PC-250 Filter control unit operating manual Page: 4 (24
Function:
The
PC-250 filter control unit enables
time-dependent switching on and off of a
400 V three-phase current pump or a 230
V alternating current filter pump in
accordance with a freely programmable
switching program.
Backflushing can be carried out both with
bar
valves
and
with
the
EUROTRONIK-10
backflushing control
system and 6-way valves.
heater of the swimming pool is controlled
by the electronic temperature regulation
system while the filter pump is running.
The heater is automatically switched off by
the internal interlock during filter pauses.
The
required
swimming
pool
water
temperature can be selected on the front
panel, or the heater can be switched off. A
floating contact (terminals 22 + 23) and a
voltage-carrying output (terminal U2) are
available for connecting the heater.
The
microprocessor
automatically
activates the solar temperature regulation
through the connection of a solar
temperature
sensor
(Art.
No.
3100000030). Free solar energy will
therefore be given priority in heater the
swimming pool. The additional heater
(terminals U2 and N) will only be switched
on automatically if the solar unit is not
supplying any energy. The solar heater
and, simultaneously, the filter pump will
also start if solar energy is available
outside filter running times (timer off). The
solar temperature sensor is suitable for
operating solar absorbers through which
the swimming pool water flows directly.
This controller is not usable for other types
of solar collector.
Terminals for electronic level regulation
NR-12-TRS-2
(Art.
No.
3030075020)
enable convenient automatic regulation of
the swimming pool water level. The filter
pump is also additionally protected against
damage which could be caused by filter
unit operation without water.
The INFO key on the front panel enables
reading
out
of
various
operating
parameters in addition to language
changeover.
Extra terminals enable the connection of
additional devices such as a dosing
system. Terminals 20 + 21 are floating,
and can therefore be used individually.
The relay contact between terminals 20
and 21 remains closed during the filter
periods, the relay contact is opened
outside these periods. This contact can be
loaded with a voltage of maximum 230 V
and a current of maximum 8 A.
The terminals for the coil earthing contact
enable the connection of a coil earthing
contact switch which is integrated in the
filter pump motor windings. If this contact
opens, for example due to excessive
motor winding warming, the filter pump will
be switched off automatically, and with it
the heater and dosing system. As soon as
the coil earthing contact closes once the
motor windings have cooled down, the
units will be started up again automatically.
Manual resetting is not necessary. The
terminals for the coil earthing contact are
provided with 230 V.
Operation of filter pump and heater is
displayed by indicator lamps in the front
panel, which means that checks can be
made at any time.
The filter pump is protected by an
electronic motor protection system (current
range infinitely variable up to 8A) against
overloading.
