Rattling Noise From The Lifting Station, But Water Is Evacuated; Odour From The Tank; Water From Shower Or Another Appliance Connected To The Lower Inlets Drains Off Slowly, And There Is Backflow From The Lifting Station - Grundfos SOLOLIFT2 CWC-3 Installation And Operating Instructions Manual

6.6 Rattling noise from the lifting station,
but water is evacuated
Cause
A foreign body is
hitting the impeller or
grinder.

6.7 Odour from the tank

Cause
The carbon filter is
contaminated.
6.8 Water from shower or another appliance
connected to the lower inlets drains off
slowly, and there is backflow from the
lifting station
Cause
The non-return flap in
the inlet is stuck, it
does not open or
close sufficiently.
The hydraulics or
grinder is blocked.
The start level has
changed.
The start level has
changed.
The inlet pipe
diameter is too small.
10
Remedy
• Remove the foreign
body.
Remedy
• Replace the carbon
filter.
Remedy
• Check the non-return
flap.
• Check and clean the
hydraulics and grinder.
• Check and clean the
pressure switch pipe.
• Check and clean the
float switch pipe.
• Use a pipe with a
larger diameter.