8 Servicing/Maintenance
34 of 48
KSB Delta Basic
1983.835/01-EN
14. Fit and tighten the screw.
15. Close the drain plugs of the pump. Properly dispose of the fluid collected.
16. Slowly open the shut-off valve and check for any leakage.
Table13: Spare parts for servicing non-return valves, per pump
Material number Description Non-return valve O-rings O-ring lubricant
(non-water soluble)
71630405 ER non-return valve
DN32
Watts Industries
IN 032 DN 32
1xEriks 12711456 Molykote® G-5511
3)
2xEriks 12711457
71630410 ER non-return valve
DN50
Watts Industries
IN 050 DN 50
1xEriks 12192264
2xEriks 12711459
8.2.5 Mounting the manifold in a mirrored position
DANGER
Voltage at the pressure booster system
Danger to life!
▷ Prior to opening the device, wait at least 10minutes 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 valves in the discharge line and suction line of the pressure
booster system.
3. Place a suitable container under the drain connections.
4. Open the drain connections. To do so, observe the pump's operating manual.
Fig.15: Removing the bolts
5. Remove the tie bolts between the two oval flanges and the pumps.
3) Sealant for taps