Trouble-Shooting Guide; Fcd-Dp_Mi-R4.Doc - Nobel FCD 05 Instruction Manual

11.

TROUBLE-SHOOTING GUIDE

PROBLEM
• The electronic
programmer does not
switch ON
• The regeneration does not
run
• Regeneration is
electrically started but it
does not run hydraulically
• There is a leakage of
water to drain during
service
• The unit does not feed
water
• There is a leakage of
filtering media to the drain
or to the outlet line
Only for DP and DP-DUAL arrangement
• The values of pressure
shown on the display of
the programmer are by far
different than the ones
gauged by manometers
* Normally, a difference of approx 3 % between the values gauged by the two different
measurement systems is acceptable.

s.r.l.Milano - ITALY
INSTRUCTIONS MANUAL AUTOMATIC FILTERS
CAUSE
• electrical power is
disconnected
• the programmer is defected
• electrical power is
disconnected
• the programmer is not correctly
adjusted
• the programmer is defected
• there is not supplying of pilot
fluid (air or water)
• one or more solenoid valves
are defected
• one among (or both)
membrane valves no. 1 and 5
does not close properly.
• the membrane valve no. 2 does
not open
• one nozzle of distribution
system is damaged or broken
• the manometers are not quite
calibrated
• the pressure transducers are
not quite calibrated i sensori di
pressione sono starati
Page 23 of 23
FCD-FACD-FFD /DT /DP /DT-DUAL /DP-DUAL
HOW TO SOLVE
• connect electrical power
• replace the programmer
• connect electrical power
• adjust correctly the
programmer
• replace the programmer
• connect properly the supplying
of pilot water or compressed air
• replace the defected solenoid
valves
• check the proper working of
the pilot solenoid valves
• check and clean the seat of
the plate of the membrane
valve
• check the proper working of
the pilot solenoid valve
• replace the nozzle
• check the real pressure values
by using a standard instrument;
then replace the instrument
(manometer or transducer)
which gauge the uncorrect
value *
fcd-dp_mi-r4.doc –
r.4