Spirax Sarco AEL7T User manual

IM-P713- 04 CTLS Issue 1 1
AEL7T EN14597 Compliant Electric Linear Actuators
1. Safety information
2. General product information
3. Electrical connection
4. Installation
5. Actuator Accessories
6. Commissioning
7. Maintenance
8. Declaration of Conformity
© Copyright 2022
Printed in GB
3582950/1
AEL7T
EN14597 Compliant
Electric Linear Actuators
Installation and Maintenance Instructions
IM-P713-04
CTLS Issue 1

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AEL7T EN14597 Compliant Electric Linear Actuators

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Contents
1. Safety information 5
1.1 Wiring notes
1.2 Safety requirements and electromagnetic compatibility
6
1.3 Intended use
1.4 Access
1.5 Lighting
1.6 Hazardous liquids or gases in the pipeline
7
1.7 Hazardous environment around the product
1.8 The system
1.9 Pressure systems
1.10 Responsibilities of the operator and operating (including maintenance) personnel
1.11 Temperature
1.12 Tools and consumables
1.13 Protective clothing
1.14 Permits to work
8
1.15 Handling
1.16 Safe lifting practice
1.17 Residual hazards
1.18 Disposal
1.19 Responsibilities of the operator and operating (including maintenance) personnel
9
1.20 Qualied Personnel
2. General product information 10
2.1 Description
2.2 Identication of products in the AEL7T range 11
2.3 Operating principle 12
2.4 EN14597 Compliance 13
3. Installation 14
3.1 Electrical Connection Safety Information
3.2 Removing the Actuator Cover
15
3.3 Making the Electrical Connection
3.4 Electrical Connection 16

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4. Installation 18
4.1 Location
4.2 Operational Considerations – End Position and Stroke Settings
19
4.3 Manual Override
4.4 Coupling the actuator to a Valve 20
4.5 Setting the end position 23
5. Actuator Accessories 27
5.1 Actuator Accessory Safety Information
5.2 Auxiliary Travel Switches 28
5.3 Potentiometer 29
5.4 Positioner Card 30
6. Commissioning 31
6.1 Commissioning Safety Information
6.2 Adjustment of Auxiliary Travel Switch 32
6.3 Commissioning of Potentiometer
33
6.4 Commissioning of Positioner Card
6.5 AUTOTUNE – Quick Set-Up 36
7. Maintenance 37
7.1 Maintenance Safety Information
7.2 General Maintenance of Actuator
38
7.3 Warranty, Repair and Spare Parts
7.4 Removing the Actuator from the Valve 39
7.5 Problem Solving 40
8. Declaration of Conformity 41

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Safe operation of this product can only be guaranteed if it is properly installed, commissioned,
used and maintained by qualified personnel (see Section 1.20) in compliance with the operating
instructions. General installation and safety instructions for pipeline and plant construction, as
well as the proper use of tools and safety equipment must also be complied with.
See separate Installation and Maintenance Instructions for the control valve.
If the actuator is handled improperly or not used as specified, the resultant may:
- Cause danger of the life and limb of the third party
- Damage the actuator and other assets belonging to the owner
- Hinder the performance of the actuator
1.1 Wiring notes
Every effort has been made during the design of the actuator to ensure the safety of the user, but
the following precautions must be followed:
i) Maintenance personnel must be suitably qualified in working with equipment containing
hazardous live voltages.
ii) Ensure correct installation. Safety may be compromised if the installation of the product is
not carried out as specified in this manual.
iii) Isolate the actuator from the mains supply before opening the unit.
iv) The actuator is designed as an installation category II product, and is reliant on the building
installation for overcurrent protection and primary isolation.
v) Wiring should be carried out in accordance with IEC 60364 or equivalent.
vi) Fuses should not be fitted in the protective earth conductor. The integrity of the installation
protective earth system must not be compromised by the disconnection or removal of other
equipment.
vii) A disconnecting device (switch or circuit breaker) must be included in the building
installation.
This must be in close proximity to the equipment and within easy reach of the operator.
- There must be a 3 mm contact separation in all poles.
- It must be marked as the disconnecting device for the actuator.
- It must not interrupt the protective earth conductor.
- It must not be incorporated into a mains supply cord.
- The requirements for the disconnecting device are specified in IEC 60947-1 and
IEC 60947-3 or equivalent.
viii) The actuator must not be located in such a way that the disconnecting device is made difficult
to operate.
1. Safety information

