Operation & Installation Manual V12-V6 2010-05-31.doc
31/05/2010
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Figure 7-2: Transducer extraction tool in retracted position
7.4 Exchange of Electronics Unit
WARNING!
Do not open the electronic housing if the electronics is powered in an hazardous
environment. Pending on local safety regulations, remove the power or use gas detection
equipment.
DANGER!
Electrostatic discharge (ESD) can damage electronic parts. Make sure to discharge yourself
by wearing a wrist strap. If no wrist strap is available, ground yourself by touching a metal
surface that is grounded.
Use following instructions to dismantle the converter housing and to exchange one or more
electronics boards.
Always read instructions for safe handling of the equipment and installations first.
Switch off and disconnect power supply from the equipment as described in par. 7.3.1
Open the cover (turn anti-clockwise) of the compartment where the part to be replaced
is located. (First release the fasteners that prevent thoughtless or imprudent opening of
the Ex d enclosure, this requires a 2.5 mm Allen key).
The major part of the electronics is located in the compartment with the glass window.
After removing the cover with the glass window: remove the display unit. Release it by
inserting a pair of screw drivers as indicated. (2).
