Maintenance
6
Operation
6.1
Configure device
Device is installed in the tank.
Device is connected properly with the power supply and
ready for operation.
If necessary, the float position can be adjusted manually
with the keys.
On delivery, the device is set as follows:
–
Top float position = 20 mA
–
Bottom float position = 4 mA
1. Remove both plugs to operate the keys.
2. To set the bottom float position, proceed as follows:
–
Empty the tank until the desired float position is
reached.
–
Press the 4 mA key or the 20 mA key with a suitable
tool as required.
–
Check the setting 4 mA or 20 mA in the control display.
The bottom float position is stored for the selected current
output.
3. To set the top float position, proceed as follows:
–
Fill the tank to the maximum level until the desired float
position is reached.
–
Press the 4 mA key or the 20 mA key with a suitable
tool as required.
–
Check the setting 4 mA or 20 mA in the control display.
The top float position is stored for the selected current out-
put.
4. Mount both plugs on the keys.
6.2
Restore the pump to service
Device is installed in the tank.
Device is connected properly with the power supply and
ready for operation.
Device is set manually as required.
For this purpose, the current output for filling level must
be displayed in the higher-level controller as a measured
value.
After starting the superordinate control, the device trans-
mits a current signal (4-20 mA) linear to the filling level.
7
Maintenance
WARNING
Risk of injury and poisoning due to hazardous or hot
media!
Use personal protective equipment when carrying out any
work on the device.
Make sure that the tank is depressurized.
Block the media supply to the tank.
Switch off the power supply to the system.
Secure the power supply against being switched back on
again.
Provide warning of maintenance and repair work and set
up warning signs.
7.1
Servicing
Interval
Action
As
necessary
•
Clean device with a damp cloth.
Six-monthly
Visual and function check:
•
Normal operating conditions unchanged
•
No leaks
Tab. 3
Servicing activities
Perform maintenance tasks according to the table.
7.2
Maintenance
7.2.1
Removing the device
System is empty.
System has been flushed.
System is depressurized.
System has cooled down.
System must be secured against being switched back on
again.
1. Unplug connection cable.
2. Take the device out of the tank.
3. Decontaminate device if required.
8
MOT C2
BA-2020.11.16 US
302 352
