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
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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
g
et the latest cop
y
.
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
g
e, and
(
ii
)
invalidate product certifications or listin
g
s.
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
g
et the latest cop
y
.
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
Copyright © Woodward, Inc. 2018-2023
All Rights Reserved
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Manual 35128 ELA21/28 Lubrication Procedure
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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
y
also be needed for safet
y
, 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
g
fluid
(
s
)
and compl
y
with recommended safet
y
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
g
innin
g
an
y
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
y
. Woodward lubrication kits are available.
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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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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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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
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