EN/US/CA/A.mist A.mistT/UM-2239-1
17
Subject to alteration without prior notice.
12.3
Worn out filter cassettes
When the filter cassette is worn out it has to be taken care of in an environmental-friendly
way. The sheet metal casing and the aluminum separators can be recycled.
Clean filtermedia can be sent to disposal facilities, but when it contains oil and particles
from the process, local regulations for disposal or incineration need to be followed.
If the oil is washed from the cassette, it can usually be sent for landfill.
HANDLING THE FILTER CASSETTES
cont.
12
A
C
D
E
F
B
12.5
Not cleanable filter cassettes
Filter cassettes which include material for smoke filtration are not cleanable. This means
that A•mist
10S
,
A•mist
20S
and A•mist
20HPS
cassettes cannot be cleaned. Hepa filters cassettes
are not cleanable either.
12.4 To clean filter cassettes
(does not apply to
A•mist
10S
, A•mist
20S
and A•mist
20HPS
)
Filter cassette No. 1 (lowest) and No. 2 (centre) can be washed several times*). Wash with
water-based degreasing agent in a chamber washer (Figure C), max. permissible water tem
-
perature: 90°C / 194°F.
After washing, the filter must be left to dry until it no longer drips before it can be used again
(Figure D). The filter continues to dry in the filter unit.
The Absolute filter is not washable and must be replaced when the pressure drop exceeds
the ”service required” level.
If you do not have a chamber washer, you can place the filter cassette in a tub filled with
water mixed with a water-based degreasing agent for 4-8 hours. Then allow the
filter cassette to finish dripping before you flush it clean with a high-pressure washer.
However be careful not to damage the separators when you spray them under high pres
-
sure. The result of this cleaning method is doubtful and should therefore be tested from case
to case.
Check that the sealing strip is undamaged before you refit the filter cassette. The sealing
strip must face upward.
*
)
The useful life of the filter may vary after washing from comparable to a new filter to reduced, depending on
the type of impurities it is exposed to.
