Flowserve LY User Manual

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USER INSTRUCTIONS

Limitorque LY Series: LY 1001, LY 2001 and LY 3001

FCD LMENIM1501-00 – 11/11

100

L i m i t o r q u e

Installation

Operation

Maintenance

Experience In Motion

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Contents

1 Introduction 5

1.1 Purpose 5

1.2 User Safety 5 2 Product Capabilities and Features 6 3 Initial Inspection and Storage Instructions 7

3.1 Product Identiﬁcation 7

3.2 Inspection and Recording 8

3.3 Storage Procedures 8

3.3.1 Short-Term Storage (less than 1 year) 8

3.3.2 Long-Term Storage (1 to 5 years) 8 4 Actuator Weights 10 5 Installation Instructions 11

5.1 Safety Precautions 11

5.2 Safety Practices 12

5.3 Initial Actuator Preparation 12

5.4 Installation Overview 14

5.5 Torques Switch Settings 18

5.6 Rewiring the Torque Switch for Non-Standard Drive Sleeve Rotation 18

5.7 Limit Switch and Mechanical Stop Settings 19

5.8 Setting the Limit Switches 19

5.8.1 Setting the CLOSED Limit Switch 19

5.8.2 Setting the OPEN Limit Switch 21

5.9 Mechanical Stops 22

5.9.1 Setting the CLOSED Mechanical Stop on the LY 1001 22

5.9.2 Setting the CLOSED Mechanical Stop on the LY 2001/3001 23

5.9.3 Setting the OPEN Mechanical Stop on the LY 1001 24

5.9.4 Setting the OPEN Mechanical Stop on the LY 2001/3001 24

5.10 Setting the MDPI (Mechanical Dial Position Indicator) 24

5.10.1 Setting the Potentiometer 25 6 Operation 27

6.1 Typical LY 1001 Operation 27

6.2 Verify Correct Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton Operation 27

6.2.1 Three-Phase Motor 28

6.2.2 Single-Phase Motor 32

6.2.3 DC Motor 36

6.3 Electrical Startup 36

6.4 Manual Operation 37

6.5 Motor Operation 37

7 Maintenance 45

7.1 Lubrication 45

7.1.1 Lubrication Inspection 45

7.1.2 Factory Lubricant 46

7.2 Minimum Lubricant Qualities Required 46

7.3 Disassembly and Reassembly 46

7.3.1 LY 1001 Disassembly 46

7.3.2 LY 1001 Reassembly 48

7.3.3 LY 2001/3001 Disassembly 50

7.3.4 LY 2001/3001 Reassembly 52

7.4 Troubleshooting 55 8 Parts List 58 9 How to Order Parts 61 10 Regulatory Information 62

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Limitorque LY Series: LY1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figures

Figure 2.1 – LY Actuator 6 Figure 3.1 – LY Nameplate 7 Figure 5.1 – Torque Nut and Retaining Drive Ring Removal from an LY 1001 12 Figure 5.2 – LY Keyway Locations 13 Figure 5.3 – LY 1001, 2001, and 3001 Torque Drive Nut Orientation 15 Figure 5.4 – Removing Control Cover and Conduit Pipe Plugs 16 Figure 5.5 – Grounding Lug Location 17 Figure 5.6 – Reversing Torque Switch Wiring 18 Figure 5.7 – Limit Switch Setting Nut 20 Figure 5.8 – Setting CLOSE Limit Cam 20 Figure 5.9 – Setting OPEN Limit Cam 21 Figure 5.10 – Mechanical Stop Set Screw Adjusted to Torque Nut Contact Point on LY 1001 22 Figure 5.11 – Mechanical Stop Set Screw Adjusted to Torque Nut Contact Point on LY 2001 and 3001 23 Figure 5.12 – Aligning MDPI with Dial Window Retaining Plate 25 Figure 5.13 – Potentiometer Calibration Components 26 Figure 6.1 – Standard Actuator/Three-Phase 29 Figure 6.2 – Three-Phase with Control Package 30 Figure 6.3 – Standard Actuator/Single-Phase 33 Figure 6.4 – Single-Phase with Control Package 34 Figure 6.5 – LY 1001 Cover and Associated Parts 38 Figure 6.6 – LY 1001 Top Plate and Associated Parts 39 Figure 6.7 – LY 1001 Housing and Associated Parts 40 Figure 6.8 – LY 2001/3001 Cover and Associated Parts 41 Figure 6.9 – LY 2001/3001 Top Plate and Associated Parts 42 Figure 6.10 – LY 2001/3001 Housing and Associated Parts 43 Figure 6.11 – LY 3001 Handwheel Assembly 44 Figure 7.1 – LY 1001 Declutch Return Spring Installation Position 48 Figure 7.2– LY 2001/3001 Declutch Return Spring Installation Position 52

Tables

Table 4.1 – Actuator Weights 10 Table 5.1 – Mounting Base Dimensions 13 Table 5.2 – LY Actuator/Mounting Base Tap Sizes 16 Table 5.3 – Control Cover and Conduit Pipe Plug Hardware 16 Table 5.4 – LY Control Cover and Integral Control Cover Bolt Sizes and Torques 17 Table 5.5 – Mechanical Stop Set Screws 22 Table 5.6 – Mechanical Stop and Locknut Screw Sizes 23 Table 8.1 – LY 1001 Parts List 58 Table 8.2 – LY 2001/3001 Parts List 59

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Introduction

1.1 Purpose

This Installation and Maintenance Manual explains how to install and maintain LY actuators. Information on installation, disassembly, lubrication, and parts is provided.

1.2 User Safety

Safety notices in this manual detail precautions the user must take to reduce the risk of personal injury and damage to the equipment. The user must read and be familiar with these instructions before attempting installation, operation, or maintenance. Failure to observe these precautions could result in serious bodily injury, damage to the equipment, warranty void, or operational difﬁculty.

Safety notices are presented in this manual in three forms:

c WARNING: Refers to personal safety. Alerts the user to potential danger. Failure to follow

warning notices could result in personal injury or death.

a CAUTION: Directs the user’s attention to general precautions that, if not followed, could result in

personal injury and/or equipment damage.

NOTE: Highlights information critical to the user’s understanding of the actuator’s installation and operation.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Product Capabilities and Features

The LY actuator controls the opening and closing travel of the valve and limits torque through the torque switches provided. As a result, all valve-operating parts are protected from overload, improper seating, and foreign obstructions.

LY actuators may be mounted on any size valve in almost any position or location.

Microprocessor-based control and monitoring devices are available for installation on your actuator. Contact your local Limitorque distributor or Limitorque sales ofﬁce for further information.

Figure 2.1 – LY Actuator (LY 1001 shown)

100

L i m i t o r q u e

Position Indication Window

Control Cover

Housing

Conduit Adapter

Handwheel typically clockwise turn to CLOSE and counterclockwise turn to OPEN

Declutch Lever

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Initial Inspection and Storage Instructions

c WARNING: Read this Installation and Maintenance Manual carefully and completely before

attempting to store the actuator. Be aware of electrical hazards within the actuator and highpressure hazards of the attached valve or other actuated device when installing or performing maintenance on your LY actuator.

3.1 Product Identiﬁcation

The actuator unit nameplate is located on the side of the unit opposite the conduit entry. The nameplate contains the following information:

• Limitorque name

• Point of Manufacture

• Unit Size

• Serial Number

• Order Number

• Electrical Power Supply

• Operating Time (seconds)

• Motor Full Load Amperage

• Connection diagram

Figure 3.1 – LY Nameplate (Reference Drawing 61-682-0108)

LETTERS TO BE LASER ETCHED (SILVER)

LUBE

TAGGING

LYORDER SERIAL VOLT OP. TIME

Limitorque

Lynchburg, VA. USA

PH FLA

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

3.2 Inspection and Recording

Upon receipt of the actuator, inspect the condition of the equipment and record nameplate information as follows:

1. Carefully remove actuator from shipping carton or skid. Thoroughly examine the equipment for any physical damage that may have occurred during shipment. If damaged, immediately report the damage to the transport company.

2. Record the unit nameplate information for future reference, i.e., ordering parts, and obtaining further information.

3.3 Storage Procedures

NOTE: The following are Flowserve’s recommended storage procedures to retain maximum product integrity during short-term and long-term storage. Failure to comply with recommended procedures will void the warranty.

3.3.1 Short-Term Storage (less than 1 year)

Actuators should be stored in a clean, dry, protected warehouse, free from excessive vibration and rapid temperature changes.

Preparation

1. Connect internal heaters, if supplied.

2. Replace all plastic caps or plugs with metal pipe plugs.

3. Ensure all covers are tight.

Outdoor Storage

If actuators must be stored outdoors, they must be stored off the ground, high enough to prevent being immersed in water or buried in snow.

LY Storage Orientation

• Store with the Control Compartment Cover (Limit Switch compartment) facing upward.

• Do not store units on their side.

3.3.2 Long-Term Storage (1 to 5 years)

Actuators should be stored in a clean, dry, protected warehouse, free from excessive vibration and rapid temperature changes.

NOTE: During long-term storage, the maximum source of equipment deterioration anticipated is from possible condensation within the actuator enclosure. This condensation may occur with rapid temperature changes in the storage environment. If reliable means are not available to prevent rapid temperature changes, a heat source should be added in the electrical enclosure during storage. Consult the Limitorque Customer Service Department for further information.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Preparation

1. Connect internal heaters, if supplied.

2. Replace all plastic caps or plugs with metal pipe plugs.

3. Ensure all covers are tight.

LY Storage Orientation

1. Store with the Control Compartment Cover (Limit Switch compartment) facing upward. Do not store units on their side.

2. Store off the ﬂoor on suitable skids and cover with an unsealed dust cover leaving the bottom open and air holes in the side.

Storage Inspection and Correction

1. Perform a semi-annual visual inspection. A minimum inspection should include checking the following:

 •Packaging  •Plugs

 •Covers  •Dryness

 •Cleanliness  •Heatsource(ifused)forproperfunctioning

2. Record and correct deﬁciencies noted during inspection.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Actuator Weights

The approximate LY actuator weights are provided below.

Table 4.1 – Unit Weights

Unit Size Control Types

NCU 40 20

LY 1001

LY 2001

LY 3001

BIC 75 34 UEC 90 41 NCU 100 45

BIC 110 50 UEC 144 65 NCU 105 48

BIC 130 59 UEC 149 68

Weight

lb. kg

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Installation Instructions

5.1 Safety Precautions

c WARNING: Read this Installation and Maintenance Manual carefully and completely before

attempting to install, operate, or troubleshoot the Limitorque actuator.

c WARNING: Be aware of electrical hazards. Turn off incoming power before working on the

actuator and before opening the switch compartment.

c WARNING: Potential HIGH PRESSURE vessel — be aware of high-pressure hazards associated

with the attached valve or other actuated device when installing or performing maintenance on the actuator. Do not remove the actuator mounting bolts from the valve or actuated device unless the valve or device stem is secured or there is no pressure in the line.

c WARNING: For maintenance and/or disassembly of the actuator while installed on the valve,

ensure that the actuator is not under thrust or torque load. If the valve must be left in service, the valve stem must be locked in such a way as to prevent any movement of the valve stem.

c WARNING: Do not manually operate the actuator with devices other than the installed hand-

wheel and declutch lever. Using force beyond the ratings of the actuator and/or using additive force devices such as cheater bars, wheel wrenches, pipe wrenches, or other devices on the actuator handwheel or declutch lever may cause serious personal injury and/or damage to the actuator and valve.

c WARNING: Do not exceed any design limitations or make modiﬁcations to this equipment

without ﬁrst consulting Limitorque.

c WARNING: Actuators equipped with electrical devices (motors, controls) requiring ﬁeld wiring

must be wired and checked for proper operation by a qualiﬁed tradesman.

c WARNING: Use of the product must be suspended any time it fails to operate properly.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

a CAUTION: Do not operate the valve under motor operation without ﬁrst setting or checking the

limit switch setting and motor direction.

a CAUTION: Do not force the declutch lever into the motor operation position. The lever returns to

this position automatically when the motor is energized.

a CAUTION: Do not depress the declutch lever during motor operation to stop valve travel.

a CAUTION: Do not use replacement parts that are not genuine Flowserve Limitorque parts, as

serious personal injury and/or damage to the actuator and valve may result.

a CAUTION: Do not lift the actuator by handwheel.

