Commissioning/Operating Check; General Remarks; Deaerating; Operating Check - Biral WX 10 Instructions D'installation Et D'entretien

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6. Commissioning/Operating check

6.1 General remarks

Fill the system correctly and deaerate it.
Only put the pump into operation when the plant has been filled.
Switch on the power supply.

6.2 Deaerating

Deaeration of the pump, in particular the motor area, is
implemented automatically after a short period of operation.
However, if very rapid deaeration is required, proceed as follows:
- Switch pump off
- Reduce system pressure to 0.5 bar
- Release the screw plug so far (approx. one turn in
an anti-clockwise direction) until water emerges.
There is a risk of scalding.
Depending on the temperature and system pressure,
hot pump medium can emerge in the form of liquid or steam.
- Never remove the screw plug completely –
the pump can suck in air.
Powerful escape of liquid.
- Switch the pump on and off 5 to 8 times until
only water emerges at the screw plug.
- Tighten screw plug.
- Increase system pressure again.
- Switch pump on.

6.3 Operating check

The pump runs so quietly that a metal rod or a srewdriver has
to be placed on the pump and held to you ear when making
the acoustic operating check.
6.4 Deblocking
Switch pump off.
Shut the stop valves before and after the pump.
Risk of burning if the pump is touched.
Pump and motor can be very hot.
There is a risk of scalding.
Depending on the temperatur and system pressure,
hot pump medium can escape in the form of liquid or steam.
After undoing the screw plug (water emerges through
the bearing clearance) deblock the rotor shaft with a screwdriver.
Rotate the shaft end until the resistance decreases.
Fit screw plug.
Open the stop valves before and after the pump.
Switch pump on.
Depending on the operating pressure
Warning
(sealing, slide valve), the pump rotor can become
blocked.