TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check filter seals and springs (para. 2-24b).
Replace missing seals or springs.
Step 3.
Check wing nut.
Tighten.
Step 4.
Change cartridge filers.
Step 5.
Notify unit maintenance.
5. Cartridge filter elements plug faster than normal.
Step 1.
Refer to media filter troubleshooting.
6. Media filter sand in cartridge filter housing.
NOTE
A small buildup over an extended time is normal as small pieces of media manage to slip
through the media filter headers during backwash. If there is a larger or sudden amount of
sand in the cartridge filter, notify unit maintenance.
7. FEED PRESSURE LOW alarm light stays on.
Step 1.
Check SYSTEM RESET pushbutton.
Push SYSTEM RESET pushbutton.
Step 2.
Troubleshoot raw water pump, malfunction 14.
Step 3.
Check cartridge inlet/outlet pressure gage (red needle).
Pressure must be greater than 5 to 7 psig (34 to 48 kPa). If not, check the other warning lights to find
where the pressure is blocked. Troubleshoot the device causing the high pressure drop.
Step 4.
Notify unit maintenance.
8. Cartridge filter plugged light comes on at less than 12 psi (83 kPa) differential or is not on at 18 psi (124 kPa) differential
(system normal only).
Step 1.
Check manual valve position.
Position valves correctly.
Step 2.
Check auto valve position.
Refer to auto valve troubleshooting if valves are not positioned correctly.
Step 3.
Notify unit maintenance.
9. Feed pressure low alarm is not on at 3 psig (21 kPa) or comes on at greater than 9 psig (62 kPa).
Step 1.
Check manual valve position.
Position valves correctly.
Step 2.
Check auto valve position.
Refer to auto valve troubleshooting if valves are not positioned properly.
Step 3.
Notify unit maintenance.
CLEAN/FLUSH TANK.
1. Clean/flush tank assembly leaks.
Step 1.
Notify unit maintenance.
2. CLEAN/FLUSH TANK LOW LEVEL light stays on when tank is full.
Step 1.
Check SYSTEM RESET pushbutton.
Push in.
Step 2.
Notify unit maintenance.
Change 12 3-13
