Page 2 - TABLE OF CONTENTS
VSX SERIES STEAMERS Page 2 of 80 TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4 - GENERAL; INTRODUCTION
VSX SERIES STEAMERS - GENERAL Page 4 of 80 VSX42RT SHOW N GENERAL INTRODUCTION General This manual is applicable for all models listed on thecov er page. A conv ection steamer on a 42 inchbase with a tilting kettle is pictured below forreference. Steam Cooking Pressure-less steamers offer an efficie...
Page 5 - SPECIFICATIONS; Gas Steamers
VSX SERIES STEAMERS - GENERAL Page 5 of 80 SPECIFICATIONS Gas Steamers INPUT (BTU/HR) MANIFOLD PRESSURE (INCHES W.C.) LINE PRESSURE (INCHES W.C.) LOAD (WATTS) AMPS (MAX) NATURAL PROPANE MAX MODEL NAT. PROP. NAT. PROP. RECOMMEND MIN RECOMMEND MIN 120V 60HZ VSX24G 200,000 200,000 4.0 10.0 7.0 5.0 11.0...
Page 6 - Water Supply; TOOLS; Standard; WATER CONDITIONING
VSX SERIES STEAMERS - OPERATION Page 6 of 80 Water Supply Supply pressure should be 20-80 psig In line strainer for supply line (Not Supplied) Supply connection cold Total dissolv ed solids (TDS)* less than 60 ppm Total alkalinity less than 20 ppm Silica less than 13 ppm Chloride less than 30 ppm PH...
Page 7 - STEAMER OPERATION; CABINET BASE BOILERS; Gas Powered Steam Boiler
VSX SERIES STEAMERS - OPERATION Page 7 of 80 STEAMER OPERATION WARNING: THE STEAMER AND ITS PARTS ARE HOT. USE CARE W HEN OPERATING, CLEANING ORSERVICING THE STEAMER. THE COOKING COMPARTMENT CONTAINS LIVE STEAM. STAY CLEARW HEN OPENING EACH DOOR. CABINET BASE BOILERS Ensure that all utility connecti...
Page 8 - Electrically Powered Steam Boiler; Regenerated Steam Powered Boiler; BOILER BLOWDOWN AND
VSX SERIES STEAMERS - OPERATION Page 8 of 80 Electrically Powered Steam Boiler Open the cabinet door and turn main power switchON. The red light will illuminate, water will beginfilling the boiler and the blowdown solenoid v alv ewill close. The boiler should fill, in 4 to11 minutes.Observ e water l...
Page 9 - COOKING COMPARTMENT
VSX SERIES STEAMERS - OPERATION Page 9 of 80 COOKING COMPARTMENT CONTROLS W hen the steam pressure in the cookingcompartment manifold reaches approximately 3 psi,the cooking compartment pressure switch closes,suppling power to the other controls. The readylights will illuminate and after approximate...
Page 10 - COMPONENT FUNCTION AND LOCATION; CABINET BASE BOILER
VSX SERIES STEAMERS - COMPONENT FUNCTION AND LOCATION Page 10 of 80 COMPONENT FUNCTION AND LOCATION CABINET BASE BOILER CONTROLS WARNING: THE STEAMER AND ITS PARTS AREHOT. USE CARE W HEN OPERATING, CLEANINGOR SERVICING THE STEAMER. THE COOKINGCOMPARTMENTS CONTAIN LIVE STEAM. STAYCLEAR W HEN OPENING ...
Page 15 - SERVICE PROCEDURES; CABINET BASES; BOILER; Inspection
VSX SERIES STEAMER - SERVICE PROCEDURES Page 15 of 80 SERVICE PROCEDURES WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRES ELECTRICAL TEST ORMEASUREMENTS W HILE POW ER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALLTIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POW ER, ATT...
Page 17 - Electro Mechanical
VSX SERIES STEAMER - SERVICE PROCEDURES Page 17 of 80 C. Does the HL LED go out and the HL relayde-energize, allowing the contact state toswitch back to its starting condition afterthe water lev el reaches the HL probe? 4. If water is in the boiler but is not being detectedby the water lev el probes...
Page 18 - High Limit Thermostat; Disassembly
VSX SERIES STEAMER - SERVICE PROCEDURES Page 18 of 80 High Limit Thermostat WARNING: DISCONNECT THE ELECTRICALPOW ER TO THE MACHINE AT THE MAINCIRCUIT BOX. PLACE A TAG ON THE CIRCUITBOX INDICATING THE CIRCUIT IS BEINGSERVICED. Remov e thermostat (bi-metallic disk type) andinspect flat surface of the...
Page 19 - Water Not Being Supplied to Boiler
VSX SERIES STEAMER - SERVICE PROCEDURES Page 19 of 80 4. Remov e the stem locking nut to remov e thestem from the v alv e body. 5. All parts are now accessible for inspection andcleaning. NOTE: If internal solenoid parts appear to bedamaged or worn, then replace the solenoid v alv e.Do not reuse dam...
