Remove Remote Electronics Housing - Emerson Rosemount OCX8800 Instruction Manual

OCX 8800 Removal and
Installation
April 2017
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9.3.5

Remove Remote Electronics Housing

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Connect the signal cable to O
blocks, Figure 9-4. Connect the heater power cable to the HTR terminal blocks.
Refer to Figure 9-3 and make sure all test gas lines and electrical connectors are
complete.
Install the sensor housing cover.
Restore power to the system. Allow OCX to reach normal operating temperature.
Turn on the test gases at the cylinders and open the instrument air supply valve.
Turn off power to the system.
Shut off the test gases at the cylinders and close the instrument air supply valve,
Figure 9-3.
Disconnect the test gas and instrument air lines from the remote electronics housing.
Remove the cover from the electronics housing to expose the electronics housing
terminal blocks, Figure 9-5.
Disconnect and remove the power leads from the AC power input terminal block.
Remove the ground lead from the ground stud.
Disconnect and remove the O
terminal block.
If used, disconnect and remove the external relay leads from the alarm output relay
terminal block.
Disconnect the signal cable leads from O
from COe and CJC connector (J5),
Disconnect the heater cable leads from the heater power connector (J3).
If moving the electronics housing to another work site, disconnect and remove the
power and signal cables and customer wiring conduits from the housing.
Remove the remote electronics housing from its mounting and move it to a suitable
work area.
and T/C terminal blocks and to the CO and CJC terminal
2
and COe signal leads from the 4-20 mA signal output
2
cell and thermocouple connector (J4), and
2
Figure 9-6.
Instruction Manual
IM-106-880C, OI
Remove Remote Electronics
Housing