ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0027 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
OPERATION UNDER UNUSUAL CONDITIONS
3. Heat-up the TWPS systems as follows (see Figure 2 for valve locations):
a. Start the raw water pumps.
b. When the MF feed tank is about one-third full, close Raw Water Flow Valve V-107 in
Adaptor A-05 until only a small flow is discharged from the hose into the MF feed tank.
c. Set the Mode Switch to MF FILL/HOLD. (If flow is not observed during the FILL/HOLD
cycle, set the Mode Switch back to Standby and repeat the FILL/HOLD).
d. When the FILL cycle is complete, set the Mode Switch to RUN and start the MF feed
pump.
e. When the RO Feed Tank Level reaches 20%, set the Tank Heater switch to AUTO 2.
f. When the MF feed pump stops after filling the RO feed tank, set the Mode Switch to
Standby for 10 seconds and then to RO Clean.
g. Remove the 4-in. waste hose from the TWPS waste outlet. Install the cap on the outlet.
(On the A-TWPS, the 4-in waste hose can be capped instead of the TWPS connection as
long as the hose is brought inside the enclosure.)
h. Close HP Pump Valve V-212.
i. Open Clean Mixing Valve V-703.
j. Reset to clear any alarms.
k. Start the RO feed pump to mix the water as it is heated by the RO feed tank (electric
immersion) heaters.
l. When the water temperature reaches approximately 90 degrees Fahrenheit (as indicated
on RO tank Temperature Indicator TI-201 at the left end of the tank), circulate warm
water through the RO to remove ice from within the RO system before full startup as
follows:
1) Open Clean Return Valve V-702.
2) Open HP Pump Inlet Valve V-212.
3) Close Clean Mixing Valve V-703.
4) Slightly open the HP Pump Drain Valve V-215 under the HP pumps. Direct the
drain tube into a bucket and fill the bucket. Then close valve V-215. (The HP
pump cases may leak slightly at the segments until warmed).
5) Allow the water to circulate for at least 20 minutes or until the RO reject pipe
feels warm. The tank level should initially drop to 60 to 70% and flow should be
displayed on the reject flow meter. Note that some product water may be
produced. Stop recirculation before the level drops below 20%.
6) Stop the RO Feed Pump.
7) Set the System Mode Switch to Standby.
m. Circulate warm water through the MF to remove ice from within the MF system before full
startup as follows:
1) Open MF Cleaning Feed Valve V-704.
2) Close HP Pump Inlet Valve V-212.
3) Set the MF Clean Switch to FILL/RECIRC.
4) After 15 minutes, set the MF Clean Switch to OFF.
n. Stop the RO feed pump.
o. Set the Tank Heater switch to OFF.
p. Close MF Cleaning Feed Valve V-704.
q. Close Clean Return Valve V-702.
r. Remove the cap from the TWPS waste outlet and connect the 4-in., red-banded waste
out hose.
s. Open RO Feed Tank Main Drain Valve V-412 to drain the tank. Close the valve when the
tank is drained.
0027 00-3
