UFC-420/440 water Filtration system
15
P/N 1010908 Rev. A 03/12
A.J. Antunes & Co.
trOUblesHOOtInG
problem
possible cause
corrective action
Unit does not have power.
The power cord is not correctly
plugged in.
Plug power cord in correctly.
The control Display is blank.
The power cord is not correctly
plugged in.
Plug power cord in correctly.
control Board is inoperable.
Contact your maintenance person or
Authorized Service agency.
Transformer is inoperable.
No water comes out of the fil-
ter system
Inlet Valve closed
open the Inlet Valve
Inlet Strainer is plugged
Clean/replace Inlet Strainer
End of the capillaries plugged
Clean/replace Filter Cartridge
Low water flow/pressure out
of system
See above.
See above.
The system may be in a flush cycle.
Wait for the flush cycle to end.
Flushing program not set correctly
for water conditions.
Decrease the flush interval and increase
the flush duration (refer to the operation
section of this manual).
Drain Valve is stuck open.
Replace/rebuild the Drain Valve.
The inlet water pressure is too low.
Boost the inlet water pressure/replace
pipes.
Water tastes bad.
Storage/shipping solution not com-
pletely flushed out of system.
Flush system for a longer period of time.
Biological growth in pipes.
Sanitize plumbing.
Water conditions changed.
Consider installing taste and odor filtration.
Broken capillary in Filter cartridge.
Replace Filter Cartridge.
Flush runs continuously.
Drain Valve stuck open.
Replace/rebuild the Drain Valve.
Controller sending continuous signal
to valve.
Replace the controller.
Flush runs too long.
Program duration set too long.
Re-program the unit to flush for a shorter
duration of time.
Flush occurs at time of high
water usage.
The Flush Interval is set to interfere
with water use.
Change Flush Interval/reprogram time.
Unplug unit and plug in at a time of lower
water usage.
Water splashes at drain dur-
ing flush.
Drain line not positioned properly.
Reposition the end of the drain line.
Water leaks at the ends of the
Filter Cartridge after changing
cartridges.
Cartridge end connections are not
tight enough.
Tighten with strap wrench if necessary.
o-rings not lubricated.
Lubricate o-rings with food-grade lubricant.
o-rings are split, cut, or twisted
Replace o-rings.
Water leaks from Permeate
port.
Permeate port is not tight enough
Tighten, with strap wrench if necessary.
o-ring not lubricated.
Lubricate o-ring with food-grade lubricant.
o-ring split, cut, or twisted.
Replace o-ring.
Water leaks from system fit-
ting or connection.
Fitting broken or loose.
Retighten or replace the fitting.
Not enough pipe thread sealant
used.
Redo the fitting with the proper amount of
sealant.
