Emerson Rosemount 6888C Instruction Manual page 68

Maintenance and service
July 2018
Figure 8-2: DR terminal board mounting
A. Cover
B. Plastic cover
C. DR terminal board
D. Mounting plate
E. Screws
F. Screws
1. Remove cover (A) from the DR probe housing.
2. Disconnect the power and signal wires from the DR terminal board (C).
3. Remove the three screws (E) securing the plastic cover (B) and DR terminal board (C) to
mounting plate (D).
4. Disconnect the two wire harness connectors from the back of the transmitter board
and remove the plastic cover and transmitter board.
Replacement DR terminal boards come in two configurations:
a. DR terminal board with thermal pad and mounting screws
b. DR terminal board, thermal pad, plastic cover, mounting plate, and mounting
5. If the mounting pad is being replaced, remove the four screws (F) securing the plate to
the housing. Install the new mounting plate using four screws.
Replacement screws are provided if any become lost or damaged.
6. Reconnect the two wire harness connectors to the back of the DR terminal board.
The connectors are different and individually keyed to prevent misconnection.
7. Carefully push the wire harnesses through the hole in the mounting plate and align the
DR terminal board with plastic cover over the three standoffs on the mounting plate.
8. Install the three screws to secure the board to the mounting plate.
68
screws
Instruction Manual
00809-0100-4891
6888C