HTC 80 iD, Manual

Page: 49 / 61

HTC 80 iD Service
1.1 41
4. Install a new sock filter. Check that the fastening in the top of the sock filter lies
along the mounting ring to guarantee that the sock filter ends up in the right
position and does not become twisted after assembly.
5. Make sure that the sock filter snaps into the lower plate's hole and seals properly,
see Figure 6-3, page 40 .
6.4 Service of the HEPA filters
Warning!
The dust that is sucked up is harmful if inhaled. Follow local regulations and
use breathing protection.
The HEPA filters must be changed once a year, but if the daily inspection shows that the
HEPA filters needs changing, the following points must be done after steps 1 - 5 in
Check HEPA filters, page
33 .
1. Discard the defective HEPA filters.
2. Install the new HEPA filters. Take care to install them centrally in the HEPA
filter holder. An arrow on the HEPA filters indicates the correct orientation for
installing the filter in the dust extractor so the flow will be in the right direction
through the filters. The arrow must point away from the upper cylinder section
on the suction system, because this is the dust extractor's flow direction.
3. Secure the HEPA filters with the HEPA filter holder and its quick fasteners.