Operating Instructions PC-25 page 8 (10)
Adjustment of temperature control:
Water temperature
-
+
Solar temperature
-
+
The electronic temperature control and the temperature
sensor have been matched factory-provided. If one of the
sensors is being exchanged or the sensor leads is being
lengthened, you have to carry out a new adjustment with the
potentiometers in the control unit, as necessary. A clockwise
turning of the potentiometer for the water temperature sensor
will cause an increase of the displayed water temperature. If
the potentiometer for the solar sensor is turned clockwise, an
increased collector temperature will be displayed. Since the
solar temperature control only works properly with precisely
adjusted sensors, this adjustment should only be carried out
by a trained service technician.
Fuses:
T2A
Inside the housing the electronic control is protected
by a 2A micro-fuse on the circuit board. The short-
circuit protection for the filter pump has to be
ensured by customer provided pre-fuses of max.
16A.
Electronic motor protection:
22
23
30
31
32
33
Heating
Motor-
Water
Sun
protection
0
8A
The three-phase-current filter pump is protected against
damages caused by overload by an electronic motor protection.
For this the motor protection has to be adjusted to the nominal
current of the filter pump (see type plate of the pump). The
adjusting regulator for the motor protection is placed in the
clamping box, to protect it against inadvertent adjusting. If the
nominal current of the filter pump is not known, the motor
protection can be adjusted according to the following process:
1. Turn adjusting screw of the motor protection to the right stop.
2. Switch on pump
3. Turn adjusting screw slowly anti-clockwise as long till the
motor protection is triggered and the error signal
motor-
protect.
will appear.
4. Turn adjusting screw clockwise by some angular degrees
(approx. 10%).
5. Confirm error signal with the key – the filter pump can be
switched on again.
