SERVICE MANUAL
VL BOILER BASE SERIES CONVECTION STEAMERS
TABLE OF CONTENTS
Wiring Diagrams, Gas Steamers, Boiler Controls
Schematics, Gas Steamers, Boiler Controls
Schematics, Electric Steamers, Boiler Controls
Wiring Diagrams, Electric Heater Circuits
INTRODUCTION
GENERAL
WATER CONDITIONING
TOOLS
SPECIFICATIONS
Standard
Special
Gas Steamers
VL SERIES STEAMERS - GENERAL
Electric Steamers
Page 6 of
Gas Powered Steam Boiler
STEAMER OPERATION
Electrically Powered Steam Boiler
Regenerated Steam Powered Boiler
Boiler Blowdown and Steamer Shut off
Direct Steam Powered Cooker
3.Automatic blowdown
4.Manual blowdown
3. Automatic
2. Standard
4.Prevent
CABINET BASE BOILER CONTROLS
COMPONENT FUNCTION
Handhole Cover Assembly
COOKING COMPARTMENT CONTROLS
COMPONENT LOCATIONS
REMOVAL AND REPLACEMENT OF PARTS
Page 15 of
Prevent
CYCLING AND HIGH LIMIT PRESSURE SWITCHES
WATER LEVEL GAUGE ASSEMBLY
GAS AND ELECTRIC MODELS
Solid State
HIGH LIMIT THERMOSTAT
BOILER ASSEMBLY
GAS COMBINATION CONTROL VALVE
PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS
Door Screw Nut
Gasket
Door and Bushing
STEAM COIL
HEATER CONTACTORS
HEATING ELEMENTS
REGENERATED STEAM MODELS
BOILER
SERVICE PROCEDURES AND ADJUSTMENTS
Descaler
Deliming Only Models with Deliming Port Assembly
WATER LEVEL CONTROLS TEST
GAS AND ELECTRIC MODELS
CYCLING AND HIGH LIMIT PRESSURE SWITCHES
Water Level Probes
FILL AND COLD WATER SOLENOID VALVES
COMPARTMENT PRESSURE ADJUSTMENT
Disassembly
BOILER BLOWDOWN DRAIN SOLENOID VALVE
BOILER NOT FILLING WITH WATER
HIGH LIMIT THERMOSTAT
A. Newer Models
BOILER SLOW TO PRESSURIZE
B.Older Models
1.All Models With Boiler
PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS
INLET WATER STRAINER
3.Electric Models
4.Direct Steam Models
Check the thermocouple output voltage as follows
“PILOT AND THERMOCOUPLE ASSEMBLY GAS MODELS” in
Page 30 of
AUTOMATIC IGNITION SYSTEMS GAS MODELS
GAS BURNERS
Air Shutter Adjustment
Inspection
Spark Ignition Control Test
Terminals
GAS MANIFOLD PRESSURE ADJUSTMENT
REGENERATED STEAM OLDER MODELS
DIRECT STEAM MODELS
HEATER CONTACTORS
HEATING ELEMENTS
NUMBER
WATER LEVEL GAUGE ASSEMBLY
THERMAL SWITCH - PREVENT AND AUTOMATIC MODELS
1.Newer Models
2.Older Models
STEAM GATE VALVES
WATER LEVEL CONTROLS
ELECTRICAL OPERATION
Solid State - Auxiliary Low Level Cut-Off
VL SERIES STEAMER - ELECTRICAL OPERATION
Electro Mechanical - Auxiliary Low Level Cut-Off
GAS MODELS
SEQUENCE OF OPERATION
A.Power to terminal 6 on water level control
A.Power to terminal 9 on the water level control
VL SERIES STEAMER - ELECTRICAL OPERATION
4.Water reaches LL low level probe
Water Refill After Initial Fill
Cook Cycle
Boiler Blowdown/drain
ELECTRIC MODELS
INITIAL FILL AND PREHEAT
COOK CYCLE
BOILER BLOWDOWN/DRAIN
WATER REFILL AFTER INITIAL FILL
VL SERIES STEAMER - ELECTRICAL OPERATION
PAGE PURPOSELY LEFT BLANK
Page 48 of
Manual Ignition, Standard Controls
SCHEMATICS, GAS STEAMERS, BOILER CONTROLS
Electronic Ignition, Standard Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 50 of
Manual Ignition, CSD-1Code Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 51 of
Electronic Ignition, CSD-1Code Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 52 of
Page 53 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 54 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 55 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, Standard Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 56 of
Page 57 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Manual Ignition, CSD-1Code Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 58 of
Page 59 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Electronic Ignition, CSD-1Code Controls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 60 of
Page 61 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Auto Blowdown, Standard Controls
SCHEMATICS, ELECTRIC STEAMERS, BOILER CONTROLS
Auto Blowdown, Cal-CodeControls
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 63 of
Page 64 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 65 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 66 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 67 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 68 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 69 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 70 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 71 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 72 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 73 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 74 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 75 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Standard and Cal-Code/CSD-1Controls
WIRING DIAGRAMS, ELECTRIC HEATER CIRCUITS
Page 77 of
VL SERIES STEAMER - ELECTRICAL OPERATION
Manual Blowdown Older Models
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 78 of
Auto Blowdown Older Models
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 79 of
Prevent
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 80 of
Automatic
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 81 of
Standard
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 82 of
Manual
VL SERIES STEAMER - ELECTRICAL OPERATION
Page 83 of
SYMPTOM
TROUBLESHOOTING
ALL MODELS
POSSIBLE CAUSES
VL SERIES STEAMER - TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSES
VL SERIES STEAMER - TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSES
SYMPTOM
GAS MODELS ONLY
POSSIBLE CAUSES
VL SERIES STEAMER - TROUBLESHOOTING