Vulcan-Hart VHX24G Wartungshandbuch

A product of VULCAN-HART LOUISVILLE, KY 40201-0696F24700 (October 2001) - NOTICE -This Manual is prepared for the use of trained Vulcan ServiceTechnic

VHX SERIES STEAMERS - COMPONENT FUNCTIONF24700 (October 2001) Page 10 of 68COMPONENT FUNCTIONCABINET BASE BOILER CONTROLSPower Switch (ON/OFF)...

VHX SERIES STEAMERS - COMPONENT FUNCTIONF24700 (October 2001)Page 11 of 68Relay Board... Provides a centralized location for wire har

VHX SERIES STEAMERS - COMPONENT FUNCTIONF24700 (October 2001) Page 12 of 68COOKING COMPARTMENT CONTROLSThe upper section of the steamer consists of t

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001)Page 13 of 68REMOVAL AND REPLACEMENT OF PARTSCOMPONENT LOCATIONSCabinet Ba

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001) Page 14 of 68Cabinet Base Boiler Controls Continued

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001)Page 15 of 68Cooking Compartment ControlsWATER LEVEL CONTROLS(MAIN OR AUXI

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001) Page 16 of 68WATER LEVEL GAUGEASSEMBLYWARNING: DISCONNECT THE ELECTRICALP

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001)Page 17 of 68a. From the bottom right side, raisethe boiler two to three i

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001) Page 18 of 68BURNER HEAD ASSEMBLYWARNING: DISCONNECT THE ELECTRICALPOWER

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001)Page 19 of 68HEAT EXCHANGERWARNING: SHUT OFF THE GAS BEFORESERVICING THE U

VHX SERIES STEAMERSF24700 (October 2001) Page 2 of 68TABLE OF CONTENTSGENERAL...

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001) Page 20 of 6812. For clearance of the heat exchanger only,remove the drai

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001)Page 21 of 68NOTE: It may be necessary to use two clampsto draw the bottom

VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTSF24700 (October 2001) Page 22 of 68Handle1. Open the door.2. Remove screws from the top and bot

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 23 of 68SERVICE PROCEDURES AND ADJUSTMENTSWARNING: CERTAIN PROCEDURE

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 24 of 68WARNING: READ AND FOLLOW THEINSTRUCTIONS FOR THE DE-LIMING

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 25 of 68used, a frequent interval should be used. Thisblowdown proce

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 26 of 68C. Verify LED’s on the water level controlboard, HL LED sho

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 27 of 68boiler shell, remove and clean theAux LLCO probe.a. Replace

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 28 of 68Mechanical Pressure relief valve factory set toapproximatel

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 29 of 68D. Check ports in valve body.9. Reverse procedure to install

VHX SERIES STEAMERSF24700 (October 2001)Page 3 of 68Air Pressure Switch Adjustment ... 33Gas Pil

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 30 of 68MAIN BURNER IGNITIONCHECKSThe complete gas burner assembly

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 31 of 68a. If ignitor sparks and pilot lights,proceed to step 7.b. I

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 32 of 68

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 33 of 68AIR PRESSURE SWITCHADJUSTMENTThe air pressure switch senses

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 34 of 68c. Replace the orifice, pressureswitch and connect the lead

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 35 of 684. After the main burner lights, allow the boiler toreach op

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 36 of 68GAS MANIFOLD PRESSUREADJUSTMENTWARNING: DISCONNECT THE ELEC

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 37 of 687. Once the correct pressure has been set, turnthe gas suppl

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001) Page 38 of 68Spark Verification Test1. Turn the power switch OFF.2. Chec

VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTSF24700 (October 2001)Page 39 of 68COOKING COMPARTMENTNOTE: For access to compartment controls,

VHX SERIES STEAMERS - GENERALF24700 (October 2001) Page 4 of 68GENERALINSTALLATIONRefer to the Installation and Operation Manual fordetailed installa

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 40 of 68Door Latch AdjustmentShould the cooker door jam and can not be opened,DO

