking Compartment Controls VHX SERIES STEAMER - ELECTRICAL OPERATIONPage 37 of F25154 FebruaryVHX SERIES STEAMER - ELECTRICAL OPERATION WIRING DIAGRAMSBoiler Base Controls F25154 FebruaryPage 39 of VHX SERIES STEAMER - ELECTRICAL OPERATIONF25154 February VHX SERIES STEAMER - ELECTRICAL OPERATION Heating Element CircuitsF25154 February Page 40 ofCooking Compartment Controls VHX SERIES STEAMER - ELECTRICAL OPERATIONPage 41 of F25154 FebruarySYMPTOM TROUBLESHOOTINGBOILER BASE CONTROLS POSSIBLE CAUSESSYMPTOM VHX SERIES STEAMER - TROUBLESHOOTINGPOSSIBLE CAUSES SYMPTOM VHX SERIES STEAMER - TROUBLESHOOTINGPOSSIBLE CAUSES SYMPTOM COOKING COMPARTMENT CONTROLSPOSSIBLE CAUSES F25154 February VHX SERIES STEAMERPage 46 of Page 47 of VHX SERIES STEAMERF25154 February VHX24E, VHX24E5, MHB24E CONDENSED SPARE PARTS LISTPART NUMBER DESCRIPTION