Disposing Of The Product - Grundfos CMB PM1 Supplement To Quick Manual

Fault
14. The pump runs
backwards when
switched off.
Self-priming pumps only:
15. The pump
performance is
unstable and the
pump is noisy.
16. When startup is
attempted, the
pump starts, but
delivers no
pressure or flow.
17. The pump runs, but
does not deliver
the rated flow.

9. Disposing of the product

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
10
Cause
a) Leakage in the inlet pipe.
b) The foot or non-return valve is
defective.
c) The foot valve is stuck in completely
or partly open position.
a) The differential pressure across the
pump is too low.
a) Liquid column above non-return
valve in outlet pipe prevents the
pump from self-priming.
b) The inlet pipe draws in air.
a) The internal valve did not close.
Remedy
Remove and repair the inlet pipe.
Remove and clean, repair or replace
the valve.
Remove and clean, repair or replace
the valve.
Close the tap gradually until the outlet
pressure is stable and the noise has
ceased.
Empty the outlet pipe. Make sure that
the non-return valve does not hold back
liquid in the outlet pipe. Repeat the
startup procedure.
Make sure that the inlet pipe is airtight
from pump to liquid level. Repeat the
startup procedure.
Close the tap gradually until the
pressure or flow suddenly increases.
Then open the tap gradually until the
required flow is reached.