YAMIT E.L.I. AF800N Series, Service Maintenance Manual

Page: 23 / 40

23
A
Check solenoid operation by connecting the wires
directly to the battery
Solenoid clicks and
flushing cycle starts
Solenoid clicks and flushing
cycle does not start
Solenoid doesn't click
at all (not operating)
Check Inlet & Outlet line
pressure
Replace the solenoid
Pressure reading above
1 bar (15 psi)
Pressure reading below
1 bar (15 psi)
Faulty solenoid The filter does not comply with the
system operating requirements
Close the outlet valve and check that
differential pressure between inlet and
outlet of the filter is zero
Perform a flushing cycle manually by
operating the handle (turn clockwise
90

) located on the solenoid and open
the outlet valve
Differential
pressure nullified
Differential pressure
remains the same
The filter was badly
clogged
B
Replace the control card
AF800N