5.2 Safety Practices

The following check points should be performed to maintain safe operation of the LY actuator:

• Keep the switch compartment clean and dry.

• Keep the valve stem clean and lubricated.

• Set up a periodic operating schedule for infrequently used valves.

• Verify all actuator wiring is in accordance with the applicable wiring diagram.

• Carefully check for correct motor rotation direction. If the valve closes when open button is pushed,

the motor leads may have to be reversed.

5.3 Initial Actuator Preparation

Piece numbers refer to Figure 5.1.

1. Remove the Retaining Drive Ring (piece #165 or #109) and Torque Nut (piece #32) from actuator.

Figure 5.1 – Torque Nut and Retaining Drive Ring Removal from an LY 1001

L i m i t o r q u e

#32 Torque Nut

#165 (LY 1001) #109 (LY 2001/3001) Torque Nut Retaining Drive Ring

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

2. If Torque Nut has been bored and keywayed by Limitorque, verify dimensions and keyway location for proper compatibility with the valve stem.

3. If Torque Nut has not been bored and keywayed by Limitorque, it is provided solid (blank) to allow customer to custom key and bore up to the maximum permissible sizes as listed in Table 5.1.

Table 5.1 – Mounting Base Dimensions

Unit Type and Size

LY 1001 1-1/8, dia (28 dia) 1/4 x 1/8, (6 x 3)

LY 2001/3001 2-3/8, dia (60 dia) 5/8 x 1/16 (15 x 7.5)

NOTE: Before keywaying, match the Torque Nut with the Valve Stem to ensure proper keyway location. Use the Keyway Index Mark (LY 1001 only) for locating appropriate keyway location.

Maximum Bore

inch (mm)

Maximum Keyway

inch (mm)

Figure 5.2 – LY Keyway Locations

LY 2001/3001 Keyway Location Positions

LY 1001 Keyway

Location Marks

To rque Nut

Stop Lug

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

5.4 Installation Overview

a CAUTION: Be sure to complete each step of the installation overview before electrically

operating your actuator. If the actuator is already mounted to a valve from the manufacturer, verify that the actuator is mounted according to the following overview. Failure to follow the installation procedures could result in personal injury and/or improper operation and could cause damage to the equipment.

1. Mount Torque Nut (piece #32) in the actuator as shown in Figure 5.3 with the following alignment:

A. For LY 1001 – Stop Lugs facing the Actuator Mounting Adapter with index lines positioned to

face the Mechanical Stop Screws.

B. For LY 2001/3001 – Torque Nut axially aligned on the Drive Sleeve so that the bottom of the nut

is positioned inside the Actuator Mounting Base.

2. Insert the Retaining Drive Ring (piece #165 for LY 1001, piece #109 for LY 2001/3001) on the Torque Nut (piece #32) to hold the Torque Nut in place in the actuator.

3. Mount the LY actuator on the mounting ﬂange of the valve or other actuated equipment. Highstrength (minimum SAE-Grade 5 120,000 psi tensile strength) hex head or socket head cap screws with lockwashers are recommended. The actuator mounting tap quantities and thread sizes are detailed in Table 5.2.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 5.3 – LY 1001, 2001, and 3001 Torque Drive Nut Orientation

#32 Torque Nut

CCW to

Open

Torque Nut Stop Lugs

Actuator Mounting Base

Valve Stem

Actuator Mounting

LY 1001

Adapter

Mechanical Stop

Setscrews

Closed

Open

Stop Lug index lines facing Mechanical Stop Screws

Top view of LY 1001 Mechanical Stops

CCW to

Open

LY 2001/3001

Actuator Mounting Base

#32 Torque

Nut

Valve Stem

Actuator Mounting Adapter

Top view of LY

2001/3001 Mechanical Stops

Stop Pins located within actuator housing on the Drive Sleeve Gear

Mechanical Stop Screws

Closed

Open

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Table 5.2 – LY Actuator/Mounting Base Tap Sizes

Unit Type

and Size

LY 1001 8

LY 2001/3001 8

Qty

English Metric

3/8-16 x

0.71 deep

5/8-11 x

1.26 deep

Tap Size

M10 x 1.5 mm x 25 mm deep

(Complies with F10 ISO

mounting ﬂange criteria)

M16 x 2 mm x 35 mm deep

(Complies with F10 ISO

mounting ﬂange criteria)

NOTE: Flowserve has supplied eight taps for the LY 1001, LY 2001, and LY 3001 in English/Metric units to provide ﬂexibility in mounting arrangements. A minimum of four securing bolts is required to properly secure and retain torque reaction on these units.

c WARNING: HAZARDOUS VOLTAGE. No electrical power should be connected until all wiring

and limit switch adjustments have been completed. Once power is supplied to unit, exercise caution if cover is not installed.

4. Remove the Control Cover (piece #3) and Conduit Pipe Plugs (piece #144).

Figure 5.4 – Removing Control Cover and Conduit Pipe Plugs

L i mi to r q u e

#3 Control Cover

#144 Conduit Pipe Plugs

Table 5.3 – Control Cover and Conduit Pipe Plug Hardware

Unit Type

LY 1001

(WP & XP)

LY 2001/3001 8

Control Cover Conduit Pipe Plug

Quantity Size Quantity Size

6 M8 x 40 mm 2

M12 x 50 mm (WP)

M12 x 55 mm (XP)

1" NPT Socket

Hex Head

1" NPT Socket

Hex Head

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

5. Adjust the Limit Switches, Mechanical Stops, and Position Indication Dial following the procedures detailed in Section 5.7, Limit Switch and Mechanical Stop Settings.

6. Connect the wiring to the terminal strips provided on the actuator. Refer to the wiring diagram supplied with the actuator. “Fork-type” terminal connections are recommended.

7. Insert a Conduit Pipe Plug in the unused conduit entrance if the wiring that enters the actuator uses only one conduit entrance.

NOTE:

a. Explosionproof actuators require approved “sealing ﬁttings” installed in accordance with the

National Electric Code.

b. Submersible actuators require an approved “sealing ﬁtting” in order to keep water from entering

the actuator.

8. Attach grounding wire to Grounding Lug (piece #141).

9. Verify motor rotation direction to ensure that the limit switch is wired properly for intended operation. (See Section 6.2, Verify Correct Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton Operation.)

Figure 5.5 – Grounding Lug Location

#141 Grounding Lug

To earth ground

10. Reinstall Control Cover (piece #3).

NOTE: Submersible actuators require tightening the Control Cover Bolts and Integral Control Cover Bolts to a speciﬁed torque in order to maintain submersibility. (See Table 5.4 for speciﬁc torque settings.)

Table 5.4 – LY Control Cover and Integral Control Cover Bolt Sizes and Torques

Unit Type Control Cover Integral Compartment

LY 1001 M8 - 10 to 15 ft-lb M10 - 15 to 20 ft-lb

LY 2001/3001 M12 - 20 to 25 ft-lb M10 - 15 to 20 ft-lb

Unit is now ready for electrical operation.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

5.5 Torque Switch Settings

c WARNING: HAZARDOUS VOLTAGE. Turn power OFF before opening the Electrical Compartment

Cover or making any adjustments to the Torque Switch.

a CAUTION: Installing or adjusting the Torque Switch with the actuator in a loaded condition will

result in loss of torque protection. Before adjusting or installing the Torque Switch, place the actuator in MANUAL mode and turn the Handwheel in the direction necessary to release the torque load on the Wormshaft Assembly.

NOTE: Removal or modiﬁcation of the Torque Switch Limiter Plate will void the actuator warranty. Do not exceed the torque setting indicated by the Torque Switch Limiter Plate without contacting the Limitorque Service Department.

The LY unit is equipped with a do W to MEDIUM or HIGH by adjusting the Torque Switch Adjustment Screw unless it is limited by the Limiter Plate. (See Figure 5.6 for Torque Switch Adjustment Screw location.)

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

a CAUTION: Double-check the wiring diagram to verify that the Torque Switch is wired appro-

priately for the application. The Torque Switch will not protect the valve from over-torque if the Torque Switch is not wired properly for the application.

LY series actuators are typically supplied with a CCW Drive Sleeve rotation to open a valve. The Torque Switch is marked OPEN (CCW) and CLOSE (CW) based upon CW Drive Sleeve rotation to close the valve. The Mechanical Dial Position Indicator (MDPI) is typically mounted for CW rotation to indicate the CLOSED position. If opposite Drive Sleeve rotation is required (CCW to close a valve), the following Torque Switch modiﬁcations are required.

1. Turn all power to the actuator OFF.

2. Reverse the ID Limiter Plate.

3. Interchange OPEN Torque Switch wires 18 and 18C with CLOSED wires 17 and 17C. (Refer to the wiring diagram for other Torque Switch wiring conﬁgurations.)

Figure 5.6 – Reversing Torque Switch Wiring

Typical CLOSE-circuit microswitch (17 &17C)

Typical OPEN-circuit microswitch (18 &18C)

LY-1

OPEN

H M L

ID-Limiter Plate

Torque Switch Adjustment Screws

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

4. Remove the MDPI Plate and ﬂip over for indication of CCW rotation to the valve’s closed position. (See Figure 5.12 for MDPI Dial Plate.)

5.7 Limit Switch and Mechanical Stop Settings

The Limit Switch and Mechanical Stops are not preset at the factory, but must be set after mounting on the associated equipment. If the actuator has been shipped already installed on a valve, the actuator should have the Limit Switch and Mechanical Stops set for your application. If the actuator is not already installed on a valve or needs resetting, use the following instructions to make the appropriate settings.

The following instructions for setting the Limit Switches and Mechanical Stops are based on the typical orientation for most actuator applications. Consult the applicable wiring diagram located in the Control Compartment for the speciﬁc Limit Switch development.

NOTE: While making Limit Switch settings, remember that the Limit Cams rotate in the same direction as the valve stem.

5.8 Setting the Limit Switches

c WARNING: Do not manually operate actuator with devices other than installed Handwheel and

Declutch Lever. Using additive force devices (cheater bars, wheel wrenches, pipe wrenches or other devices of this nature) on the actuator Handwheel or Declutch Lever may cause serious personal injury and/or damage to the actuator or valve.

c WARNING: HAZARDOUS VOLTAGE. Make sure all power is disconnected before making the

following settings.

5.8.1 Setting the CLOSED Limit Switch

1. Put the actuator in MANUAL operation: move the Declutch Lever in the direction of the arrow on the lever until the Declutch Lever locks in place. If Declutch Lever is difﬁcult to move, see Section 6.4, Manual Operation for instructions to release the Declutch Lever.

2. Turn the Handwheel CW to move the valve to the full CLOSE position.

NOTE: Most applications require turning the Handwheel CW to obtain the full CLOSE position and

CCW to obtain full OPEN position. The Drive Sleeves and Limit Cams also rotate in CW rotation to the CLOSE position and CCW to the OPEN position. If the application is conﬁgured differently, the descriptions in this manual will describe rotation directions opposite your application.

3. Loosen Setting Nut (piece #7-10) located at the top of the switch bracket approximately ¾ turn.

NOTE: When setting the Limit Cams by rotating to the trip point as described in Step 4, be careful

not to move more than one cam at a time. Limit Cams that have already been set are not secure until Setting Nut (piece #7-10) is retightened.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 5.7 – Limit Switch Setting Nut

100

OPEN

PERCENT

Limitorque

7-10

Standard OPEN Microswitch location

Standard CLOSE Microswitch location

4. Rotate the CLOSE Limit Cam CW through the high side to the trip point until the Switch Plunger is released. This causes the N.O. (normally open) contact to open.

NOTE: There will be no electrical continuity at the trip point when measuring with an ohmmeter

between the common lead and the N.O. lead. You may also hear a faint “click” at the trip point.

NOTE: During actuator operation, when the Switch Plunger trips, the N.O. contact is released,

causing the Limit Switch to stop the actuator in the CLOSED position.

