7.1
Electrical connection (see figure 5)
The unit may only be connected by an authorized
electrical specialist.
Before the electrical connection is made, the unit
must be filled;
if not, the bearings will be destroyed by dry operation.
Connect the pumps according to the proper connection scheme.
In case of unit equipped with timer follow the sequence shown in
fig. 7.
7.2
Getting started
The pump may not be run dry, as this can destroy the
bearings in a very short time.
Before starting, the system must be:
-
Filled.
-
Rinsed thoroughly to prevent foreign objects and impurities from
blocking the pump.
-
Completely bled.
Audible flow noises indicate that there is still air in the pump.
Bleeding is sped up by repeatedly switching the pump on and off. If
necessary, remove the residual air as follows:
- Disconnect the pump from the mains.
- Slightly loosen the union nut and carefully open the
supply line until water runs out of the union nut.
Prevent the electrical connection to the pump from
getting wet.
- Tighten the union nut again and reconnect the pump to
the mains.
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