Woodward ELA 21 User manual

Product Manual 35128

(Revision A, 8/2023)

Original Instructions

Electric Large Actuator (ELA) 21 and ELA 28

Lubrication Procedure

Installation and Operation Manual

Released

General

Precautions

Read this entire manual and all other publications pertaining to the work to be

performed before installing, operating, or servicing this equipment.

Practice all plant and safety instructions and precautions.

Failure to follow instructions can cause personal injury and/or property damage.

Revisions

This publication may have been revised or updated since this copy was produced.

The latest version of most publications is available on the Woodward website.

http://www.woodward.com

If your publication is not there, please contact your customer service

representative to

et the latest cop

Proper Use

Any unauthorized modifications to or use of this equipment outside its specified

mechanical, electrical, or other operating limits may cause personal injury and/or

property damage, including damage to the equipment. Any such unauthorized

modifications: (i) constitute "misuse" and/or "negligence" within the meaning of

the product warranty thereby excluding warranty coverage for any resulting

dama

e, and

(

)

invalidate product certifications or listin

Translated

Publications

If the cover of this publication states "Translation of the Original Instructions"

please note:

The original source of this publication may have been updated since this

translation was made. The latest version of most publications is available on the

Woodward website.

www.woodward.com/publications

Always compare with the original for technical specifications and for proper and

safe installation and operation procedures.

If your publication is not on the Woodward website, please contact your customer

service representative to

et the latest cop

Revisions— A bold, black line alongside the text identifies changes in this publication since the

last revision.

Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is

believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly

undertaken.

Manual 35128

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Manual 35128 ELA21/28 Lubrication Procedure

Woodward 1

Contents

WARNINGS AND NOTICES ............................................................................................................... 2

ELECTROSTATIC DISCHARGE AWARENESS...................................................................................... 3

REGULATORY COMPLIANCE ............................................................................................................ 4

CHAPTER 1. LUBRICATION PROCEDURE .......................................................................................... 5

Introduction ................................................................................................................................................... 5

Grease Kit Contents...................................................................................................................................... 6

Grease Port Locations .................................................................................................................................. 6

Gear and Bearing Lubrication Procedure (Ports 1-5) ................................................................................... 7

Roller Screw Lubrication Procedure (Port 6) ................................................................................................ 8

CHAPTER 2. PRODUCT SUPPORT AND SERVICE OPTIONS ................................................................ 9

Product Support Options............................................................................................................................... 9

Product Service Options ............................................................................................................................... 9

Returning Equipment for Repair ................................................................................................................. 10

Replacement Parts...................................................................................................................................... 11

Engineering Services .................................................................................................................................. 11

Contacting Woodward’s Support Organization ........................................................................................... 11

Technical Assistance .................................................................................................................................. 12

REVISION HISTORY ....................................................................................................................... 13

The following are trademarks of Woodward, Inc.:

Woodward

Illustrations and Tables

Figure 1-1. Grease Port Locations................................................................................................................ 6

Figure 1-2. Greasing Technique ................................................................................................................... 7

Figure 1-3. Roller Screw Assembly Lubrication ............................................................................................ 8

No table of figures entries found.

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Warnings and Notices

Important Definitions

This is the safety alert symbol used to alert you to potential personal injury hazards. Obey all

safety messages that follow this symbol to avoid possible injury or death.

DANGER - Indicates a hazardous situation, which if not avoided, will result in death or serious injury.

WARNING - Indicates a hazardous situation, which if not avoided, could result in death or serious

injury.

CAUTION - Indicates a hazardous situation, which if not avoided, could result in minor or moderate

injury.

NOTICE - Indicates a hazard that could result in property damage only (including damage to the

control).

IMPORTANT - Designates an operating tip or maintenance suggestion.

Overspeed /

Overtemperature /

Overpressure

The engine, turbine, or other type of prime mover should be

equipped with an overspeed shutdown device to protect against

runaway or damage to the prime mover with possible personal injury,

loss of life, or property damage.

The overspeed shutdown device must be totally independent of the

prime mover control system. An overtemperature or overpressure

shutdown device ma

also be needed for safet

, as appropriate.

Personal Protective

Equipment

The products described in this publication may present risks that

could lead to personal injury, loss of life, or property damage.

Always wear the appropriate personal protective equipment (PPE) for

the job at hand. Equipment that should be considered includes but is

not limited to:

Eye Protection

Hearing Protection

Hard Hat

Gloves

Safety Boots

Respirator

Always read the proper Material Safety Data Sheet (MSDS) for any

workin

fluid

(

)

and compl

with recommended safet

equipment.

Start-up

Be prepared to make an emergency shutdown when starting the

engine, turbine, or other type of prime mover, to protect against

runaway or overspeed with possible personal injury, loss of life, or

property damage.

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Electrostatic Discharge Awareness

Electrostatic

Precautions

Electronic controls contain static-sensitive parts. Observe the

following precautions to prevent damage to these parts:

Discharge body static before handling the control (with power to

the control turned off, contact a grounded surface and maintain

contact while handling the control).

Avoid all plastic, vinyl, and Styrofoam (except antistatic

versions) around printed circuit boards.

Do not touch the components or conductors on a printed circuit

board with your hands or with conductive devices.

To prevent damage to electronic components caused by improper

handling, read and observe the precautions in Woodward manual

82715

, Guide for Handling and Protection of Electronic Controls,

Printed Circuit Boards, and Modules.

Follow these precautions when working with or near the control.

1. Avoid the build-up of static electricity on your body by not wearing clothing made of synthetic

materials. Wear cotton or cotton-blend materials as much as possible because these do not store

static electric charges as much as synthetics.

