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5.3 Replacement of defective parts
It's necessary to use new spare parts according the new updated list
, please contact us.
If the transmitter requires a replacement part, drain process
fl
uid from the transmitter,
disconnect The main parts of the transmitter are the ampli
fi
er unit and the measuring cell.
(5) After completion of replacement, perform zero and span adjustments.
(1) Turn off the power supply.
(2) Remove the indicator.
(3) Remove the electronics unit.
Unplug each connector.
(4) Assemble a new ampli
fi
er unit in the electronics
housing and connect the connectors. Assemble all parts
in the reversing way than described before. Check that
all the screws are correctly tightened and assembled the electronics housing cover on the
transmitter
When installing the electronics unit, make sure that
the zero adjust screw end is in front of the groove in
the amplifier unit.
Replace
fi
rst the ampli
fi
er unit to
fi
nd out if the failure reason comes from the ampli
fi
er unit or the
measuring cell. Run the function “Self Check” with the HHC to
fi
nd out the faulty part. When the
failure is detected, please replace the concerned part. Refer to the spare parts drawing at the
end of the instruction manual
Identification of faulty parts
When removing an explosion-proof transmitter, turn OFF the main
power, then disconnect the piping and wiring.
Do not remove it when the power is ON to prevent serious accident
such as explosion, fire, etc...
DANGER
Replacement of electronic unit - Procedure
Groove
Zero adjustment
Connection at rear
of electronics unit
Electronics unit
Indicator
The electronics unit should be removed carefully so as not to dam-
age the internal wiring.
PRECAUTION
PRECAUTION
Zero adjustment screw
