Emerson L2 Manuel d'instructions

www.Fisher.comFisherr L2 Liquid Level ControllerContentsIntroduction 1...Scope of Manual 1...D

Instruction ManualD103032X012L2 ControllerSeptember 201310Principle of OperationThe operation of L2 controllers in combination with the sensor is base

Instruction ManualD103032X012L2 ControllerSeptember 201311MaintenanceParts are subject to normal wear and must be inspected periodically and replaced

Instruction ManualD103032X012L2 ControllerSeptember 2013124. Slide the pivot base (key 73), retaining ring (key 76), anti‐extrusion ring (key 75), an

Instruction ManualD103032X012L2 ControllerSeptember 201313Assembly WARNINGImproper assembly of the O‐rings, anti‐extrusion ring, and backup ring coul

Instruction ManualD103032X012L2 ControllerSeptember 201314Related DocumentsD Converting a Threaded NPT Connection to a Flange Connection—Supplement to

Instruction ManualD103032X012L2 ControllerSeptember 201315Figure 8. Fisher L2 Liquid Level ControllersVIEW A‐ASNAP‐ACTING CONTROLLERTHROTTLING AND ON/

Instruction ManualD103032X012L2 ControllerSeptember 201316Key Description Part Number 6 Span Lever Assembly, stainless steel 7 Shoulder Screw, stainle

Instruction ManualD103032X012L2 ControllerSeptember 20132Table 1. SpecificationsAvailable ConfigurationsController: Snap‐acting or throttlingSensor: D

Instruction ManualD103032X012L2 ControllerSeptember 20133Table 1. Specifications (continued)Displacer Material and Sensor TemperatureLimits(8)PVC Disp

Instruction ManualD103032X012L2 ControllerSeptember 20134Installation WARNINGAlways wear protective clothing, gloves, and eyewear when performing any

Instruction ManualD103032X012L2 ControllerSeptember 20135Attaching the Sensor to the VesselInsert the displacer end of the controller‐sensor assembly

Instruction ManualD103032X012L2 ControllerSeptember 20136Vent WARNINGIf a flammable or hazardous gas is to be used as the supply pressure medium, per

Instruction ManualD103032X012L2 ControllerSeptember 20137Figure 3. Fisher L2 Throttling and On/Off Controller Switch Positions for Changing Action and

Instruction ManualD103032X012L2 ControllerSeptember 20138Span AdjustmentExcept where indicated, key numbers referenced in the following procedures are

Instruction ManualD103032X012L2 ControllerSeptember 201395. Check figures 3 and 4 for correct control action and control mode.6. Adjust the relay ad