Dismantling The Pump Section; Removing The Mechanical Seal And The Motor Section - KSB Amarex N S 32-160 Installation & Operating Manual

7 Servicing/Maintenance

7.4.3 Dismantling the pump section

Dismantle the pump section in accordance with the relevant general assembly
drawing.
1. Remove suction cover 162.
2. Undo and remove the M8 impeller fastening screw.
The impeller/shaft connection is a tapered fit.
3. For removing the impeller, an M10 jacking thread is provided at the impeller
hub.
Screw in the jack as shown in the drawing below and remove the impeller.
Fig. 21: Forcing screw
NOTE
The forcing screw is not included in the scope of supply. It can be ordered
separately from KSB.

7.4.4 Removing the mechanical seal and the motor section

NOTE
Special regulations apply to repair work on explosion-proof pump sets.
Modifications or alteration of the pump set may affect explosion protection and are
only permitted after consultation with the manufacturer.
NOTE
The motors of explosion-proof pump sets are supplied in "flameproof enclosure"
type of protection. Any work on the motor part which may affect explosion
protection, such as re-winding and machining repairs, must be inspected and
approved by an approved expert or performed by the motor manufacturers. No
modifications must be made to the internal configuration of the motor space.
Repair work at the flameproof joints must only be performed in accordance with
the manufacturer's instructions. Repair to the values in tables 1 and 2 of EN 60079-1
is not permitted.
When dismantling the motor part and the power cables make sure that the cores/
terminals are clearly marked for future reassembly.
ü The oil has been drained. (ð Section 7.2.2.1.4, Page 38)
1. Undo and remove screws 914.02 at bearing bracket 330.
2. Remove rotor unit 818 from bearing bracket 330.
3. Push mating ring 433.02 out of bearing bracket 330.
4. Remove circlip 932.02.
5. Take bearing bracket 330 off rotor 818.
6. Remove circlip 932.01.
7. Pull off rolling element bearing 321.02.
8. Remove baffle 17.5
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