ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0035 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
TROUBLESHOOTING PROCEDURES
UNIT TROUBLESHOOTING - TWPS CONTROL SYSTEMS
Table 3. OCP Miscellaneous Control Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
3
Drain cycle fails to occur
SV-903 failure.
Return to standby. Step through the BIT test
cont.
when MF Clean Switch is set
to the test for SV-903. If the valve fails to
to Drain #3.
operate, refer to WP 0034, Table 4.
PLC Slot 3 input card or MF Clean
Open the OCP display panel to expose the
(Rotary) Switch failure
sub-panel. Locate the Slot 3 card. Set the
MF Clean switch to Fill/Recirc.
1) If the channel 4 and 5 lights are ON,
replace the Slot 3 input card (WP
open the wire way and check for AC-
Volts between terminals IN4 or IN5 and
ground. If there is voltage, replace the
Slot 3 input card (WP 0060).
2) If there is no voltage, replace the MF
Clean (Rotary) Switch (WP 0059).
Rinse cycle fails to occur
PLC Slot 3 input card or MF Clean
Open the OCP display panel to expose the
when MF Clean Switch is set
(Rotary) Switch failure.
sub-panel. Locate the Slot 3 card. Set the
to Rinse.
MF Clean switch to Fill/Recirc.
1) If the channel 3, 4 and 5 lights are ON,
replace the Slot 3 input card (WP
2) If the channel 3, 4 or 5 light is OFF,
open the wire way and check for AC-
Volts between terminals IN3, IN4 or IN5
and ground. If there is voltage, replace
the Slot 3 input card (WP 0060).
3) If there is no voltage, replace the MF
Clean (Rotary) Switch (WP 0059).
Drain #2 fails to occur
PLC Slot 3 input card or MF Clean
Open the OCP display panel to expose the
automatically 10-seconds
(Rotary) Switch failure
sub-panel. Locate the Slot 3 card. Set the
after advancing the switch to
MF Clean Switch to Drain #2.
the Drain #2 position.
1) If the channel 3, 3 and 5 lights are ON,
replace the Slot 3 input card (WP 0060).
2) If the channel 3, 3 or 5 light is OFF,
open the wire way and check for AC-
Volts between terminals IN3 or IN5 and
ground. If there is voltage, replace the
Slot 3 input card (WP 0060).
3) If there is no voltage, replace the MF
Clean (Rotary) Switch (WP 0059).
END OF WORK PACKAGE
0035 00-18
