VEGA Capacitive electrodes EL … - Manual (Page 39)

Capacitive electrodes EL … 39
Diagnosis
5 Diagnosis
5.1 Simulation
Test switch
For simulation of a switching condition, a test
switch can be optionally integrated in the
housing. By pushing the test switch an additio-
nal capacitance is switched. Hence only the
function of the oscillator and the connected
instruments are tested.
Note
When the changeover switch is set to position
3, it can be possible that the connected
capacitance is not sufficient to carry out a test.
The test switch can be only used for simulation
of a max. level (overfill protection).
Test
Set the test switch to position 1. The
changeover of the test switch to position 1
increases the capacitance of the uncovered
electrode so that the oscillator responds and
triggers an alarm signal. The connected
instruments are activated.
Note
After the test it is absolutely necessary to reset
the test switch to basic position (position 0).
5.2 Maintenance
The instrument is maintenancefree.
5.3 Repair
Due to safety and guarantee reasons repair
work beside the wiring must only be made by
VEGA-staff.
In case of a defect please return the
appropriate instrument with a short description
of the error to our repair department.
Failures are shortterm malfunctions of the
instrument which are caused by wrong
adjustment or defects on the sensor or the
connection lines.
Failures, possible reasons and their removal
are stated under "5.4 Failure removal“.