BA series pumps
1401 Pump unit with electric drive
7.4
Note
The pressure switch is wired differently than the float switches, so it is not possible to use both.
Because the pressure sensor is optional, only the standard float switches are explained.
The float switches that are used are identical. However, which
float switch is used for the minimum level (1) and maximum
level (2) depends on where the plug is connected on the control
panel.
The float switches are made for use in water.
For use in other substances, contact BBA Pumps.
Note
When float switches are used it is important that the pump unit
cycle on and off no more than four times per hour. Keep this in
mind when positioning the float switches.
WARNING
When float switches/pressure sensors are
used the pump unit may start automatically.
Therefore always switch off the power when working on the pump unit.
7.5 Safeguards
Make sure that if safeguards are required they are installed and the right type of safeguard is used (see
technical specifications BA series).
The installation instructions explain when a safeguard must be installed.
Examples of types of safeguards that may be required are:
• temperature
• overpressure
• under pressure
• direction of rotation
• oil level
• overload
•etc.
It is not permitted to use the motor without a motor protection switch.
To protect the motor against overload, a thermal motor protector or thermal/magnetic motor protector
must be installed.
Use the nominal power rating of the motor when setting the protector.
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