2. Do not remove the printed circuit board (PCB) from the control cabinet unless absolutely necessary.

If you must remove the PCB from the control cabinet, follow these precautions:

Do not touch any part of the PCB except the edges.

Do not touch the electrical conductors, the connectors, or the components with conductive

devices or with your hands.

When replacing a PCB, keep the new PCB in the plastic antistatic protective bag it comes in

until you are ready to install it. Immediately after removing the old PCB from the control cabinet,

place it in the antistatic protective bag.

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Regulatory Compliance

Regulatory Compliance and Declaration information is contained in

Manual 35033 for the ELA 28 and Manual 35107 for the ELA 21.

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Chapter 1.

Lubrication Procedure

Introduction

The only maintenance required for the ELA is lubricating the roller screw, gears, and bearings every

32,000 hours in accordance with the descriptions below.

Explosion Hazard

Do not remove covers or connect/disconnect electrical connectors

unless power has been switched off or the area is known to be non-

hazardous

Substitution of components may impair suitability for Class 1,

Division 2 or Zone 2 applications.

To prevent possible serious personal injury, or damage to equipment,

be sure all electric power, hydraulic pressure, and gas pressure have

been removed from the actuator before be

innin

maintenance.

Lift or handle the actuator only by using the specific lifting locations

as noted on the installation drawing. The product weight is stated in

the specifications section.

Due to typical noise levels in turbine environments, hearing

protection should be worn when working on or around the electric

actuator.

Never put your hands near the output shaft. There are moving

components with sharp edges, tight clearances, and large closing

forces. Actuator position should only be verified by using the visual

position indicator on the side of the actuator clevis.

The surface of this product can become hot enough or cold enough to

be a hazard. Use protective gear for product handling in these

circumstances. Temperature ratings are included in the specification

section of this manual.

Use only Woodward-approved grease to lubricate the roller screw,

gears and bearing in this actuator. Use of any other grease will reduce

performance and reliabilit

. Woodward lubrication kits are available.

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Manual 35128 ELA21/28 Lubrication Procedure

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This procedure contains instructions on the proper techniques and equipment for proper lubrication of the

Electric Linear Actuator (ELA). Images illustrate where the grease ports are located and the adaptor

properly installed in the actuator to ensure efficient and effective application of adequate lubricants to

keep the ELA working according to manufacturer’s specifications. Prior to beginning the procedure,

Figures 7-2 and 7-3 show you where the grease ports are located.

Grease Kit

This kit will arrive in a bag with a part number and revision number printed on the outside of the bag.

Each kit contains multiple syringes with a premeasured amount of grease. Do not refill the syringes.

Please refer to the product manual for the correct grease kit part number or contact your Woodward

service provider to confirm the recommended grease kit. The correct grease kit should be used for each

corresponding actuator, ensuring that grease is not cross contaminated.

For the shallow grease ports represented in Figures 1-1 and 1-2, insert the syringe with the adapter

attached and depress the plunger until the recommended volume of grease is dispensed into the grease

port. Reuse the adaptor for each syringe during the greasing operation.

Grease Port Locations

The ELA has six grease ports: two ports on the side, two ports on top, and one port on the bottom of the

actuator base. Use these to lubricate the gear and bearing assembly. One port (Grease Port 6, Fig. 1-2)

is located on the actuator body and is where to lubricate the roller screw assembly.

Figure 1-2 shows the locations of these ports. All of the plugs require a ¼-inch hex wrench to remove

them prior to installing the re-greasing adaptor 1249-1338.

Figure 1-1. Grease Port Locations

There are two different procedures to lubricate the ELA. One is lubricating the gear and bearing assembly

and two is lubricating the roller screw assembly.

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Manual 35128 ELA21/28 Lubrication Procedure

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Gear and Bearing Lubrication Procedure (Ports 1-5)

Lubricating the Gear and Bearing Assembly (See Fig. 1-2)

1. Clean the outside of the actuator to ensure that no debris gets inside the actuator during the

lubrication process. Any debris in the gears and bearings will reduce its life.

2. Remove the plugs and inject grease into each port using the Grease Syringe 8923-2283 as displayed

in Figure 7-3 below.

3. Set the plugs aside and keep clean, ensuring that the inside plug surface is not scratched or marred.

4. Attach the thread connector of the grease syringe to the threaded bearing grease port. Fully seat the

fitting.

5. Inject 4 cm³ of Woodward approved grease into the bearing grease port.

6. Remove the grease syringe from the bearing port and install the port plug. Torque to 2.5–3.2 Nꞏm /

22–28 lb.-in.

7. Repeat this process for all five gear/bearing access ports.

Figure 1-2. Greasing Technique

Wear protective eyewear and gloves during this maintenance

procedure.

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Manual 35128 ELA21/28 Lubrication Procedure

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Roller Screw Lubrication Procedure (Port 6)

Lubricating the Roller Screw Assembly (See Fig. 1-3)

1. Clean the outside of the actuator to ensure that no debris gets inside the actuator during the

lubrication process. Any debris on the internal components will reduce its life.

2. Command the actuator to the 0% position so that the Roller Screw Port Plug will align with the Roller

Screw Grease Port per Figure 7-3.

3. Remove the roller screw port plug with a 1/4 inch hex wrench.

4. Set the plugs aside and keep clean, ensuring that the inside plug surface is not scratched or marred.

5. Attach the thread connector of the grease syringe to the threaded grease port of the roller screw.

Fully seat the fitting.

6. Inject 4 cm³ of Woodward approved grease (3901-1003) into the roller screw grease port.

7. Remove the grease syringe from the roller screw grease port and install the roller screw port plug and

torque the port plug to 2.5–3.2 Nꞏm / 22–28 lb.-in (Figure 7-1).

Figure 1-3. Roller Screw Assembly Lubrication

Released

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