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Functional test
The functional test serves to determine the proper function of the reed contacts.
Functional test prior to installation in the container
Before the Float Switch is installed, it can be checked with a continuity checker or an ohmmeter.
1. Connect the wires of the switch
point to be tested to the
continuity checker or ohmmeter.
2. Raise float and move it up to the
switch point position. Depending
on
the
switching
function,
L1
continuity or no continuity will be
indicated.
3. Move float back to initial
L2
position. The switching function
must be reversed.
4. Repeat steps 1-3 for each
switching point.
Important:
The switching point dimensions
L… refer to the gasket area and
the distance to the middle of the
float.
Float raised
Float at initial
position
Functional test of installed Float Switch
1. The functionality of installed Float Switches can only be tested from the inside of the container
2. It is recommended to de-install the Float Switch for the functional test
3. Disconnect electrical connections
4. De-install Float Switch
5. Functional test as per chapter
"Prior to installation in container"
6. Install Float Switch in the container
7. Re-establish electrical connection as per the relevant connection scheme
Functional testing may trigger unintended reactions in subsequent control circuits. Only
specialist staff may work in this area in accordance with the safety guidelines applicable
in each particular case. Measures must be taken accordingly to prevent sparking.
When the magnetic float level switch is being used in an explosive atmosphere the
voltage input must be cut off before the housing is opened.
Risk of property damage or personnel injuries.
