VL BOILER BASE SERIES CONVECTION STEAMERS
SERVICE MANUAL
TABLE OF CONTENTS
Schematics, Gas Steamers, Boiler Controls
Wiring Diagrams, Gas Steamers, Boiler Controls
Schematics, Electric Steamers, Boiler Controls
Wiring Diagrams, Electric Heater Circuits
GENERAL
INTRODUCTION
WATER CONDITIONING
SPECIFICATIONS
TOOLS
Standard
Special
VL SERIES STEAMERS - GENERAL
Gas Steamers
Electric Steamers
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STEAMER OPERATION
Gas Powered Steam Boiler
Electrically Powered Steam Boiler
Regenerated Steam Powered Boiler
Direct Steam Powered Cooker
Boiler Blowdown and Steamer Shut off
3.Automatic blowdown
4.Manual blowdown
2. Standard
3. Automatic
4.Prevent
COMPONENT FUNCTION
CABINET BASE BOILER CONTROLS
Handhole Cover Assembly
COOKING COMPARTMENT CONTROLS
REMOVAL AND REPLACEMENT OF PARTS
COMPONENT LOCATIONS
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Prevent
WATER LEVEL GAUGE ASSEMBLY
CYCLING AND HIGH LIMIT PRESSURE SWITCHES
GAS AND ELECTRIC MODELS
Solid State
BOILER ASSEMBLY
HIGH LIMIT THERMOSTAT
PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS
GAS COMBINATION CONTROL VALVE
Gasket
Door Screw Nut
Door and Bushing
HEATER CONTACTORS
STEAM COIL
HEATING ELEMENTS
REGENERATED STEAM MODELS
SERVICE PROCEDURES AND ADJUSTMENTS
BOILER
Deliming Only Models with Deliming Port Assembly
Descaler
WATER LEVEL CONTROLS TEST
CYCLING AND HIGH LIMIT PRESSURE SWITCHES
GAS AND ELECTRIC MODELS
Water Level Probes
COMPARTMENT PRESSURE ADJUSTMENT
FILL AND COLD WATER SOLENOID VALVES
Disassembly
BOILER NOT FILLING WITH WATER
BOILER BLOWDOWN DRAIN SOLENOID VALVE
HIGH LIMIT THERMOSTAT
BOILER SLOW TO PRESSURIZE
A. Newer Models
B.Older Models
1.All Models With Boiler
INLET WATER STRAINER
PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS
3.Electric Models
4.Direct Steam Models
“PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS” in
Check the thermocouple output voltage as follows
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GAS BURNERS
AUTOMATIC IGNITION SYSTEMS GAS MODELS
Air Shutter Adjustment
Inspection
Terminals
Spark Ignition Control Test
GAS MANIFOLD PRESSURE ADJUSTMENT
DIRECT STEAM MODELS
REGENERATED STEAM OLDER MODELS
HEATER CONTACTORS
HEATING ELEMENTS
NUMBER
THERMAL SWITCH - PREVENT AND AUTOMATIC MODELS
WATER LEVEL GAUGE ASSEMBLY
1.Newer Models
2.Older Models
STEAM GATE VALVES
ELECTRICAL OPERATION
WATER LEVEL CONTROLS
Solid State - Auxiliary Low Level Cut-Off
VL SERIES STEAMER - ELECTRICAL OPERATION
Electro Mechanical - Auxiliary Low Level Cut-Off
SEQUENCE OF OPERATION
GAS MODELS
A.Power to terminal 9 on the water level control
A.Power to terminal 6 on water level control
VL SERIES STEAMER - ELECTRICAL OPERATION
4.Water reaches LL low level probe
Cook Cycle
Water Refill After Initial Fill
ELECTRIC MODELS
Boiler Blowdown/drain
INITIAL FILL AND PREHEAT
COOK CYCLE
WATER REFILL AFTER INITIAL FILL
BOILER BLOWDOWN/DRAIN
PAGE PURPOSELY LEFT BLANK
VL SERIES STEAMER - ELECTRICAL OPERATION
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SCHEMATICS, GAS STEAMERS, BOILER CONTROLS
Manual Ignition, Standard Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, Standard Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
Manual Ignition, CSD-1Code Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, CSD-1Code Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, Standard Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
Manual Ignition, CSD-1Code Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, CSD-1Code Controls
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VL SERIES STEAMER - ELECTRICAL OPERATION
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SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLS
Auto Blowdown, Standard Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Auto Blowdown, Cal-CodeControls
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
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WIRING DIAGRAMS, ELECTRIC HEATER CIRCUITS
Standard and Cal-Code/CSD-1Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
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VL SERIES STEAMER - ELECTRICAL OPERATION
Manual Blowdown Older Models
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VL SERIES STEAMER - ELECTRICAL OPERATION
Auto Blowdown Older Models
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VL SERIES STEAMER - ELECTRICAL OPERATION
Prevent
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VL SERIES STEAMER - ELECTRICAL OPERATION
Automatic
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VL SERIES STEAMER - ELECTRICAL OPERATION
Standard
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VL SERIES STEAMER - ELECTRICAL OPERATION
Manual
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TROUBLESHOOTING
SYMPTOM
ALL MODELS
POSSIBLE CAUSES
SYMPTOM
VL SERIES STEAMER - TROUBLESHOOTING
POSSIBLE CAUSES
SYMPTOM
VL SERIES STEAMER - TROUBLESHOOTING
POSSIBLE CAUSES
GAS MODELS ONLY
SYMPTOM
POSSIBLE CAUSES
VL SERIES STEAMER - TROUBLESHOOTING
