AUTOMATIC FILTERS INSTRUCTIONS MANUAL
FC/D - FAC/D
s.r.l.Milano - ITALY
Page 9 of 14
p11.02-v34.f fcd_mi-r1.doc
4.5. Hydraulic connections
In order to avoid shut-off during maintenance operations, an emergency by-pass line
should be provided
•
Complete the line from inlet fittings to the raw water line.
•
Complete the line from outlet fittings (valve V2) to the treated water line.
•
Connect the drain valves (V1 and V5) to a floor drain. The gate valve mounted downstream
of the valve V5 will be used to adjust the backwash flow rate.
A common flexible pipe made in plastic or rubber can be used for the drain line; its diameter
must be of at least one size larger of the one mentioned on “CHARACTERISTICS FOR
EACH MODEL” table.
It is suggested the drain line could be inspected in order to check quantity and quality of
drain water, as well as any leakage of media filter from the unit.
•
Connect the inlet air fitting, placed on the base manifold of the solenoyd valves, to a
compressed air-mains, complete with pressure reducer, dehumidifier filter and shut-off valve.
The air pressure must be kept at value equal or higher of the pressure of water to be treated,
with max value of 8.0 bar.
Whether water is used to pilot the valves, the inlet fitting of the base manifold of the solenoyd
valves must be connected to the pilot water fitting (¼"), pre-arranged on the inlet manifold of
the column; run to the drain a pipe from the drain fitting (¼") of the base manifold of the
solenoyd valves.
•
Complete the line between the outlet fitting of each solenoyd valve to the correspondent
membrane valve:
SOLENOYD VALVE MEMBRANE VALVES
EV no. TYPE no. TYPE
1 NC V1 NC
2 NC V2 NA
3 NC V3-V4-V5 NC-NA-NC
All the solenoyd valves can be hand-driven by the lever placed at the base of each of them; the
turning of the lever simulate the action of the coil. Then, for valves NC type, the valve is closed
when the lever is on parallel to the base; it is opened when the lever is on perpendicular to the
base itself.
4.6. Electrical wiring connections
•
Connect the power cable of the
programmer to a power socket
check that the available power is
correct as listed in technical
characteristics (see § 3.2 page 5).
•
The relais R, available upon request,
allows to have a free voltage contact
for remote segnalation of running
regeneration; the wiring connection
must be done directly on the clamps
of NO contact on the relais itself.
