TM 5-3805-291-23-1
AIR CONDITIONING SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
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TEST PROCEDURE FOR TESTING ARC SUPPRESSOR
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N OT E
AC systems use pressure switches in order to protect AC system. Arc suppressors protect other electrical
components in AC system. Arc suppressors are applied in order to discharge electrical inductance when
compressor disengages. Failure of arc suppressor can affect reliability of pressure switch. Failure of arc
suppressor may cause failure of pressure switch.
427-C2005
1.
Place multimeter in DIODE test mode.
2.
Place red probe in red terminal (positive terminal) of multimeter.
3.
Place black probe in black terminal (negative terminal) of multimeter.
4.
Place red probe on Pin 2 of connector on arc suppressor. Place black probe on Pin 1 of connector.
5.
Multimeter should display a value between 0.5 and 1.0 VDC.
6.
Place red probe on Pin 1 of connector on arc suppressor. Place black probe on Pin 2 of connector on arc suppressor.
7.
Multimeter should display OL.
8.
If conditions listed in steps 5 and 7 do not exist, component should be considered faulty. Component will not provide
adequate protection.
9.
Replace component if component has failed.