Emerson L2 Manual de instrucciones descargar pdf

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Fisherr L2 Liquid Level Controller

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 3.................................

Specifications 3...............................

Education Services 3...........................

Installation 4..................................

Attaching Vertical Displacer 4...................

Attaching Horizontal Displacer 4.................

Attaching the Sensor to the Vessel 5.............

Pressure Connections 5........................

Vent 6.......................................

Changing Controller Action or Mode 6.............

Throttling and On/Off Controllers 6..............

Snap‐Acting Controller 6.......................

Span Adjustment 8.............................

Preliminary Checks 8...........................

Direct‐Acting Throttling Controllers 9............

Reverse‐Acting Throttling Controllers 9...........

Direct‐Acting On/Off and

Snap‐Acting Controllers 9....................

Reverse‐Acting On/Off and

Snap‐Acting Controllers 9....................

Principle of Operation 10........................

Maintenance 11................................

Removing the Controller From the Sensor 11........

Replacing the Sensor O‐Rings 11.................

Disassembly 11............................

Assembly 13..............................

Replacing the Controller Relay 13................

Replacing the Controller Supply Filter 13..........

Figure 1. Fisher L2 Liquid Level Controller

W8418‐1

Related Documents 14..........................

Parts Ordering 14...............................

Parts Kits 14...................................

Parts List 14...................................

Controller 14.................................

Sensor 16....................................

Introduction

Scope of Manual

This instruction manual includes installation, adjustment, maintenance, and parts ordering information for the Fisher

L2 liquid level controller.

Do not install, operate or maintain an L2 Liquid Level Controller without being fully trained and qualified in valve,

actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is

important to carefully read, understand, and follow all contents of this manual, including all safety cautions and

warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office

before proceeding.

Instruction Manual

D103032X012

L2 Controller

September 2013

1 2 3 4 5 6 ... 15 16

Indice de contenidos

Pagina 1 - Introduction

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

Pagina 2

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

Pagina 3 - Educational Services

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

Pagina 4 - Installation

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

Pagina 5 - Pressure Connections

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

Pagina 6 - Snap‐Acting Controller

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

Pagina 7

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

Pagina 8 - Span Adjustment

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

Pagina 9

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

Pagina 10 - Principle of Operation

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

Pagina 11 - Maintenance

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

Pagina 12 - Instruction Manual

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

Pagina 13 - Assembly

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

Pagina 14 - Parts Kits

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

Pagina 15

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

Pagina 16

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