42
1. Determine cause of burnout and make necessary correc-
tions.
a. Inspect control box for blown fuses, welded starter
contacts, welded overload contacts or burned out
heater elements.
b. Inspect compressor terminal plate for burned or dam-
aged terminals and insulation, and shorted or
grounded terminals.
c. Inspect unit wiring for loose power connections.
d. Check for power supply fluctuation beyond design
limits (voltage too high or low). If power supply is
a
problem, provide the appropriate system protector.
2. Close compressor suction and discharge service valves
and remove the refrigerant from the compressor using
environmentally approved methods. Leave remaining
refrigerant in system.
3. Remove damaged compressor and replace.
a. Remove suction and discharge shut-off valve bolts
and all other connections to damaged compressor.
b. Remove damaged compressor and replace with a
new compressor.
c. On severe motor burnouts, be sure shut-off valves
and suction or discharge lines are not contaminated.
If contaminated, thoroughly clean or replace before
connecting replacement compressor.
4. Install new liquid line filter-drier. If the system has a
suction line filter-drier, replace the core.
WARNING
Before attempting service work on the compressor, see
safety precautions listed in Section 2.3 and on compressor
terminal box cover. Also follow any installation instructions
provided with the replacement compressor. Failure to fol-
low these instructions could result in equipment dam-
age or serious personal injury.
To Next Page
Loading...
Need help?
General
