Specifications

42
MOTOR BURNOUT CLEAN-UP PROCEDURE
When a hermetic motor burns out, the stator winding decomposes and
forms carbon, water, and acid, which contaminate refrigerant systems.
These contaminants must be removed from the system to prevent repeat
motor failures. See Carlyle/Carrier recommendation procedures for clean-
up after burnout in semi-hermetic compressors - form #06DA604782.
Before attempting service work on the compressor, see safety
precautions listed in Section 2.3, pages 20 to 31, and on compressor
terminal box cover. Also follow any installation instructions
provided with the replacement compressor. Failure to follow these
instructions could result in equipment damage or serious
personal injury.
1. Determine cause of burnout and make necessary corrections.
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 damaged
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 too 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, they
WARNING
!