Figure 5.8 – Setting CLOSE Limit Cam

Tr ip Point position (“click”)

CLOSE Limit Cam

Switch Plunger

COM

CLOSE microswitch position when valve has reached the CLOSED position and microswitch has tripped

CLOSE Limit Cam

High Side

Rotate CW to reach CLOSE Tr ip Point

COM

CLOSE microswitch position while valve is traveling from OPEN toward the CLOSED position

Switch Plunger

High Side

5. Retighten Setting Nut (piece #7-10).

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

High Side

5.8.2 Setting the OPEN Limit Switch

NOTE: When setting the OPEN Limit Switch, be careful not to rotate the CLOSE Limit Cam; rotating it will change the adjustments you previously made on the CLOSE Limit Switch.

1. Put the actuator into MANUAL operation by moving the Declutch Lever in the direction of the arrow on the lever until the Declutch Lever locks in place. If Declutch Lever is difﬁcult to move, see Section 6.4, Manual Operation for instructions to release the Declutch Lever.

2. Turn the Handwheel to move the valve to the full OPEN position.

NOTE: Most applications require turning the Handwheel CCW to obtain the full OPEN position. The

Drive Sleeve and Limit Cams also rotate in CCW rotation to the OPEN position. If your application is conﬁgured differently, keep in mind the descriptions in this manual will describe rotation directions opposite of your application.

3. Loosen Setting Nut (piece #7-10) located at the top of the switch bracket. (See Figure 5.7.)

4. Rotate the OPEN Limit Cam CCW through the high side to the trip point until the Switch Plunger is released. This causes the N.O. contact to open. There will be no electrical continuity at the trip point when measuring with an ohmmeter between the common lead and the N.O. lead; you may also hear a faint “click” at the trip point.

NOTE: During actuator operation, when the Switch Plunger trips, the N.O. contact is released,

causing the Limit Switch to stop the actuator in the OPEN position.

Figure 5.9 – Setting OPEN Limit Cam

OPEN Tr ip Point position (“click”)

COM

High Side

OPEN Limit Cam

Rotate CCW to reach OPEN Tr ip Point

Switch Plunger

COM

OPEN microswitch

OPEN Limit Cam

position while valve is traveling from CLOSED toward the OPEN position

5. Retighten Setting Nut (piece #7-10).

Switch Plunger

OPEN microswitch position while valve has reached the OPEN position and microswitch has tripped

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Mechanical Stop

5.9 Mechanical Stops

5.9.1 Setting the CLOSED Mechanical Stop on the LY 1001

Table 5.5 – Mechanical Stop Set Screws

Unit Type Mechanical Stop Set Screw Size Set Screw Size

LY 1001 3/8-16 x 1.25" 3/8-16 x 0.375"

Piece numbers refer to Figure 5.10.

1. Set CLOSE Mechanical Stop Set Screw (piece #58) by removing the Set Screw (piece #59).

2. Using the Handwheel, turn the valve to the CLOSE position. Make sure the valve is fully seated before setting the mechanical stop.

3. Rotate Mechanical Stop Set Screw (piece #58) in the CW direction until contact with the Torque Nut (piece #32) occurs. (See Figure 5.9.)

4. Back-off Mechanical Stop Set Screw (CCW direction) approximately 1½ turns.

5. Reinstall Set Screw (piece #59).

6. Manually operate the actuator through the close limit to assure setting is correct.

NOTE: The Mechanical Stops are intended to protect the equipment from overtravel if a Limit Switch

fails. The valve should not torque-out against the Mechanical Stop Set Screw during normal OPEN/ CLOSE cycles.

Figure 5.10 – Mechanical Stop Set Screw Adjusted to Torque Nut Contact Point on LY 1001

Set Screws

#59 Set Screw

#58 Mechanical Stop Set Screw

#32 Torque Nut

OPEN CLOSED

Torque Nut & Mechanical Stop Screw positioned at contact point

CCW to Open

LY 1001 Bottom View

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Mechanical Stop Screw

5.9.2 Setting the CLOSED Mechanical Stop on the LY 2001/3001

Table 5.6 – Mechanical Stop and Locknut Screw Sizes

Unit Type Stop Screw Size Locking Nut Size

LY 2001/3001 5/8-16 x 3" 5/8-11

All piece numbers refer to Figure 5.11.

1. Set CLOSE Mechanical Stop Screws (piece #58) (Hex Head Cap Screw) by loosening Locking Nut (piece #59) (Hex Head Nut).

2. Using the Handwheel, turn the valve to the CLOSE position. Make sure the valve is fully seated before setting the mechanical stop.

3. Rotate Mechanical Stop Screw (piece #58) in the CW direction until contact with the Stop Pin (piece #28) occurs.

4. Back-off Mechanical Stop Screw (CCW direction) approximately 1½ turns.

5. Retighten Locking Nut.

6. Manually operate the actuator through the close limit to assure setting is correct.

NOTE: The Mechanical Stops are intended to protect the equipment from overtravel if a Limit Switch

fails. The valve should not torque-out against the Mechanical Stop Screw during normal OPEN/ CLOSE cycles.

Figure 5.11 – Mechanical Stop Set Screw Adjusted to Torque Drive Nut Contact Point on LY 2001 and 3001

CLOSED OPEN

#58 Mechanical Stop Screw

#59 Locking Nut

#32 Torque Nut

#28 Stop Pin and Mechanical Stop Screw positioned at contact point

CCW to Open

LY 2001/3001 Top View

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

5.9.3 Setting the OPEN Mechanical Stop on the LY 1001

Piece numbers refer to Figure 5.10.

1. With the valve in the full OPEN position, set OPEN Mechanical Stop Set Screw (piece #58) by removing the Set Screw (piece #59). (See Figure 5.9 for orientation.)

2. Using the Handwheel, turn the valve to the OPEN position. Verify the valve is fully open before setting the Mechanical Stop Set Screw.

3. Rotate Mechanical Stop Set Screw (piece #58) in the CW direction until contact with the Torque Nut (piece #32) occurs.

4. Back-off Mechanical Stop Set Screw (CCW direction) approximately 1½ turns.

5. Reinstall Set Screw (piece #59).

6. Manually operate the actuator through the open limit to assure setting is correct.

5.9.4 Setting the OPEN Mechanical Stop on the LY 2001/3001

Piece numbers refer to Figure 5.11.

1. With the valve in the full OPEN position, set OPEN Mechanical Stop Screws (piece #58) (Hex Head Cap Screw) by loosening Locking Nut (piece #59) (Hex Head Nut). (See Figure 5.10 for orientation.)

2. Using the Handwheel, turn the valve to the OPEN position. Make sure the valve is fully open before setting the Mechanical Stop.

3. Rotate Mechanical Stop Screw (piece #58) in the CW direction until contact with the Stop Pin (piece #28) occurs.

4. Back-off Mechanical Stop Screw (CCW direction) approximately 1½ turns.

5. Retighten Locking Nut.

6. Manually operate the actuator through the open limit to assure setting is correct.

NOTE: The Mechanical Stops are intended to protect the equipment from overtravel if a Limit Switch

fails. The valve should not torque-out against the Mechanical Stop Screw during normal OPEN/ CLOSE cycles.

5.10 Setting the MDPI (Mechanical Dial Position

Indicator)

Piece numbers refer to Figure 5.12.

1. After setting the Limit Switch and Mechanical Stop Settings, manually position the valve in the fully CLOSED position.

2. Loosen Screw (piece #147) on MDPI.

3. Make sure the MDPI Dial Plate (piece #146) is aligned properly with the Dial Window Retaining Plate Arrow (piece #108), usually 0% (CLOSED) should align with the arrow. (See Figure 5.12.)

NOTE: If your application uses CW handwheel rotation to OPEN, ﬂip the MDPI Plate over to properly

orient the OPEN and CLOSED position on the MDPI Plate.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

4. Retighten the Screw (piece #147) on the MDPI Dial Plate (piece #146).

Figure 5.12 – Aligning MDPI with Dial Window Retaining Plate

#108 MDPI Retaining Plate arrow

L i m i t o r q u e

100

PERCENT OPEN

Limitorque

#146 MDPI Dial Plate

5.10.1 Setting the Potentiometer

If the LY actuator includes a Feedback Potentiometer used for remote valve position indication, use an ohmmeter to calibrate the position of the potentiometer.

c WARNING: HAZARDOUS VOLTAGE. Turn power off before calibrating the Feedback

Potentiometer.

1. Using the Handwheel, position the actuator to mid-travel (valve at the 50% position).

2. Disconnect the Potentiometer Wiring Harness from where it is plugged in or connected to a Terminal Strip.

#147 Screw

3. Using an ohmmeter, verify that the potentiometer is in mid-travel. The resistance from each End Connection to the Center Connection should be half of the full resistance of the Potentiometer. Example: 1000 ohm potentiometer should read approximately 500 ohms from one of the End Connections to the Center Connection.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 5.13 – Potentiometer Calibration Components

Potentiometer Shaft

Spur Gear

PERCENT OPEN

Limitorque

100

Setscrew

End Connection

Potentiometer Drive Gear

Center Connection

Ohmmeter to Pot Leads

4. If the reading is not correct, proceed to Step 5. If the reading is correct, proceed to Step 6.

5. a. Loosen the small Set Screw that retains the Spur Gear to the Potentiometer Shaft.

b. Using a small ﬂat-tipped screwdriver in the slotted Potentiometer Shaft, rotate the Shaft until

the correct reading is obtained as described in Step 3.

c. Retighten the Set Screw.

6. Disconnect the ohmmeter and reconnect the Potentiometer wiring to the original connection.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Operation

6.1 Typical LY 1001 Operation

LY actuators are always available for motor operation when the motor is energized.

NOTE: Applied voltage rating = voltage rating of actuator ±10%

c WARNING: Do not manually operate the actuator with devices other than installed Handwheel

and Declutch Lever. Using force beyond the ratings of the unit and/or using additive force devices such as cheater bars, wheel wrenches, pipe wrenches, or other devices on the actuator Handwheel or Declutch Lever may cause serious personal injury and/or damage to the actuator or valve.

a CAUTION: Do not motor-operate the valve without ﬁrst setting or checking the limit switch

setting, motor direction, and mechanical stops. Do not force the Declutch Lever into the motor operation position. The Declutch Lever returns to motor-operation position automatically when the motor is energized.

6.2 Verify Correct Motor Rotation (Phasing) and

OPEN/CLOSE Pushbutton Operation

Correct motor rotation must be veriﬁed to prevent serious damage to valve or other equipment. If the actuator motor rotates in the wrong direction, damage could occur by over-torquing equipment into a seated position.

Prior to being shipped from the factory, each actuator is inspected to verify proper operation of the Torque and Position Limit Switches and to ensure that they function correctly, i.e., closes when the CLOSE pushbutton is depressed, opens with the OPEN pushbutton, etc. These inspections are made with a properly phased power source connected as described in the actuator manual.

a CAUTION: To ensure proper operation and to prevent your actuator or other actuated equipment

from damage, verify that your unit is properly connected to its power source.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

6.2.1 Three-Phase Motor

NOTE: Your application may vary from the standard wiring conﬁguration for three-phase shown in Figures 6.1 and 6.2. Refer to the speciﬁc actuator wiring diagram for wiring conﬁguration.

1. Using the Handwheel, move the valve to a midtravel position. Midtravel position allows brief electrical operation in the valve “safe” area and keeps the OPEN and CLOSED Limit Switches from tripping while testing motor direction.

2. Test motor direction by momentarily pressing the OPEN pushbutton:

a. If the actuator moves toward CLOSED, immediately turn all power OFF and reverse the

motor leads T1 and T3 on terminal strip.

b. If the actuator moves toward OPEN, the motor is wired properly for the application.

