P_MA_0032_SW
Fig. 14: Stroke length adjustment wheel with scale
10 mm =
100% stroke length (10
revolutions)
6.3 mm =
63% stroke length (6 rev‐
olutions and 3 long scale
markings)
Stroke length adjustment wheel markings:
1 revolution =
10%
1 long scale marking =
1%
1 short scale marking =
0.5%
Check whether the earthing lines in the pump's electrical units are
correctly connected and connected to a clean earth wire - see
earthing diagrams in the appendix.
Check whether the potential equalisation lines are sitting correctly
on the pump and connected to a clean potential equalisation point.
8.1 Bleeding the liquid end
Requirements:
Depressurise the suction and discharge lines!
With dangerous feed chemicals, take suitable protective measures
as per the material safety data sheet!
Read the safety information in this chapter with flammable feed
chemicals!
1.
Loosen the discharge line.
2.
Install a piece of translucent hose.
3.
Run the pump slowly until the feed chemical appears in the
section of hose.
4.
Remove the piece of hose.
5.
Assemble the discharge line.
Earthing lines
Potential equalisation lines (manda‐
tory with ATEX)
When bleeding the liquid end or pri‐
ming against pressure:
Start up and operation
49
