Overview; Electronics Replacement; Display Board Replacement - Emerson Rosemount 5081FG Reference Manual

Reference Manual
00809-0100-4882, Rev AB
May 2019
Section 6

OVERVIEW

ELECTRONICS
REPLACEMENT
Display Board
Replacement
Maintenance and Service
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-1
Electronics Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-1
Oxygen Probe Replacement . . . . . . . . . . . . . . . . . . . . . . . page 6-3
This section provides the procedures to maintain and service the Rosemount
5081FG Two-Wire In-Situ Oxygen Analyzer.
Install all protective equipment covers and safety ground leads after equipment repair or
service. Failure to install covers and ground leads could result in serious injury or death.
Disconnect and lock out power before working on any electrical components.
Before replacing any electronic components verify that the power to the
Rosemount 5081 transmitter is removed. Refer to Section 7: Replacement
Parts for replacement part numbers.
Use the following procedure to replace the display board (12, Figure 6-1).
1. Loosen screw (15) until cover lock (16) disengages from the knurled
surface of circuit end cap (14). Remove circuit end cap.
2. Remove three screws (13) retaining the electronics in place.
3. Lift display board (12) to disconnect from CPU board (11). The display
board is plugged into the CPU board; use care when removing the
display board.
4. Align and plug the replacement display board (12) in the desired
orientation. Carefully plug the display board into the mating connector
on CPU board (11). Ensure the display board is fully seated.
5. Install and tighten all three screws (13).
6. Install circuit end cap (14). Tighten cover lock screw (15) until cover lock
(16) engages knurled surface of circuit end cap (14).
Rosemount 5081FG