9 Troubleshooting
9-3. <MAINTENANCE REQUIRED>
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9-3. <MAINTENANCE REQUIRED>
Display
State explanation
Main cause and required action
Sonic sensor unit:
Detected low sound pressure within
permissible range
The sonic sensor contamination
or deterioration has progressed.
The sonic sensor unit must be
replaced.
Optical sensor unit:
Detected drifting within permissible range
In SETUP MODE, perform
reference calibration.
Optical sensor unit:
Detected low contrast of interference
fringes within permissible range
The optical sensor
contamination or deterioration
has progressed. The optical
sensor unit must be replaced.
Optical sensor unit:
Detected low brightness of interference
fringes within permissible range
The optical sensor
contamination or deterioration
has progressed. The optical
sensor unit must be replaced.
Detected failure of sensor unit disabled due
to calculation conditions of calorific value or
density
Since other devices may be
adversely influenced, it is
recommended to investigate the
cause and perform required
action for it.
Main controller:
Indicates that the factory adjustment is not
completed.
Not displayed for a shipped
product ordinarily.
Ⅱ2G Ex dbⅡB+H2 T4 Gb
Содержание OHC-800
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