7 Servicing/Maintenance
51 of 82
Amarex
2573.820/02-EN
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
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.
ü The oil has been drained. (ðSection7.2.2.1.4,Page47)
1. Slide primary ring 433.02 along the shaft.
2. Undo and remove screws 914.74.
3. Take off discharge cover 163.
4. Remove mating ring 433.02 from discharge cover 163.
5. Remove circlip 932.03.
6. Remove primary ring 433.01.
7. Remove circlip 932.08.
8. Remove the assembly consisting of bearing housing 350 and rotor 818.
9. Remove circlip 932.04.
10. Pull bearing housing 350 off the rolling element bearing.
11. Remove mating ring 433.01 from bearing housing 350.
12. Remove circlip 932.02.
13. Remove rolling element bearing 320 (reinforced version) or 321.02 (standard
version).
14. Pull off rolling element bearing 321.01.
7.5 Reassembling the pump set
7.5.1 General information/Safety regulations
WARNING
Improper lifting/moving of heavy assemblies or components
Personal injury and damage to property!
▷ Use suitable transport devices, lifting equipment and lifting tackle to move
heavy assemblies or components.
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