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
NORMAL INSTRUMENT READINGS AND RESPONSE TO CHANGES
Table 6 provides the normal readings to be expected from the OCP displays and the operator response to
changes in the readings.
Table 6: Normal Instrument Readings and Response to Changes.
Normal Reading
Reading Changes
Response to Changes
Feed Water TDS
Steady reading as input by the operator
Change in reading without operator
Notify Unit Maintenance. Note that the %
through the Feed Water TDS Set
adjustment.
Salt Rejection display will not be correct
adjustment.
and that the Product TDS High alarm may
come on without actual high TDS (or %
Salt Rejection).
MF Flow
210 to 225 gpm during MF Fill/Hold.
Decreasing flow during mission.
Inspect and clean the MF Feed Strainer
S-2 at the next PMCS shutdown.
Over 210 gpm during shell sweep step of
Decreasing flow during mission.
Inspect and clean the MF Feed Strainer
backwash.
S-2 at the next PMCS shutdown. (MF
Backwash Flow Low Alarm will come on
at 200 gpm).
60 to 70 gpm filling the RO Feed Tank, 50
Much higher flow and the RO Feed Tank
Switch to Manual Flow Control and
to 60 gpm after reaching 95 to 105%
overflows.
continue operation. If manual flow control
level.
does not work, shut down and notify Unit
Maintenance.
MF Trans-Membrane Pressure
Sudden increase and MF Trans-
3 to 5 psi at 50 to 60 gpm MF Feed Flow
See alarm response.
Membrane Pressure High alarm is on.
after cleaning. The alarm setting and the
maximum allowable pressure (psi)
0
depend on the water temperature ( F).
Temp
Alarm psi
Max psi
32
28
30
45
25
28
55
21
25
65
18
22
75
16
20
85
14
18
95
13
16
RO Feed Flow
52 to 58 gpm after startup and
Operating data shows a noticeable
HP pumps are wearing. Notify Unit
stabilization. 54 to 56 gpm most usual
decrease over and extended period of
Maintenance to repair pumps at next
range.
time.
opportunity within mission requirements.
Reading is very low or all zeros.
Notify Unit Maintenance. Refer to
troubleshooting WP0035.
0016 00-23
