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Vulcan-Hart VHX24E manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    A product of VULCAN-HART LOUISVILLE, KY 40201-0696 F25154 (February 2004) - NOTICE - This Manual is prepared for the use of trained Vulcan Service Technicians and s hould 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 ma[...]

  • Page 2

    VHX SERIES STEAMERS F25154 (February 2004) Page 2 of 48 TABLE OF CONTENTS G E N E R A L ................................................................................ 4 Installation, Operation and Cleaning ........................................................ 4 Introduction ......................................................................[...]

  • Page 3

    VHX SERIES STEAMERS F25154 (February 2004) Page 3 of 48 E L E C T R I C A L O P E R A T I O N .................................................................. 2 4 Component Function ................................................................... 2 4 C a b i n e t B a s e B o i l e r C o n t r o l s ............................................[...]

  • Page 4

    VHX SERIES STEAMERS - GENERAL F25154 (February 2004) Page 4 of 48 GENERAL INSTALLATION, OPERATION AND CLEANING Refer to the Installation and Operation Manual for specific instructions. INTRODUCTION Steam Cooking Convection cooking in pressure-less steaming compartments will steam cook fresh foods or will steam defrost and cook frozen foods providin[...]

  • Page 5

    VHX SERIES STEAMERS - GENERAL F25154 (February 2004) Page 5 of 48 Boiler Code Descriptions Vulcan-Hart incorporates redundant controls in compliance with the CSD-1 controls and safety devices for boiler construction on the high efficiency steamer models. A description of the code is listed below. CSD-1 Construction - Redundant controls in the elect[...]

  • Page 6

    VHX SERIES STEAMERS - COMPONENT FUNCTION F25154 (February 2004) Page 6 of 48 Electrical MODELS TOTA L KW AM P ER AG E 1 PHASE 3 PHA SE 208V 240V 208V 240V 480V VHX24E, VHX24E5, MHB24E 24 116 100 67 58 29 36 --- --- 100 87 44 42 --- --- 117 --- --- 48 --- --- --- 116 58 NOTES: 1. Amperage values in the table are nominal. Tolerance is +5/-10%. 2. Vol[...]

  • Page 7

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 7 of 48 REMOVAL AND REPLACEMENT OF PARTS PRESSURE SWITCH CONTROL BOX COMPONENTS WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. CAUTION: Certain components in this system are subj ect to damage by electrostatic discharg[...]

  • Page 8

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 8 of 48 4) Disconnect lead wires from other components as necessary then remove pressure switch mounting panel. 5) Remove screws securing switch to panel. B. High limit pressure switch. 1) Disconnect compression fittings from switch then remove from box. C. Boiler fi[...]

  • Page 9

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 9 of 48 LEFT SIDE VIEW SHOWN 4. To remove: A. Contactors. 1) Release catch at the base of contactor and remove from DIN rail. B. Relays. 1) Remove from socket. C. Relay Board. 1) Compress locking tab on the board mounting standoffs and remove control board. 5. Revers[...]

  • Page 10

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 10 of 48 B. Insert one end of glass tube into top gauge fitting then align opposite end of tube with bottom gauge fitting. C. Lower the glass tube into bottom gauge fitting then center the tube between top & bottom gauge fittings. D. Hold glass tube in place and [...]

  • Page 11

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 11 of 48 HEATING ELEMENT MOUNTING PLATE WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove heating elements as outlined under HEATING ELEMENTS. 2. Loosen mounting hardware securing control panel to frame and lowe[...]

  • Page 12

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 12 of 48 RIGHT SIDE VIEW SHOWN LEFT SIDE VIEW SHOWN C. Position heating element mounting plate with mounting studs for the element cover at the top. NOTE: When installing heating element mounting plate , install and tighten the mounting bolts as indicated to ensure t[...]

  • Page 13

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 13 of 48 LEFT SIDE VIEW SHOWN LEFT SIDE VIEW SHOWN 18. Separate union at boiler drain. 19. On models with cooking compartments: A. Remove the left and right access panels between the cooking compartments and boiler base. B. Disconnect flexible steam supply line from [...]

  • Page 14

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 14 of 48 3. To install: A. On the two replacement descalers, stretch the coiled wire (cathode) at the top to elongate the wire then form an open loop. B. Hang the descalers on the front horizontal support rod; one to the left of the heating elements and one to the ri[...]

