High Efficiency Electric Steamer Service Manual

VHX SERIES STEAMERS
F25154 (February 2004) Page 2 of 48
TABLE OF CONTENTS
GENERAL ................................................................................ 4
Installation, Operation and Cleaning ........................................................ 4
Introduction ............................................................................ 4
Steam Cooking ..................................................................... 4
Model Designations ................................................................. 4
Compartment Pan Capacity ........................................................... 4
Cooking Compartments Control Panel ...................................................4
Boiler Control Panel ................................................................. 4
Boiler Code Descriptions ............................................................. 5
Water Conditioning ...................................................................... 5
Specifications .......................................................................... 5
Boiler Pressure ..................................................................... 5
Water Supply ...................................................................... 5
Electrical .......................................................................... 6
Tools................................................................................. 6
REMOVAL AND REPLACEMENT OF PARTS .................................................... 7
Pressure Switch Control Box Components ................................................... 7
Main Control Box Components ............................................................. 8
Water Level Gauge Assembly ............................................................. 9
Heating Elements ..................................................................... 10
Heating Element Mounting Plate .......................................................... 11
Boiler Assembly .......................................................................12
Descaler (Cathodic Protector) ............................................................ 13
Cooking Compartment Door(s)............................................................ 14
SERVICE PROCEDURES AND ADJUSTMENTS................................................. 16
Boiler ............................................................................... 16
Inspection ........................................................................ 16
Clean-Out ........................................................................ 16
Deliming .........................................................................16
Descaler (Cathodic Protector) ........................................................ 16
Water Level Probe Housing Blowdown ..................................................... 17
Water Level Controls Test ...............................................................17
Cycling Pressure Switch Adjustment ....................................................... 19
High Limit Pressure Switch Adjustment ..................................................... 20
Boiler Fill and Cold Water Condenser Solenoid Valves ......................................... 20
Cold Water Condenser Thermostat Adjustment ............................................... 21
Heating Element Test................................................................... 22
Cooking Compartment .................................................................. 22
Intake Shut-Off Valve Adjustment (Steam Flow) .......................................... 22
Door Sealing Adjustment ............................................................ 23
Door Latch Adjustment .............................................................. 23