M8A3 Filter Unit System
M8A3 filter unit system malfunctioning.
M2A2 air purifier fails to operate. Do steps 1 thru 7.
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts a metal surface a direct
short may result in instant heating of tools, damage to equipment, and injury or death to personnel.
There are two air purifiers in the M88A1. Troubleshooting is the same for each.
Place red lead of multimeter to bare metal surface of M2A2 air purifier and black lead to ground. If
continuity is present, go to step 2. If continuity is not present, repair/replace ground wire.
Disconnect wire from M2A2 air purifier. Place red lead of multimeter in wire and black lead to ground.
Turn MASTER and purifier switches on and check for voltage. Turn MASTER and purifier switches
OFF. If voltage is present, repair/replace M2A2 air purifier (see WP 0439 00). If voltage is not present,
go to step 3.