  • Page 15

    VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS F25154 (February 2004) Page 15 of 48 4. Remove the nuts and spacers from the handle screws and remove the handle from the door. NOTE: When installing the spacers, the smaller diameter fits into the slot in the door and the latch lever must rest on top of the handle latch screw. 5. Reverse proce[...]

  • Page 16

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 16 of 48 SERVICE PROCEDURES AND ADJUSTMENTS WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRES ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSI BLE, DISCONNECT POWER[...]

  • Page 17

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 17 of 48 1. Access the descalers (cathodic protectors) as outlined in REMOVAL AND REPLACEMENT OF PARTS. 2. Inspect the two descalers hanging in boiler. NOTE: As descalers erode over time, the diameter decreases while the length increases. NOTE: A new descaler is app[...]

  • Page 18

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 18 of 48 1) Verify wire color connections are correct at probe numbers 50, 51 & 52, and at the water level control board. 2) Turn power switch off. 3) Remove probe assembly, clean lime scale build-up from the probes and compare probe lengths to drawing. 4) Disco[...]

  • Page 19

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 19 of 48 B. Verify Low Water light is lit (front control panel). C. Verify 120VAC is on Aux LLCO COM, and 0 volt is on Aux LLCO N.O. contacts. 9. When water level reaches Aux LLCO probe as boiler continues to fill: A. Verify Aux LLCO LED is lit on the auxiliary low [...]

  • Page 20

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 20 of 48 HIGH LIMIT PRESSURE SWITCH ADJUSTMENT NOTE: Before the high limit pressure switch can be adjusted, the cycling pr essure switch must be temporarily removed from the boiler control circuit. This allows the boiler to pressurize above the normal operating rang[...]

  • Page 21

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 21 of 48 3. To check boiler fill valve: A. Verify 120VAC to solenoid valve coil. B. If voltage is correct but valve is not opening (little or no water flow), turn power switch off and disconnect power to machine. 1) Remove lead wires from coil and check for continui[...]

  • Page 22

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 22 of 48 HEATING ELEMENT TEST VOLTA GE KW PER ELEMENT A MPS PER ELEMENT OHMS PER ELEMENT 208 9.0 14.4 14.4 240 9.0 12.5 19.2 480 9.0 6.3 76.8 208 10.5 16.9 12.4 208 12.0 19.3 10.8 240 12.0 16.7 14.4 480 12.0 8.3 57.6 NOTES: 1. Values in the table are nominal. Tolera[...]

  • Page 23

    VHX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS F25154 (February 2004) Page 23 of 48 Door Sealing Adjustment 1. Check door gasket condition. If damaged or worn, replace as outlined under COOKING COMPARTMENT DOOR(S) in REMOVAL AND REPLACEMENT OF PARTS. 2. Loosen screws until the screw heads no longer touch gasket plate. 3. Tighten screws unt[...]

  • Page 24

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 24 of 48 ELECTRICAL OPERATION COMPONENT FUNCTION CABINET BASE BOILER CONTROLS Power Sw itch ................ C o n t r o l s 120VAC to the boiler control circuit. Reset Switch (Manual) ......... R e s e t s t h e l o w w a t e r l e v e l s a f e t y c i r c u i t o n i n i t i a[...]

  • Page 25

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 25 of 48 Supply Voltage Transformer .... P r o v i d e s 120VAC to the boiler control and cooking compartment control circuits. Cycling Contactors B & D ...... S upplies line voltage to one side of heating elements thru cycling pressure switch N.C. contacts and LLCO-1 N.O. co[...]

  • Page 26

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 26 of 48 COMPONENT LOCATIONS Boiler Base Controls[...]

  • Page 27

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 27 of 48 Boiler Base Controls Continued[...]

  • Page 28

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 28 of 48 Cooking Compartment Controls[...]

  • Page 29

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 29 of 48 WATER LEVEL CONTROLS Low Level Cut-Off & Differential Control The steamer is equipped with three water level sensing probes (high, low and low level cut-off) and a water level control board. The water level control board performs two functions: 1) Provide low level c[...]

  • Page 30

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 30 of 48 Auxiliary Low Level Cut-Off This control serves as a safety backup to the main water level control (WLC) board to meet CSD-1 code requirements. The operation of the auxiliary control board is identical to the low level cut-off (LLCO) function of the main WLC board but pe[...]