Figure 6.1 – Standard Actuator/Three-Phase

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

LIMIT SWITCH

PUR/WHT

YEL/WHT

BLU

BLK

PNK

PUR

YEL

BLK

THERMAL OVERLOAD

TOP

LS3

LS7

LS8

LS9

BOTTOM

PLUGS FOR

INTEGRAL

STARTER

YEL/BLK

BLK/WHT

BLU/BLK

LS2

LS4

LS5

LS6

RED/BLK

BLU/WHT

BLU/RED

GRN

BRN

ORG

YEL/RED

RED

BLK

WHT

YEL

BLU

PUR

OPEN CIRCUIT

CLOSE CIRCUIT

OPEN INDICATION

CLOSE INDICATION

OPEN/CLOSE IND. COM

HEATER

PNK

BRN

PUR

ORG

BLK

GRN

RED RED

YEL YEL

BLU

BRN

RED

T BLK

FOR SIGNAL CONVERTER WHEN SUPPLIED

SPARE LIMIT SWITCH#2

SPARE LIMIT SWITCH#3

SPARE LIMIT SWITCH#6

SPARE LIMIT SWITCH#7

CLOSE CIRCUIT

OPEN CIRCUIT

PUR/WHT

RED/BLK

YEL/WHT

BLU/WHT

PNK

BRN

PUR

ORG

BLK

GRN

YEL/BLK

BLU

BLU/BLK

BLKBLK

BRN

RED

WH T BLK

3ph

MOTOR

GRN

RED

LIGHTS

BLK

BLU

PUR

YEL

BUTTONS

BRN

GRY

PNK

ORG

AUX. TERM.

BLUE

YELLOW

BLACK

PUR/WHT

YEL/WHT

PNK

PUR

TH.OL

(P2)

LS4

YELLOW

HTR

(P1)

TS18

BLUE

RED

TS17LS8

RED

LS9

RED

LS5

GREEN

WHITE

LS2

RED/BLK

LS3

BLU/WHT

LS6

BRN

LS7

ORG

BLUE

BLACK

YELLOW

BLACK

GRAY

PINK

THERMAL OVERLOADS

OPEN CIRCUIT

CLOSE CIRCUIT

HEATER

SPARE LIMIT SWITCH

INDICATION

PUR/WHT

TORQUE

SWITCHES

BLU

YEL

BRN

ORG

GRY

PNK

PUR

BLK

WHT

(P)

TS18

BLU/BLK

OPEN

TS17

YEL/BLK

BLK

BRN

RED

TO MOTOR

POWER

SOURCE

BLK/WHT

RED/WHT

3ph

MOTOR

TH.OL

(P)

BLU /RED

YEL/RED

BLK/WHT

POT

BLK

BLK/WHT

RED/WHT

BRN

PUR/WHT

RED/BLK

YEL/WHT

BLU/WHT

YEL/BLK

BLU/BLK

RED/BLK

YEL/WHT

BLU/WHT

YEL/BLK

BLU/BLK

RED

BLK

HTR

POT (CCW)

POT (SWEEPER)

POT (CW)

PNK

BRN

PUR

ORG

Valve shown in full open position

Limit Switch Contact Development

VA LVE POSITION

FULL

OPEN

FULL

OPEN LIMIT

INDICATION

CLOSED LIMIT

LIMIT SWITCH CONTAC T

FUNCTION

SPARE

IND LIGHT

—Closing torque switch interrupts

TS17

control circuit if mechanical overload occurs during closing cycle.

TS18 —Opening torque switch interrupts control circuit if mechanical overload occurs during opening cycle.

NOTES

1. Open contact

2. Close contact

3. All limit switch trip points are fully adjustable.

LEGEND

TH. OL -Thermal Overload Contacts HTR - Space Heater Pot - Slider wire transmitter

POT

(CCW) (CW)

BROWN

BLACK

RED

2625

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Figure 6.2 – Three-Phase with Control Package

Valve shown in full open position

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Limit Switch Contact Development

VA LVE POSITION

LIMIT

SWITCH

CONTAC T

LIMIT SWITCH

PUR/WHT

YEL/WHT

BLU

BLK

PNK

PUR

YEL

BLK

FULL

OPEN

BOTTOM

TOP

LS2

LS3

LS4

LS5

LS6

LS7

LS8

LS9

RED/BLK

BLU/WHT

BLU/RED

YEL/RED

GRN

BRN

ORG

RED

FULL

FUNCTION

SPARE

OPEN LIMIT

IND LIGHT

INDICATION

CLOSED LIMIT

IND LIGHT

(P)

BLU /RED

YEL/RED

3ph

MOTOR

TH.OL

TORQUE

SWITCHES

—Closing torque switch interrupts

TS17

control circuit if mechanical occurs during closing cycle.

overload

TS18 —Opening torque switch interrupts control circuit if mechanical overload occurs during opening cycle.

LEGEND O — Open contact C — Close contact

— Opening coil

— Closing coil

CPT — Control Power Transformer + — Mechanical interlock

NOTES

1. Open contact

2. Close contact

3. All limit switch trip points are fully adjustable.

TH. OL — Thermal overload contacts SS — Selector switch (local-remote) PB1 — Open pushbutton PB2 — Stop pushbutton PB3 — Close pushbutton HTR1 — Space heater HTR2 — Space heater (Side mounted compt. only) POT — Slidewire transmitter

— Red indicating light

— Green indicating light

RES — Lamp Resistors

PUR/WHT

(P)

TS18

BLU/BLK

OPEN

TS17

YEL/BLK

BLK

RED/BLK

YEL/WHT

BLU/WHT

POT

YEL/BLK

BLU/BLK

RED

BRN

BLK

HTR1

PUR/WHT

RED/BLK

YEL/WHT

BLU/WHT

PNK

BRN

PUR

ORG

BLK

GRN

REDRED

YELYEL

BLU

BLKBLK

BRN

RED

BLK

PNK

BRN

PUR

ORG

BLK

GRN

YEL/BLK

BLU

BLU/BLK

BLK/WHT

YEL/BLK

BLU\BLK

BLU

PUR

YEL

SUPPLIED ON SIDE MOUNTED COMPARTMENT

REVERSING STARTER

BLU/WHT

PUR

SELECTOR SWITCH IN

REMOTE INDICATION

HTR2

YEL/WHT

REMOTE OPEN

REMOTE CLOSE

REMOTE STOP

REMOTE COMMON

BLK/WHT

BLK

WH T

POT (CCW)

POT (SWEEPER)

POT (CW)

BLU

YEL

BRN

ORG

GRY

PNK

PUR

BLK

WHT

BLK/WHT

INCOMING

POWE R

BLK

BRN

RED

BLK/WHT

RED/WHT

PUR/WHT

RED/BLK

YEL/WHT

BLU/WHT

YEL/BLK

BLU/BLK

FUSE

CPT

115V

18V

YEL

RED/WHT

BLK/WHT

PNK

BRN

PUR

ORG

RED

BLU

FUSE

BLK

FOR SIGNAL CONVERTER WHEN SUPPLIED

SPARE LIMIT SWITCH#2

SPARE LIMIT SWITCH#3

SPARE LIMIT SWITCH#6

SPARE LIMIT SWITCH#7

GRN

RED

BLK

LIGHTS

BLK

BLU

PUR

YEL

BUTTONS

BRN

GRY

PNK

ORG

BLU

BLK

BLU

PUR

YEL

PUR

BRN

GRY

PNK

ORG

AUX. TERM.

PUSHBUTTON STATION

RED

RES

PB1

OPEN

LOCAL

BRN

SW323

GRN

RES

PB2

PB3

STOP

RED

YEL

BRN

OFF

REMOTE

ORG

RED

PUR

BRN

PNK

GRY

WHT

BLK

LOCAL

OFF

REMOTE

BLU

YEL

BRN

ORG

GRY

PNK

SUPPLIED ON SIDE MOUNTED COMPARTMENT

ORG

PUR

BRN

YEL/BLK

BLU/BLK

PUR/WHT

RED/BLK

YEL/WHT

BLU/WHT

PUR

BLK

WHT

BLK

WHT

BLK/WHT

RED/WHT

BRN

PUR

GRY

PNK

YEL

ORG

BRN

RED

BRN

REMOTE OPEN

REMOTE CLOSE

REMOTE STOP

REMOTE COMMON

SELECTOR SWITCH IN

REMOTE INDICATION

SPARE LIMIT SWITCH#2

SPARE LIMIT SWITCH#3

HTR2

SPARE LIMIT SWITCH#6

SPARE LIMIT SWITCH#7

INCOMING

POWE R

FOR SIGNAL CONVERTER WHEN SUPPLIED

PUR

BLK

WHT

BLK

BLU

PUR

YEL

PNK

ORG

BRN

GRY

BUTTONS

AUX. TERM.

LIGHTS

PUR

BLK

BLU

YEL

BRN

GRY

PNK

ORG

BLU

Figure 6.2 – Three-Phase with Control Package (continued)

TAPS

BLACK

TRANSFORMER TYPES

ALTERNATE STANDARD

500

415

380

8/9

LS9

LS5

600

575

550

LOCAL

PB2

STOP

BLACK

RED

HTR1

HTR2

RED

GREEN

OFF

H1 & H3 TO L1 H2 & H4 TO L2

H3 TO H2, H1 TO

L1 & H4 TO L2

BLACK

RES

REMOTE

230V

460V

FUSE

WHITE

OPEN

BROWN

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

FUSE

(H1)

CPT

115V

RED

PB1

BLUE

PB3

YELLOW

RED

BROWN

RED

PURPLE

BROWN

ORANGE

BLUE

YELLOW

GRAY

PINK

10/11

(H3)

WHITE

YELLOW

(H2)

18V

BLUE

(H4)

18V

BLUE

YELLOW

BLUE

LS4

YELLOW

OPEN

FUSE

BLUE

TH.OL

TS18

BLUE/BLACK

RED

YELLOW/BLACK

TS17LS8

RED

BLACK/WHITE

BLUE

WHITE

YELLOW

WHITE

3ph

MOTOR

POT

STOP

COMMO

REMOTE IND

BLACK

BROWN

RED

2625

PURPLE

LS2

WHITE

YELLOW

WHITE

LS3

RED

BLACK

BLUE

WHITE

SPARE LIMIT

SWITCHES

LS6

PNK

LS7

PUR

BRN

ORG

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

6.2.2 Single-Phase Motor

NOTE: Your application may vary from the standard wiring conﬁguration for the single-phase motor shown in Figures 6.3 and 6.4. Refer to the speciﬁc actuator wiring diagram for wiring conﬁguration.

1. Using the Handwheel, move the valve to a midtravel position. Midtravel position allows electrical operation in the valve “safe” area and keeps the OPEN and CLOSED limit switches from tripping while testing motor direction.

2. Momentarily press the OPEN pushbutton to test motor direction. If the actuator moves toward CLOSED, immediately turn power OFF and proceed with the instructions that match your application. Permanent Split Capacitor single-phase motors can be connected for opposite rotation by interchanging the leads T1 and T2 coming from the motor to the terminal strip.

Figure 6.3 – Standard Actuator/Single-Phase

CAP

HTR

LS9

LS5

LS4

18C

LS8

17C

INDICATION

OPEN CIRCUIT

CLOSE CIRCUIT

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

1 ph

MOTO R

TS18

TS17

POT

(OPTIONAL)

22 CL2

TH.OL

Valve shown in full open position

Limit Switch Contact Development

VA LVE POSITION

LIMIT

SWITCH

FULL

CONTAC T

OPEN

TS17 —Closing torque switch interrupts control circuit if mechanical occurs during closing cycle.

TS18 — Opening torque switch interrupts control circuit if mechanical overload occurs during opening cycle.

NOTES

1. Open contact

2. Close contact

3. All limit switch trip points are fully adjustable.

FULL

overload

FUNCTION

OPEN LIMIT

INDICATION

CLOSED LIMIT

INDICATION

CAP.

POT

(OPTIONAL)

LY COMPARTMENT

17L2 8P2P1 9T1 T3

9CL1 T2

LEGEND HTR —Space heater (LY COMPT.) POT —Slidewire transmitter (optional)

(See certiﬁcation sheet if supplied) TH. OL —Thermal overload (internal)

55C4CL2

1ph

MOTOR

(P)

CL2

HTR

TH.OL

L2L1

18C 18

TS18

OPEN

TOP

LS4

LS5

LS8

LS9

BOTTOM

18C4

55C

17C

TS17

17C 17

Note: Refer to certiﬁed data for construction purposes 16-476-1630-2C.

