9 Start up
WARNING!
Danger of electric shock
A mains voltage may exist inside the pump
housing.
– If the pump housing has been damaged, you
must disconnect it from the mains immediately.
It may only be returned to service after an
authorised repair.
WARNING!
Dangerous reactions are possible due to contact of
feed chemical with water
The feed chemical can mix and react in the liquid
end with water remaining after testing in the fac‐
tory.
– Read the safety data sheet on the feed chem‐
ical.
– Blast the liquid end with compressed air.
– Flush the liquid end with a suitable medium
through the suction connector.
–
Before setting the stroke length, release the
lock.
–
Only adjust the stroke length when the pump is
running.
Completely reliable metering cannot be expected
once the pump has come to a standstill,
which explains why the metering has to be
checked regularly.
1. Check that the pressure relief valves are working properly.
2. Check that the pump connectors and connections are not
leaking and are connected correctly.
Only with feed chemicals that may not come into contact with
water:
1. Place the pump on its head.
2. Allow water to flow out of the liquid end.
3. Flush with a suitable medium from above through the suction
connector.
... with liquid end WITHOUT bleed valve:
Pre-commissioning
“Draining” the liquid end
Filling the liquid end
Start up
31
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