Instruction/ maintenance manual of the product C24GA6, C24GA10, ML-136021, ML-136022 Vulcan-Hart
Go to page of 39
SER VICE MANUAL F35425 (February 2006) - NOTICE - This manual is prepared for the use of trained V ulcan Service T echnicians and should not be used by those not properly qualified. If you have attended a V ulcan Service School for this product, you may be qualified to perform all the procedures described in this manual.
F35425 (February 2006) Page 2 of 40 T ABLE OF CONTENTS GE NE R AL ................................................................................................................................................................ 4 Introduction .........
F35425 (February 2006) Page 3 of 40 C24GA SERIES CONVECTION STEAMERS ELECTRICAL OPERA TION .................................................................................................................................... 2 2 Water Level Controls ..
F35425 (February 2006) Page 4 of 40 C24GA SERIES CONVECTION STEAMERS - GENERAL GENERAL INTRODUCTION Procedures in this manual will apply to all models unless specified. Pictures and illustrations can be of any model unless the picture or illustration needs to be model specific.
F35425 (February 2006) Page 5 of 40 REMOV AL AND REPLACEMENT OF P ARTS C24GA SERIES CONVECTION STEAMERS - REMOV AL AND REPLACEMENT OF P ARTS COVERS AND P ANELS W ARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / T AGOUT PROCEDURES.
F35425 (February 2006) Page 6 of 40 Cabinet Base Left Side Panel 1. Remove the screws then remove the left side panel from the cabinet base. Cabinet Base Front Panel 1. Remove the screws then remove the front panel from the cabinet base. C24GA SERIES CONVECTION STEAMERS - REMOV AL AND REPLACEMENT OF P ARTS Cabinet Base Rear Panel 1.
F35425 (February 2006) Page 7 of 40 Door Gasket 1. Open the door . 2. Remove screws from the gasket guard and gasket plate. 3. Remove the gasket guard and the gasket plate. 4. Position the new gasket on the gasket plate. 5. Reverse the procedure to install.
F35425 (February 2006) Page 8 of 40 Door Latch Assembly 1. Open the door . 2. Remove screws from the top and bottom of the door . 3. Pull the outer door panel out from the door housing. 4. Remove the pins and retaining rings. 5. Remove the latch assembly from the door .
F35425 (February 2006) Page 9 of 40 MAIN BURNER W ARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / T AGOUT PROCEDURES. 1. Remove front and side covers as outlined under COVERS AND P ANELS. 2. Disconnect the gas line at gas combination control valve.
F35425 (February 2006) Page 10 of 40 1. Drain the generator and allow steamer to cool, if necessary . 2. Remove rear and side panels as outlined under COVERS AND P ANELS. 3. Disconnect gas line at gas combination control valve. 4. Disconnect wires to burner assembly .
F35425 (February 2006) Page 11 of 40 16 . Rotate pressure relief valve coupling to allow pressure relief valve to be rotated about 90° so that valve is below generator top level. 17. Remove pressure switch from generator . 18 . Remove bolts attaching front of generator to frame.
F35425 (February 2006) Page 12 of 40 4. Disconnect the water lines for the solenoid valve being serviced and remove the solenoid valve from the unit. 5. Reverse procedure to install solenoid valve. PILOT/SP ARK PROBE FLAME SENSOR 1 . Remove main burner assembly as outlined under MAIN BURNER in REMOV AL AND REPLACEMENT OF P ARTS.
F35425 (February 2006) Page 13 of 40 C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS SER VICE PROCEDURES AND ADJUSTMENTS W ARNING: CER T AIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASURE- MENTS WHILE POWER IS APPLIED TO THE MACHINE.
F35425 (February 2006) Page 14 of 40 The screw head should not extend out past the screw housing. 1 ) If gas valve energizes, proceed to step 5. 2 ) If gas valve does not energize, check the following: a. Remove the lead wires from the switch and verify with a meter that the switch contacts are closing with the blower on.
F35425 (February 2006) Page 15 of 40 C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS 16 . Turn off the machine. 1 7. Re-install pilot, reconnect wire # 35. 1 8. Turn on the machine, let generator fill 19. Observe proper functioning of gas burner .
F35425 (February 2006) Page 16 of 40 Thumb Wheel Adjustment The thumb wheel directly below the microswitch changes both the cut-out (off) and the cut-in (on) points of the operating Pressure Switch. Turn the thumb wheel to obtain the proper cut-out (off) setting.
F35425 (February 2006) Page 17 of 40 C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS AUTOM A TIC IGNITION SYSTEMS When the main power switch is turned on and the water level is above LLCO, the ignition control module is energized with 24 volts between terminals five and six.
F35425 (February 2006) Page 18 of 40 C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS A . If 24V AC is present, then replace ignition control module and retest. It may take up to 3 seconds for the module to reset if main power is turned off then back on.