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Figure 6.4 – Single-Phase with Control Package

Valve shown in full open position

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Limit Switch Contact Development

VA LVE POSITION

LIMIT

SWITCH

FULL

CONTAC T

OPEN

TB2

-11

3-8

5-1 5-2

6-1 6-2

LS9

2-7

LS5

2-8

2-10

2-11

FULL

HTR1

HTR2

TB2

-2

-1

FUNCTION

SPARE

OPEN LIMIT

IND LIGHT

INDICATION

CLOSED LIMIT

IND LIGHT

4-8

4-9

RED

GREEN

TS17 — Closing torque switch interrupts control circuit if mechanical occurs during closing cycle.

TS18 — Opening torque switch interrupts control circuit if mechanical overload occurs during opening cycle.

NOTES

1. Open contact

2. Close contact

3. All limit switch trip points are fully adjustable.

CAP.

3-9

4-7

WHITE

L2 (T3)

TB2-12

overload

MOTOR

LEGEND O — Open contact C — Close contact

— Opening coil

— Closing coil

CAP — Motor capacitor + — Mechanical interlock TH. OL — Thermal overload contacts SS — Selector switch (local-remote) PB1 — Open pushbutton PB2 — Stop pushbutton PB3 — Close pushbutton HTR1 — Space heater (LY Compt.) HTR2 — Space heater (Control Compt.) POT — Slidewire transmitter (optional)

(See certiﬁcation sheet if supplied.)

J1 — Connector for Modutronic 20 units

— Red indicating light

— Green indicating light

POT

(OPTIONAL)

7-1

TB1-8

7-2

TB1-9

7-3

TB1-10

BLACK

PB1

OPEN

4-1

BLUE

REMOTE

ORANGE

BROWN

PINK

GRAY

4-3

YELLOW

PB3

PURPLE

3-2

3-5

4-2

3-1

3-4

4-5

4-6

4-10

4-11

LOCAL

PB2

STOP

4-4

4-6

4-11

2-4 2-5

(CLOSE)

(COMMON)

TB2-9

TB2-10

LS4

LS8

TB2-7

(OPEN)

TB2-6

TB2-5

(STOP)

TB2-4

FOR REMOTE INDICATION (WHEN REQUIRED)

1-4 1-3

1-11-22-1 2-2

TO CUSTOMER'S EQUIPMENT

3-6

3-3

2-12 2-13 2-14 2-15

TB2-8

3-7

LS7LS6

5-3 5-4

TB1-3TB1-1 TB1-2

FOR REMOTE INDICATION

(WHEN REQUIRED)

TH.OL

3-2

3-5

3-4

TB2-7

(OPEN)

TB2-6

(CLOSE)

TB2-5

(STOP)

TB2-4

(COMMON)

3-1

TB2-9

TB2-10

4-5

4-6

4-10

4-6

4-3

4-11

BLACK

ORANGE

BROWN

PINK

GRAY

PURPLE

LS7LS6

TB1-3TB1-1 TB1-2

2-12 2-13 2-14 2-15

FOR REMOTE INDICATION

(WHEN REQUIRED)

FOR REMOTE INDICATION (WHEN REQUIRED)

TO CUSTOMER'S EQUIPMENT

Figure 6.4 – Single-Phase with Control Package (continued)

CONTROL COMPARTMENT

INCOMING POWER

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

LY COMPARTMENT

L1 L2

3-9

INTEGRAL CONTROL

RED WHITE

3-3

3-2

3-5

3-6

3-8

12 3456 7

3-1

3-7

3-4

12 11

MTR HTR

STAT

1112

112345678910

2345678910

6254

98 7

INTG

CONT

INTEGRAL P.C. BOARD

BLACK

BLUE YELLOW

PURPLE

TH.OL

5-1 5-3 5-3 5-4

SW STATION

PB1

PB2

OPEN

STOP

LOCAL

GRAY

COMP

HTR

POT

111112

TB1

TB2

REMOTE

BRN

2C 33C

WHITE

PB3

6-1

GREEN

ORANGE

PURPLE

BROWN

PINK

HTR2

TO CUSTOMER'S EQUIPMENT

GEAR LIMIT SWITCH

TOP

LS2

22C

LS3

HTR1

TH.OL

(P)(P)

MOTOR

5-2

2-4

2-8

2-14

2-13

2-1

2-7

5-1

5-2

5-3

5-4

CAP

(T3)

LS4

LS5

LS6

LS7

LS8

LS9

BOTTOM

33C

2-5

2-11

2-15

2-12

2-2

2-10

TORQUE SWITCH

POT

(OPTIONAL)

7-2

7-1

6-2

7-3

TS17

1-11-2

TS18

1-4 1-3

OPEN

SYMBOL DESCRIPTION

CONNECTOR NUMBER

CONNECTOR

PIN NUMBER

3 4

1-4

CONNECTOR

TERMINAL

STRIP

NUMBER

TB2-12

TERMINAL POINT NUMBER

TERMINAL POINT

Note: Refer to certiﬁed data for construction purposes 16-476-1633-3D.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

6.2.3 DC Motor

NOTE: Your application may vary from the standard wiring conﬁguration for the DC motor. Refer to the speciﬁc actuator wiring diagram for wiring conﬁguration.

2. Test motor direction by momentarily pressing the OPEN pushbutton:

a. If the actuator moves toward CLOSED, immediately turn all power OFF and reverse the motor

leads A1 and A2 on the terminal strip.

b. If the actuator moves toward OPEN, the motor is wired properly for the application.

6.3 Electrical Startup

1. Conﬁrm that the actuator has been correctly lubricated. This is particularly important if the actuator has been in long-term storage.

2. Ensure that the Torque Switch and Limit Switch have been properly set per Section 5.5, Torque Switch Settings and Section 5.8, Setting the Limit Switches respectively.

3. Engage MANUAL operation and hand-crank valve well away from the OPEN or CLOSED end-of-travel.

4. Turn power ON and push the OPEN button to electrically operate the actuator.

5. Verify output rotation:

 • IfMotorrotation(phase)iscorrect,thevalvewillbegintoopen.

 • IfthevalvebeginstoCLOSE—STOPIMMEDIATELY.

Refer to Section 6.2, Verify Correct Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton

Operation to correct the motor rotation, if necessary.

6. If the actuator conﬁguration has a control package, see the speciﬁc control package Instruction and Maintenance Manual for proper setup and calibration.

The actuator should operate correctly and will stop at the end-of-travel by the Torque and Limit

Switch functions.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

6.4 Manual Operation

c WARNING: Do not manually operate actuator with devices other than installed Handwheel and

Declutch Lever. Using additive force devices (cheater bars, wheel wrenches, pipe wrenches, or other devices of this nature) on the actuator handwheel or declutch lever may cause serious personal injury and/or damage to the actuator or valve.

Piece numbers refer to Figures 6.5, 6.6, and 6.7 for LY 1001 and Figure 6.8, 6.9, 6.10, and 6.11 for LY 2001/3001.

The LY actuator has a Handwheel for manual operation. The unit can be manually operated any time the motor is not energized.

1. To manually operate the actuator, push the Declutch Lever (piece #45) clockwise approximately 20° until it latches.

2. If the Declutch Lever will not turn 20° or it does not latch, DO NOT FORCE. Rotate the Handwheel (piece #41) slightly (in either direction) while continuing to push the Declutch Lever in the clockwise direction; the Declutch Lever will latch in place. When the Declutch Lever is latched in place, the Clutch (piece #13) is moved until its lugs engage with the lugs on the Handwheel Clutch (piece #16). This position is maintained indeﬁnitely by the Declutch Fork Assembly (piece #46). When the motor is energized, a ﬂat on the Input Worm Gear (piece #18) releases the Declutch Fork Assembly, pushing the Clutch into motor operation by the Declutch Return Spring (piece #47).

6.5 Motor Operation

a CAUTION: Do not force the Declutch Lever into motor operation. Lever will automatically return

to motor operation when the motor is energized.

Piece numbers refer to Figures 6.5, 6.6, and 6.7 for LY 1001, and Figures 6.8, 6.9, 6.10, and 6.11 for LY 2001/3001.

The Motor Pinion Gear (piece #54) turns the Worm Shaft Pinion Gear (piece #53), which is part of the Input Worm Shaft (piece #31). The Input Worm Shaft drives the Input Worm Gear (piece #18) that is lugged to the Clutch Sleeve (piece #13). The Input Worm Gear drives the Worm Shaft Assembly through the lugs and splines on the Clutch Sleeve. The Output Worm (piece #15) on the Worm Shaft Assembly turns the Drive Sleeve (piece #10). The Drive Sleeve accepts the Torque Nut (piece #32) that is bored and keyed to ﬁt and turn the particular valve stem.

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Figure 6.5 – LY 1001 Cover and Associated Parts

186

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

L i m i t o r q u e

145

106

109

108

Note: Refer to certiﬁed data

for construction purposes 01-458-0019-Rev A.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 6.6 – LY 1001 Top Plate and Associated Parts

147, 148

100

Li mi tor qu e

146

120

PE R CE NT O PE N

142

143

110

169

185

170

171

189 184

111

184

127

Note: Refer to certiﬁed data for construction purposes 01-458-0020-4 Rev C.

130

-1

PEN

Note: Rotate CW 180° for mounting

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 6.7 – LY 1001 Housing and Associated Parts

155

187

123

188

154

141

140

139

114

113

154

155

137

183

182

134

156

124

129

128

131

135

22, 23

99, 100

20, 21, 30

40, 94

15, 18

157

Worm Shaft Assembly

132

144

112

138

121

181

180

165

Note: Refer to certiﬁed data for construction purposes 01-458-0020-4 Rev C.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 6.8 – LY 2001/3001 Cover and Associated Parts

186

L i m i t o r q u e

145

106

107

108

Note: Refer to certiﬁed data

for construction purposes 101-458-0019-4 Rev A.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

147, 148

Figure 6.9 – LY 2001/3001 Top Plate and Associated Parts

142

143

126

127

125

100

PERCENT OPEN

Limitorque

193

110

9, 111

120

130

Note: Refer to certiﬁed data for construction purposes 101-458-0019-4 Rev A.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Figure 6.10 – LY 2001/3001 Housing and Associated Parts

141

140

139

113

114

174

51 50

123

122

184

124

129

128

131

135

21,29,55

20,30

22,23

99,100

15,118

Worm Shaft Assembly

117

146

182

183

89 88

112

134

121

192

138

109

Note: Refer to certiﬁed data

181

180

for construction purposes 01-458-0019-4 Rev A.

132

144

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Figure 6.11 – LY 3001 Handwheel Assembly

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

134

146

136

112

137

119

115

116

Note: Refer to certiﬁed data for construction purposes 01-458-0019-4 Rev A.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Maintenance

7.1 Lubrication

No seal can remain absolutely tight at all times. Therefore, it is not unusual to ﬁnd a very small amount of weeping around shaft seals—especially during long periods of idleness such as storage. Using grease minimizes this condition as much as possible. If a small amount is weeping at startup, remove it with a clean cloth. Once the equipment is operating on a regular basis, the weeping should stop.

7.1.1 Lubrication Inspection

Inspect Limitorque LY series actuators for correct lubrication prior to operating—particularly following a long storage period.

Each application has its own effect on the actuator and the frequency of these inspections should be based on the application and the operating experience. The following lubrication inspection schedule is recommended until operating experience indicates otherwise.

For Gear Case, inspect lubrication every 18 months or 500 cycles, whichever occurs ﬁrst.

During an inspection, consider the following:

• Quantity – LY operators are built to operate on the immersion principle. Ensure there is enough

lubricant so that the Worm is totally immersed in grease regardless of the position.

• Quality – Inspect lubricant for dirt, water, or other foreign matter. If any one of these is found:

1. Flush the actuator with a commercial degreaser/cleaner such as Exxon Varsol #18. This

degreaser/cleaner is not corrosive and does not affect the seal materials.

2. Repack the actuator with fresh lubricant, allowing room for grease thermal expansion.

• Consistency – Ensure the lubricant is ﬂuid approximating a standard NLGI-0 grade consistency or

less. Thinners such as Amoco WAYTAC #31 oil may be added provided the volume of thinner does not exceed 20% of the total lubricant.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

7.1.2 Factory Lubricant

The LY actuator gear case is factory-lubricated with an NLGI Grade 0 lithium-base grease suitable for temperatures from -20°F (-29°C) to 250°F (121°C). For temperatures above or below this range, consult the factory.

