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Page Title: 5-24 LOW REFRIGERANT PRESSURE SWITCH (S5)
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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). This task covers: Inspection Removal Testing/Adjustment Installation INITIAL SETUP: Tools Tool kit, service, refrigeration unit (Item 1, Appendix B) Personnel: 1 Materials: Rags (Item 12, Appendix E) Nitrogen (Item 14, Appendix E) Varnish, moisture and fungus resistant (Item 16, Appendix E) Equipment Conditions: WARNING Disconnect input power to the air conditioner before performing any internal maintenance.  Voltages used can KILL.  Shutting the unit off at the control panel does not disconnect unit power. 1. Disconnect air conditioner input power at source. 2. Remove right front condenser panel (para 4-28). 3. Purge compressor (para 5-20). INSPECTION 1. Check that switch and cover are not dented, broken or cracked.  Replace switch and cover, if defective (see Figure 5-13). 2. Check bracket is not broken or cracked or dented.  Replace bracket, if defective. 3. Check that wire leads are properly connected (see Figure FO-3). REMOVAL 1. Remove cover (2). 2. Tag and disconnect leads. 3. Remove pressure line (6) from top of compressor (5/8" wrench). 4. Remove two screws (4), four flat washers (5) and (9), two locknuts and clamp (7). 5. Remove screw and clamp from compressor electric box. 6. Remove two screws (12), flat washers (10), and lockwashers (11). 7. Remove switch (3). 5-48

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