TM 9-4120-385-14
d. ASSEMBLY.
1.
Carefullly press bearings (7) onto rotor and shaft assembly (8) using an arbor
press.
2.
Insert rotor and shaft assembly (8) into frame and stator assembly (22). Assure
that the long end of the shaft is inserted.
Install front bracket (3) over motor shaft and align with holes in frame and stator
3.
assembly (22).
4.
Secure front bracket (3) with four screws (2).
e. INSTALLATION
1.
Replace motor in unit. Refer to Paragraph 4-24.
2.
Connect power supply.
5-11. COMPRESSOR
a. SAFETY PRECAUTIONS.
1.
Compressor motor burnout produces acid which can cause severe burns on skin
contact.
2.
Wear rubber gloves to avoid acid burns when handling sludge from a burned out
compressor.
3.
When discharging gas or liquid refrigerant avoid eye or skin contact with the
product. Sudden and irreversible skin damage can result from freezing.
If the entire refrigerant charge is to be removed, it should be discharged outside
4.
enclosed areas.
5. Do not discharge reftigerant near an open flame. Highly toxic and corrosive gas
may result.
Wear thermal protective gloves and a face protector or safety glasses when skin
6.
or eye contact with refrigerant is possible.
b. DIAGNOSING COMPRESSOR MOTOR BURNOUT.
Motor burnout indicates other problems contributed to the failure. These
1.
problems must be corrected or avoided to prevent a repetition of the burnout.
2.
A compressor motor that fails to to start may be due to improper voltage, a
malfunction of the compressor start relay, or a compressor mechanical fault.
5-36
