HTC 80 iD - Page 47

HTC 80 iD Service
1.1 39
1. Take hold of the sock filter cassette and turn it slightly anticlockwise, see
Figure6-1, page39.
2. Pull the whole cassette straight out, see Figure6-1, page39.
Figure 6-1. Change the sock filter cassette
3. Inspect the gaskets on the lower and upper cylinder section. In the case of
damage, replace with new gaskets.
4. Clean the upper cylinder section, if it has leaked dust.
5. Check the sock filters according to Check the sock filters, page32 and replace
the sock filters that are damaged or used up according to Servicing the sock
filter, page40
6. Fix the new sock filter cassette in the bayonet fitting.
7. Check for damage to the HEPA filters which may have occurred if dust has
leaked out of the sock filter cassette. For inspection of the HEPA filters, see
section Check HEPA filters, page33.
8. Tip back the upper cylinder section and lock with the quick fasteners.