JUDO FIMAT
15
Operation
With respect to JFXL-TP, the automatic
backwashing procedure has been set for
one week and 4.4 psi (30 kPa) by the
factory.
The selector shaft of the differential pres-
sure switch is set at the adjusting screw (see
chapter “Differential pressure control”).
Due to the triggering of the backwashing by
means of the differential pressure switch the
time interval for backwashing is set back.
5.6
Backwashing
The backwash protective filter must be
backwashed (= cleaned) at the specified
cycles in order to remove the filtered dirt
from the fine filter screen.
During the backwashing process three
suction pipes rotate around the screen. At
the same time a flushing valve on the under-
side of the backwash protective filter station
opens so that the backwashing water can
flow out. The treated water flows from the
inside outwards through the screen into the
suction pipe, taking the adhering particles
with it.
The fine filter screen is cleaned. At the same
time the inside of the transparent filter cover
is cleaned together with the wiper lips of the
suction pipe.
After approx. 2 minutes the flushing valve
closes again and the backwashing process
is completed.
This backwashing process can be repeated
if necessary.
5.6.1 Backwashing interval
ATTENTION
(see chapter “Safety information and
dangers due to non-compliance”)
If the interval until the next backwashing is
longer than six months, the particles on the
filter screen can stick or a large filter pres-
sure resistance can result.
Unauthorized persons must not operate the
filter! Persons who operate the filter must
observe the operating instructions. Failure
to observe these instructions can result in
damage to property and personal injuries.
The smaller the mesh size of the screen
insert the more frequently backwashing has
to be carried out!
Experience shows that increased dirt is
deposited during the initial running period. If
so, the unit has to be flushed more often
than usual.
Failure to flush in good time can cause
damage to the screen. Larger quantities of
filtered particles can deform the screen and
as an extreme incident cause the tearing of
the sieve. As a result a filter function is not
any longer ensured. In addition, larger quan-
tities of dirt can cause mechanical impair-
ment concerning the backwashing function.
All sizes of backwash protective filter
are backwashed with treated water.
The supply of treated water to the
backwash protective filter station is
maintained throughout the back-
washing process. Dirty water cannot
get into the clean water side during
backwashing.
The degree of pollution as well as
the cleaning off operation can be
watched from outside.
Summary of Contents for FIMAT JFXL-M 1 1/2
Page 3: ...JUDO FIMAT 3 ...
