ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
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TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
THIS SECTION COVERS:
Air System
INITIAL SETUP:
TWPS Operating
Maintenance Level
Operator
AIR SYSTEM MALFUNCTIONS
Table 9. General Air System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
System pressure gauge PI-
High-pressure air (PI-901) set too high.
If PI-901 reads over 110 psig, adjust PRV-
901 reading less than 975
Excessive air consumption.
901 to reduce pressure to about 100 psig
psig and compressor
continues to run without
increasing the pressure to the
System Air leakage
Shut down to standby. Stop air compressor
shut-off pressure or
and listen for leaks. Note: Leakage at
compressor fails to reach
Filtrate Flow Control Valve V-202 Positioner
shut-off pressure between
and at IP Transducer FY-102 on the Feed
backwashes.
Flow Control Panel is normal.
Oil/Water Coalescer CO1 Automatic Drain
Continue operation using manual Coalescer
Valve XV-911 leaking.
C-O1 Drain Shutoff Valve V-902. Open and
close at 15-minute intervals. Notify Unit
Maintenance to replace XV-911 solenoid
valve during next routine maintenance
cycle.
Compressor Intermediate Filter Automatic
Continue operation using manual
Drain Valve XV-910 leaking.
Compressor Intermediate Filter Drain Valve
V-901. Open and close at 15-minute
intervals. Notify Unit Maintenance to
replace XV-910 solenoid valve during next
routine maintenance cycle.
HP Air Vent Valve V-904 (on Air
Ensure HP Air Vent Valve V-904 is
Purification Filter AF-2) leaking.
completely closed. Notify Unit Maintenance
to replace HP Air Vent Valve V-904 if still
leaking.
Relief valve RV-901 (on Coalescer CO-1)
Relief valve is factory set. Notify Unit
leaking
Maintenance to replace relief valve if found
to be leaking.
Relief valve RV-902 (in Air System
Manually vent RV-902 and release to see if
Section 1) leaking.
it resets and seals. If this doesn't work,
check PRV-901 adjustment (WP 0042). If
this still doesn't correct the problem, notify
Unit Maintenance to replace RV-902.
LP Air Vent Valve V-910 (in Air System
Ensure LP vent valve is completely closed.
Section 6) leaking.
Notify Unit Maintenance to replace LP Air
Vent Valve V-910 if closed and leaking.
Leaking air tubing or connections
Check tubing for leaks at connections.
Push tubes in to re-establish connection. If
unable to repair leak, bleed the entire air
system (WP 0042) then replace leaking
tubing and fittings (WP 0045).
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