Maintenance And Lubrication; Supervision Of Operation; Lubrication And Grease Change; Grease Change - KSB WKLn Installation & Operating Manual

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5. Maintenance and Lubrication

5.1 Supervision of operation

The pump must run quietly and evenly at all times.
Avoid dry-running of the pump.
Do not run the pump for a long period against a closed discharge valve.
The bearing temperature may exceed ambient temperature by up to 50°C, but must
not exceed 90°C (measured externally on the bearing housing).
The shut-off valves in the auxiliary lines must remain open while the pump is
running.
If the pump has a gland packing this should leak slightly during operation. The
gland nuts should only be lightly tightened.
If the pump has a mechanical seal this experiences only minor leakage or no visible
leakage (flashing) during operation. It is maintenance free.
Any standby pumps should be started up then shut down immediately, at least once
a week, to ensure they are in constant readiness for operation. Check the integrity
of the auxiliary connections.
The flexible coupling elements should be regularly checked and replaces as soon as
they show signs of wear.

5.2 Lubrication and Grease Change

5.2.1 Lubrication
The anti-friction bearings are grease-lubricated.

5.2.2 Grease Change

The initial fill of grease-lubricated anti-friction bearings should be changed after
3000 operating hours or 2 years, whichever is the sooner.
Grade:
Use high-quality lithium soap grease, resin and acid-free not liable to crumble, with
good rust preventative properties. It must have a penetration number between 2
and 3, corresponding to a worked penetration between 220 and 295 mm/10. Its drop
point must be above 175°C.
WARNING
Unintentional starting of the pump set
Risk of injury by moving components and shock currents!
▷ Ensure that the pump set cannot be started unintentionally.
▷ Always make sure the electrical connections are disconnected before carrying
out work on the pump set.
WARNING
Fluids handled, consumables and supplies which are hot and/or pose a health
hazard
Risk of injury!
▷ Observe all relevant laws.
▷ When draining the fluid take appropriate measures to protect persons and the
environment.
▷ Decontaminate pumps which handle fluids posing a health hazard.
WKLn