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8 Servicing/Maintenance
53 of 104
mini-Compacta
2317.886/16-EN
3. Lift rotating assembly 01-44 out of the tank.
4. Remove O-ring 412.02.
mini-Compacta US100, UZS150
1. Separate pump/plate assembly 10-5 from the discharge line.
2. Undo hexagon socket head cap screws 914.06.
3. Lift pump/plate assembly 10-5 out of the tank.
8.3.4 Removing the rotating assembly
mini-Compacta US40
1. Undo the tie bolt (hexagon socket head cap screw) 914.03.
2. Remove volute casing 102.
3. Undo impeller screw 914.05.
4. Take off cutter 23-14.
5. Pull impeller 230 off shaft 210.
6. Remove support disc 55-2 and washers 551.
mini-Compacta US100, UZS150
1. Undo hexagon socket head cap screw 914.04.
2. Lift rotating assembly 01-44 out of plate 185.
3. Drain the oil from the oil reservoir. (
4. Remove screw plug 903.01 with joint ring 411.01.
5. Undo impeller nut 922. If required, use a socket wrench (WAF8) to hold the
hexagon end of shaft 210.
6. Take off cutter 23-14.
7. Prise off impeller 230 by inserting a screwdriver into the grooves in the impeller
shroud and casing cover 161, respectively.
8. Remove key 940.
9. Remove circlip 932.02 and support disc 550.02.
10. Carefully pull the rotating assembly of mechanical seal 433 off shaft 210.
8.3.5 Dismantling the motor section
mini-Compacta US40
1. Remove swing check valve 742.
2. Remove hexagon socket head cap screws 914.01.
3. Pull motor unit 80-1 off rotor 818 with bearing end shield 360.
4. Remove O-ring 412.01 and circlip 932.
5. Pull bearing end shield 360 with lip seals 421.01 and 421.02 off shaft 210.
6. Press shaft seal rings 421.01 and 421.02 (WASY FKM, pressurisable) out of
bearing end shield 360.
7. Pull off deep groove ball bearings 321.01 (6201-2RSR/C3) and 321.02 (6305-2RS1-
JC3).
mini-Compacta US100, UZS150
1. Remove hexagon socket head cap screw 914.01.
2. Press rotor 818 with motor unit 80-1 and bearing bracket 330 out of casing
cover 161.
3. Take O-ring 412.04 and the stationary assembly of mechanical seal 433 out of
casing cover 161.
4. Remove rotor 818 with bearing bracket 330 from motor unit 80-1.