7 Servicing/Maintenance
50 of 82
Amarex
2573.820/02-EN
DANGER
Insufficient preparation of work on the pump (set)
Risk of injury!
▷ Properly shut down the pump set.
▷ Close the shut-off elements in the suction line and discharge line.
▷ Drain the pump and release the pump pressure.
▷ Shut off any auxiliary connections.
▷ Allow the pump set to cool down to ambient temperature.
WARNING
Components with sharp edges
Risk of cutting or shearing injuries!
▷ Always use appropriate caution for installation and dismantling work.
▷ Wear work gloves.
7.4.2 Preparing the pump set
ü The notes and steps stated in (ðSection7.4.1,Page49) have been observed/
carried out.
1. De-energise the pump set and secure it against unintentional start-up.
2. Drain the lubricant.
3. Drain the leakage chamber and leave it open for the duration of the
disassembly.
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 impeller fastening screw M8.
The impeller/shaft connection is a tapered fit.
3. For dismantling of the impeller, an M10 jacking thread is provided at the
impeller hub.
Screw in the forcing screw as shown in the drawing below and remove the
impeller.
Fig.21: Forcing screw
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