desmon GBC-15, Service Manual

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Blast chiller Service Manual
49
Rev 07/04/2015
5 VACUUM AND CHARGE PROCEDURE
WARNING: Before performing any service that involves electrical connection or
disconnection and/or exposure to electrical components, always follow the
Electrical LOCKOUT/TAGOUT Procedure. Disconnect all circuits. Failure to comply
can cause property damage, injury or death.This chapter deals with
Repairing/replacing instruction, of both mechanical and electrical Components.
Always perform a vacuum and charging procedure when any of the following
actions have been done:
Replacement of compressor
Replacement of solenoid valve body
Replacement of condenser
Replacement of evaporator
Replacement of thermal expansion valve
Replacement of liquid receiver or oil separator
Replacement of a filter
Leak repair
Replacement of tubing
Any action that involves opening the refrigeration system
NOTE: Always replace the filter/drier before beginning a vacuum and charging
procedure.
NOTE: Refer to Data Chart for correct amount of refrigerant for each model.
NOTE: Ensure all refrigerant is recovered before pulling a vacuum on the system.
For the best results, pull the vacuum form more than one point in the system.
5.1 VACUUM AND CHARGING INSTRUCTION
5.1.1 Self Contained Models
Attach vacuum pump to the compressor check pressure valve and liquid receiver
valve (shown).
COMPRESSOR
VALVE
LIQUID RECEIVER
VALVE