Kessel Aqualift F XXL 400 litres 50 Hz Series, Instructions For Installation, Operation And Maintenance

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Set-up and putting into operation
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5.5.1 Electronic control unit Aqualift Comfort Plus SD
The control unit included in the scope of delivery regulates and monitors the operating functions and reports any
problems which occur. For more detailed information please refer to the control unit‘s installation and operating
instructions.
5.6 Direction of rotation
The direction of rotation of 3-phase motors must be checked before initial operation. When a KESSEL control unit
is used, a rotary field fault is indicated. Where pumps are already installed, the correct direction of rotation can be
checked by comparing the pumping height and pumping quantity with different directions of rotation. The direction
of rotation with the greater pumping height and pumping quantity is the correct direction of rotation. If the direction
of rotation is wrong, 2 phases of the mains connection must be swapped. The given pumping and output data are
only achieved with a rotary field rotating clockwise. The machine has not been designed for operation with a rotary
field rotating anti-clockwise.
5.7 Motor protection
The minimum requirement is a thermal relay / motor protection switch with temperature compensation, differential
actuation and synchrocheck in accordance with VDE 0660 or corresponding national regulations. If the machines
are connected to mains power supplies where frequent problems occur, we recommend th additional installation
of protective devices e. g. overvoltage, undervoltage or phase failure relays, lightening protection etc.). Local and
legal regulations must be complied with when the machine is connected.
5.8 Operation of Aqualift F XXL
The control unit distributes the operating times to both pumps by changing the switch-on sequence after every
pump run has finished. If the pump level in tank 1 has been reached, the first pump is put into operation. If the
medium continues to rise in the tank up to switch-on level 2, the second pump is automatically switched on in
addition. If the liquid level falls to level 1 again, the first pump is switched off. The pump which is still in operation
is switched off when the switch-off level has been reached. If both pumps are in operation and the level of liquid
exceeds the alarm level, an alarm signal is triggered and remains active until the level of liquid has fallen to below
the alarm level.
5.9 After switch-on
The nominal current is exceeded briefly during the start-up process. After this process has been completed, the
operating current should not exceed the nominal current again. If the motor does not start up directly after switch-
on, it must be switched off immediately. Before the motor is switched on again, the switching pauses specified in the
technical data must be observed. If the problem is repeated, the machine must be switched off immediately again.
Switch-on may only be attempted again after the problem has been eliminated.
The following points should be checked:
• Operating voltage (permissible dev/- 5% of the rated voltage)
• Frequency (permissible deviation -2% of the rated frequency)
• Current consumption (permissible deviation between the phases max. 5%)
• Difference in voltage between the individual phases (max. 1%)
• Switching frequency and pauses (see technical data)
• Minimum water cover, level control, dry-run protection
• Smooth running
• Check for leaks, carry out the necessary steps according to the “Regular maintenance” chapter if necessary.