Commissioning/Operating Check; General Remarks; Direction Of Rotation; Deaerating - ITT HXC 501-1 Betriebsanleitung

HXC 501-LXCD 655 20.10.2006
48
Rotary switch
HXC 501
8:16 Uhr Seite 48
english

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 Direction of rotation

Simple rotation direction check by push button;
compare the motor shaft's direction of rotation with the direction
of rotation stated on the type plate.

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 Power regulation

The required delivery head is set by means of the rotary switch on
the pump terminal box (uniformly from p.g. 2 ... max.
see imprint on cover).
Thanks to this inifinitely variable regulation, the pump can adjust
to the respective requirements of the system.