DISMANTLING THE PUMP SET
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby
– Denmark
Tlf. nr.: +45 96 32 81 11
Fax +45 98 17 54 99
87
E-mail: [email protected] www.desmi.com
9.1.5. Inspection
When the pump has been dismantled, check the following parts for wear and damage:
- Sealing ring/impeller: Max. clearance 0.4-0.5 mm measured in radius.
- Shaft seal/rear cover: Check the seat for flatness and cracks.
Check the rubber parts for elasticity.
- Bearings: Replace in case of wear and noise.
9.1.6. Dismantling coupling (02 combination) / shaft (12 combination)
It is not necessary to remove the coupling in the 02 combination or the shaft in the 12 combination
during normal maintenance. However, in the 12 combination the shaft must be removed when the
lower bearing in the electric motor is replaced.
02 combination:
1. Dismantle the coupling by removing the pointed
screw (73) and pull off the coupling. The
coupling might be heated to help dismantling.
NOTE: If the coupling is removed on the assembled pump, take care that the bearing is not
damaged by pulling too hard on the coupling. If the coupling is removed after dismantling the
pump, fix the shaft at the thread at the opposite shaft end, while the coupling is pulled off.
12 combination :
1. Remove pointed screws (73). Pull off the shaft.
The coupling might be heated to facilitate
dismantling.
Summary of Contents for NSL 100-215
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