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. 24: 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 motor section
7.4.4.1 Removing the mechanical seal and 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 section 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 section and the power cables make sure that the cores/
terminals are clearly marked for future reassembly.
1. Push spring-loaded ring 433.02 along the shaft.
2. Undo and remove screws 914.02.
3. Remove intermediate casing 113.
4. Push seat ring 433.02 out of intermediate casing 113.
5. Remove circlip 932.03.
6. Remove spring-loaded ring 433.01.
7. Pull off seat ring holder 476.
8. Take the seat ring out of seat ring holder 476.
9. Take O-ring 412.02 out of seat ring holder 476.
10. Take circlip 932.04 out of bearing bracket housing 355.
7 Servicing/Maintenance
Amarex® N
43 of 66
Goodnal STP ST041 Biological Treatment (KSB WAS PUMP 1 & 2 PU-0530-010 OM Instructions) Vendor Manual
Q-Pulse Id VM381
Active 29/10/2013
Page 45 of 76
