Husqvarna DC 900 Operator's Manual page 18

10. Do the same replacement procedure on the other 4
rows of primary filters.
11. Install the cover of the filter housing and the 6
locking knobs.
To adjust the gland seals of the rotating
valves
If there is a leakage of dust at the gland seals, it is
necessary to tighten the gland seals. There are gland
seals on each side of the 2 rotating valves.
1. Stop the product. Refer to
page 12 .
2. Make sure that the bushings (A) are vertical and not
at an angle.
A
C
3. Tighten the nuts (B) a half turn.
CAUTION:
too much. The gland seals can become
damaged.
4. Make sure that the distance (C) is the same on the
left and the right side.
5. Start the product and make sure that there is no
leakage of dust at the gland seals.
To replace the rotating valve seals
WARNING:
protection when you replace the rotating
valve seals. Refer to
equipment on page 6 .
1. Stop the product. Refer to
page 12 .
2. Make sure that the power supply is disconnected.
18
To stop the product on
B
Do not tighten the nuts
Use approved respiratory
Personal protective
To stop the product on
3. Remove the BigBag and remove the dust outlets.
4. Remove the 4 bolts (A), the clamp strip (B) and the
sealing blade (C) of the rotating valve seal.
C
B
A
5. Remove the 2 bolts on the drive motor plate.
2154 - 002 - 25.10.2023