ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0014 00
OPERATOR INSTRUCTIONS
INITIAL START-UP OR START-UP WITH THE SYSTEM FULLY DRAINED
OPERATION UNDER USUAL CONDITIONS
2. Disconnect the pump vent hose from the top of Adaptor A-02.
3. Use the priming pitcher to pour water through Vent Valve V-102 until the pump case is full.
Connect the vent hose after priming.
4. Start the P-2 pump by pushing the Raw Water Pump #2 START button on the OCP.
5. The pump will draw the air out of the suction hose and pump it through the open Vent Valve V-
102 and the vent hose. As the air is removed the water follows.
6. When pressurized water is observed discharging from the vent hose, the pump is primed. Close
Vent Valve V-102.
NOTE
The time required to prime the pump will depend on the elevation of the pump (suction lift)
and on the length of hose out of the water. The listing below provides typical times to be
expected with 30 feet of hose out of water.
Suction Lift (Ft)
Priming Time (Minutes)
5
3 to 5
10
5 to 10
15
10 to 15
20
15 to 20
CAUTION
Potential for overheating. While the pump is evacuating air from the suction hose, the
priming water circulates in the pump. After a period of time, the water and pump may get
hot. Check the pump regularly with your hand for heating. If the pump starts getting hot,
remove the vent hose, add more water to the pump, then reinstall the vent hose. Repeat
as needed to keep the pump cool until it begins pumping water. Failure to observe this
caution may result in overheating and damage to the pump.
7. If the expected time for priming is exceeded, stop the pump and check all of the hose couplings
that are out of the water. Specifically check the gaskets to be certain that they are free of sand
and dirt. Remove Check Valve Adaptor A-01 (see Figure 6) from the pump skid and make certain
that the flapper seat is clean. Install and fill the pump again and repeat. If after 20 minutes, the
pump has not primed, refer to WP 0033, Troubleshooting.
8. Once P-2 is operating and the system is primed, adjust Raw Water Flow Control Valve V-107
(see Figure 6 for valve location) about half open to provide a steady flow of raw water into the MF
Feed Tank. Depending on the elevation, if the valve is opened too much initially, the pump could
lose prime.
9. Take a raw water sample from the MF Feed Tank and measure the TDS using the TDS meter
provided with the MC-TWPS or from the WQAS-P on the A-TWPS. Refer to Water Quality
TDS display indicates the measured TDS.
0014 00-10
