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:
PLC Processor and Power Supply
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Unit
.
PLC AND POWER SUPPLY MALFUNCTIONS
Table 1. PLC Processor and Power Supply Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
All lights and displays are
Check primary circuit breaker CB214 and
1
Transformer primary or secondary circuit
OFF. Power ON light is OFF.
secondary circuit breaker CB216. Reset if
breaker is tripped.
Main circuit breaker is ON.
tripped. If the breaker trips again after
E-stop is pulled put.
resetting, troubleshoot the 120 VAC circuits
Generator power is
for a short.
established to the TWPS.
2
OCP power light is ON. All
PLC rack power supply fuse blown, or
Open the OCP display panel to expose the
other lights are OFF.
power supply failure.
sub-panel. Locate the PLC Processor at the
Displays show zeros.
left end of the PLC rack. If the POWER light
is out, replace the 13-Slot Chassis power
supply (WP 0060).
PLC Processor, power supply or chassis
If the POWER light is ON, the RUN light is
failure.
OFF and the FLT light is OFF:
1) Turn the Main Breaker to OFF and then
to ON. If the problem remains,
continue.
2) Insert the PLC Processor key. Toggle
from RUN to PROG and back to RUN.
3) If this clears the problem, return to
operation.
4) If this does not clear the problem or if
the failure repeats, replace the PLC
Processor. If replacing the PLC
Processor does not clear the problem,
replace the 13-Slot Chassis power
supply (WP 0060).
5) If the failure still exists, replace the
chassis (WP 0060).
0035 00-2