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1.2 Safety requirements and electromagnetic compatibility
This product is marked.
It complies with the requirements of 73/23/EEC as amended by 93/68/EEC on the harmonisation of
the law of Member States relating to electrical equipment designed for use within certain voltage
limits (LVD), by meeting the standard for safety of electrical equipment for measurement control
and laboratory use. This product complies with the requirement of 89/336/EEC as amended by
92/31/EEC and 93/68/EEC on the approximation of laws of the Member States relating to
Electromagnetic Compatibility, by meeting the generic standard of emissions for an industrial
environment and the generic standard of immunity for an industrial environment. The product may
be exposed to interference above the limits of industrial immunity if:
i) The product or its wiring is located near to a radio transmitter.
ii) Excessive electrical noise occurs on the mains supply.
iii) Cellular telephones and mobile radios may cause interference if used within approximately
one metre of the product or its wiring. The actual separation necessary will vary according to
the power of the transmitter.
iv) Power line protectors (ac) should be installed if mains supply noise is likely.
v) Protectors can combine filtering, suppression, surge and spike arrestors.
For a copy of the declaration of conformity please refer to page 58.
1.3 Intended use
The AEL7 Series actuator must only be used to modulate Spirax Sarco and Gestra valves (including
Hiter). The actuator must not be used for any other purpose.
Referring to the Installation and Maintenance Instructions, name-plate and Technical Information
Sheet, check that the product is suitable for the intended use/application.
i) Check products suitability to ensure product is suitable in relation to the thrust required to
modulate and close the valve. (Refer to TI-P713-02)
ii) Check that actuator is suitable for the operating environment and insure adequate protection
is implemented when required
iii) Determine the correct installation situation.
iv) Spirax Sarco products are not intended to withstand external stresses that may be induced by
any system to which they are fitted. It is the responsibility of the installer to consider these
stresses and take adequate precautions to minimise them.
1.4 Access
Ensure safe access and if necessary a safe working platform (suitably guarded) before attempting
to work on the product. Arrange suitable lifting gear if required.
1.5 Lighting
Ensure adequate lighting, particularly where detailed or intricate work is required.

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1.6 Hazardous liquids or gases in the pipeline
Consider what is in the pipeline or what may have been in the pipeline at some previous time.
Consider: flammable materials, substances hazardous to health, extremes of temperature.
1.7 Hazardous environment around the product
Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases, extremes of
temperature, hot surfaces, fire hazard (e.g. during welding), excessive noise, moving machinery.
1.8 The system
Consider the effect on the complete system of the work proposed. Will any proposed action (e.g.
closing isolation valves, electrical isolation) put any other part of the system or any personnel at
risk? Dangers might include isolation of vents or protective devices or the rendering ineffective
of controls or alarms. Ensure isolation valves are turned on and off in a gradual way to avoid system
shocks.
1.9 Pressure systems
Ensure that any pressure is isolated and safely vented to atmospheric pressure. Consider double
isolation (double block and bleed) and the locking or labelling of closed valves. Do not assume
that the system has depressurised even when the pressure gauge indicates zero.
1.10 Responsibilities of the operator and operating (including
maintenance) personnel
The operator is responsible for ensuring that safe systems of operation and practice are
implemented and maintained. Only competent persons must be allowed to be able to operate and
maintain these devices, and these persons must be familiar with, and comply with the applicable
health and safety standards or guidelines.
The installation and maintenance instructions should form part of the standard operating
procedures for maintenance and must therefore be kept in an accessible location and in a legible
condition.
Product identification and safety related labels must also be kept in a clean and legible condition.
Identification and safety labels must be replaced if they become damaged or obscured in operation.
1.11 Temperature
Allow time for temperature to normalise after isolation to avoid danger of burns.
The actuator must not be insulated. When coupled to a valve operating on high temperature media,
if there is a risk of burning through handling (intentional or accidental), it is recommended that
suitable methods of prevention are implemented e.g. machine or a visual warning.
1.12 Tools and consumables
Before starting work ensure that you have suitable tools and/or consumables available. Use only
genuine Spirax Sarco replacement parts.
1.13 Protective clothing
Consider whether you and/or others in the vicinity require any protective clothing to protect against
the hazards of, for example, chemicals, high/low temperature, radiation, noise, falling objects, and
dangers to eyes and face.

