Maintenance and Care 7
TW9 83
7.9.5.4. Cartridge replacement
Main cartridge
• Release the wire tighteners (45/1) and remove
the bottom of the housing (45/4).
• Withdraw the main cartridge (45/2) by twisting
slightly to and fro.
• Check whether the safety cartridge (45/3) must
be replaced.
Remove the safety cartridge only in
the case of necessary maintenance
work. Only open the seal (45/5) of
the safety cartridge for the purpose
of replacement.
• Note down the date of maintenance in the
appropriate sections of the safety cartridge
(45/3).
• Insert the new or cleaned main cartridge
carefully into the filter housing starting with the
open side and check that it is correctly
positioned.
• Fit the lower part of the housing. (Pay attention
to the position of the dust extraction valve).
• Place the wire fasteners in the groove of the
flange on the filter housing and tighten.
Safety cartridge
• Remove the main cartridge.
Do not clean the safety cartridge and,
once it has been removed, do not
use it again.
• Using a suitable tool (e.g. screwdriver), pierce
the seal (45/5) of the safety cartridge (45/3)
from the inside, then lift up the two clips (45/6).
• Grasp the safety cartridge (45/3) by the two
clips (45/6), withdraw by moving slightly to and
fro, and dispose of it.
• Insert a new safety cartridge and check that it
is correctly positioned.
• Re-install the main cartridge.
3
2
1
4
5
6
HR32-053
3.
2.
1.
Fig. 45 Replacing air filter cartridge
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