Deaerating; Deblocking - Biral LX Instrucciones De Instalación Y Funcionamiento

47 english

6.3 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.

6.4 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.
On pumps with a screw plug, check the shaft's
direction of rotation.