Grundfos SEG AutoAdapt Installation And Operating Instructions Manual page 17

Dispose of used oil in
accordance with local
regulations.
Cleaning the sensors
To avoid damaging the
sensors, do not use
other cleaning aids than
those mentioned in
these instructions.
Checking the functionality of the dry-running
sensors
1. Cover one dry-running sensor with a wet cloth.
2. Let the pump run and pump down to the
dry-running level.
– The pump must stop at the dry-running level.
3. Repeat this check with the other sensor.
Cleaning intervals for explosion-proof pumps
Cleaning intervals of the sensors in
explosion-proof pumps are mandatory in
order to ensure that the pump is working
correctly.
After cleaning, both dry-running sensors
must be checked individually for proper
functioning.
If the dry-running sensors are not
functioning properly, there is a risk of
dry-running of the hydraulic part of the
pump, which can provoke ignition.
The following table lists the required cleaning
intervals for sensors in explosion-proof pumps.
Wastewater
Wastewater
containing dry
containing
solid matter or
grease
fibres
3 months 6 months
Replacing the grinder system
Wastewater
without
grease, dry
solid matter or
fibres
6 months
CAUTION
Sharp element
Minor or moderate
personal injury
- Do not touch the sharp
edges of the impeller,
grinder head, and
grinder ring without
wearing gloves.
During service the
painted surface may be
damaged. Remember to
restore the painted
surface by applying new
paint.
Make sure that the
grinder ring does not get
stuck against the grinder
head.
17