ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0015 00
OPERATOR INSTRUCTIONS
START-UP AFTER A SHORT TERM OR STANDBY SHUTDOWN
WITHOUT DRAINING OPERATION UNDER USUAL CONDITIONS
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 t he pump.
9. 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 Adapter (A-01) from the pump skid and make certain that the
flapper seat is clean (see Figure 3). Install and fill the pump again and repeat. If after 20
minutes, the pump has not primed, refer to WP 0033, Troubleshooting.
10. When using both pumps, start the Motor-Driven Pump P-2 after the discharge hose from P-1
pump is pressurized. Start the P-2 pump by pushing the Raw Water Pump #2 START button.
CAUTION
Do not leave the pump running with V-107 closed without opening Vent Valve V-102.
Failure to observe this caution will cause the pump to overheat and damage the shaft seal.
11. If the MF Feed Tank reaches 3/4 full and you are not ready to continue with start-up, close Raw
Water Flow Control Valve V-107, stop Motor-Driven Raw Water Pump P-2 (if in use as the
second pump), crack open Vent Valve V-102 and leave the Diesel-Driven Raw Water Pump P-1
running at idle.
ESTABLISHING RAW WATER FLOW WITH ONLY THE MOTOR-DRIVEN RAW WATER PUMP
1. Set valve positions as follows (see Figure 5 for valve location):
a. Partially OPEN Raw Water Flow Control Valve V-107 on Adapter A-05.
b. Fully OPEN Vent Valve V-102 on Adaptor A-02.
c. Check that the pump Drain Valve V-105 on Motor-Driven Raw Water Pump P-2 is closed.
2. If the pump had lost its prime, perform the following:
a. Disconnect the pump vent hose from the top of Adaptor A-02.
b. Use the priming pitcher to pour water through Vent Valve V-102 until the pump case is
full.
c. Connect the vent hose after priming.
3. Start the P-2 pump by pushing the Raw Water Pump #2 START button on the OCP.
4. 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.
5. 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), the length of hose out of the water, and how much water remained in the hose during
the short term or standby shutdown. The listing below provides typical times to be
expected with 30 ft. of hose out of water and with no water in the raw water hose.
0015 00-7
