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ALIGN REFRIGERANT PIPING SYSTEM

TM-55-1925-273-10-2 Inland and Coastal Large TUG (LT) NSN 1925-01-509-7013 (EIC XAG) Manual

UNIT EMERGENCY OPERATION

TM 55-1925-273-10-2

0128 00

The following gauges should also be in the NORMAL operating range: Liquid line temperature gauge, suction pressure

gauge, suction temperature gauge, discharge pressure gauge, oil pressure gauge.

NOTE

Oil pressure must be 20 PSI above suction pressure.

Observe compressor operation for 5 minutes.

NOTE

Liquid refrigerant return to the compressor will be indicated by a sudden drop in suction tem-

perature and rapid fluctuation in suction pressure.

If there is no evidence of liquid refrigerant return to compressor, open the COMPRESSOR SUCTION valve (figure 1,

item 3) wide.

! CAUTION

If the suction temperature and oil pressure do not stabilize or if the compressor develops a knock,

stop the compressor by placing the power switch in the OFF position and notify unit mainte-

nance. Continued operation could damage the compressor.

When there is evidence of liquid refrigerant return to the compressor, adjust COMPRESSOR SUCTION valve

(figure 1, item 3) until proper suction pressure (2. 3 to 2.4 PSI) is indicated on the suction gauge.

END OF WORK PACKAGE

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