Installing And Removing Electronics Boards - Endress+Hauser Proline Prosonic Flow 93C Operating Instructions Manual

Troubleshooting
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9.5

Installing and removing electronics boards

Warning!
• Risk of electric shock.
Exposed components carry dangerous voltages. Make sure that the power supply is switched off
before you remove the cover of the electronics compartment.
• Risk of damaging electronic components (ESD protection).
Static electricity can damage electronic components or impair their operability. Use a workplace
with a grounded working surface, purposely built for electrostatically sensitive devices.
• If you cannot guarantee that the dielectric strength of the device is maintained in the following
steps, then an appropriate inspection must be carried out in accordance with the manufacturer's
specifications.
Caution!
Use only original Endress+Hauser parts.
1. Loosen the screws and open the housing cover (1).
2. Loosen the screws securing the electronics module (2). Then push up electronics module and
pull it as far as possible out of the wall-mount housing.
3. Disconnect the following cable connectors from amplifier board (7):
– Signal cable connector (7.1)
– Plug of exciting current cable (7.2):
Gently disconnect the plug, i.e. without moving it back and forward.
– Ribbon cable plug (3) of the display module
4. Remove the cover (4) from the electronics compartment by loosening the screws.
5. Remove the boards (6, 7, 8):
Insert a thin pin into the hole provided (5) for the purpose and pull the board clear of its holder.
6. Installation is the reverse of the removal procedure.
Proline Prosonic Flow 93C FOUNDATION Fieldbus
Endress+Hauser