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TM 55-1905-223-24-17
(6) Remove the pressure switch (3) with capillary tubing (1) and (6) attached.
(7) Install new pressure switch to its mounting bracket with two screws (4).
CAUTION
Avoid sharp bends or kinds in capillary tubing (1) and (6).
(8) Connect compressor crankcase connection (7).
(9) Connect oil pressure line connection (2).
(10) Coil excess tubing (1) and (6), but allow a small amount of slack to reduce noise.
(11) Replace cover (5) with screw (8).
(12) Open service valves and receiver outlet valve to allow refrigerant back into system.
(13) Restore electrical power and run air conditioner. Check for proper operation. Check refrigerant sight
glass and add R-22 refrigerant as required (Item 6, Table 4-1).
(14) Remove "Out of Service" tag from circuit.
b.
Replace cooling thermostat (1, FIGURE 4-5) as follows:
(1) Tag and disconnect electrical wiring to cooling thermostat.
(2) Remove screw (5) from clip (6) to disconnect bulb (4).
(3) Remove screw (3) and remove bracket (8).
(4) Remove two mounting screws (2) and remove cooling thermostat (1) with capillary (7) and bulb (4)
attached.
CAUTION
Avoid sharp bends and kinks in capillary tubing (7).
(5) Install new cooling thermostat (1) with two mounting screws (2).
(6) Install bracket (8) with screw (3).
(7) Mount bulb (4) with clip (6) and screw (5). Coil excess capillary tubing (7), but allow a small amount
of slack to reduce noise.
(8) Connect electrical wiring to proper terminals on thermostat.
(9) Restore electrical power and operate the air conditioner. Check for proper operation.
(10) Remove "Out of Service" tag from circuit.
4-31

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