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
Table 6. Normal Instrument Readings and Response to Changes Continued.
Normal Reading
Reading Changes
Response to Changes
RO Feed Pressure
This changes with the water TDS and the
Wind and tide may change the TDS of
water temperature.
seawater and brackish water sources
which will require a change in operation
pressure.
Any increase in pressure which is
associated with RO element fouling will
be noted by the RO %Clean calculation.
RO Reject Flow
12 to 20 gpm at start up before starting
the HP pumps.
At 20 gpm product flow
32 to 38 gpm range
34 to 36 gpm normal
At 25 gpm product flow
27 to 33 gpm range
29 to 31 gpm normal
RO Feed Tank Level %
15% or higher at the end of each
If near 0%, the RO Feed Tank Level Low
Notify Unit Maintenance. Refer to
backwash.
alarm will come on.
Troubleshooting WP0035.
95 to 105% for several minutes before the
At 115%, the RO Feed tank overflows.
Switch to Manual Flow Control and
start of a backwash.
continue operation. If manual flow control
does not work, shut down and notify Unit
Maintenance.
RO %Salt Rejection
99% or higher.
The minimum value which initiates the
Product TDS High alarm is listed in the
table below.
Seawater and other
98.5%
sources over 20,000 mg/l
Brackish water 5000 to
98%
20,000 mg/l
Fresh water and brackish
95%
water to 5000 mg/l
Schedule RO cleaning before the
Operating data log shows a continuing
minimum %Salt Rejection value is
decrease over time.
reached.
0016 00-24
