ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0034 00
TROUBLESHOOTING PROCEDURES
UNIT TROUBLESHOOTING PROCEDURES TACTICAL WATER
PURIFICATION SYSTEM (TWPS)
Table 7. General RO System Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
6
RO Feed Pressure Low
Random low pressure occurrence.
Start up following normal procedures. If the
(cont.)
Alarm (continued).
alarm does not repeat and the RO feed
pressure reading on PI-202 is at least 40
psig, resume normal operation.
Pressure transmitter PT-201 or electrical
Attempt start up again and watch Pressure
wiring has failed.
Gauge PI-202. If the alarm comes on, but
the pressure does not drop below 35 psig:
1) Open the OCP display panel to
expose the sub-panel. Locate the
Slot #12 card. If the channel 2 light is
blinking, replace PT-201 with the
spare located in the BII (WP 0041).
2) Check again after installing. If the
channel 2 light is still blinking,
troubleshoot the wiring for an open
circuit or failed connector.
Pressure transmitter PT-201 or PLC Slot
Replace the Pressure Transmitter with the
12 Analog Input Card has failed.
spare located in the BII. If this does not
correct the problem, replace the PLC Slot
12 Card (WP 0060).
If Pressure Gauge PI-202 reads less than
35 psig when the alarm comes on proceed
as follows:
In-line strainer S-4 is plugged.
Remove, inspect and clean as needed
RO Feed Tank Strainer S-3 is plugged.
Remove tank cleanout cover. Remove
strainer and clean if plugged (WP 0041).
Pump impeller and wear ring are
Dissassemble pump and repair (WP 0052).
corroded.
7
Cleaning solution does not
High temperature alarm light is on.
Refer to WP 0035, table 2 for
heat up with heater switch set
troubleshooting.
to AUTO 2.
CB201 or CB204 Circuit Breaker Tripped.
Open PDP and check circuit breakers
Or
CB201 and CB204. Reset as needed. If it
trips again, check for shorts in the circuit for
The solution does not heat up
the heater protected by the breaker. Be
at least 30 degrees in 30
sure that the power source is secured.
minutes with the heater
1) Open the heater terminal box and
switch in AUTO 2.
disconnect the power cable wires.
Check for short in the cable and in
the heating elements. If in a heating
element, replace the heater
2) If in the cable, pull all of the wires and
inspect. Replace the shorted wire
and any wire showing signs of
damage.
3) If the heater or cable do not show a
short, replace the circuit breaker
0034 00-24
