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Ametek Magnetrol B74 User Manual

Ametek Magnetrol B74
28 pages
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Installation and Operating Manual
Liquid
Level
Switches
External Cage
Displacer Actuated
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Ametek Magnetrol B74 Specifications

General IconGeneral
BrandAmetek
ModelMagnetrol B74
CategorySwitch
LanguageEnglish

Summary

Introduction

Principle of Operation

Explains the displacer switch operation using magnetic attraction and a non-magnetic enclosing tube.

Operating Cycle

Details the sequence of events as liquid level rises and falls, actuating the switch mechanism.

Installation

Unpacking and Inspection

Instructions for unpacking the unit, inspecting for damage, and checking contents against packing slip.

Critical Alarm Function

Recommendation for using additional level switches for high-high or low-low level alarms for protection.

Piping

Guidance on proper piping, ensuring straight runs, and providing adequate support for the control unit.

Mounting

Details on mounting the control vertically, within three degrees of tilt, and close to the vessel.

Wiring

Steps for rotating the switch housing and connecting electrical wiring, including safety precautions.

Preventive Maintenance

Maintenance Actions

Key maintenance tasks include keeping the control clean and inspecting mechanisms, terminals, and connections.

What to Avoid

Guidelines on improper practices like leaving covers off or using incorrect lubricants on the mechanism.

Reference Information

Troubleshooting

Provides guidance for diagnosing and resolving operational issues with the switch mechanism or sensing unit.

Agency Approvals

Lists and explains the various agency approvals and certifications applicable to the external cage displacer switches.

Specifications

Details product specifications including actuation levels, dimensions, and material construction for various models.

Replacement Parts

Identifies and lists replacement parts for flanged and sealed cage designs, with part numbers and kits.

Model Numbers

Explains the nomenclature and coding for model numbers, including pressure ratings, materials, and connections.

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