ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0017 00
OPERATOR INSTRUCTIONS
STANDBY OR SHORT-TERM SHUTDOWN OPERATION UNDER
USUAL CONDITIONS
NOTE
Before opening a drain valve, if the temperature is cold enough to freeze water, set the end
of the drain hose into a bucket so that water isn't drained onto the ground around the
TWPS where it can freeze into ice and create a hazard.
Use the heat gun to thaw any drain tube end that becomes blocked with ice. Note that the
heat gun must be plugged into the generator 110-volt outlet and not the TWPS PDP 110-
volt outlet.
h. Set all valves to the Drain-Down position as listed in Table 2 and shown in Figure 2 and
Figure 3. Be sure to open valves V-302, 303, 304 and 410 that were closed in step d.
i. When water stops draining from a drain tube, disconnect the tube from its valve and hold
the end up to drain the residual water from the tube. Then reconnect the tube to its
valve. (It is not necessary to perform this step for a drain tube that is secured to its valve
with a hose clamp.)
9. Drain the chemical system as follows:
a. Disconnect the chemical pump discharge tubes at both ends and drain. Use the air hose
if needed to blow them dry.
b. Disconnect the chemical pump suction tubes from the pump and from the foot valves. Be
sure that they drain. Use the air hose if needed to blow them dry.
c. With the tubes removed, turn the black knob on the 4-function valves to the prime
position.
d. Set the Bisulfite and Antiscalant/Chlorine switches to ON to pump the solutions from the
pump heads back into the chemical buckets.
e. Turn the pumps OFF when no more water is coming out of the pumps.
f. Disconnect the air hose at the PI-902 end and store.
10. Drain the product water distribution system (and the extended distribution system as applicable)
as follows:
a. Remove the distribution nozzles from the distribution hoses.
b. Pump the distribution tanks out through the distribution hoses.
c. Lift each distribution tank on the side opposite the tank discharge connection to allow the
distribution pump to pump as much water out of the tanks as possible.
d. Stop the distribution pump.
e. Disconnect and drain the distribution hoses from the distribution pump and from the
distribution tanks.
f. Do not disconnect the hose heater blanket and pump heater collar electrical power
cables.
g. Open the distribution pump drain.
h. Finish emptying the distribution tanks.
WARNING
Electrical hazard. To prevent an electrical hazard, do not disconnect the hose heater
blanket and pump heater collar electrical power cables until the Hose/Pump Heater switch
has been turned OFF and the Main Breaker has been switched to the OFF position. Failure
to observe this warning may result in injury or death from electrocution.
0017 00-13