7.2 Minimum Lubricant Qualities Required

The standard lubricants used by Flowserve have been proven to be extremely reliable over years of service. Flowserve does not recommend a particular lubricant substitute for the standard lubricants; however, Flowserve does require the following lubricant qualities as a minimum.

a CAUTION: Do not mix lubricants of a different base chemical. Mixing lubricant bases may cause

lubricant properties to be ineffective.

The lubricant must:

• have “EP” properties.

• be suitable for the temperature range intended.

• be water and heat-resistant and non-separating.

• not create more than 8% swell in Buna N or Viton.

• not contain any grit, abrasive, or ﬁllers.

• slump NLGI 0 or 00.

• not be corrosive to steel gears, ball, or roller bearings.

• have a dropping point above 316°F (158°C) for temperature ranges of -20°F (-9°C) to 250°F (121°C).

7.3 Disassembly and Reassembly

a CAUTION: Turn off all power services before attempting to perform service on the actuator.

POTENTIAL HIGH-PRESSURE VESSEL. Before removing or disassembling your actuator, ensure that the valve or other actuated device is isolated and not under pressure.

7.3.1 LY 1001 Disassembly

Unless otherwise noted, piece numbers refer to the Illustrated Parts Breakdown of Figures 6.5, 6.6, and 6.7.

c WARNING: HAZARDOUS VOLTAGE. Turn off all power before disassembling your LY actuator.

c WARNING: POTENTIAL HIGH-PRESSURE VESSEL. Before disassembling your actuator, ensure

that the valve or other actuated device is isolated and is not under pressure.

Remove Cover and Top Plate

1. Turn off all power to the actuator.

2. Remove the Control Cover (piece #3).

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

3. Disconnect all electrical leads from the Torque Switch (piece #8) and Limit Switch (piece #7). Make sure all wire leads are properly marked for reassembly.

4. Remove all external wires to the Terminal Strips (pieces #9 and 110).

5. If unit has an Integral Assembly, remove all wires from the Integral Assembly to the Terminal Strip (pieces #9 and 110).

6. Remove Screws/Lockwashers (pieces #77, 78, 79, and 80) that are holding the Limit Switch (piece #7) and Heater Assembly (piece #120). Remove the Limit Switch and Heater Assembly.

7. Remove two Screws (piece #97) and two Lockwashers (piece #98) that are holding the Torque Switch (piece #8). Remove the Torque Switch.

8. Remove two Screws (piece #65) and two Lockwashers (piece #66) to remove the Top Plate (piece #2).

9. Lift Top Plate (piece #2) off the LY Housing (piece #1). The Motor (piece #6) can be left attached to the Top Plate when the Top Plate is removed.

Remove Input Worm Motor Pinion Assembly

10. Remove Input Worm Motor Pinion Assembly (pieces #52, 156, 53, 124, and 31).

Remove Worm Shaft Assembly

11. Remove four Screws (piece #61) and four Lockwashers (piece #62) to remove Disc Spring Cap (piece #5).

12. Remove Disc Spring Cap (piece #5) and O-Ring (piece #135).

13. Rotate Worm Shaft Assembly CCW. The Worm Shaft Assembly should travel out of the Housing. Once it has reached the end-of-travel, pull the remaining Worm Shaft Assembly out; Clutch Sleeve (piece #13) will slip off the Worm Shaft Assembly. In the event that the Worm is stripped, the Worm Shaft Assembly will need to be completely replaced.

NOTE: If Light Spring Pack or Heavy Spring Pack replacement is necessary, contact your Limitorque

authorized dealer or the Limitorque Service Department for a complete Worm Shaft Assembly replacement.

Remove Handwheel Assembly

14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #154), Clutch Sleeve (piece #13), Thrust Washer (piece #26 [two pieces]), and Thrust Bearing (piece #27).

15. Remove two Screws (piece #63) and two Lockwashers (piece #64) from the Handwheel Cap (piece #34).

16. Remove the Handwheel Assembly as one piece, (piece #41, 112, 34, 137, 134, 155 [two pieces], 154, 70, and 37).

Remove Drive Sleeve

17. Remove O-Ring (piece #129) and Bearing (piece #33) from the top of the Drive Sleeve (piece #10).

18. Remove the Drive Sleeve (piece #10).

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

#47 Declutch

Remove Declutch Assembly

19. Remove Roll Pin (piece #121) and remove Declutch Lever (piece #45).

20. Push the Declutch Assembly (piece #46, 123, 44, and 55 [two pieces]) up through the Housing and remove. Remove the Declutch Return Spring (piece #47).

21. Remove O-Ring (piece #138) from the Housing.

Remove Input Worm Gear

22. Remove the Retaining Drive Ring (piece #114).

23. Remove Input Worm Gear (piece #18) from the Ball Bearing (piece #24).

7.3.2 LY 1001 Reassembly

c WARNING: HAZARDOUS VOLTAGE. Turn off all power before reassembling your LY actuator.

All piece numbers refer to Figures 6.5, 6.6, and 6.7.

Install Input Worm Gear

1. Install Input Worm Gear (piece #18).

2. Install External Retaining Drive Ring (piece #114) on Input Worm Gear.

Install Declutch Assembly

3. Install Declutch Return Spring (piece #47), making sure one end of Spring is secured behind the Rib of the actuator housing and the other end is secured behind the bottom Declutch Fork of the Declutch Fork Assembly.

Figure 7.1 – LY 1001 Declutch Return Spring Installation Position

Return Spring

Rib

Bottom Declutch

6301.6301.

Fork

LY 1001 End View

LY 1001 Top View

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

4. Install Declutch Assembly (piece #46, 123, 44, and 55).

5. Install O-Ring (piece #138) over Declutch Shaft (piece #44).

6. Install Declutch Lever (piece #45) and Roll Pin (piece #121).

Install Drive Sleeve

7. Install Drive Sleeve (piece #10).

8. Install Ball Bearing (piece #33) and O-Ring (piece #129) on the Drive Sleeve.

Install Worm Shaft Assembly

9. Install Worm Shaft Assembly.

NOTE: Push the Worm Shaft Assembly through to about ½" past the Input Worm Gear for installing

the Clutch Sleeve (piece #13).

Install Handwheel Assembly

10. Install the Clutch Sleeve (piece #13), ensuring the Declutch Fork Assembly (piece #46) is between the Input Worm Gear (piece #18) and the Clutch Sleeve (piece #13).

11. Install Thrust Washer (piece #26), Thrust Bearing (piece #27), and second Thrust Washer (piece #26) into the Handwheel Clutch (piece #16).

12. Put a light coat of grease on the Thrust Bearing. Install Spring (piece #154) into the Handwheel Clutch.

13. Install Handwheel Clutch Assembly (pieces #16, 154, 26 [two pieces], and 27) into the Housing. Push remaining Worm Shaft Assembly into the Handwheel Clutch of the Handwheel Clutch Assembly.

14. Install O-Ring (piece #135) over the Worm Shaft Assembly Bearing.

15. Install Disc Spring Cap (piece #5) and Hardware (pieces #61 and 62).

16. Install Handwheel Cap Gasket (piece #137) and Handwheel Assembly (pieces #41, 112, 34, 137, 134, 155 [two pieces], 154, 70, and 37).

17. Install Hex Head Cap Screw and Lockwasher (pieces #63 and 64).

Install Input Worm Motor Pinion Assembly

18. Install Input Worm Motor Pinion Assembly (pieces #52, 156, 53, 124, and 31) into the Housing.

19. Install Housing Seal (O-Ring) (pieces #131).

Grease Unit

20. Grease unit with the properly recommended grease. (See Section 7.1, Lubrication.)

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Install Top Plate

21. Install Top Plate (piece #2) and Hardware (pieces #65 and 66).

NOTE: If Top Plate will not ﬁt properly, check Ball Bearing (piece #33) and Declutch Shaft (piece

#44) for proper alignment into Top Plate molding.

Install Torque Switch Assembly, Motor Assembly, and Limit Assembly

22. Install Torque Switch Assembly (piece #8) with Gasket and Hardware (piece #98 and 97).

23. Install Limit Switch Assembly (piece #7) and Heater Assembly (piece #120) with Hardware (piece #77, 78, 79, and 80).

24. Reconnect Limit Switch, Torque Switch, and Terminal Strip. (See the wiring diagram included with the actuator for proper wiring conﬁguration.)

Install Control Cover

NOTE: Before installing the Control Cover, reset the Limit Switches and Mechanical Stops. Recheck

motor for proper rotation.

25. Install Cover Seal O-Ring (piece #130).

26. Install Control Cover (piece #3) with Hardware (piece #67 and 68).

7.3.3 LY 2001/3001 Disassembly

c WARNING: HAZARDOUS VOLTAGE. Turn off all power before disassembling your LY actuator.

c WARNING: POTENTIAL HIGH-PRESSURE VESSEL. Before disassembling your actuator, ensure

that the valve or other actuated device is isolated and is not under pressure.

Piece numbers refer to Figures 6.8, 6.9, 6.10, and 6.11.

Remove Cover and Top Plate

1. Shut off all power to the actuator.

2. Remove the Control Cover (piece #3).

3. Disconnect all electrical leads from the Torque Switch (piece #8) and Limit Switch (piece #7). Make sure all wire leads are properly marked for reassembly.

4. Remove all external wires to the Terminal Strips (piece #9, 110, and 111).

5. If unit has an Integral Assembly, remove all wires from the Integral Assembly to the Terminal Strip (piece #9, 110, and 111).

6. Remove Screws/Lockwashers (piece #79 and 80) that are holding the Limit Switch (piece #7). Remove the Limit Switch.

7. Remove two Screws (piece #97) and two Lockwashers (piece #98) that are holding the Torque Switch (piece #8). Remove the Torque Switch.

8. Remove two Screws (piece #88) and two Lockwashers (piece #89) to remove the Top Plate (piece #2).

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

9. Lift Top Plate (piece #2) off the LY Housing (piece #1). The Motor (piece #6) can be left attached to the Top Plate when the Top Plate is removed.

Remove Input Worm Motor Pinion Assembly

10. Remove Input Worm Motor Pinion Assembly (piece #52, 53, 124, and 31).

Remove Worm Shaft Assembly

11. Remove four Screws (piece #61) and four Lockwashers (piece #62) to remove Bearing Cap (piece #5).

12. Remove Bearing Cap (piece #5) and O-Ring (piece #135).

13. Rotate Worm Shaft Assembly counterclockwise. The Worm Shaft Assembly should travel out of the Housing. Once it has reached the end-of-travel, pull the remaining Worm Shaft Assembly out; Clutch Sleeve (piece #13) will slip off the Worm Shaft Assembly. In the event that the Worm is stripped, the Worm Shaft Assembly will need to be completely replaced.

NOTE: If Light Spring Pack or Heavy Spring Pack replacement is necessary, contact your Limitorque authorized dealer or the Limitorque Service Department for a complete Worm Shaft Assembly replacement.

Remove Handwheel Assembly (LY 2001)

14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #17), Clutch Sleeve (piece #13), Thrust Washer (piece #26 [two pieces]), and Thrust Bearing (piece #27).

15. Remove four Screws (piece #70) and four Lockwashers (piece #71) from the Handwheel Cap Plate (piece #69).

16. Remove the Handwheel Assembly as one piece (pieces #146, 41, 112, 69, 192, 134, and 37).

17. Go to Step 19.

Remove Handwheel Assembly (LY 3001)

14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #17), Clutch Sleeve (piece #13) and Thrust Washer (piece #26 [two pieces]), and Thrust Bearing (piece #27).

15. Remove Screws (pieces #63 and 65) and Lockwashers (piece #64 and 66) from the Spur Gear Cover (piece #34) of the Handwheel Assembly.

16. Remove the Handwheel Assembly as one piece (pieces #146, 41, 112, 136, 39 [two pieces], 34, 137, 116, 115, 38, and 36).

17. Remove the Handwheel Pinion and Idler (piece #43) and Idler Shaft (piece #42).

18. Remove the Handwheel Gear Assembly (pieces #119, 35, and 37).

Remove Drive Sleeve

19. Remove the Roll Pins (piece #174) located in the end of the Mechanical Stop Screws (piece #58).

20. Remove the Mechanical Stop Screws (piece #58), Locking Nut (piece #59), Thread-Seal (piece #60), and Retaining Washer (piece #184).

