Table of Contents
L2t Liquid Level Controller
October 2023
Maintenance
There are no repairable or replaceable parts on the L2t liquid level controller, however the entire controller assembly
can be replaced per the directions below. Contact your
WARNING
Always wear protective clothing, gloves, and eyewear when performing any maintenance operations to avoid personal
injury. To avoid personal injury or property damage caused by the release of pressure or process fluid, observe the
following before starting maintenance:
D Completely shut off the process to isolate the controller/sensor from process pressure or if the application allows,
provide some temporary means of control for the process before taking the controller out of service.
D Provide a means of containing the process fluid before removing any measurement devices from the process.
D Vent any trapped process pressure.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Replacing the Complete Controller Assembly
Refer to figure 12 for key number locations unless otherwise indicated.
1. Disconnect power from any electrical source.
2. Slide the hook end of the zero spring (key 7) over and off the controller end of the displacer rod (key 64) (figure 2).
3. Remove the four controller mounting screws (key 24) and pull the controller straight away from the sensor.
4. Install the new controller assembly on the sensor.
5. Mount with the four screws (key 24).
6. Slide the hook end of the zero spring (key 7) on the controller end of the displacer rod (key 64).
7. Complete signal wiring hookup.
8. Perform the Calibration procedures found on page 12.
24
Emerson sales office
if a replacement Lt2 controller is needed.
Instruction Manual
D104782X012
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