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Page Title: INSPECTION
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TM5-4120-375-14 PRESSURE SWITCH (CONT.) LOCATION/ITEM ACTION REMARKS INSPECTION 5. Pressure  Switch a. Inspect for damage. b. Repair or replace if damaged. TEST 6. Pressure  Switch a. Using a multimeter check for continuity between pins, A-B, T1-T2, L1-A and L2-B. b. If continuity does not exist pressure switch is defective. c . Repair or replace if defective. ADJUSTMENT NOTE Gauges on pressure switch are not accurate. DO NOT rely on readings. 7. Pressure  Switch a. Remove one screw securing pressure switch cover to pressure switch . b. Install wires in accordance with Appendix F. c. Connect a pressure gauge to the low pressure sampling tubing and to a cylinder of dry nitrogen (Item 8, table D-1). d. Let nitrogen flow into the low pressure sampling tubing until the pressure gauge indicates 25 psig (1.75 kg/cm2) activating the low pressure switch. NOTE Low pressure switch must be activated for testing and adjustment of high pressure switch. 5-30

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