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1.14 Permits to work
All work must be carried out or be supervised by a suitably competent person. Installation and
operating personnel should be trained in the correct use of the product according to the Installation
and Maintenance Instructions. Where a formal 'permit to work' system is in force it must be complied
with. Where there is no such system, it is recommended that a responsible person should kNow
what work is going on and, where necessary, arrange to have an assistant whose primary
responsibility is safety. Post 'warning notices' if necessary.
1.15 Handling
Manual handling of large and/or heavy products may present a risk of injury. Lifting, pushing,
pulling, carrying or supporting a load by bodily force can cause injury particularly to the back.
You are advised to assess the risks taking into account the task, the individual, the load and the
working environment and use the appropriate handling method depending on the circumstances
of the work being done.
1.16 Safe lifting practice
Never use the actuator to lift a valve. It is recommended to lift the complete valve assembly using
the correct equipment(s) and techniques so as not to cause damage or injury. Valves should be
supported under the inlet and outlet connections, not the actuator (including hand wheel or
accessories), and careful attention should be made to prevent the valve from rotating during the
lift sequence. When installed, neither the actuator, valve or its accessories should be used as a
hand hold or step for access to other parts of the plant.
1.17 Residual hazards
In normal use the external surface of the product may be very hot. If used at the maximum
permitted operating conditions the surface temperature of some products may exceed
temperatures of 90 °C (194 °F).
1.18 Disposal
Unless otherwise stated in the Installation and Maintenance Instructions, this product is recyclable
and no ecological hazard is anticipated with its disposal providing due care is taken.
Regulation (EC) No 1907/2006 -
Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
Should any substances of very high concern be found within a product, details of the location will
be identified within the Technical Information Sheet.
Further information about product compliance is be available at www.spiraxsarco.com/product-
compliance

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1.19 Responsibilities of the operator and operating
(including maintenance) personnel
The operator is responsible for ensuring that safe systems of operation and practice are
implemented and maintained. Only competent persons must be allowed to be able to operate and
maintain these devices, and these persons must be familiar with, and comply with the applicable
health and safety standards or guidelines.
The installation and maintenance instructions should form part of the standard operating
procedures for maintenance and must therefore be kept in an accessible location and in a legible
condition. Product identification and safety related labels must also be kept in a clean and legible
condition. Identification and safety labels must be replaced if they become damaged or obscured
in operation.
1.20 Qualified Personnel
The operator is responsible for ensuring that safe systems of operation and practice are
implemented and maintained. Only qualified personnel must be allowed to make the electrical
power connections to the AEL7 Series actuator, and these personnel must be familiar with, and
comply with the applicable health and safety standards or guidelines. Failure to do so could result
in death, severe physical injuries or material damages to the actuator, valve and associated
equipment.
Suitably qualified personnel are those who are familiar with the set-up, installation, commissioning
and operation of the AEL7T and associated valves. Personnel should be suitably qualified through
their activity:
-Training and authority to switch on and off power circuits
-Training to the relevant safe standard of electrical practice and the knowledge to correctly
earth and mark electrical connections
-Training in first aid and the use of associated safety equipment
Copyright © Spirax-Sarco Limited 2022
All rights reserved
Spirax-Sarco Limited grants the legal user of this product (or device) the right to use the
Work(s) solely within the scope of the legitimate operation of the product (or device). No
other right is granted under this licence. In particular and without prejudice to the generality
of the foregoing, the Work(s) may not be used, sold, licensed, transferred, copied or
reproduced in whole or in part or in any manner or form other than as expressly granted
here without the prior written consent of Spirax-Sarco Limited.

