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English
5 Commissioning/operation
WARNING: Depending on the pump or system operat-
ing conditions (fluid temperature), the entire pump can
become very hot. Touching the pump can cause burns!
Commissioning by qualified personnel only!
5.1 Operation
The pump is operated using the operating knob.
Turn
Selection of the control mode and setting of the delivery
head or speed stage.
5.2 Filling and bleeding
• Properly fill the system.
• The pump rotor space bleeds automatically after a short
time in operation. This may cause noises. If necessary,
switch off and on repeatedly to accelerate the venting.
Dry running for short periods will not harm the pump.
5.3 Adjusting the pump
By turning the knob, the control mode symbol is selected
and the desired delivery head or speed stage is set.
Selection of the control mode
Variable differential pressure (
∆
p-v):
also see Fig. 2a
The pump for the control mode
∆
p-v is set on the left of the
middle position.
3 speed stages:
also see Fig. 2b
The pump is set for three speed stages on the right of the
middle position.
