IFM Electronic efector300 SI1004 Operating Instructions Manual page 25

I I Locking / Unlocking
The unit can be electronically locked to prevent unwanted adjustment
of the set parameters: Press both setting buttons for 10 s (the unit
must be in Run mode). Indication goes out briefly (acknowledgement
of locking / unlocking).
Units are delivered from the factory in the unlocked state.
With the unit in the locked state indication goes out briefl when you
press the Mode/Enter button.
Installation and set-up / Operation / Maintenance
When the supply voltage is applied, all LEDs light and go off one after
the other.* The unit is then ready for operation.
*During this time the output signal is 20 mA.
Check the sensor tip for build-up from time to time. Clean it with a
soft cloth. If necessary, build-up which adheres firmly (e.g. lime) can
be removed with a common vinegar cleansing agent.
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