8 Servicing/Maintenance
57 of 104
mini-Compacta
2317.886/16-EN
NOTE
Measure dimension "B" (see Fig. "Checking the impeller clearance").
The impeller clearance "C" results from the difference "A" (= 30 mm) - "B".
An impeller clearance of 0.25 to 0.40 mm is required.
If necessary, adjust the clearance by adding adjusting washers 551 (set of adjusting
washers) between impeller 230 and the shoulder of shaft 210.
210
551
230
A
=
3
0
B
C
102
Fig. 30:
Checking the impeller clearance
2. Fit cutter 23-14. Fasten it with impeller screw 914.05. Secure impeller screw
914.05 with a suitable metal adhesive (e.g. Loctite).
3. Fit volute casing 102. Fasten it with tie bolt (hexagon socket head cap screw)
914.03.
NOTE
Cutter and impeller must be easy to rotate by hand. Rubbing contact is not
permissible. Otherwise check the impeller clearance and the tightening torques of
the tie bolts.
4. Fit O-ring 412.02 on bearing end shield 360.
5. Lift rotating assembly 01-44 into the tank. Fasten it with hexagon socket head
cap screw 914.02.
mini-Compacta US100, UZS150
1. Check the impeller clearance.
To do so, loosen both hexagon socket head cap screws 914.03 by approx. three
turns.
NOTE
Measure dimension "B" (see Fig. "Checking the impeller clearance").
The impeller clearance "C" results from the difference "A" (= 34.5 mm) - "B".
An impeller clearance of 0.25 to 0.40 mm is required.
If necessary, adjust the clearance by adding adjusting washers 550 (set of adjusting
washers) between impeller 230 and the shoulder of shaft 210.
