L2E Initial Setup (Dry Displacer); L2E Zero And Span Adjustment (Wet Displacer) - Emerson Fisher L2e Instruction Manual

Instruction Manual
D103531X012

L2e Initial Setup (Dry Displacer)

Refer to figure 7.
1. Apply power to the L2e Switch assembly.
2. Move Span to minimum setting.
3. If the switch is already in the state that opens the dump valve, skip to step 4. Otherwise, (e.g., lever B is resting on
its travel stop), first move the plunger away from the switch by moving the Zero adjustment until the switch just
changes to the state required to open the dump valve.
4. Slowly bring the plunger towards the switch by moving the Zero adjustment until the switch changes to the state
required to close the dump valve.

L2e Zero and Span Adjustment (Wet Displacer)

After initial setup (dry displacer) is complete,
1. Enable process flow into the vessel.
2. Move Zero and Span Adjustment for desired liquid zero position and level DG.
3. Tighten the Zero Adjustment hex nut (key 5), shown in figure 10, to lock the Zero setting.
Figure 7. Initial Setup
ZERO
ADJUSTMENT
SPAN ADJUSTMENT
 Â
CAUTION: FACTORY SET
— DO NOT ADJUST —
MOVE
ZERO
ADJUSTMENT
MOVE
SPAN
ADJUSTMENT
L2e Controller
June 2022
LEVEL HEIGHT
RAISE
LOWER
LEVEL
DIFFERENTIAL GAP
INCREASE
DECREASE
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