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)
THIS SECTION COVERS:
Air System
INITIAL SETUP:
TWPS Operating
Maintenance Level
Unit
AIR SYSTEM MALFUNCTIONS
Table 9. General Air System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
System pressure gauge PI-
High-pressure air (PI-902) set too high.
If PI-902 reads over 110 psig, adjust PRV-
902 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 C-O1 automatic drain
Continue operation using manual Coalescer
solenoid valve XV-911 leaking.
C-O1 Drain Shutoff Valve V-902. Open and
close at 15-minute intervals. Replace XV-
911 solenoid valve during next routine
maintenance cycle (WP 0054).
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. 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. Replace HP Air Vent
Valve V-904 if still leaking (WP 0054).
Relief valve RV-901 (on Coalescer CO-1)
Relief valve is factory set. Replace relief
leaking
valve if found to be leaking (WP 0054).
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,
replace RV-902 (WP 0054).
LP Air Vent Valve V-910 (in Air System
Ensure LP Air Vent Valve V-910 is
Section 6) leaking.
completely closed. Replace LP Air Vent
Valve V-910 if closed and leaking (WP
LP Air Vent Valve V-915 (in Air System
Ensure LP Air Vent Valve V-915 is
Section 3) leaking.
completely closed. Replace valve if closed
and still leaking.
0034 00-30
