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Flowserve Limitorque L120 Series User Manual

Flowserve Limitorque L120 Series
36 pages
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Experience In Motion
USER INSTRUCTIONS
Installation
Operation
Maintenance
Limitorque
®
Actuation Systems L120 Series
For L120-10 through L120-40
FCD LMENIM1201-05-A4 – 03/18
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Flowserve Limitorque L120 Series Specifications

General IconGeneral
Actuator CompatibilityLimitorque Actuators
Power Supply120/240 VAC, 12/24 VDC
Control Signal4-20 mA
EnclosureNEMA 4X
Ambient Temperature Range-40°F to 140°F (-40°C to 60°C)

Summary

Introduction

User Safety

Details crucial safety precautions for installation, operation, and maintenance to prevent injury and equipment damage.

Installation Instructions

Safety Precautions

Essential safety warnings and precautions before and during actuator installation to prevent hazards.

Torque Switch

Explains the function and setting of the torque switch for actuator protection.

Setting Torque Switch

Step-by-step guide for adjusting the torque switch settings to the desired output torque.

Geared Limit Switch

Introduces the geared limit switch and its importance for travel indication.

Setting Limit Switch

Instructions on how to set the geared limit switch for proper valve travel control.

Operation

Electrical Start-up

Steps for safely starting up the actuator electrically, including checks and phase rotation.

Manual Operation

How to engage and use the manual handwheel operation and the declutch mechanism.

Torque and Travel Limiting

Explains how the geared limit switch and torque switch control valve travel and torque.

Maintenance

Lubrication

General information on actuator lubrication, including sealed cases and thrust bases.

Lubrication Inspection

Procedures for inspecting lubricant levels and quality, especially after storage.

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