Endress+Hauser Proline Prowirl 72 - Ex D;Xp Version

Proline Prowirl 72 FOUNDATION Fieldbus 9 Troubleshooting
Endress + Hauser 59
9.5.2 Ex d/XP version
!
Note!
• When connecting Ex-certified devices, please refer to the notes and diagrams in the Ex-specific
supplement to these Operating Instructions.
• 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!
"
Caution!
Use only genuine Endress+Hauser parts.
Procedure when installing/removing electronics boards (Fig. 29)
Installing/removing I/O board (COM module)
1. Release the securing clamp (a) of the connection compartment cover (b).
2. Remove connection compartment cover (b) from the transmitter housing.
3. Pull the terminal connector (c) out of the I/O board (COM module) (e).
4. Release fixing screws (d) of the I/O board (COM module) (e) and pull out the board slightly.
5. Remove connecting cable plug (f) from the I/O board (COM module) (e)
and remove the board completely.
6. Installation is the reverse of the removal procedure.
Installing and removing the amplifier board
1. Unscrew the cover (g) of the electronics compartment from the transmitter housing.
2. Remove the display module (h) from the retaining rails (i).
3. Fold up the plastic cover (j).
4. Remove the ribbon-cable connector of the local display module (h) from the amplifier board (t)
and release from the cable holder.
5. Remove the signal cable connector (k) from the amplifier board (t) and release from the cable
holder.
6. Release the fixing screw (l) and fold down the cover (m).
7. Release both fixing screws (n) of the board holder (o).
8. Pull the board holder (o) out slightly and disconnect the connecting cable plug (p) from the
board body.
9. Pull the board holder (o) out completely.
10. Press the side latches (q) of the board holder and separate the board holder (o) 
from the board body (r).
11. Replace the amplifier board (t):
– Loosen fixing screws (s) of the amplifier board.
– Remove the amplifier board (t) from the board body (r).
– Set a new amplifier board on the board body.
12. Installation is the reverse of the removal procedure.