FB2100/FB2200 Flow Computer CPU Enclosure & Electronics Field Replacement Guide
D301803X012
November 2020
1
Replacing the CPU Enclosure & Electronics
You can replace the CPU enclosure and its individual boards in the field provided that the
replacement has the exact same part number and version.
There is considerable overlap between the different field replacement procedures for the items
covered in this guide. This guide presents several discrete tasks which are used, and then
references them in procedures as they are needed.
Restriction
Hazardous area approvals require that any part replaced in the field be the exact same part (“like-
for-like”). Upgrading or substituting different parts violates hazardous area certification.
Contents
Removing/Restoring Main Power .............................................................................. 3
Removing Main Power ...................................................................................... 4
Restoring Main Power ....................................................................................... 5
Replacing the HMI Module ........................................................................................ 5
Removing the HMI Module ............................................................................... 6
Replacing the HMI Module ................................................................................ 6
Disconnecting the Cable Between the CPU Enclosure and the Sensor ........................ 7
Detaching/Re-Attaching the CPU Enclosure from/to the Battery Compartment ........ 7
Detaching the CPU Enclosure from the Battery Compartment .......................... 7
Re-attaching the CPU Enclosure to the Battery Compartment ........................... 9
Removing/Replacing the CPU Enclosure Cover (Top) ................................................ 9
Removing the CPU Enclosure Cover (Top) ....................................................... 10
Replacing the CPU Enclosure Cover (Top) ....................................................... 11
Removing/Replacing the Adapter Board ................................................................. 12
Removing the Adapter Board .......................................................................... 12
Replacing the Adapter Board .......................................................................... 14
Removing/Replacing the CPU Board ....................................................................... 14
Removing the CPU Board ................................................................................ 14
Replacing the CPU Board ................................................................................ 16
Removing/Replacing the Optional 6-Channel Expansion I/O Board ......................... 17
Removing the Optional 6-Channel Expansion I/O Board .................................. 18
Replacing the 6-Channel Expansion I/O Board ................................................. 18
Removing/Replacing the Connectivity Board .......................................................... 18
Removing the Connectivity Board................................................................... 20
Replacing the Connectivity Board ................................................................... 21
Removing/Replacing the CPU Enclosure (Bottom) .................................................. 21
Removing the CPU Enclosure (Bottom) ........................................................... 22
Replacing the CPU Enclosure (Bottom) ........................................................... 23
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