TM 10-4610-215-24TM 08580A-24/2(5) If switch has actuated, reduce weight on gage tester to equal 1237 psi (86.97 kg/cm2).(6) Switch should return to pretest state. Indicator light D1 should be on, D2 should be off.(7) If switch does not return to pretest state, calibrate switch.i. Calibration.(1) If necessary, remove adjusting screw access cover.(2) Add weight to gage tester equal to 1250 psi (87.89 kg/cm2),(3) If indicating light D1 is off, and D2 is on, turn adjusting screw counterclockwise until D1 is on and D2 isoff.(4) If indicating light D1 is on, and D2 is off, turn adjusting screw clockwise until D1 is out and D2 is on.NOTETo actuate switch at higher pressure, turn adjusting screwcounterclockwise. To actuate switch at lower pressure, turnadjusting screw clockwise. Switch should actuate at 1250 psi+1% (87.89 kg/cm2 ±1%).(5) Cycle high-pressure switch two times per steps (2) thru (8).(6) Replace access cover and gasket.(7) Remove switch from test set-up.3–19. LOW–PRESSURE SWITCH.a. General.This paragraph describes the disassembly, cleaning, inspection, repair, reassembly, test, andcalibration of the low–pressure switch assembly.b. Removal. If necessary, remove the low-pressure switch assembly from the junction box in accordance withparagraph 2-53.c. Disasse mbly. (Figure 3-16)NOTEPrior to disassembly, clean all external surfaces with a soft brushand a mild soap solution. Rinse with product water and allow toair dry.3-76
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