ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
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OPERATOR INSTRUCTIONS
MAINTAINING NORMAL OPERATION UNDER USUAL CONDITIONS
NOTE
At very low pump flows, it may require two hours to clearly observe a drop in hypochlorite
level in the chemical bucket.
1. Check:
a. The pump flow rate is set based on the product flow rate and the amount of free chlorine
required as listed in Tables 3 through 5 in WP 0014, Initial Start-Up or Start-Up with the
System Fully Drained.
b. The drop in hypochlorite level in the bucket varies, but should always be clearly observed
to drop from one hour to the next.
c. If a drop is not observed, refer to troubleshooting in WP 0033.
2. Refill:
a. Refill when the remaining level is between the 1/2 and 1-gallon marks inside the bucket.
b. Using the product utility hose, open valve V-511 to slowly fill to the bucket to the 5-gallon
level.
c. Slowly add the number of packets of hypochlorite required for the desired free chlorine
level and product flow rate as indicated in Tables 3 through 5 in WP 0014.
d. Rinse the paddle with water from the product utility hose. Stir the water in the bucket with
the mixing paddle to thoroughly mix in the hypochlorite. Be careful not to damage the
suction strainer. Rinse the paddle again when finished.
3. Pump Settings vary with the product water flow and the free chlorine required as indicated in
Tables 3 through 5 in WP 0014.
4. Check the Prime:
a. Check that the pump return line hose is directed into the bucket.
b. Rotate the black knob on the priming valve counter-clockwise one half turn and check
that the chemical is discharging through the pump return line hose. If not observed, refer
to troubleshooting in WP 0033.
c. Return the black knob on the priming valve to its normal position.
CHECKING AND REFILLING THE BISULFITE CHEMICAL SYSTEM
WARNING
Chemical dust. Wear the protective face shield, chemical gloves, and a dust mask
when handling sodium bisulfite. Avoid inhaling chemical dust or fumes. Failure to
observe this warning may result in mild irritation of the nose, throat, eyes, and
skin.
CAUTION
Failure to use bisulfite when operating on a chlorinated water source will lead to
destructive failure of the MF and RO membranes.
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