Operation and maintenance manual

Section 260-0130
Operators Compartment - Air Conditioning
SM 1405 Rev 2 11-04
14
* * * *
AIR CONDITIONING DIAGNOSIS (CONT.)
CONDITION PROBLEM REMEDY
6. Air Conditiong System
Trouble - Gauges must be
connected
High head pressure Overcharge of refrigerant Purge system as necessary
Air in system Evacuate and re-charge
Condenser clogged Clean condenser
Low head pressure Undercharge of refrigerant Complete charge
Bad compressor valve plate or Repair or replace
gasket
Restriction in drier Replace drier
Low suction pressure Restriction in lines Clean lines
Restriction in expansion valve Replace expansion valve and drier
Improper expansion valve in charge Replace expansion valve
Refrigerant leak Inspect lines and fittings. Tighten,
repair or replace