Endress+Hauser Proline Prowirl 73 - Page 75

Proline Prow irl 73 Troubleshooting
Endress+Hauser 75
Ex-d/XP version
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Warning!
When connecting Ex-certified devices, please refer to the notes and diagrams in the Ex-specific
supplement to these Operating Instructions.
Please do not hesitate to contact your Endress+Hauser representative if you have any questions.
"
Caution!
Electrostatic charge!
Risk of damaging electronic components or impairing their function (ESD protection).
• Use a workplace with a grounded working surface, purpose-built for electrostatically sensitive
devices!
• Use only genuine Endress+Hauser parts.
Procedure when installing/removing electronics boards (å 32)
Installing/removing the I/O board (COM module)
1. Release securing clamp (a) of the connection compartment cover (b).
2. Unscrew the cover (b) of the connection compartment from the transmitter housing.
3. Disconnect terminal connector (c) from the I/O board (COM module) (e).
4. Release threaded connection (d) of the I/O board (COM module) (e) and pull out the board
slightly.
5. Disconnect connection 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/removing the amplifier board
1. Unscrew the cover (g) of the electronics compartment from the transmitter housing.
2. Remove the local display module (h) from the retaining rails (i).
3. Fold up the plastic cover (j).
4. Remove 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 screws (n) of the board holder (o).
8. Pull out the board holder (o) slightly and disconnect 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.