Page 20 - Steamer Achieves Pressure Slower Than Normal; Gas Models
VSX SERIES STEAMER - SERVICE PROCEDURES Page 20 of 80 Steamer Achieves Pressure Slower Than Normal If the boiler requires more than 15 minutes (20minutes for regenerated models) to achiev e normaloperating pressure as listed in below, then check thefollowing conditions. NORMAL OPERATING STEAM PRESSU...
Page 21 - Inlet Water Strainer; GAS MODELS; Pilot, Thermocouple or Main Burners
VSX SERIES STEAMER - SERVICE PROCEDURES Page 21 of 80 Inlet Water Strainer The in-line Y strainer should be located upstream ofthe fill v alv e solenoid. Unscrew the cap from thebody on the leg of the Y that should be pointingdownwards toward the floor. Remov e the screenand any foreign particles tr...
Page 22 - Automatic Ignition Systems
VSX SERIES STEAMER - SERVICE PROCEDURES Page 22 of 80 Check the thermocouple output v oltage (DCmilliv olts) with a VOM. If a meter is not av ailable,replace the thermocouple with a new one andrecheck operation. First, take a closed circuitreading (adaptor required) with the pilot on. Next,take an o...
Page 23 - Spark Ignition Control Test; Gas Combination Control Valve Replacement
VSX SERIES STEAMER - SERVICE PROCEDURES Page 23 of 80 Spark Ignition Control Test 1. If the ignition control module does not appearto be sparking to ignite gas, perform thefollowing checks. A. Check to ensure that all electrical terminalconnections on the ignition control moduleand the ignitor are c...
Page 24 - ELECTRIC MODELS; Magnetic Contactor
VSX SERIES STEAMER - SERVICE PROCEDURES Page 24 of 80 A. If other appliances are connected to thesame gas line, turn them all ON and checkmanometer pressure reading again. If apressure drop of ½ inch water column ormore is observ ed, then the gas supplyneeds to be checked by the gas lineinstaller or...
Page 26 - DIRECT STEAM MODELS; Controls
VSX SERIES STEAMER - SERVICE PROCEDURES Page 26 of 80 DIRECT STEAM MODELS These models consist of a pressure regulator andgauge that run off a buildings potable steam supply.The maximum input pressure to the regulator shouldbe 15 psi. Incoming power (120VAC) for thecompartment controls is supplied f...
Page 27 - DOOR; Removal
VSX SERIES STEAMER - SERVICE PROCEDURES Page 27 of 80 Water Accumulating in Compartment - W ateraccumulation on the bottom of the cookingcompartment(s) is primarily condensed steam.Failure to drain out quickly and completely, may bedue to clogged debris in the compartment drainscreen. Pull screen st...
Page 28 - Sealing Adjustment; Handle; Latch Assembly
VSX SERIES STEAMER - SERVICE PROCEDURES Page 28 of 80 Sealing Adjustment 1. Check the door gasket quality. If damaged orworn, replace as outlined in “REMOVAL” under“DOOR”. 2. Loosen screws until the screw heads no longertouch the gasket plate. 3. Tighten screws until screw head touches gasketplate a...
Page 29 - Latch Adjustment
VSX SERIES STEAMER - SERVICE PROCEDURES Page 29 of 80 Latch Adjustment Should the cooker door jam and can not be opened,DO NOT FORCE OR PRY the door as damage willoccur. First, try lifting up on the bottom of the door at thehandle end to disengage the latch. If that does notwork, remov e the right s...
Page 30 - ELECTRICAL OPERATION; WATER LEVEL CONTROLS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 30 of 80 ELECTRICAL OPERATION WATER LEVEL CONTROLS Solid State - Low level Cut-Off & Differential Control The steamer is equipped with three water lev elsensing probes (high, low and low lev el cut-off) anda single water lev el control board. The wa...
Page 31 - Solid State - Auxiliary Low Level Cut-Off
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 31 of 80 Solid State - Auxiliary Low Level Cut-Off This control serv es as a safety backup to the mainwater lev el control (W LC) board to meet Cal-Codeand CSD-1 code requirements. The operation of theauxiliary control is identical to the low lev el cut...
Page 32 - Electro Mechanical - Low level Cut-Off & Differential Control
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 32 of 80 Electro Mechanical - Low level Cut-Off & Differential Control The steamer is equipped with three water lev el sensing probes (high, low and low lev el cut-off), a differentiallev el control (1G1GO) and a low lev el cut-off control (1D1DO). ...
Page 33 - Electro Mechanical - Auxiliary Low Level Cut-Off
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 33 of 80 Electro Mechanical - Auxiliary Low Level Cut-Off This control serv es as a safety backup to the main low lev el cut-off (LLCO) control to meet Cal-Coderequirements. The operation of the auxiliary control is identical to the main low lev el cut-...
