Emerson Rosemount 6888C Instruction Manual page 71

Instruction Manual
00809-0100-4891
It turns to align the hole on the back plate of the strut with the calibration gas line.
When the hole and calibration gas line are aligned correctly, the strut slides in the rest
of the way.
8. As the strut insertion nears completion, install the guide rod into the calibration gas
tube to assist in guiding the calibration gas tube through the hole in the end of the
strut.
9. Replace the CAL and REF gas Viton tubes (K).
10.Insert the strut clamp (H) back into the finned housing on the probe.
The opening should be down to allow for clearance for the gas tubes.
11.Carefully install the O-ring (I) back into the groove between the two housings.
A small amount of silicone grease may be used to hold the O-ring in place. Do not use
petroleum based grease.
12.Insert the strut wire harnesses into the housing.
13.Turn the conduit ports of the housing to the CAL and REF gas ports side of the probe
and position the housing on the probe.
14.Install and tighten the four screws (J).
15.Follow the instructions in
electronics into the housing.
16.Follow the instructions in
transmitter into the stack or duct.
8.3.5 Cell replacement
This section covers oxygen sensing cell replacement. Do not attempt to replace the cell
until all other possibilities for poor performance have been considered.
If cell replacement is needed, order the cell replacement kit
The cell replacement kit
corrugated seal, setscrews, socket head cap screws, and anti-seize compound. The items
are carefully packaged to preserve precise surface finishes. Do not remove items from the
packaging until they are ready to be used. Spanner wrenches and hex wrenches needed
for this procedure are part of an available special tools kit
WARNING
BURNS
Use heat-resistant gloves and clothing when removing the probe. Do not attempt to work
on these components until they have cooled to room temperature. Probe components
can be as hot as 300 °C (572 °F). This can cause severe burns.
Disconnect and lock out power before working on any electrical components. There is
voltage up to 240 Vac.
Instruction Manual
Replace transmitter board
Remove and replace probe
(Figure 8-4 on page 72) contains a cell and flange assembly,
Maintenance and service
on page 65 to install the
on page 64 to install the
(Table 9-1 on page 79).
(Table 9-1 on page 79).
July 2018
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