BA series pumps
1401 Pump unit with electric drive
7.6
Isolation switch
In order to be able to perform work on the pump or pump unit safely, the isolation switch must be placed
as close as possible to the pump unit.
It is recommended that an earth leakage circuit breaker also be installed.
The installation must be protected against inadvertent starting. The switching equipment must comply
with the local regulations.
7.7 Commissioning
Perform the following steps to commission a pump or pump unit with an electric drive:
– Check the pump type (type plate) and the characteristics of the pump unit, such as: rpm, operating
pressure, power consumption, operating temperature, direction of rotation, NPSH, etc.
– Check whether the electrical system has been installed in compliance with local regulations. Also
check whether the required measures have been taken to completely eliminate danger to the user.
– Check whether the motor connection matches the mains voltage.
– Check the setting of the motor protector.
– Connect the suction and pressure pipes.
– Fill and bleed the pump (only necessary if there is no vacuum system present).
7.8 Checking the direction of rotation
WARNING
This test may only be performed by personnel with the appropriate training and
authorisation.
Check whether the direction of rotation of the motor matches that of the pump.
To check the direction of rotation the motor must be switched on briefly. The motor must not be allowed
to reach the normal operating speed.
If the direction of rotation is incorrect, the connection must be changed in the terminal box.
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