FB2100/FB2200 Flow Computer CPU Enclosure & Electronics Field Replacement Guide
D301803X012
November 2020
14
Replacing the Adapter Board
1.
Gently slide the adapter board onto the CPU board connector.
2.
Once on the connector, carefully lift it just enough so it moves to sit inside the four plastic
tabs on the bottom of the CPU enclosure.
3.
Replace the two CPU board screws nearest to the adapter board. Torque the screws to 1 to 2
in-lbs (0.1 to 0.2 N-m).
4.
Replace the CPU enclosure cover. See Replacing the CPU Enclosure Cover (Top) on page 11.
5.
Attach the entire CPU enclosure assembly to the battery compartment inside the flow
computer enclosure. See Re-attaching the CPU Enclosure to the Battery Compartment on page
9.
6.
Re-connect the cable between the CPU enclosure and the sensor.
7.
Replace the HMI module. See Replacing the HMI Module on page 6.
Removing/Replacing the CPU Board
UL Listed CPU Board Field Installed Accessory Kit for Use in Class I, Division 2, Groups A, B, C, and D
Flow Computer CPU Board Field Installed Accessory Kit Part No.621678-01-0 for use with UL
Listed Model Series FB2100 and FB2200.
The CPU board resides inside the CPU enclosure. You would remove/replace the CPU board if it
fails, or as a step in the field replacement of the 6-channel expansion I/O board, the connectivity
board, or the CPU enclosure (bottom).
Removing the CPU Board
1.
Remove the HMI module. See Removing the HMI Module on page 6.
2.
Disconnect the cable between the CPU enclosure and the sensor. See Disconnecting the Cable
Between the CPU Enclosure and the Sensor on page 7.
3.
Detach the CPU enclosure from the battery compartment. See Detaching the CPU Enclosure
from the Battery Compartment on page 7.
4.
Remove the CPU enclosure cover. See Removing the CPU Enclosure Cover (Top) on page 10.
5.
Remove the adapter board. See Removing the Adapter Board on page 12.
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