8. Attach the Acquisition Cable terminal block to the new Backplane Board and plug
the Power Supply Board and I.S. Barrier board into the Backplane board.
9. Insert the Backplane (with the Power Supply and I.S. Barrier Boards attached to the
Backplane) into the enclosure.
10. Fully seat the CPU Module and Optional I/O Module onto the Backplane board.
11. Install the four Phillips head screws to secure the Backplane to the enclosure
standoffs.
12. Reinstall the terminal blocks on the CPU Module, Optional I/O Module (if installed),
and the Power Supply board using a 3 mm flat head screw driver.
NOTICE
Ensure the terminal blocks are aligned with the Guide Plate openings.
13. Recheck the connections, wiring and switch settings before replacing the end caps.
14. If replacing other electronics, continue with the following sections before replacing
the end caps and sealing the enclosure.
15. If you are not replacing other electronics, replace the end caps, security latches,
reseal the meter and apply power. If required, install the security seal wire into and
through one of the two holes in the end cap. Choose holes that minimize
counterclockwise rotation of the end cap when the security wire is taut (maximum
wire diameter.078 inch; 2.0 mm) (see Figure 3-23).
16. Adjust the security wire, removing all slack and thread into the lead seal.
17. Cut wire ends to remove excess wire.
18. Apply power to the meter.
This completes the Backplane Board replacement procedure.
If you encounter problems with this procedure, see the Flow Lifecycle Services for
Daniel products contact information on the back cover of this manual.
I.S. Barrier Board replacement
Procedure
1. If replacing the I.S. Barrier board, remove power to the meter.
2. Disconnect the Transmitter Electronics Enclosure security seals, loosen the end cap
security latches with a 3mm Allen wrench and remove both end caps (see Figure
3-26).
3. Use a 3 mm flat head screw driver and remove the terminal blocks from the Power
Supply board, the CPU Module and the Optional I/O Module (if installed). See Figure
3-21 for board locations and associated terminal blocks.
4. Use a Phillips head screw driver and remove the four Backplane board screws from
the enclosure standoffs. If the Local Display Module is installed on the Backplane,
use a flat blade screw driver and remove the four flat-head screws from the
standoffs.
5. Pull the Backplane board out of the enclosure. This disconnects the I.S. Barrier
Board. Lay the Backplane board down with the Acquisition Cable still attached (the
Power Supply board may remain attached to the Backplane when you remove it
from the enclosure).
Maintenance and Troubleshooting manual Meter repairs
P/N 3-9000-791 August 2021
Maintenance and Troubleshooting manual 79
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