Page 34 - SEQUENCE OF OPERATION; INITIAL FILL AND PREHEAT
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 34 of 80 SEQUENCE OF OPERATION GAS MODELS This sequence of operation is written for steamerswith automatic ignition, solid state water lev elcontrols and the CSD-1 (code) option. Refer toschematic diagram number 3707. INITIAL FILL AND PREHEAT 1. Conditi...
Page 36 - COOK CYCLE
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 36 of 80 A. Boiler steam pressure is maintained by thecycling of the pressure switch between theupper and lower set point limits. Thecycling pressure switch continues toenergize and de-energize the main gassolenoid v alv e starting and stopping theflow ...
Page 37 - BOILER BLOWDOWN/DRAIN
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 37 of 80 A. The inv erse latching relay of the waterlev el control is energized, changing thestate of ILR-1 (N.O.) and ILR-2 (N.C.)contacts. B. HL relay is de-energized. 1) HL-3 opens. 2) Fill solenoid de-energized and waterstops flowing into tank. 3) H...
Page 40 - PAGE PURPOSELY LEFT BLANK
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 40 of 80 PAGE PURPOSELY LEFT BLANK
Page 41 - SCHEMATICS, GAS STEAMERS, BOILER CONTROLS; Manual Ignition, Standard Controls
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 41 of 80 SCHEMATICS, GAS STEAMERS, BOILER CONTROLS VSX24G, 36G AND 42GT Manual Ignition, Standard Controls
Page 42 - Electronic Ignition, Standard Controls
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 42 of 80 Electronic Ignition, Standard Controls
Page 46 - WIRING DIAGRAMS, GAS STEAMERS, BOILER CONTROLS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 46 of 80 WIRING DIAGRAMS, GAS STEAMERS, BOILER CONTROLS VSX24G, 36G AND 42GT Manual Ignition, Standard Controls
Page 54 - SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLS; Auto Blowdown, Standard Controls
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 54 of 80 SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLS VSX24E, 36E AND 42ET Auto Blowdown, Standard Controls
Page 58 - WIRING DIAGRAMS, ELECTRIC STEAMERS, BOILER CONTROLS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 58 of 80 WIRING DIAGRAMS, ELECTRIC STEAMERS, BOILER CONTROLS VSX24E, 36E AND 42ET Auto Blowdown, Standard Controls
Page 64 - Auto Blowdown, Step Down Transformer, Standard Controls
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 64 of 80 Auto Blowdown, Step Down Transformer, Standard Controls
Page 70 - WIRING DIAGRAMS, ELECTRIC HEATER CIRCUITS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 70 of 80 WIRING DIAGRAMS, ELECTRIC HEATER CIRCUITS VSX24E, 36E AND 42ET Standard and Cal-Code/CSD-1 Controls (Newer Models)
Page 73 - WIRING DIAGRAM, DIRECT STEAMERS, CABINET BASE
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 73 of 80 SCHEMATIC, DIRECT STEAMERS, CABINET BASE VSX24D, 36D AND 42DT See “SCHEMATIC ALL MODELS - COMPARTMENT CONTROLS” WIRING DIAGRAM, DIRECT STEAMERS, CABINET BASE VSX24D, 36D AND 42DT See “W IRING DIAGRAM ALL MODELS - COMPARTMENT CONTROLS”
Page 74 - WIRING DIAGRAMS, REGENERATED STEAMERS, BOILER CONTROLS; Manual Blowdown
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 74 of 80 WIRING DIAGRAMS, REGENERATED STEAMERS, BOILER CONTROLS VSX36R AND 42RT (OLDER MODELS) Manual Blowdown
Page 75 - Auto Blowdown
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 75 of 80 Auto Blowdown
Page 76 - SCHEMATIC ALL MODELS - COMPARTMENT CONTROLS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 76 of 80 SCHEMATIC ALL MODELS - COMPARTMENT CONTROLS
Page 77 - WIRING DIAGRAM, ALL MODELS - COMPARTMENT CONTROLS
VSX SERIES STEAMER - ELECTRICAL OPERATION Page 77 of 80 WIRING DIAGRAM, ALL MODELS - COMPARTMENT CONTROLS
Page 78 - TROUBLESHOOTING; ALL MODELS; SYMPTOM
VSX SERIES STEAMER - TROUBLESHOOTING Page 78 of 80 TROUBLESHOOTING ALL MODELS WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS ORMEASUREMENTS W HILE POW ER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALLTIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POW ER...
Page 80 - GAS MODELS ONLY
VSX SERIES STEAMER - TROUBLESHOOTING Form 24627 (December 98) Printed in U.S.A. GAS MODELS ONLY SYMPTOM POSSIBLE CAUSES Burner won’t light. 1. Gas not on. 2. Ignition control module reset switch in the OFF position ormalfunctioning. 3. Ignition module not receiving power. Check ignition moduletransf...
