Becker O 5.10 Operating Instructions Manual page 21

21 | O 5.10, O 5.16, O 5.21, O 5.25, U 5.40
6.4 SWITCH ON PUMP
The pump is switched on via switching elements in the application. After switching on, the pump goes directly into
normal operating mode. There are no subordinate operating modes for setup, maintenance or troubleshooting.
The pump must not be switched on until it has been properly set up, the electrical installation has been properly
installed and the media lines have been connected.
6.5 NORMAL OPERATION
In normal operation, the pump operates fully automatically within its physical limits, according to the customer's
control.
6.6 SWITCH OFF PUMP
1. Shutdown
To switch off, the pump must be shut down from the application and secured against being switched on
again. In addition, a warning sign must be attached to the mains disconnection device.
All electrical equipment must be individually disconnected. Maintenance and servicing activities are strictly
prohibited during operation or when the pump is switched on.
2. Disconnection from the power supply
A verifiably qualified electrician switches the motor free and disconnects it. After carrying out the 5 safety
rules, non-qualified electricians may also carry out activities on the pump.
After completing the activities, follow the instructions in the chapter 6.7.
The following points must be observed when installing the pump:
The permissible connection types of the motor can be found on the
motor type plate.
Connecting the 3~motor
• The motor must be connected according to the connection
diagram (see terminal box cover or instruction leaflet in the
terminal box).
• The following points must be observed when installing the pump:
The permissible connection types of the motor can be found on the
motor type plate.
The pump must be protected by an overload protection (motor
protection switch). Operation without appropriate fuse protection is
prohibited.
Connecting the 1~motor (O 5.10-O 5.25)
The motor is to be connected according to the adjacent diagram.
Connecting the 1~motor (U 5.40)
• The motor must be connected according to the connection
diagram (see terminal box cover or instruction leaflet in the
terminal box).
Approved direction of rotation of the pump
Before commissioning, check whether the pump is rotating in the
prescribed direction. To do this, start the pump only briefly (max. 3 sec.),
as operation with the wrong direction of rotation will cause damage to
the pump.
If the pump does not run in the specified direction of rotation (view of
the motor fan wheel), this must be changed by swapping two connection
phases.