SL6KLN1AU_ara_en_a_638_X.doc – 15.02.08
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4.20 Circulation pump (SICASYM)
The circulation pump is driven by a two-pole single-phase a.c. motor.
The switching of the two motor windings with the motor capacitor is
actuated either via electronics or a relay on the motor connection
c
or
via the module
d
. In the start phase the two windings (one in series
with the capacitor) are connected in parallel to each other and directly
to the mains voltage and generate a very high starting torque. After
the switchover phase, the windings are then in series (one behind
the other), i.e. each winding is connected to half the mains voltage.
The motor is then adjusted optimally to the (operating) pump and
generates very little noise apart from a very low power consumption
– for label AAA –, as the windings are connected to half the mains
voltage during operation. The motor has a thermal coil protection
(bimetal) against overheating.
Terminal diagram:
Operation:
Start:
Technical specifications
Designation Value
Unit
Nominal voltage
230 - 240
V
Frequency 50
Hz
Resistor
Ha 40 - 54
Hi 45 - 70
Ω
Delivery height
3.0 – 4.0
m
Delivery capacity
approx. 17 - 63
l/min
Starting current
1.3 – 2.2
A
Working current
0.3 – 0.4
A
