ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0033 00
TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
THIS SECTION COVERS:
Chemical System
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Operator
CHEMICAL SYSTEM MALFUNCTIONS
Table 11. Chemical System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
Chemical pump runs but will
Output dials not set properly.
Always prime pump with speed at 80% and
not prime.
stroke at 80%.
Four-function valve not set properly.
Black priming knob must be turned 1/4
turn to pull it outward.
Foot valve not in semi-vertical position on
Foot valve must be in vertical or semi-
the bottom of the chemical tank.
vertical position.
Suction or discharge fittings are over-
Loosen fittings slightly. If still not working,
tightened into pump head.
replace notify Unit Maintenance to replace
the suction or discharge valve assemblies.
Suction cartridge valve leaking
If spare pump is available, interchange with
or
inoperable pump (WP 0016). Notify Unit
pump diaphragm ruptured.
Maintenance to replace the suction valve
assembly or the pump diaphragm.
2
Chemical pump loses prime.
Chemical bucket level has dropped below
Refill container with solution and re-prime
the suction screen.
Foot valve not in semi-vertical position on
Foot valve must be in vertical or semi-
the bottom of the chemical tank.
vertical position.
Suction or discharge fittings are over-
Loosen fittings slightly. If still not working,
tightened into pump head.
replace notify Unit Maintenance to replace
the suction or discharge valve assemblies.
Suction cartridge valve leaking
If spare pump is available, interchange with
or
inoperable pump (WP 0016). Notify Unit
pump diaphragm ruptured.
Maintenance to replace the suction valve
assembly or the pump diaphragm.
3
Leakage at tubing.
Worn tubing ends.
Cut about one inch off tubing and
reconnect.
Loose or cracked coupling nut.
Notify Unity Maintenance to replace
suction, discharge, or four-function valve
assembly.
Worn valve O-ring.
Notify Unit Maintenance to replace suction,
discharge, or four-function valve assembly.
0033 00-25
