ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0016 00
OPERATOR INSTRUCTIONS
MAINTAINING NORMAL OPERATION UNDER USUAL CONDITIONS
INTERCHANGING CHEMICAL PUMPS
The antiscalant and the hypochlorite chemical pumps are used routinely for all TWPS deployments. The
bisulfite pump is only used when the raw water is taken from a chlorinated source. If the bisulfite
chemical pump is not being used, it is available as a spare in the event that one of the other two pumps
fails.
Interchange chemical pumps as follows:
1. Perform a Standby Shutdown without Draining Down. Refer to WP 0017.
2. Do not shut off the TQG.
3. Do not shut off the air compressor.
WARNING
Irritant. Wear a protective face shield and chemical gloves when handling
antiscalant chemical. Avoid inhaling chemical fumes. Failure to observe this
warning may result in irritation of the nose, throat, eyes, and skin.
Hazardous chemical dust and/or fumes. Wear the protective face shield, chemical
gloves, and dust mask when handling calcium hypochlorite. Avoid inhaling
chemical dust or fumes. Hypochlorite will give off chlorine vapor, which will burn
your nose, throat and lungs if breathed directly. Inhalation of calcium hypochlorite
dust may cause severe chemical burns. Direct contact with the eyes may cause
severe eye damage.
4. Flush the replacement chemical pump to remove any chemical residue that may remain from
previous use as follows:
a. Rinse the priming pitcher with product water from the distribution auxiliary hose then fill
the pitcher with product water.
b. Set the pitcher down in the operator station area in front of the bisulfite pump.
c. Place the chemical pump suction tube into the pitcher of water. Be sure the suction tube
inlet rests near the bottom of the pitcher.
d. Direct the return tube so that it drains to the ground. Do not place it in the pitcher.
e. Make sure that the chemical pump SPEED control dial is set to OFF (turned fully
counterclockwise; see Figure 10).
f. Set the Bisulfite Pump switch on the OCP to ON.
g. Prime the Bisulfite pump as follows:
1) Turn the speed dial to 80.
2) Note that the Bisulfite pump has started, then turn the stroke dial to 80.
3) Rotate the black knob on the priming valve one-half turn. Note that the chemical
solution is drawing up the suction tube, entering the pump housing and flowing
out the return tube.
h. Operate the Bisulfite pump in the priming mode for an additional two minutes after the
pump is primed.
i. After two minutes, turn the priming knob to its original position, turn the stroke dial to
zero, and turn the speed dial to zero.
j. Set the Bisulfite Pump switch on the OCP to OFF.
0016 00-26
