KSB Delta Primo F, Инструкция по установке и эксплуатации

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8 Servicing/Maintenance
42 of 80
KSB Delta Primo
1983.811/02-EN
8.2.5 Replacing the non-return valve
DANGER
Voltage at the pressure booster system
Danger to life!
▷ Prior to opening the device, wait at least 10 minutes for any residual voltage to
dissipate.
1. De-energise the pump set and secure it against unintentional start-up. Comply
with the local regulations.
2. Close the shut-off valve of the pump.
3. Place a suitable container under the drain connection.
4. Open the drain connections. To do so, observe the pump's operating manual.
Fig. 9: Removing the screw
5. Remove the screw.
Fig. 10: Screwing the valve's body parts into each other
6. Use a suitable tool to screw the body parts of the non-return valve into each
other to shorten the length of the body.
Fig. 11: Removing the body
7. Remove the body of the non-return valve.