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
THIS SECTION COVERS:
OCP Display and Instrument Loop
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Unit
.
OCP DISPLAY AND INSTRUMENT LOOP MALFUNCTIONS
Table 2. OCP Display and Instrument Loop Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
Open OCP inner panel to expose the sub-
1
Pilot light fails to light for BIT
PLC Slot 6 Output card or light failure.
panel. Locate the Slot #6 card and the
test.
output terminal for the failed light. Perform
Or
BIT test "1" where all indicator lamps are lit.
Check for AC 110 volts between the terminal
Pilot light fails to light when
and ground.
expected.
1) If voltage is not found, replace the Slot
#6 output card (WP 0060).
2) If voltage is found, replace the light (WP
Output terminal reference:
Standby
0
Run
1
MF Clean
2
Check MF
3
MF Integrity
4
Clean Strainer
5
MF Backwash Cycle Fail
6
MF Backwash Flow Low
7
Air Pressure Low
8
MF TMP High
9
RO Tank Level Low
10
RO Temp High
11
RO Feed Pressure Low
12
RO Operating Pressure High
13
Product TDS High
14
MF Backwash
15
3)
If not corrected by light replacement,
check the wiring for open circuit.
0035 00-4
