FMC Corporation - Talstar 80 - Handbuch (Seite 83)

Proline Promass 80 PROFIBUS PA Troubleshooting
83
Wall-mount housing
#
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
purpose-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 FMC Technologies parts.
Fig. 39, installation and removal:
1. Loosen the screws and open the hinged cover (1) of the housing.
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 plugs from amplifier board (7):
– Sensor signal cable plug (7.1) including S-DAT (7.3)
– Plug of excitation current cable (7.2). Gently disconnect the plug, i.e. without moving it back
and forth.
– 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.