Replacing The Transducer Assembly - ABB Totalflow G5 Series Application Manual

3.7 Replacing the µFLO
When replacing either the differential or linear transducer assembly only, the
electronic board must be removed and reinstalled on the replacement assembly.
This procedure is applicable for either a differential or linear transducer assembly.
1. Follow the procedure detailed in section 3.6.1, Remove the IMV assembly, on
page 13. Return here when completed.
2. Remove the the µFLO
a. On the old transducer assembly, remove the cover plate and set aside
separately to reinstall on the old transducer assembly after the board has
been transferred (Figure 5, µFLOG5 assembly, exploded view, page 11).
b. On the old assembly, use a ¼ inch socket driver to remove the six (6) hex
standoffs that attach the µFLO
c. Lift the board away from the transducer housing carefully. The electronic
board to transducer sensor cable is very short, approximately 3 inches. Do
not pull the board completely away until the cable is disconnected from the
back of the board. Grasp the electronic board to transducer sensor cable at
the back of the board and disconnect it.
3. Transfer the electronic board to the replacement transducer assembly:
a. On the new transducer assembly, use a phillips screwdriver to remove the
four (4) screws that secure the transducer cover plate containing the new
transducer information. Remove and set the plate aside.
b. Move the electronic board to the new replacement assembly. Attach the
electronic board to transducer sensor cable to the connector on the back of
the electronic board.
c. Carefully feed the excess cable back into the transducer housing, and align
the board mounting holes with their respective standoffs.
d. Using a ¼ inch socket driver, reinstall the six (6) hex standoffs and tighten.
e. Remount the cover plate that came with the new transducer assembly onto
the electronic board using a phillips screwdriver.
4. Remount the old cover plate onto the old transducer assembly.
5. Follow the procedure detailed in section 3.6.2, Reinstall the IMV Assembly, on
page 15 to complete the replacement of the transducer assembly.
G5 transducer assembly (only)
G5
electronic board from the old transducer assembly:
G5 electronic board to the transducer housing.
2105514-001 rev. AB | 17