ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
MICRO-FILTRATION SYSTEM
Solenoid Coil Replacement:
Parts:
Solenoid Coil (TM 10-4610-309-24P)
Equipment Condition:
Army TWPS: Generator off and TWPS main breaker off
Marine Corps TWPS: TWPS disconnected from power source
Replace a solenoid coil in the instrument/solenoid panel box as follows:
WARNING
The air system must be bled prior to working on components of the air system.
Failure to observe this warning can result in injury to personnel and damage to
equipment.
1. Bleed the air system. Refer to REPLACE and Solenoid Valve Manifold Assembly.
2. Remove a solenoid coil as follows (see Figure 10):
a. Open the instrument/solenoid panel box cover.
b. Loosen the two screws that secure the instrument panel and open the instrument panel
to access the solenoid valve manifold assembly.
c. Locate the solenoid coil to be replaced.
d. Tag the wire connections from the solenoid coil at the terminal strip.
e. Remove the two screws securing the solenoid coil to the valve.
f. Carefully pull the solenoid coil from the valve.
TERMINAL STRIP
SOLENOID COIL
SCREWS
Figure 10. Solenoid Coil Replacement.
3. Install new solenoid coil.
a. Position the new solenoid coil on the valve.
b. Secure the solenoid coil to the valve using the two mounting screws.
c. Connect the wires from the solenoid coil to the terminal strip.
d. Remove wire tags.
e. Close the instrument/solenoid panel box.
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