Maintenance Condition - wtw DIQ/S 182-MOD System Operating Manual

System 182
Measured value
display
Clean flashes
(automatic sequence)
= Maintenance condition ON
ba75504e07 04/2012

4.4.2 Maintenance condition

When an IQ sensor is calibrated, cleaned, serviced or repaired, the
maintenance condition for the relevant IQ sensor should always be
switched on.
In the maintenance condition
 apart from the measured value display, the system does not react to
the current measured value or the condition of the selected
IQ sensor
 IQ sensor errors do not prompt changes in the conditions of linked
outputs.
The following diagram gives you an overview of when an IQ sensor is
in the maintenance condition.
Sensor
cleaning
Measured value
active
The measured value
stops flashing
Sensor
cleaning
c
OFF
Display message:
Switch
maintenance
Continue/Cancel
g
Calibration
g
Calibration
display
e/m
on the
condition
Step 1
e
Step n
End
Maintanance
condition ON
Measured value
manually
The measured
Maintanance
condition OFF
manually
c
m
g m e
/ /
= Maintenance condition OFF
Operation
display
value flashes
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