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

21. Remove O-Ring (piece #129) and Bearing (piece #33) from the top of the Drive Sleeve (piece #10).

22. Remove the Drive Sleeve (piece #10).

Remove Declutch Assembly

23. Remove Roll Pin (piece #121) and remove Declutch Lever (piece #45).

24. Push the Declutch Assembly (pieces #46, 48, 123, 122, and 44) up through the Housing and remove. Then remove Declutch Return Spring (piece #47).

25. Remove O-Ring (piece #138) from the Housing.

Remove Input Worm Gear

26. Remove the Retaining Drive Ring (piece #113).

27. Remove Input Worm Gear (piece #18) and Lug Adapter (piece #25) as an assembly from the Ball Bearing (piece #24).

7.3.4 LY 2001/3001 Reassembly

c WARNING: HAZARDOUS VOLTAGE. Turn off all power before assembling the LY actuator.

Piece numbers refer to Figures 6.8, 6.9, 6.10, and 6.11.

Install Input Worm Gear

1. Install Input Worm Gear (piece #18).

2. Install External Retaining Drive Ring (piece #113) on Input Worm Gear.

Install Declutch Assembly

3. Install Declutch Return Spring (piece #47), making sure one end of Spring is secured in the Spring Seat Hole of the actuator housing and the other end is secured around the Roll Pin (piece #122) on the Declutch Fork Assembly.

Figure 7.2 – LY 2001/3001 Declutch Return Spring Installation Position

#122 Roll Pin

#47 Declutch Return Spring

Spring Seat Hole

LY 2001/3001 End View

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

4. Install Declutch Assembly (piece #46, 48, 123, 122, and 44).

5. Install O-Ring (piece #138) over Declutch Shaft (piece #44).

6. Install Declutch Lever (piece #45) and Roll Pin (piece #121).

Install Drive Sleeve

7. Install Drive Sleeve (piece #10).

8. Install Bearing (piece #33) and O-Ring (piece #129) on the Drive Sleeve.

9. Install the Mechanical Stop Screws (piece #58), Locking Nut (piece #59), Thread-Seal (piece #60), and Retaining Washer (piece #184).

10. Install the Roll Pins (piece #174) located in the end of the Mechanical Stop Screws (piece #58).

Install Worm Shaft Assembly

11. Install Worm Shaft Assembly. Push the Worm Shaft Assembly through to about ½” past the Input Worm Gear. This allows installation of the Clutch Sleeve (piece #13).

Install Handwheel Assembly

12. Install the Clutch Sleeve (piece #13), ensuring the Declutch Fork Assembly (piece #46) is between the Input Worm Gear (piece #18) and the Clutch Sleeve (piece #13).

13. Install Thrust Washer (piece #26), Thrust Bearing (piece #27) and second Thrust Washer (piece #26) into the Handwheel Clutch (piece #16).

14. Put a light coat of grease on the Thrust Bearing. Install Spring (piece #17) into the Handwheel Clutch.

15. Install Handwheel Clutch Assembly (pieces #16, 17, 26 [two pieces], and 27) into the Housing. Push remaining Worm Shaft Assembly into the Handwheel Clutch of the Handwheel Clutch Assembly.

16. Install O-Ring (piece #135) over the Worm Shaft Assembly Bearing.

17. Install Bearing Cap (piece #5) and Hardware (pieces #61 and 62).

LY 2001 Handwheel Assembly

18. Install Handwheel Assembly (pieces #146, 41, 112, 69, 192, 134, and 37).

19. Install Hardware (pieces #70 and 71).

20. Go to Step 22.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

LY 3001 Handwheel Assembly

18. Install the Handwheel Gear Assembly (pieces #119, 35, and 37).

19. Install the Handwheel Pinion and Idler (piece #43) and Idler Shaft (piece #42).

20. Install the Handwheel Assembly (pieces #146, 41, 112, 136, 39, 34, 137, 116, 115, 38, and 36).

21. Install Screws (pieces #63 and 65) and Lockwashers (pieces #64 and 66) to secure the Handwheel Assembly onto the housing.

Install Input Worm Motor Pinion Assembly

22. Install Input Worm Motor Pinion Assembly (piece #52, 53, 124, and 31) into the Housing.

23. Install Housing Seal (O-Ring) (piece #131).

Grease Unit

24. Grease unit with the properly recommended grease. (See Section 7.1, Lubrication.)

Install Top Plate

25. Install Top Plate (piece #2) and Hardware (piece #88 and 89).

NOTE: If Top Plate will not ﬁt properly, check Bearing (piece #33) and Declutch Shaft (piece #44) for

proper alignment into Top Plate molding.

Install Torque Switch Assembly, Motor Assembly, and Limit Assembly

26. Install Torque Switch Assembly with Gasket (piece #8) and Hardware (piece #97 and 98).

27. Install Limit Switch (piece #7) with Hardware (piece #79 and 80).

28. Reconnect Limit Switch, Torque Switch, and Terminal Strip. Refer to the actuator wiring diagram for proper wiring conﬁguration.

Install Control Cover

NOTE: Before installing the Control Cover, reset the Limit Switches and Mechanical Stops. Recheck

motor for proper rotation.

29. Install Cover O-Ring (piece #130).

30. Install Control Cover (piece #3) with Hardware (piece #67 and 68).

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

7.4 Troubleshooting

c WARNING: Be aware of electrical hazards within the actuator and high-pressure hazards of the

attached valve or other actuated device when installing or performing maintenance on the LY actuator.

Symptom Possible Cause Corrective Action

Unit will not operate electically No power to unit a. Verify power supply is

electrically correct and present at actuator.

b. Verify power leads are

connected in accordance with the applicable wiring diagram.

c. Inspect for blown fuse, tripped

circuit breaker or overload or open disconnect switch.

Loose or incorrect wiring Check wiring for proper wiring

connection in accordance with the applicable wiring diagram. Check also for tight connections.

Motor runs, but no output from unit

Limit Switches not set or incorrectly set

Foreign material on switch contacts preventing good electrical contact

Actuator not coupled properly to output

Worm gear worn out Remove Worm Shaft Assembly

Torque Nut disengaged from Drive Sleeve

Damaged gearing Disassemble actuator in

Check Limit Switch development incorrectly set for agreement with the applicable wiring diagram. If not set properly, follow instructions in Section 5.7, Limit Switch and Mechanical Stop Settings.

Check continuity of microswitch with an ohmmeter.

Inspect Torque Nut and Valve Shaft to verify key is in place and properly staked.

in accordance with Section 7.3.1, Disassemble Unit LY 1001 or Section 7.3.3, Disassemble Unit LY 2001/3001 as applicable. Inspect worm gear for unusual wear. If excessive wear has occurred, replace the Worm Shaft Assembly.

Verify Torque Nut properly installed in accordance with Section 5.4, Installation (continued) Overview Step No. 1.

accordance with Section 7.3.1, Disassemble Unit LY 1001 or Section 7.3.3, Disassemble Unit LY 2001/3001 as applicable. Inspect gearing for rough or damaged spots. Replace as required. Most often, damaged spots are seen in motor gear set.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Symptom Possible Cause Corrective Action

Unit operation is noisy Inadequate lubrication (poor

quality or not enough)

Gearing misaligned Inspect gearing for uneven wear

Worn or damaged bearings Disassemble unit and replace

Fuse blown Incorrect fuse size Verify fuses are sized correctly.

Pinched wire Inspect control compartment

Power surges Investigate control circuit for

Premature Torque Switch trip Torque Switch setting too low Increase Torque Switch setting

Valve packing too tight Inspect valve packing for

Unit is not properly aligned with valve

Valve needs lubrication Check valve lubrication using

Torque Switch fails to stop actuator

Reversing Starter failure Starter undersized Verify starter is sized correctly

Excessive current draw Valve running loads higher that

Output rotation not in agreement with unit wiring

Inadequate voltage going to unit Check incoming voltage supply.

Excessive cycling (too frequent operation)

expected

Inspect quality and quantity of lubrication in accordance with Section 7.1, Lubrication.

pattern and replace gearing as needed. Most wear is seen in the motor gear set.

worn bearings, seals, and lubricant.

to ensure Control Cover is not pinching or making contact with wiring when installed.

surges.

as Switch trip required, up to but not exceeding maximum setting established by the Torque Switch Limiter Plate.

excessive tightness. Repair valve by replacing packing as required. Refer to your valve manufacturer for specific instructions.

Take bolts off between the unit and the valve. Check for proper unit alignment.

grease fitting on bottom of valve.

Consult Flowserve to verify design rotation. If actual rotation is opposite to design rotation, the Torque Switch needs to have contact wiring reversed.

for application. Consult factory to evaluate.

Review application to determine number of starts per hour and review with factory if more than 100 per hour.

Inspect valve for possible causes of high running load. In particular, check for excessive tightness of valve packing and for proper lubrication of valve. Consult Flowserve for review of application.

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Symptom Possible Cause Corrective Action

Motor overload tripping Excessive current draw Inspect valve for possible

causes of high running load. In particular, check for excessive tightness of valve packing and for proper lubrication of valve. Consult Flowserve for review of application.

Incorrect overloads Verify proper overloads selected

for motor rating.

Excessive gear wear Excessive loads Verify actual loads are in

accordance with both start and run capabilities of your actuator.

Inadequate lubrication Inspect quality and quantity of

lubrication in accordance with Section 7.1, Lubrication.

Improper alignment Inspect worn gears for evidence of

uneven wear pattern.

Excessive torque required to turn handwheel

Valve running loads higher than expected

Unit is not properly aligned with valve

Inspect valve for possible cause of high running loads. In particular, check for excessive tightness of valve packing, proper lubrication of valve stem, bent or damaged valve, tight Stem/Torque Nut fit, worm, or damaged Stem Nut.

Take bolts off between the unit and the valve and check for proper unit alignment.

Oil leaking from unit Infrequent operation of actuator

resulting in grease separation

Damaged or worn seals Replace seals.

Valve is closed, but ﬂow is not cut off

c CAUTION: Most quarter-turn valves are position-seated, not

torque-seated. Applying additional torque to the hand-wheel and/or repeated electrical bumping at the full closed position may damage the valve and/or the actuator.

Valve mechanical stops not set correctly

Institute periodic operation of unit into a maintenance program to keep grease mixed. If not possible, schedule more frequent lubrication to ensure adequate lubrication of gearbox.

a. Do not set Torque Switch flow

is not cut off not set correctly higher than maximum setting defined by Torque Limiter Plate. Inspect valve seat and repair as required.

b. Check setting of Closed

Mechanical Stop.