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2.1 Description
AEL7T series electric linear actuators are only suitable for the use on Spirax Sarco, Gestra and Hiter Valves.
Refer to TI-P713-02 for product compatibility and linkage requirements. The AEL7T Series actuators must
not be used for any other purpose. Actuators will normally be supplied fitted to the control valve. When
supplied separately, ensure the actuator selected is capable of providing the force necessary to close the
two-port or three-port control valve against the expected differential pressure. See the appropriate product
specific Technical Information Sheet for full details of the control valve.
2. General product information
Fig. 1

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2.2 Identification of products in the AEL7T range
Actuator A-
Type EElectric
Action LLinear
Series 7-
Thrust
11.2 kN 0.9 kN for AEL71T
22.0 kN 2.1 kN for AEL72T
Nominal Stroke 230 mm
Supply Voltage
1230 Vac
2115 Vac
324 Vac
Speed 1Low 0-0.7mm/s
Control Signal
FVMD 24Vac
GVMD 110 Vac
JVMD 230 Vac
PModulating (0)4-20 mA/0(2)-10V Positioner
Failure Mode TSpring Non-retrofit option. Not available for 24 Vdc
Potentiometer
XNone
APotentiometer 1 x 1000Ω

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Fig. 2 General Arrangement of Actuator and Gearbox
Motor
Clutch
Electro-Magnet
2.3 Operating principle
The AEL7T Series is a range of linear electric actuators of various voltages and thrusts suitable for the
modulation of Spirax Sarco Group valves either by means of VMD or modulating signal. Independent of the
control method, the actuators typically uses stroke dependent (travel) switches to determine the end position
of the actuator stroke in both directions and stop the actuator motor.
The potentiometer and positioner card (when fitted) are set to a predetermined stroke at the factory. This
can be adjusted locally in order to suit the respective valve and provide optimum position control or feedback.
AEL7T versions have an integrated spring extend shut down capability. A maintained electrical supply
operates an electromagnet which disengages a clutch mechanism. Disengaging the clutch allows the actuator
to be modulated in response to the selected drive signal (VMD or modulating). In the event that power supply
is interrupted, the electro-magnet is released allowing an internal spring mechanism to engage the clutch
and drive the actuator windings to extend the spindle through its full travel.
Caution
A power supply must never be connected to the actuator whilst the spring shut down
mechanism is in operation. This will lead to permanent damage to the gearbox. Do not use
the DOWN travel button to set seat loading. This will lead to permanent damage to the valve
seat.
AEL7T actuators use a stroke dependent switch to determine end position. Care must be
taken with the setting of these switches in order not to damage either valve or actuator.

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Fig. 3 Clutch Engaged Fig. 4 Clutch Disengaged
Clutch couplings engaged Clutch couplings disengaged
2.4 EN14597 Compliance
The AEL7T Series actuator complies with EN14597 (2012) temperature control devices and temperature
limiters for heat generating systems.
To comply with EN14597 (2012), as an electromagnetic device, the AEL7T actuator shall be suitable for
continuous operation at VR +10% and the highest permissible ambient temperature. The actuator shall
automatically close at a voltage level of VR -70% (i.e. the point at which the actuator clutch will disengage).
Actuators are 100% factory tested before despatch in order to guarantee complete compliance with the
standard.
When coupled with DN15 - 100 (Ø1/2”- 4”) Spira-trol™ “K” or “L” Series valves (all body materials and
connections) with seat type “T” (431 stainless steel) or seat type “P” (full PEEK), the complete valve assembly
conforms to EN14597 (2012).
Use of all other seat types is not permitted for EN14597 (2012) applications. Refer to TI-P713-02 for details.

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Warning
The AEL7T Series actuator requires electrical connection to be made before it is possible
to couple the actuator to a valve. Therefore the electrical connection must be made and the
actuator cover replaced to make the unit safe to handle for the coupling stage.
3.1 Electrical Connection Safety Information
Caution
Before commencement of any work to make the electrical please read to Section 1 “Safety
Information”.
Warning
Mains connection and commissioning of the AEL7 Series actuator requires specialist
knowledge of electrical circuits and systems, and the inherent dangers. A working knowledge
of linear actuators is also required.
The operator is responsible for ensuring that safe systems of operation and practice are
implemented and maintained. Only qualified personnel must be allowed to make the electrical
power connections to the AEL7 Series actuator, and these personnel must be familiar with,
and comply with the applicable health and safety standards or guidelines. Failure to do so
could result in death, severe physical injuries or material damages to the actuator, valve
and associated equipment.
-Ensure that the electrical power supply is isolated
-Safeguard against the unintentional switching on by ensuring that there is a safe system
of practice in operation – e.g. lock the electrical supply isolator
-Ensure that any installation of any new power supply is compliant with local regulations
-Check the mains connection voltage and frequency for conformity to the actuator. Details
of the requirements are identified on the AEL7 Series actuator nameplate which can
be found on the actuator baseplate
-Ensure that the power supply cable is of the correct cross section for the maximum
expected load. Details of the requirements are identified on the AEL7 Series actuator
nameplate which can be found on the actuator baseplate, and in the Technical
Information Sheet (TI-P713-02)
-Minimum cross section for the power supply cable is 1 mm2. Conductors below this
area can result in operational disturbances
-Ensure that the power supply is correctly fused for the maximum expected load. Details
of the requirements for each AEL7 Series actuator can be found in Table 1
3. Electrical Connections

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Table 1 Actuator Power Consumption
Actuator
Nomenclature
Thrust
(kN)
Spindle
Speed
Voltage
(Vac)
Motor Power
Consumption
(W)
Maximum
Current
(A)
Magnet Power
Consumption
(W)
AEL71T 0.9
0.29 mm/s
230 Vac 2.7 0.026
15
115 Vac 2.7 0.052
24 Vac 2.8 0.255
AEL72T 2.1
230 Vac 2.7 0.026
115 Vac 2.7 0.052
24 Vac 2.8 0.255
3.2 Removing the Actuator Cover
Remove the cover retaining nut and gasket (16mm A/F socket). Gently ease the cover up and off
the ingress seal.
When replacing the cover ensure that location thread and cover are correctly aligned. Gently
lower the actuator cover until it meets the ingress seal. Firmly press down the actuator cover
with several small clockwise and anti-clockwise movements of the cover to ensure correct
engagement. Refit gasket and top nut and tighten to 2.5Nm.
3.3 Making the Electrical Connection
A terminal diagram for the actuator can be found inside the actuator cover and this issue of the Installation
and Maintenance Instructions. The operator is responsible for ensuring that safe systems of operation and
practice are implemented and maintained and the installation and maintenance instructions should form part
of the standard operating procedures for maintenance and must therefore be kept in an accessible location
and in a legible condition.
With the power supply safely isolated and the actuator cover removed:
-Remove the blanking caps and fit the correct cable glands for the location. Dispose of the blanking caps
responsibly
-Feed the electrical power supply cable through the cable gland until enough length exists within
the actuator to make all of the necessary connections easily
-Mark the power supply cable approximately 10 mm above the actuator base plate, remove from the gland
and carefully strip the outer casing and wrapping. Dispose of the waste responsibly
-Strip the individual cores at a length of approximately 5mm from the end, and once the correct lengths
of the individual cores has been established, the ends should be crimped with the correctly sized and
insulated crimp terminals (flat or pin type)
-Guide the cores of the power supply cable through the gland sleeve and gland, and connect the cores
to the actuator terminals as identified in the terminal diagrams below (or in the cover of the actuator)
taking care to ensure that the routing of the cores protects them from damage of moving parts or from
damage when replacing or removing the actuator cover

