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19
Commissioning
9 Commissioning
9.1 Start-up of the circulator
CAUTION
Absolutely avoid dry operation. Start the circulator only after having complete-
ly filled the plant.
CAUTION
Circulators with permanent magnets can not be driven in speed by means of
phase control of the supply voltage.
CAUTION
Circulators driven by an electronic frequency converter have a current peak at
each activation (inrush current) greater than traditional circulators (asynchro-
nous). The activation stage of the circulator has to be size taking into account
this current peak. For further details contact the manufacturer.
Activation frequency: activations/deactivations through the mains voltage ≤ 20/24 h.
9.2 Operating elements
Selector
All settings are made using the selector on the
housing front.
The selector can be adjusted in a continuous
way with a rotation angle of 270 °.
The arrow on the selector indicates the operating
mode chosen.
LED light
The LED light on the front advises the commis-
sioning/fault of the circulator.
Every operating mode is characterized by a fixed
light of different colour.
After a change of operating mode, the LED
pulses 5 times. The pulse will be a change of
brightness intensity of the LED light.
Fig. 9.1
: Selector and LED light
min. Ø 7.0 mm
max. Ø 8.5 mm
For cables with outer
diameter of the sheath
between 7 mm and
8.5 mm: remove the
rubber retainer from
the cable gland. In this
case, the circulator
can only be installed
with the cable gland
down.