Maintenance
Maintenance applies mainly to the filter element.
Check the filter regularly and replace it, if neces-
sary.
The service life of a filter depends mainly on how
polluted the air is. Check the filter in intervals that
are short enough such that you can anticipate any
defects or problems before they actually occur.
Replace the filter immediately if any of the following
is true:
The defined final differential pressure has been
reached.
Hygiene problems (micro-organisms, fungal
spores, odours, etc.)
Filter defects (particle count has been
exceeded)
The maximum filter usage time has been
reached (8 years, to VDI 3803, part 4).
You may replace a filter even before the defined
final differential pressure has been reached if it is
more economic.
Removing the diffuser face
Some maintenance jobs, such as sealing integrity
testing, leakage testing, filter changes or cleaning,
require you to remove the diffuser face.
Fig. 6: Removing the diffuser face
1.
Loosen the diffuser face (Fig. 6/1) from the
magnets (Fig. 6/2) and swivel downwards.
Press the diffuser face upwards slightly and
lift away from the bolts (Fig. 6/3).
2.
Place the diffuser face on a protective sur-
face, e. g. on cardboard.
Maintenance
TFP Pharmaceutical clean room terminal filters
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