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en
6
. . Maintenance
6.1
Introduction
6.2
Replacing the filter
en-52
This chapter comprises those maintenance activities that the
user himself can perform. Maintenance activities and repairs
that must be performed by an installer are described in chap-
ter
7
Service.
See also:
7
"Service" on page 54
The unit is fitted with two filters:
•
Fresh air filter: F7 1.
•
Extract air filter: M5 2.
The filters must be replaced regularly. A dirty filter can cause
inefficient operation and a high noise level.
Remove the filter:
Warning:
w
Set the isolation switch to 0.
1. Open the inspection hatch for the relevant filter.
2. Remove the filter 4.
3. Replace the filter. New filters are available from Biddle.
4. Return the filter to its place.
Note:
n
Position the correct filter back into the correct
place.
Note:
n
Position the filter in the correct direction.
The air direction is shown on the filter and on the
unit.
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