5.4.3. Cleaning filter elements
•
By compressed air
(wear goggles)
For the purpose, the air gun should be fit-
ted with a nozzle extension which is bent
90? at the discharge end and which is
long enough to reach down inside to the
bottom of the element.
Moving the air gun up and down, blow
out the element from the inside (maxi-
mum 500kPa - 5 bar) until no more dust
comes out of the filter pleats.
•
By washing
Before washing, the element should be
precleaned by means of compressed air,
as described above.
Th
en allow the element to soak inlukewarm
washing solvent fo
r10 minutes, and then
move it to and for in the solvent for about
5 minutes.
Rinse thoroughly in clean water, shake
o
ut and allow drying at r
oom temperature.
The cartridge must be dry before it is
reinstalled. Never use steam sprayers,
petrol (gasoline), alkalis or hot liquids etc.
to clean the filter elements.
•
Knocking out dirt by hand
In emergencies, when no compressed air or cleaning agent is available, it is possible to clean
the filter cartridge provisionally by hitting the end disk of the cartridge with the ball of one’s
thumb.
Under no circumstances should the element be hit with a hard object or knocked against a hard
surface to loosen dirt deposits.
•
Checking the filter cartridge
Before reinstalling the cartridge, it must
be checked for damage e.g. to the paper
pleats and rubber gaskets, or for bulges
and dents etc. in the metal jacket.
Cracks and holes in the paper pleating
can be established by inspecting the car-
tridge with a flashlight.
Damaged cartridges should not be
reused under any circumstances. In
cases of doubt, discard the cartridge and
install a new one.
- 39 -
To Next Page
Loading...
Need help?
General
