FB1100 Flow Computer Instruction Manual
D301752X012
November 2023
62 Service and Troubleshooting
3.
Remove the HMI module.
4.
Grasp the coin cell battery and remove it from its slot.
Figure 4-6. Removing/Replacing the Coin Cell Battery
5.
Insert the new coin cell battery in the slot. The positive side (+) must be on top.
When inserting the SRAM coin cell battery, push the battery gently into its slot
until it stops. The battery should slide in easily. Do not use excessive force.
6.
Replace the HMI module.
7.
Replace the end cap. Screw the end cap clockwise (eight full turns) until it is tightly
sealed to the enclosure. Re-attach the retaining clamp, if applicable (see Section
2.6.1).
4.7 Upgrading System Firmware
Periodically Emerson releases new system firmware for the flow computer to introduce
new features or update system functions.
You must know a valid username/password combination for the flow computer to
complete this process.
EXPLOSION HAZARD: Ensure the area in which you perform this operation is non-
hazardous. Performing this operation in a hazardous area could result in an explosion.
Important
A power loss occurring during a firmware update to a unit with a dead SRAM coin cell
battery can corrupt SRAM memory and place the flow computer in a continuous boot
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