F35425 (February 2006) Page 19 of 40 5. V erify burner air pressure is 0.35" to 0.4" W .C. 6. Turn the gas combination control valve on and wait until main burner lights. 7. Observe the manometer pressure reading and compare to the pressure chart below .
F35425 (February 2006) Page 20 of 40 C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS Striker Adjustment 1. Reinstall the striker with the slot pointing upwards and hand tighten nut only . 2. Close the door to center the striker in the oval mounting hole.
F35425 (February 2006) Page 21 of 40 10 . After 40 minutes, turn power switch off and allow steam generator to completely drain, 5 minutes. 1 1. Rinse steam generator with clean water: A . Turn power switch on. When ready light comes on, turn cooking timers on for 30 seconds to rinse the steam tubes and nozzles.
F35425 (February 2006) Page 22 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION ELECTRICAL OPERA TION W A TER LEVEL CONTROLS Low Level Cut-Off and Differential Control The steamer is equipped with three water level sensing probes (high, low and low level cut-off) and a single water level control board.
F35425 (February 2006) Page 23 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION 1. Turn power switch on. A . Timer de-energized. 1 ) Operating voltage applied to control compartment after cavity relay is latched on. B . Water level control (WLC) energized.
F35425 (February 2006) Page 24 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION Compartment control (Units after Dec. 1, 2005) Refer to schematic diagrams 00855693 & 00856656. 1. Compartment door closed causing door switch to close and Ready Light to illuminate.
F35425 (February 2006) Page 25 of 40 SCHEMA TIC DIAGRAMS C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION Generator Schematic Diagram.
F35425 (February 2006) Page 26 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION Schematic Diagram - Compartment Controls (Standard).
F35425 (February 2006) Page 27 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION Schematic Diagram - Compartment Controls (Constant Steam).
F35425 (February 2006) Page 28 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION COMPONENT LOCA TION CABINET BASE GENERA TOR.
F35425 (February 2006) Page 29 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION COMPONENT FUNCTION CABINET BASE GENERA TOR Water Level Control and Level Sensing Probes.
F35425 (February 2006) Page 30 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION Hold Thermostat........................... The Hold Thermost at energizes the Generator Slow Fill Solenoid V alve when generator temperature reaches the non-adjustable setpoint at 190°F .
F35425 (February 2006) Page 31 of 40 COMPONENT LOCA TION COOKING COMP ARTMENT C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION.
F35425 (February 2006) Page 32 of 40 C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERA TION COMPONENT FUNCTION COOKING COMP ARTMENT General The upper section of the steamer consists of two separate cooking compartments. Each compartment functions independently with its own set of controls.
F35425 (February 2006) Page 33 of 40 C24GA SERIES CONVECTION STEAMERS - TROUBLESHOOTING General The following paragraphs provide descriptive information of the most common troubles that can occur in the steamer . The T roubleshooting Chart provides a list of other typical fault conditions.
F35425 (February 2006) Page 34 of 40 C24GA SERIES CONVECTION STEAMERS - TROUBLESHOOTING TROUBLESHOOTING SEQUENCE OF OPERA TION STEP FUNCTION DESCRIPTION 1 Power On Power Switch is switched to the on position. 2 Fill S tage 1 Boiler fills with fast fill water valve, (3.
F35425 (February 2006) Page 35 of 40 TROUBLESHOOTING CHART SYMPTOM POSSIBLE CAUSES Compartment leaks steam or water 1. S teamer not level. around door . 2. Worn or damaged gasket. 3. Cavity rear strainer clogged. 4. Drain line obstructed. 5. Drain not to an open gap drain.
F35425 (February 2006) Page 36 of 40 SYMPTOM POSSIBLE CAUSES Generator does not fill. 1. Water supply not on. 2. Fill solenoid not opening or plugged. 3. Water level control malfunction. 4. Filter clogged. Timer motor does not run. 1. Door open. 2. Door switch inoperative.
F35425 (February 2006) Page 37 of 40 C24GA SERIES CONVECTION STEAMERS - TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES S p ark igniter not sparking. 1. Incorrect spark gap setting. 2. Poor ground between pilot bracket and burner . 3. Loose, broken or damaged lead wires (including ground) from ignition module to ignitor .
F35425 (February 2006) Page 38 of 40 C24GA SERIES CONVECTION STEAMERS - CONDENSED SP ARE P A RTS LIST CONDENSED SP ARE P ARTS LIST C24GA SERIES CONVECTION STEAMERS P ART NO.
F35425 (February 2006) Page 39 of 40.
An important point after buying a device Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 you will learn all the available features of the product, as well as information on its operation. The information that you get Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 will certainly help you make a decision on the purchase.
If you already are a holder of Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022.
However, one of the most important roles played by the user manual is to help in solving problems with Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
