15
8
Starting and stopping
1. Check the pump type (type plate) and the characteristics of the pump unit, such as: speed, operating
pressure, consumed power, operating temperature, direction of rotation, etc.
2. Check whether the pump unit is placed in accordance with the instructions. Pay particular attention
to the area around the pump unit. Make sure the pump unit can draw adequate fresh air.
3. Check whether the prescribed safety provisions are in place.
4. Connect the lines.
5. If the pump is dry, the pump housing must first be filled with water.
6. Perform the daily maintenance.
7. In the case of a bypass line, close the shut-off valve in the bypass line once the pump has built up
pressure
8. To start the motor, the switch must first be turned to the star (1) position, and then turned to the delta
(2) position within one second. Motor must take nominal speed.
WARNING
Turning the switch too slowly will cause the motor's thermal protection to trip. Return
the switch to the neutral position and switch it on again.
9. If it is necessary to reduce the vacuum on the header pipe somewhat, this can be accomplished by
slightly readjusting the blow valve on the pump. This results in a bit of air leakage developing in the
pump at the stone catcher, which will slightly reduce the total vacuum on the header pipe.
