wtw DIQ/S 182-PR, System Operating Manual

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System 182 Relay outputs
6 - 21 ba75503e07 04/2012
6.4.8 Cleaning
Function The Cleaning function enables the time controlled automatic start of the
sensor cleaning function with the aid of a relay of the Universal
Transmitter. The relay controls the DIQ/CHV valve module and
switches on or off the compressed air for the CH sensor cleaning head.
In order to set up the Cleaning function for a relay output, the relay
output must be linked with a sensor (see section 6.2.1).
The assigned relay always works as a closer.
The cleaning cycle consists of Cleaning duration and Adjustment time .
During the cleaning cycle the Clean display flashes. The outputs linked
with this sensor are frozen. The maintenance condition is active.
After the Cleaning duration , the relay is opened. During the following
Adjustment time the outputs remain blocked.
The outputs linked with this sensor are only released when the cleaning
cycle is completed. The
Clean display disappears. The maintenance
condition is finished.
Testing the
operativeness
You can test the operativeness of the cleaning system as follows:
manually open or close the relay with the
Manual control function (see
section 6.4.9) and, while doing so, check the behavior of the cleaning
system.
Alternatively, you can test the operativeness of the cleaning system by
checking the performance of the function at the start time set up
(reference time ± interval). To perform a test immediately, you can set
the reference time so that the next cleaning cycle will start in a few
minutes (settings: see following table).