Flowserve Limitorque L120-85 User Manual

Experience In Motion
USER INSTRUCTIONS
Installation
Operation
Maintenance
Limitorque
®
L120-85 Actuator
FCD LMENIM1202-03-A4 – 06/15

Flowserve Limitorque L120-85 Specifications

General

Frequency	50/60 Hz
Model	L120-85
Brand	Flowserve Limitorque
Enclosure	NEMA 4/4X
Control	Modulating
Phase	Single or Three-phase

Summary

1 Introduction

1.1 Purpose

Explains manual's scope for installation, maintenance, and parts.

1.2 User Safety

Details precautions to reduce injury risk and equipment damage.

2 Initial Inspection and Storage Instructions

2.1 Inspection and Recording

Steps for initial inspection and recording actuator information.

2.2 Short-Term Storage

Guidelines for storing actuators for periods less than one year.

2.3 Product Identification

Details information found on actuator and motor nameplates.

2.4 Product Description

General description of the L120-85 actuator's function and features.

2.5 Product Features

Lists key features and specifications such as torque and thrust capacity.

3 Actuator Weight

4 Installation Instructions

4.1 Actuator Mounting

Covers mounting for torque-only (Drive 1) and torque/thrust (Drive 2) applications.

4.1.1 Torque Only Applications

Details for fitting the Torque Drive Nut for Drive 1 applications.

4.1.2 Torque and Thrust Applications

Details for fitting the Thrust Base Drive Sleeve for Drive 2 applications.

4.1.3 Mounting Bolts

Specifies recommended mounting bolts, quantities, and tap sizes.

4.1.4 Stem Cover for Rising Stem Applications

Safety and installation overview for stem covers on rising stem actuators.

4.2.1 Initial Electrical Connections

Safety warning before making electrical connections to the actuator.

4.2.2 Motor rotation (phasing) and OPEN/CLOSE Pushbutton Operation

Checking motor rotation and pushbutton operation for correct actuator function.

4.2.3 Three-Phase Motor

Procedure to verify motor rotation direction for three-phase motors.

4.2.4 DC Motor

Procedure to verify motor rotation direction for DC motors.

4.3 Limit Switch Settings

Explains the function and operation of limit switches in the actuator.

4.3.2 Adjustment-General

Tools and general precautions for adjusting limit switches.

4.3.3 Setting the OPEN Limit Switch

Step-by-step instructions for setting the OPEN limit switch.

4.3.4 Setting the CLOSE Limit Switch

Step-by-step instructions for setting the CLOSE limit switch.

4.4 Torque Switch Setting and Wiring

Explains the function and operation of torque switches.

4.4.2 Setting the Torque Switch

Procedure for setting the torque switch for desired torque output.

4.4.3 Balancing the Torque Switch

Procedure for rebalancing the torque switch after removal or installation.

4.4.4 Rewiring the Torque Switch for Non-Standard Drive Sleeve Rotation

Modifications for wiring the torque switch for opposite drive sleeve rotation.

4.5 Position Indication

Procedure for setting the local position indicator (MDPI).

4.5.2 Remote Position Indication

Setup and calibration for remote position indication systems.

4.5.3 Setting the Potentiometer

Procedure to calibrate the potentiometer for remote valve position indication.

5 Operation

5.1 Description of Motor Operation

Describes how the motor operates the actuator mechanism.

5.2 Description of Manual Operation

Describes manual operation using the handwheel and declutch lever.

5.3 Electrical Start-up Procedure

Steps for electrically starting up the actuator after installation.

6 Maintenance

6.1 Lubrication

General information and guidelines for actuator lubrication.

6.1.1 Initial Inspection

Initial inspection steps for proper actuator lubrication.

6.1.2 Frequency

Guidance on determining the frequency for lubrication inspections.

6.1.3 Routine Inspection

Key considerations for routine lubrication inspections.

6.1.4 Factory Lubricants

Specifies lubricants applied at the factory for the actuator.

6.1.5 Minimum Lubricant Qualities Required

Minimum quality requirements for lubricants used in the actuator.

7 Disassembly

7.1 Removal From Valve

Procedures for safely removing the actuator from the valve.

7.2 Open Electrical Compartment & Disconnect Motor

Steps to access the electrical compartment and disconnect the motor.

7.3 Remove Control Wiring

Procedure for removing control wiring from the actuator.

7.4 Remove Limit and Torque Switch

Steps for removing the limit and torque switch assemblies.

7.5 Remove Motor Assembly

Procedure for removing the motor assembly from the actuator.

7.6 Remove Handwheel

Steps to remove the handwheel and associated components.

7.7 Remove Handwheel Shaft Assembly

Procedure for removing the handwheel shaft assembly.

7.8 Remove Declutch Lever Assembly

Steps to remove the declutch lever assembly.

7.9 Remove Clutch Assembly

Procedure for removing the clutch assembly.

7.10 Remove Clutch Pinion Assembly

Steps to remove the clutch pinion assembly.

7.11 Remove Worm Shaft Assembly

Procedure for removing the worm shaft assembly.

7.12 Remove & Disassemble Thrust Base

Steps to remove and disassemble the thrust base assembly for Drive 2.

8 Assembly

8.1 Handwheel Shaft Assembly and Shimming

Procedure for re-shimming the handwheel shaft assembly.

8.2 Verifying Handwheel Operation

Test handwheel operation after assembly to ensure proper engagement.

8.3 Thrust Base Assembly and Shimming

Procedure for assembling and shimming the thrust base.

9 Troubleshooting

9.1 Typical Wiring Diagram

Presents a typical wiring diagram for three-phase actuators with control packages.

10 How to Order Parts

10.1 L120-85 Illustrated Parts Breakdown

Provides illustrated parts breakdown for various actuator components.

10.2 L120-85 Parts List

Lists all parts with their descriptions and quantities.

11 EC Declaration of Conformity

Application of Council Directives

Lists applicable council directives for the product.

Standards to which Conformity is Declared

Lists standards to which the product's conformity is declared.