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Parts List

Table 8.1 – LY 1001 Parts List (Refer to Figures 6.5, 6.6 and 6.7)

Piece # Description Qty Piece # Description Qty

1 LY 1001 Housing 1 55 Retaining Washer 2 Top Plate 1 56 Hex Head Cap Screw 4 3 Control Cover 1 57 Lockwasher 4 4 Conduit Adapter 1 58 Mechanical Stop (Set Screw) 2 5 Disc Spring Cap 1 59 Set Screw 2 6 Motor 1 61 Hex Head Cap Screw 4 7 Limit Switch Assembly 4 62 Lockwasher 4 8 Torque Switch Assembly 1 63 Hex Head Cap Screw 2 9 Terminal Strip 2 64 Lockwasher 2 10 Drive Sleeve 1 65 Hex Head Cap Screw 2 11 Capacitor Varies 66 Lockwasher 2 12 Capacitor Clamp 1 67 Hex Head Cap Screw 6 13 Clutch Sleeve 1 68 Lockwasher 6 14 Worm Shaft* 1 70 Roll Pin – HW Input Shaft 1 15 Worm* 1 72 Hex Head Cap Screw 1 16 Handwheel Clutch 1 73 Lockwasher 1 18 Input Worm Gear 1 79 Fillister HD Machine Screw 1 19 Ball Bearing* 2 80 Lockwasher 2 20 Disc Spring* 6 81 Terminal Bracket 1 21 Spring Spacer* 2 82 Fillister HD Machine Screw 2 22 Torque Switch Spacer* 1 83 Lockwasher Internal Tooth 2 23 Worm Spacer* 2 84 Pipe Plug 1 24 Ball Bearing 1 85 Pipe Plug 1 26 Thrust Washer 2 86 Hex Head Screw 4 27 Thrust Bearing 1 94 Roll Pin* 1 30 Spring Sleeve* 1 96 Groove Pin* 1 31 Input Worm Shaft 1 97 Fillister HD Machine Screw. 2 32 Torque Nut 1 98 Lockwasher Internal Tooth 2 33 Ball Bearing 1 99 Flat Washer* 1 34 Handwheel Cap 1 100 Flexloc Nut* 1 37 Handwheel Input Shaft 1 106 Dial Window 1 40 Bearing Stop* 1 108 Dial Window Retaining Plate 1 41 Handwheel 1 109 Dial Window Gasket 1 44 Declutch Shaft 1 110 Terminal Strip 1 45 Declutch Lever 1 111 Press-on Retaining Clip 15 46 Declutch Fork Assembly 1 112 Roll Pin - Handwheel 1 47 Declutch Return Spring 1 113 Retaining Ring 1 48 Dowel Pin 1 114 Retaining Ring 1 50 Declutch Latch – Right 1 118 Key* 1

51 Declutch Latch – Left 1 120 Heater 1 52 Ball Bearing 2 121 Roll Pin – Declutch Handle 1 53 Pinion Gear 1 123 Roll Pin – Declutch Shaft 1 54 Motor Pinion Gear 1 124 Roll Pin – Input Shaft 1

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Table 8.1 – LY 1001 Parts List (continued)

Piece # Description Qty Piece # Description Qty

126 Roll Pin 1 153 Spring Spacer* 1 127 O-Ring – Motor 1 154 Compression Spring 2 128 Quad Ring 1 155 Handwheel Washer 2 129 O-Ring (3 mm) 1 156 Spacer – Worm Shaft 1

– Drive Sleeve 1 59 Set Screw 2 130 Cover Seal 1 157 Washer* 1 131 Housing Seal 1 165 Retaining Ring – Torque Nut 1 132 O-Ring – Conduit Adapter 1 169 Capacitor Bracket 1 134 Quad Ring – Handwheel Shaft 1 170 Fillister HD Machine Screw 1 135 O-Ring – Disc Spring Cap 1 171 Lockwasher Internal Tooth 1 137 Handwheel Cap Gasket 1 180 Declutch Lever Plate 1 138 O-Ring – Declutch Handle 1 181 Drive Screws - Handle 2 139 Unit Nameplate 1 182 Cheater Bar Warning Label 1 140 Drive Screw – Nameplate 4 183 Drive Screws 2 141 Grounding Lug 1 184 Retaining Drive Rings 2 142 Hex Head Cap Screw 2 185 Key 1 143 Lockwasher 2 186 Warning Label – Cover 1 144 Pipe Plug 2 187 Washer 1 145 O-Ring – Window 1 188 Quad ring – Handwheel Shaft 1 146 Dial 1 189 Oil Seal – Motor Shaft 1 147 Fillister HD Machine Screw 1 148 Lockwasher Internal Tooth 1

* Worm Shaft Assembly Component

Table 8.2 – LY 2001/3001 Parts List

Piece # Description Qty Piece # Description Qty

1 Housing 1 24 Ball Bearing - Input 1 2 Top Plate 1 25 Lug Adapter 1 3 Control Cover 1 26 Thrust Washer 2 4 Conduit Adapter 1 27 Thrust Bearing 2 5 Bearing Cap 1 28 Stop Pin 2 6 Motor 1 29 Spring Pack Shim* 1 7 Limit Switch Assembly 1 30 Limit Sleeve* 1 8 Torque Switch Assembly 1 31 Input Worm Shaft 1 9 Terminal Strip 2 32 Torque Nut 1 10 Drive Sleeve and Gear 1 33 Ball Bearing 1 11 Capacitor Varies 34 Spur Gear Cover 1 12 Capacitor Bracket 1 35 Handwheel Gear 1 13 Clutch Sleeve 1 36 Handwheel Pinion and Idler 1 14 Worm Shaft* 1 37 Handwheel Input Shaft 1 15 Worm* 1 38 Handwheel Input Shaft 1 16 Handwheel Clutch (Lug Adapter) 1 39 Bushing 3 17 Compression Spring 1 40 Bushing 1 18 Input Worm Gear 1 41 Handwheel 1 19 Ball Bearing* 2 42 Idler Shaft 1 20 Disc Spring* 6 43 Handwheel Pinion and Idler 1 21 Spring Washer* 1 44 Declutch Shaft 1 22 Bearing Spacer* 1 45 Declutch Lever 1 23 Worm Spacer* 1 46 Declutch Fork Assembly 1

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Table 8.2 – LY 2001/3001 Parts List (continued)

Piece # Description Qty Piece # Description Qty

47 Declutch Lever Return Spring 1 108 Dial Window Retaining Plate 1 48 Dowel Pin 1 109 Retaining Drive Ring Internal 1 49 Compression Spring 2 110 Terminal Strip 1 50 Declutch Latch – Right 1 111 Press-on Retaining Clip 15 51 Declutch Latch – Left 1 112 Roll Pin – Handwheel 1 52 Ball Bearing 2 113 Retaining Ring 1 53 Worm Shaft Gear 1 114 Retaining Ring 1 54 Motor Pinion Gear 1 115 Retaining Ring 1 55 Spring Sleeve* 2 116 Retainer Washer 1 56 Hex Head Cap Screw 4 117 Roll Pin (Spring)* 1 57 Lockwasher 4 118 Key* 1 58 Full-Threaded Hex Head Cap Screw 2 119 Retaining Ring 1 59 Locking Nut (Jam Nut) 2 120 Heater Bracket Assembly 1 60 Thread-Seal 2 121 Roll Pin – Declutch Lever 1 61 Hex Head Cap Screw 4 122 Roll Pin – Declutch Shaft 1 62 Lockwasher 4 123 Roll Pin – Declutch Shaft 1 63 Hex Head Cap Screw 2 124 Key – Input Shaft 1 64 Lockwasher 2 125 Retaining Ring – Motor Pinion 1 65 Hex Head Cap Screw 2 126 Key – Motor Pinion 1 66 Lockwasher 2 127 O-Ring – Motor 1 67 Hex Head Cap Screw 8 128 Quad Ring – Drive Sleeve 1 68 Lockwasher 8 129 O-Ring – Drive Sleeve 1 69 Handwheel Cap Plate 1 130 Cover Seal 1 70 Fillister HD Machine Screw 1 131 Housing Seal 1 71 Lockwasher 1 132 O-Ring – Conduit Adapter 1 72 Hex Head Cap Screw 1 134 O-Ring – Handwheel Shaft 1 73 Lockwasher 1 135 O-Ring – Bearing Cap 1 74 Fillister HD Machine Screw Varies 136 Lip Seal 1 75 Lockwasher Varies 137 Gear Cover Gasket 1 76 Hex Nut Varies 138 O-Ring – Declutch 1 77 Fillister HD Machine Screw Varies 139 Unit Nameplate 1 78 Lockwasher Internal Tooth 1 140 79 Fillister HD Machine Screw 2 80 Lockwasher Internal Tooth 2 81 Terminal Bracket 1 82 Fillister HD Machine Screw 2 83 Lockwasher Internal Tooth 2 84 Pipe Plug 2 86 Hex Head Cap Screw 4 88 Hex Head Cap Screw 2 89 Lockwasher 2 90 Worm Drive Clamp Varies 94 Socket Head Cap Screw 2 95 Lockwasher 2 96 Input Gear – Dowel Pin 2 97 Fillister HD Machine Screw 2 98 Lockwasher Internal Tooth 2 99 Bearing Locknut* 1 100 Stop Window* 1 106 Dial Window 1 107 Dial Window Gasket 1

* Worm Shaft Assembly Component

6060

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Drive Screw 4 141 Grounding Lug 1 142 Hex Head Cap Screw 2 143 Lockwasher 2 144 Pipe Plug 2 145 O-Ring – Window 1 146 Handwheel Label 1 147 Fillister HD Machine Screw 1 148 Lockwasher Internal Tooth 1 157 Spacer 4 174 Roll Pin 2 180 Declutch Lever Plate 1 181 Drive Screw 2 182 Cheater Bar Warning Label 1 183 Drive Screw 2 184 Retaining Washer 1 186 Warning Label 1 192 Gear Cover Gasket 1 193 Dial 1

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

How to Order Parts

To order parts or obtain further information for your Limitorque LY valve actuators, contact your local Limitorque distributor sales ofﬁce, or:

Flowserve Limitorque 5114 Woodall Road Lynchburg, VA 24502 Telephone: 434-528-4400 Fax 434-845-9736

All inquiries or orders must be accompanied by the following information, which is located on the nameplate:

1. Operator size

2. Order number

3. Serial number

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

Regulatory Information

Declaration of Conformity

Application of Council Directive(s)

89/336/EEC; EMC Directive

98/37/EEC; Machinery Directive

Standard(s) to which Conformity is Declared

Machinery; EN 60204 EMC

• Emissions; EN 50081-1and 2, EN 55011, CFR 47

• Immunity; EN 50082-1and 2, IEC 801-3 and IEC 801-6 ESD; IEC 801-2

• EFT/Bursts; IEC 801-4

• Surge Immunity; IEC 801-5, ANSI/IEEE C62.41 Mains (power)

• Harmonics; MIL-STD-462, Method CSO1 and CSO2

Manufacturer’s Name

Limitorque, a Flowserve Company

Manufacturer’s Address

5114 Woodall Road

Lynchburg, VA 24502

Importer’s Name

Limitorque, a Flowserve Company

Importer’s Address

Abex Road Newbury Berkshire, RG14 5EY England

Type and Description of Equipment

Valve Actuators

Model Number

LY Series

Note

Tested with Limitorque products only

I, the undersigned, hereby declare that the equipment speciﬁed above conforms to the above Directive(s) and Standard(s). List as follows:

(Signature)

Barry Morse (Full Name)

Internal Sales Manager (Title)

Newbury, England (Place)

November 1, 1999 (Date)

6262

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11

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FCD LMENIM1501-00 Printed in USA. (Replaces LMAIM1501)

To find your local Flowserve representative:

For more information about Flowserve Corporation, visit www.flowserve.com or call USA 1 800 225 6989

Flowserve Corporation Flow Control

United States

Flowserve Limitorque 5114 Woodall Road P.O. Box 11318 Lynchburg, VA 24506-1318 Phone: 434-528-4400 Facsimile: 434-845-9736

England

Flowserve Limitorque Euro House Abex Road Newbury Berkshire, RG14 5EY United Kingdom Phone: 44-1-635-46999 Facsimile: 44-1-635-36034

Japan

Limitorque – Nippon Gear Co., Ltd. NOF Bldg. 9th Floor 1-11-11, K i t a - S aiwai, N ishi-K u Yokohama (220-0004) Japan Phone: 81-45-326-2065 Facsimile: 81-45-320-5962

Singapore

Flowserve Limitorque 12, Tuas Avenue 20 Singapore 638824 Phone: 65-6868-4628 Facsimile: 65-6862-4940

Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide speciﬁc data and warnings for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/ user should read and understand the Installation Operation Maintenance (IOM) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in connection with the speciﬁc application.

While the information and speciﬁcations contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certiﬁed or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its product design, the speciﬁcations, dimensions and information contained herein are subject to change without notice. Should any question arise concerning these provisions, the purchaser/user should contact Flowserve Corporation at any one of its worldwide operations or ofﬁces.

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China

Limitorque Beijing, Pte., Ltd. RM A1/A 2 22/F, East Area, Hanwei Plaza No. 7 Guanghua Road, Chaoyang District Beijing 100004, Peoples Republic of China Phone: 86-10-5921-0606 Facsimile: 86-10-6561-2702

India

Flowserve Limitorque, Ltd. Plot No 4 Export Promotional Industrial Park Whitefield, Bangalore 560066 India Phone: 91-80-40146200 Facsimile: 91-80-28410286

Flowserve LY User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual