8 Servicing/Maintenance
56 of 104
mini-Compacta
2317.886/16-EN
8.4.3 Fitting the bearing assembly/shaft seal
mini-Compacta US40
NOTE
We recommend fitting new bearings/shaft seals whenever the motor section has
been dismantled. At the impeller end, use a pressurisable shaft seal ring.
1. Press lip seals 421.01 and 421.02 into bearing end shield 360, making sure the
sealing lips point towards the impeller. When pressing in the motor-end shaft
seal ring 421.01, observe the installation depth of 10 mm (see Fig.). Make sure
that lip seal 421.02 (WASY FKM, pressurisable) is fitted at the impeller end.
99-15
1
0
421.01
421.02
914.05
Fig. 29:
Fitting the shaft seal
2. Fill the grease reservoir with multi-purpose grease 99-15 (DIN 51 825).
3. Slide deep groove ball bearings 321.01 (6201-2RSR/C3) and 321.02 (6305-2RS1-
4. Guide shaft 210 through bearing end shield 360. Fasten it above the bearing
seat with circlip 932.
5. Insert O-ring 412.01.
6. Fit motor unit 80-1 on rotor 818 with bearing end shield 360. Fasten it with
hexagon socket head cap screws 914.01.
mini-Compacta US100, UZS150 & Ausführung C
NOTE
We recommend fitting new bearings / shaft seals whenever the motor section has
been dismantled.
Observe the following to ensure trouble-free operation of the mechanical seal:
▪
The protective wrapping of the contact faces shall only be removed immediately
before assembly takes place.
▪
Extreme care and cleanliness during installation are of overriding importance for
trouble-free operation of the mechanical seal.
▪
The shaft surface in the mechanical seal area must be absolutely clean and
smooth.
1. Press in lip seal 421.01, making sure the sealing lip points towards the impeller.
2. Fit mechanical seal 433.
3. After reassembly fill the oil reservoir with oil again. (
8.4.4 Fitting the rotating assembly
mini-Compacta US40
1. Fit the impeller. Check the impeller clearance.
