Repair Air Conditioner Assembly ( Air Conditioner 2; Accommodations)

TM 55-1905-223-24-17

4-14.

Repair Air Conditioner Assembly ( Air Conditioner 2; Accommodations)

This task covers:

a. Adjustment

Repair

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's

Except for cooling thermostat

replacement, system pumped

Tool kit, electrician's

down and all tubing, lines, and

compressor purged residual

Tool kit, refrigeration and

refrigerant charge (Item 10, Table

air conditioning

4-1).

Electrical power OFF and circuit

Torque wrench

tagged "Out of Service."

5120-01-092-3278

Materials/Parts

Electrical tag, Item 1, Appendix C

Pressure switch P/N P28DA-1

Cooling thermostat P/N A19ABC-74

Hot gas valve P/N A9SE

Liquid line valve P/N ME25S270

Refrigeration ball valve P/N 592A-13ST

Refrigeration ball valve P/N 587A-14ST

Angle valve P/N 600A-4B

Pressure relief valve P/N 3014

Moisture indicator P/N 60-14S

R-22 refrigerant, Item 7, Appendix C

ADJUSTMENT

Adjust the oil pressure switch as follows:

(1) The proper oil pressure cutout setting is 10 psi net oil pressure on the oil pressure switch (FIGURE

4-4). When a new pressure switch is installed the setting on the switch must be checked for proper

setting. If the pointer (9) is not set (or pointing to) 10 psi on the setting indicator (10), the switch

must be adjusted.

4-28