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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-24.
LOW REFRIGERANT PRESSURE SWITCH (S5) - Continued.
TESTING/ADJUSTMENT
1.
Using multimeter, check continuity between two lead terminals. If continuity is indicated (switch closed), switch is
defective. Replace switch.
2.
Connect manifold blue hose to nitrogen cylinder.
3.
Connect yellow 1/4 inch (0.64 cm) hose to pressure line (6).
4.
Using multimeter, switch should close at 1 5 to 25 psig (1 to 1.8 kg/cm2) and open at 35 to 45 psig (2.5 to 3.2
kg/cm2).
5.
If switch can not be adjusted to ranges in step 4, replace switch.
INSTALLATION
1.
Drill 5/32 inch holes through three terminals (1) on replacement switch.
2.
Fungus proof replacement switch per MIL-V-173.
3.
Place switch (3) in mounting position.
4.
Install two screws (12), lockwashers (11), and flat washers (10).
5.
Install two clamps (7) with two screws (4), four flat washers (5) and (9), and two locknuts (8).
6.
install clamp to compressor electric box with screw.
7.
Install high refrigerant pressure line (6) to top of compressor (use 5/8" wrench).
8.
Reconnect leads-tagged in removal and remove tags.
9.
Install cover (2).
10. Leak test all newly connected joints and those in the repair area (para 5-15).
FOLLOW ON PROCEDURE
1.
Replace drier filter (para 5-26).
2.
Connect air conditioner input power at source.
3.
Check refrigerant level (para 5-17) and charge if necessary.
4.
Install right front condenser panel (para 4-28).
5-50
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