Take great care when working around energized electrical equipment. Contact
between unprotected body parts and electrical conductors can cause serious in-
jury or death. Do not wear jewelry or other conductive items while servicing
energized electrical equipment. Failure to comply with these precautions can
cause serious injury or death.
Repair the drains only after the affected circuit has been secured, locked out, and
tagged out. Performing repairs with the circuit energized may result in injury.
2. Use a multimeter to check for available voltage at the power terminals (figure 2, item 1). If voltage is present,
ensure that the proper circuit breaker is OFF, locked out, and tagged out (FM 55-502). If no voltage is
present, continue with the procedure.
Figure 2. Automatic Drain Valve Components
3. Remove the nut (figure 2, item 2) that retains the solenoid (figure 2, item 3) to the coil (figure 2, item 4).
4. Remove the solenoid (figure 2, item 3), observing the direction of flow indicated on the solenoid (figure 2,
item 3) so that it can be reassembled in the same direction.