  • Page 31

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 31 of 48 RELAY BOARD Layout, Legend & Diagnostic Test Points The relay board provides a centralized location for wire harness connections and power transfer through board relays (K1-K4) to the other steamer controls. Also, pr ovides for condition or component troubleshooting [...]

  • Page 32

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 32 of 48 Schematic[...]

  • Page 33

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 33 of 48 SEQUENCE OF OPERATION Refer to schematic diagram AI1385 for the electrical sequence of operation. Initial Fill and Preheat 1. Conditions. A. Boiler connected to correct supply voltage and is properly grounded. 1) Supply voltage transformer energized and 120VAC is output [...]

  • Page 34

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 34 of 48 1) K4(1) N.O. contacts close and K4(1) N.C. contacts open. 2) High pressure light goes out. 3) K4(2) N.O. contacts close. a. AUX contactors A & C energized, heating elements powered. NOTE: As boiler heats up and builds pressure, some by-pass water/steam is produced w[...]

  • Page 35

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 35 of 48 1) Compartment steam solenoid valve energized and steam begins to enter the compartment. 2) Ready light (green) goes out and Cooking light (red) comes on. NOTE: Steam should not be seen entering either compartment until a cook time is set. This energizes the steam soleno[...]

  • Page 36

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 36 of 48 SCHEMATICS Boiler Base Controls[...]

  • Page 37

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 37 of 48 Cooking Compartment Controls[...]

  • Page 38

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 38 of 48 WIRING DIAGRAMS Boiler Base Controls[...]

  • Page 39

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 39 of 48[...]

  • Page 40

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 40 of 48 Heating Element Circuits[...]

  • Page 41

    VHX SERIES STEAMER - ELECTRICAL OPERATION F25154 (February 2004) Page 41 of 48 Cooking Compartment Controls[...]

  • Page 42

    VHX SERIES STEAMER - TROUBLESHOOTING F25154 (February 2004) Page 42 of 48 TROUBLESHOOTING BOILER BASE CONTROLS SYMPTOM POSSIBLE CAUSES Steamer does not operate, low water light and high pressure lights not lit. 1. Main circuit breaker off; or control circuit fuse F1 or F2 open. 2. Supply voltage incorrect. 3. Supply voltage transformer - jumper mis[...]

  • Page 43

    VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES F25154 (February 2004) Page 43 of 48 Condenser drain box leaking. 1. Grommets or cover panel gasket not sealing. 2. Clog in drain line plumbing. 3. Drain restricted due to drain pipe size below 1-1/4" NPT. 4. Drain extension plumbing not at the proper slope or plumbing too lengthy. 5[...]

  • Page 44

    VHX SERIES STEAMER - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES F25154 (February 2004) Page 44 of 48 Steamer on, boiler will not heat. Reset switch activated, low water light and high pressure light not lit, ready light lit. 1. Reset switch malfunction. 2. Water Level Control malfunction. 3. Cycling pressure switch out of adjustment or malfunction. 4.[...]

  • Page 45

    VHX SERIES STEAMER - TROUBLESHOOTING F25154 (February 2004) Page 45 of 48 COOKING COMPARTMENT CONTROLS SYMPTOM POSSIBLE CAUSES Cooking compartments do not operate. 1. No power to cooking compartment controls. 2. Pressure in boiler is below compartment pressure switch setting. 3. Manual intake shutoff valve in the off position. 4. Door switch malfun[...]

  • Page 46

    VHX SERIES STEAMER F25154 (February 2004) Page 46 of 48 – NOTES –[...]

  • Page 47

    VHX SERIES STEAMER F25154 (February 2004) Page 47 of 48 – NOTES –[...]

  • Page 48

    VHX SERIES STEAMER - CONDENSED SPARE PARTS LIST F25154 (February 2004) Printed in U.S.A. CONDENSED SPARE PARTS LIST VHX24E, VHX24E5, MHB24E BOILER BASE PART NUMBER DESCRIPTION NOTES 855051-1 Element, 9kw 208V 855051-2 Element, 9kw 240V 855051-3 Element, 9kw 480V 855051-4 Element, 10.5kw 208V 855051-5 Element, 12kw 208V 855051-6 Element, 12kw 240V 8[...]