ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0059 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
OPERATING CONTROL SYSTEM TOP PANEL
2. Install the new alarm horn as follows:
a. Position the alarm horn in the panel.
b. Install and tighten the new plastic ring nut to secure the alarm horn to the panel. Do not
over-tighten.
c. Attach the wires to the screw connections in accordance to the wire tags.
d. Tighten the screw connections to secure the wires.
e. Remove the wire tags if necessary.
f. Reinstall the protective box, close and secure the operating control panel top panel.
10-Turn Potentiometer Replacement:
Parts (TM 10-610-309-24P):
Potentiometer, 10-turn, precision
Counting Dial
Material:
Soldering iron
Equipment Condition:
Army TWPS: Generator off and TWPS main breaker off
Marine Corps TWPS: TWPS disconnected from power source
Replace the precision 10-turn potentiometer on the operating control panel top panel as follows:
WARNING
Electrical hazard. Army personnel: make sure that the generator is off and the
TWPS main breaker is off before working on the control panel. Marine Corps
personnel: make sure that the TWPS is disconnected from its power source before
working on the control panel. Failure to observe this warning could result in
serious injury or death from electrical shock.
1. Remove the potentiometer as follows (see Figure 13):
a. Open the OCP top panel, remove the protective box and locate the 10-turn
potentiometer.
b. Tag the wires attached to the potentiometer.
c. Unsolder the wires from the solder lugs and remove the connecting wires.
d. Loosen the setscrew in the knob of the counting dial.
e. Remove the dial by gently pulling the dial while turning it clockwise.
f. Remove the ring nut that secures the potentiometer to the panel.
g. Remove the lock washer and key washer from the shaft.
h. Remove the potentiometer from the control panel.
0059 00-16
