Replacing The Complete Controller Assembly (Rl2E0X00C12) - Emerson Fisher L2e Instruction Manual

Instruction Manual
D103531X012
Assembly
WARNING
Improper assembly of the O­rings, anti-extrusion ring, and backup ring could result in O­ring extrusion and permit leakage
of process fluids. To avoid personal injury or property damage from leaking process fluid, be sure the O­rings,
anti­extrusion ring and backup ring are assembled in the order shown in figure 9.
1. Place the pivot body (key 72) on the displacer rod (key 64) so that it is positioned as shown in figure 9.
2. Apply silicone sealant (key 79) to the O-ring (key 74) and slide onto the displacer rod assembly (key 64) with the
anti­extrusion ring (key 75) and retaining ring (key 76). Be sure the O­ring, anti­extrusion ring, and retaining ring are
in the order shown in figure 9. Slide the pivot base onto the displacer rod so that the knife edges of the pivot body
(key 72) engage the slots in the pivot base (key 73).
3. Apply silicone sealant (key 79) to the O-ring (key 77) and install with the backup ring (key 78) into the groove on the
pivot base (key 73). Be sure the backup ring is on the process pressure side of the O­ring as shown in
figure 9.
4. Insert the displacer rod (key 64) into the vessel side of the sensor connection (key 65).
5. The pivot base must seat in the slots cast in the sensor connection. These slots will be horizontal when the sensor
connection (key 65) is oriented as shown in figure 2.
6. To reduce the possibility of nicking the O­ring key (77) on the pivot base, keep the displacer rod centered in the
sensor connection as much as possible while pushing the pivot base into the sensor connection. Be sure the pivot
base seats in the slots cast in the sensor connection.
7. Slide the spring (key 68) and spacer (key 66) onto the displacer rod and secure with the hex nut (key 67). Fully
tighten the hex nut (key 67).
8. Examine the sensor to ensure that the two pivot knife edges are seated in the pivot base slots.
9. Install the sensor on the vessel.

Replacing the Complete Controller Assembly (RL2E0X00C12)

Refer to figure 7 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)
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 to easy-Drive electric actuator.
8. Perform the Initial Setup (Dry Displacer) and Zero and Span Adjustment procedures found on page 10.
Note
Use with easy­Drive electric actuator after first being used in other high power application is not recommended.
L2e Controller
May 2017
13