ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0027 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
OPERATION UNDER UNUSUAL CONDITIONS
7) Wash out the 1000 ml measuring cup.
WARNING
Caustic chemical. Wear goggles, a protective face shield, chemical gloves, and a
chemical apron when handling caustic solution. Contact with caustic will result in
severe chemical burns. Keep water ready when handling. Avoid inhaling chemical
fumes. If the caustic spills, immediately flush the area with water from the
auxiliary hose. Failure to observe this warning may result in severe irritation of the
nose, throat, and eyes. Contact with skin will result in severe chemical burns if not
immediately rinsed off.
8) Put on the chemical apron, the goggles, the face shield and the chemical gloves.
Open one container of AC-350 caustic and slowly pour out the calculated amount
into the measuring cup.
9) Slowly pour the measuring cup into the chemical bucket. Rinse the measuring
cup in the chemical bucket and then in a bucket of clean water.
10) Mix the caustic with the chemical mixing paddle.
11) Check the product water pH (WP 0016). Adjust the stroke as needed to achieve
a pH between 10.5 and 11.
12) Connect the product hose to the A-15 adaptor to fill the distribution tank(s).
c. Continue with normal startup and operation. If possible, push the product flow to 29 to 30
gpm from each unit.
6. Operate the third TWPS unit for the second filtration pass as follows:
a. Set the speed switch on the antiscalant pump to OFF (fully counterclockwise).
b. Set up the hypochlorite pump for normal operation.
c. Continue with normal startup and operation after the distribution tanks for the first two
TWPS units are at least full. Fully close HCV-401 and HCV-401A to maximize
production rate. Do not push Backwash Start. The second filtration pass operation
does not require backwashing. Omitting this step makes more product water available
for use.
d. Leave the antiscalant pump speed switch set to OFF (fully counterclockwise).
e. Replace the NBC filter when the total water produced by the third TWPS unit reaches
150,000 gallons.
At the end of the mission, the TWPS equipment must be decontaminated or replaced as instructed under
Equipment Decontamination After an NBC Water Purification Mission below.
0027 00-16
