TM 10-4610-310-14
0028 00
MALFUNCTION
TEST / INSPECTION
CORRECTIVE ACTION
The arrow on the body of the
Inspect solenoid valves (V2 A,B,C).
solenoid valve should be in the
Ensure that they are installed in
direction of the flow.
5. Not pulsing during fast flush
proper direction and are working
Notify unit maintenance.
properly.
for unit troubleshooting procedure
6. Solenoid valves are not
Inspect PLC
See (WP 0030 00)
functioning correctly
Inspect the backwash pump for
Prime backwash pump (WP 0009
loss of prime.
Inspect hoses and connections
Repair of replace any leaking
for good connections, kinks,
fittings. Remove blockage.
7. Backwash pressure too low
breaks, debris, trash
Troubleshoot backwash pump
See (WP 0026 00)
Inspect the 30-mesh screens in the
Clean the screens of any debris.
inlet camlock of the backwash
Replace damaged screens (WP
piping. (WP 0085 00)
Determine the problematic cycle as
in step 4 and trouble shoot
corresponding solenoid valve.
Inspect backwash operation. The
solenoid valves will be closed for 3
for backwash up and WP 0054 00.
seconds and opened for 7 seconds
WP 0056 00 for backwash down)
to pulse the cartridge.
for unit troubleshooting procedure
Notify unit maintenance.
8. Differential pressure increasing
rapidly
Perform manual backwash (WP
Check for dirty membranes
Perform maintenance clean (WP
Check for dirty membranes
problem persists.
Perform full chemical clean (WP
Check for unserviceable
Replace membrane cartridges (WP
membranes
Inspect hoses and connections
Repair of replace any leaking
for good connections, kinks,
fittings. Remove blockage.
breaks, debris, trash
Orient the valve so that the arrow
Inspect check valve (V8)
on the body of the check valve is in
Remove the check valve and shake
the direction of the flow.
it back and forth to ensure that the
Replace if unserviceable (WP 0085
ball is moving freely.
9. Filtrate tank over pressured
Check for air trapped in the tank
Ensure that the vacuum relief valve
If the filtrate tank inflates all the way
is clean. Replace if unserviceable.
before it is filled with water air is
trapped in the tank.
Replace the pressure relief valve
Unserviceable pressure relief
valve?
maintenance.
Inspect the 30-mesh screens on
Clean the screens of any debris.
10. Feed pressure too low
the inlet camlock of the UF feed
Replace damaged screens (WP
piping. (WP 0085 00)
0028 00-3
