Replacing The Electronic Board - ABB Totalflow G5 Series Application Manual

3.5 Replacing the µFLO
3.5.1 Remove the electronic board
This procedure is applicable only for the direct replacement of the µFLO
board. If removal of the electronic board is required during another procedure, those
instructions will be addressed in that procedure.
To remove the µFLO
1. Follow the procedure in section 3.1, Preserving data and configuration files, on
page 5. Return here when completed.
2. Follow the procedure in section 3.2, Disconnect power, on page 5. Return here
when completed.
3. Follow the procedure in section 3.4.1, Remove the I/O expansion board, on
page6. Return here when completed.
4. Disconnect the following, if connected, from the µFLO
a. LCD display cable from J8 connector.
b. Communication connections:
- MMI communication cable plug from J9
- USB cable plug from J4
- Ethernet cable plug from J1
c. Field wiring connections:
- Communication wiring from J10
- DI wiring from J12
- DO wiring from J13
- RTD sensor from J3
5. On the transducer housing assembly, use a phillips screwdriver to remove the
four (4) screws that attach the cover plate that contains the transducer
information. Remove and set the plate aside (Figure 4). The cover plate should
always stay with the IMV.
6. Using a ¼ inch hex driver, remove the six (6) hex standoffs that attach the
G5
µFLO electronic board to the transducer housing.
10 | 2105514-001 rev. AB
G5 electronic board
G5 electronic board:
IMV COMPLETE:
2105263- __
SENSOR W/CONTROLLER BOARD INSTALLED: 21052634-5XX
SENSOR ONLY (LOL NOTCRE): 2104797-0XX
CONTROLLER BOARD : 2104939-001
PROCESS WETTED MATERIALS OF TRANSDUCERS CONFORM TO NACE MR-01-75
Static pressure sensor is on the
upstream (+ side) of DP sensor.
Set flow computer SP tap
location to upstream.
Figure 4: Cover plate with transducer information
G5
electronic board:
TOTALFLOW Products
MADE IN U.S.A.
IN H2O
PSIA
2104600-009
G5
electronic