12
JUDO SPEEDY-LongLife
Operation
5.
Operation
ATTENTION
(see chapter “Safety information and
dangers due to non-compliance”)
Always observe the chapter “Intended use”!
5.1
Commissioning
Before starting up (initial putting into service
or startup after maintenance work),
fill
the
backwash protective filter with water and
vent
!
–
To this end, after installation the filter is
filled with water by opening the upstream
shut-off valve.
–
The filter is now at the same pressure as
the water system.
–
The enclosed air must then be imme-
diately removed from the filter in order to
avoid damage to the installation caused
by pressure surges. The filter is vented
by means of backwashing (see chapter
“Discharging the backwashing water”).
–
After backwashing and venting the filter
is ready for use.
5.2
Functional description
Water flows through the built-in rotary flange
(
1
) into the backwash protective filter. A
coarse filter (JSY-LF
1½" – 2") prevents
large dirt particles from getting into the fine
backwash protective filter. These large dirt
particles cannot be removed by the back-
washing equipment. The water flows
through the fine filter from the outside
inwards. The filtered dirt is retained by the
fine filter screen. The adhering dirt is visible
through the transparent filter cover (
3
). The
filtered water then leaves the backwash
protective filter via the built-in rotary flange
(
1
).