ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0033 00
TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
Table 4. Automatic Valves, Air Solenoid Valves Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
Backwash Fail Alarm comes
Automatic valve failed to operate.
Shut down to standby. Conduct BIT self
on during backwash.
test procedure (WP 0013). Notify Unit
Maintenance to troubleshoot any valve
which fails to cycle.
Backwash air supply solenoid valve XV-
Continue with BIT and verify operation of
901 solenoid coil failure.
solenoid valve XV-901. If it does not
operate, remove the spare coil from the BII
and replace (WP 0045). If this does not
correct the failure, notify Unit Maintenance.
Backwash or drain air supply solenoid
Notify Unit Maintenance.
valve failure.
Pressure transmitter PT-102 failure.
Notify Unit Maintenance.
PLC output card #5 relay failure.
Notify Unit Maintenance.
If Feed Flow Control is set to Manual,
Notify Unit Maintenance. Continue
XV-912 failure.
operation in Automatic.
2
Automatic valve (except
Valve actuator.
Notify Unit Maintenance.
V-202) fails to cycle when
tested during BIT self test.
PLC output card #5 relay failure.
Notify Unit Maintenance.
Solenoid coil or solenoid valve failure.
Notify Unit Maintenance.
3
Automatic valve does not
Damaged valve liner or failed shaft
Notify Unit Maintenance.
cycle fully to the de-energized
bearing.
or BIT energized position.
4
Filtrate Flow Control valve
Control loop failure.
Set the flow control to Manual. Startup. If
V202 fails to operate during
the flow can be controlled manually,
BIT test.
continue operation using the manual flow
Or
control. Notify Unit Maintenance.
RO Feed Tank fills rapidly
Valve actuator or positioner failure.
If the manual flow control does not work,
and overflows. The RO Feed
shutdown and Notify Unit Maintenance.
Tank % Level indicator
properly reads the increasing
level and shows a level of
approximately 110% at
overflow.
0033 00-12
