ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
CONTROL INSTRUMENTS
3. Mark the sensor cable routing from the sensor to the transmitter in the Instrument/Solenoid Panel
Box (see Figure 5 for the sensor and box locations).
a. Cut the tie wraps that secure the sensor cable along it routing from the sensor to the
transmitter.
b. Unscrew the ring nut from the panel box that the cable runs through.
c. Disconnect the transmitter sensor cable from the back of panel mounted flow transmitter.
Refer to REPLACE and Panel-Mounted Flow Transmitters.
d. Pull the wiring through the panel box and remove the sensor and its cabling.
INSTRUMENT/SOLENOID PANEL BOX LOCATION
FLOW SENSORS LOCATIONS
FLOW SENSORS RING NUTS
Figure 5. Flow Sensor and Instrument/Solenoid Panel Box Location.
4. Clean the area where the sensor mounts and inspect for any condition that could cause leakage.
5. Install the new flow sensor as follows:
a. Place a small amount of valve seal lubricant on the two O-rings on the sensor to make
installation into the tee mount easier.
b. Install the sensor into the tee mount.
c. Install the locking pin.
d. Route the sensor cable along the cabling run that was marked earlier during removal and
secure the sensor cable and other cabling in the run with tie wraps.
e. Feed the cabling through the ring nut and panel box.
f. Connect the new sensor cable to the transmitter. Refer to REPLACE and Panel-
Mounted Flow Transmitters.
6. Run the TWPS and check for leaks and proper operation.
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