ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0027 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
OPERATION UNDER UNUSUAL CONDITIONS
5. Perform the second filtration pass as follows:
a. Note the Total Product Water reading on the OCP.
b. Continue with the normal initial start up and operation (WP 0014). 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.
c. Leave the antiscalant pump speed dial to OFF (fully counterclockwise).
d. Batch the hypochlorite using 2nd pass product water.
e. After measuring the product TDS and chlorine (WP 0017), connect the product water
hose to Adaptor A-15 on the distribution tank.
f. Using the distribution pump, keep the MF feed tank to full with water from the "First
Pass Product Water" distribution tank (MC-TWPS) or the 9k extended distribution system
tanks (A-TWPS).
g. When the last of the "First Pass Product Water" is put into the MF feed tank, allow the MF
feed tank to be emptied by the MF Feed Pump. Keep the TWPS operating until it shuts
down due to low RO Feed Tank level or low RO feed pressure.
6. Note the Total Product Water reading on the OCP at the end of the second filtration pass.
Subtract the first reading from this reading to calculate the total water produced.
7. Repeat the double pass filtration procedures as long as the mission demand requires. Calculate
the total water produced each time.
8. Replace the NBC filter when the total water produced by the second pass operation reaches
150,000 gallons.
Double Pass NBC Filtration Using Three TWPS
1. Wear appropriate protective gear as required.
2. Set up first two TWPS units for normal operation (WP 0007) except as noted below (see Figure
11):
a. Set up only one two-tank 6k standard distribution system to be shared by the two units.
b. Interconnect the two distribution tanks as for normal operation.
c. Do not connect a distribution pump to the tanks discharge hose.
d. Connect the product hose P02 and Adaptor A-15 from one TWPS unit to one of the
distribution tanks.
e. Connect the product hose P02 and Adaptor A-15 from the second TWPS unit to the other
distribution tank.
f. Do not set up the NBC tanks for the first two TWPS.
3. Set up the third TWPS unit for normal operation (WP 0007) except as noted below (see Figure
11):
a. Unscrew the inlet coupling from the raw water pump for the third TWPS unit.
b. Unscrew the inlet coupling from the distribution pump for one of the first two TWPS and
install it on the raw water pump.
c. Connect the raw water pump to the distribution system hose P04 for the first two units
where the distribution pump would normally be connected.
4. Set up the NBC tank for the third TWPS (see Figure 11) (WP 0010).
0027 00-14