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 41 of 68ELECTRICAL OPERATIONWATER LEVEL CONTROLSLow Level Cut-Off & Differenti

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 42 of 68Auxiliary Low Level Cut-OffThis control serves as a safety backup to the

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 43 of 68RELAY BOARDBoard Layout and LED LegendThe relay board Provides a centraliz

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 44 of 68Boiler Operational Status (LED Indicator)Use the tables below to determin

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 45 of 68LEDSTATUSDESCRIPTION ELECTRICAL COMPONENTS CONDITIONON OFFN1 X same as “st

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 46 of 68SEQUENCE OF OPERATIONNEW STYLE CONTROLS - BOILERThis sequence of operatio

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 47 of 68NOTE: Relay K4 remains energized throughK4(1) N.O. locking circuit.1)N8 go

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 48 of 68upper and lower set point limits. Thecycling pressure switch continues to

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 49 of 683. Water level reaches LLCO (low water level cut-off) probe for the water

VHX SERIES STEAMERS - GENERALF24700 (October 2001)Page 5 of 68Boiler Control StylesVHX Steamers manufactured using the old style boiler controls ende

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 50 of 68upper and lower set point limits. Thecycling pressure switch continues to

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 51 of 68- THIS PAGE INTENTIONALLY LEFT BLANK -

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 52 of 68SCHEMATICSModels Built After 5/25/00 (New Style Boiler Controls)

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 53 of 68

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 54 of 68Models Built Before 5/25/00 (Old Style Boiler Controls)

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 55 of 68Cooking Compartment Controls

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 56 of 68WIRING DIAGRAMSModels Built After 5/25/00 (New Style Boiler Controls)

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 57 of 68

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 58 of 68Models Built Before 5/25/00 (Old Style Boiler Controls)

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001)Page 59 of 68

VHX SERIES STEAMERS - GENERALF24700 (October 2001) Page 6 of 68WATER CONDITIONINGFurnishing the boiler with treated water to reducescale formation is

VHX SERIES STEAMER - ELECTRICAL OPERATIONF24700 (October 2001) Page 60 of 68Cooking Compartment Controls

VHX SERIES STEAMER - TROUBLESHOOTING F24700 (October 2001)Page 61 of 68TROUBLESHOOTINGBOILER BASE CONTROLSWARNING: CERTAIN PROCEDURES IN THIS SECTION

VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSESF24700 (October 2001)Page 62 of 68Blower operating, no pilot gas flow. 1. Main gas supply

VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSESF24700 (October 2001)Page 63 of 68Gas odor. 1. Leaks in pipe fitting connections or compo

VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSESF24700 (October 2001)Page 64 of 68Boiler Slow to Pressurize(over 15 min. to achieve opera

VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSESF24700 (October 2001)Page 65 of 68Steam output low or slow cooking. 1. Cooking Compartmen

VHX SERIES STEAMER - TROUBLESHOOTING F24700 (October 2001) Page 66 of 68COOKING COMPARTMENT CONTROLSSYMPTOM POSSIBLE CAUSESCooking compartments do no

VHX SERIES STEAMERF24700 (October 2001)Page 67 of 68- NOTES -

VHX SERIES STEAMER - CONDENSED SPARE PARTS LISTF24700 (October 2001) Printed in U.S.A.CONDENSED SPARE PARTS LISTNEW STYLE CONTROLS ONLYVHX24G, VHX24G5

VHX SERIES STEAMERS - GENERALF24700 (October 2001)Page 7 of 68Gas SupplyMODELINPUT(BTU/HR)MANIFOLDPRESSURE(INCHES W.C.)PILOT PRESSURE(INCHES W.C.) LI

VHX SERIES STEAMERS - OPERATIONF24700 (October 2001) Page 8 of 68STEAMER OPERATIONCABINET BASE BOILEREnsure that all utility connections to the steam

VHX SERIES STEAMERS - OPERATIONF24700 (October 2001)Page 9 of 681. With both timer knobs at the off position, openthe compartment doors and observe t