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3.4 Electrical Connection
See below for all AEL7T actuator electrical connections unless otherwise stated
Power Supply (Vac) Modulating Signal Options
VMD Setpoint Position Feedback Heater Potentiometer Position Switches
2 3 40 N54 55 57 56 59 58 60 61 7 8 25 26 27 16 17 18 19 20 21
▲ ▼ - - - - - - ▲ ▲ -▼ ▼ - - ▲-▼- - - - - -
L+ L- L1 NPE L N GND V+ mA+ GND mA+ V+ L N L GND S+ (NC) COM (NO) (NC) COM (NO)
Direction Open
Direction Close
Maintained Live
Neutral
Earth
Live
Neutral
Ground
Control Voltage
Control mA
Ground
Active Position feedback mA+
Active Position feedback V+
Heater
Feedback signal (passive)
Potential free position Switch S3
Potential free position Switch S4
Fig.5 AEL7T actuator electrical connections

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3.4 Electrical Connection
See below for all AEL7T actuator electrical connections unless otherwise stated
Power Supply (Vac) Modulating Signal Options
VMD Setpoint Position Feedback Heater Potentiometer Position Switches
2 3 40 N54 55 57 56 59 58 60 61 7 8 25 26 27 16 17 18 19 20 21
▲ ▼ - - - - - - ▲ ▲ -▼ ▼ - - ▲-▼- - - - - -
L+ L- L1 NPE L N GND V+ mA+ GND mA+ V+ L N L GND S+ (NC) COM (NO) (NC) COM (NO)
Direction Open
Direction Close
Maintained Live
Neutral
Earth
Live
Neutral
Ground
Control Voltage
Control mA
Ground
Active Position feedback mA+
Active Position feedback V+
Heater
Feedback signal (passive)
Potential free position Switch S3
Potential free position Switch S4

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Before considering installation of an AEL7 Series actuator please read to Section 1 “Safety
Information” on page 5.
-Installation awareness
-Lifting and fitting of actuators increases the risk of personal injury
-Mains connection and commissioning of the AEL7 Series actuator requires specialist
knowledge of electrical circuits and systems, and the inherent dangers. A working
knowledge of linear actuators is also required.
-Risk of injury by moving parts. Ensure that that the control system is disabled and the
electrical power supply is isolated to ensure that the valve and actuator do not move
without warning.
- The incorrect use of power supplies to assist the installation, commissioning and
maintenance of electrically actuated valve assemblies increases the risk of personal
injury.
-Lifting and fitting or actuators increases the risk of personal injury
-Crush hazard
When actuators are to be fitted using lifting equipment always ensure that the actuator
is carefully slung in order that it cannot fall. Never attempt to remove a control valve
from the line by using the actuator as the lifting point. The actuator or the lifting
equipment could become damaged.
Never stand under components that are being lifted. Head safety protection must always
be worn when operating on or close to equipment where lifting operations are taking
place.
Do not place hands within the actuator yoke or on the stem when isolation of the
electrical power supply has been removed.
Do not attempt to restrict actuator stroke or movement, or increase seat load through
the placing of objects within the actuator yoke. This practice could also result in the
loss of sight.
-Warning
Muscular skeletal damage
For small actuators that do not require mechanical lifting aids, always ensure that
manual lifting best practice is observed. Always use two personnel where possible and
ensure that proper access is available in order to ensure a secure foothold.
4.1 Location
The actuator should be mounted above the valve and provide sufficient space to remove the cover and
provide general ease of access. The actuator can be mounted in a vertical pipe, however this orientation
should be avoided wherever possible. When selecting the location, make sure that the actuator is not exposed
to an ambient temperature exceeding the range 0 °C to + 50 °C.
The actuator enclosure is rated at IP54, but only when the lid is correctly fitted. It is recommended that
adequate shelter is provided for outdoor installations. For internal installations where there is a risk of
condensation a condensate heater should also be installed. Refer to Technical Information Sheets for details
(TI-P713-02).
4. Installation

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4.2 Operational Considerations –
End Position and Stroke Settings
The AEL7T actuators require a stroke dependent (travel) switch to be set prior to commissioning the actuator.
This is an important difference to the standard AEL7 Series without integrated spring shut down.
End position is set by a combination of spring pressure and stroke dependent switch in the
extend position, and stroke dependent switch only for the actuator retract position. Refer to
Section 4.5 for details.
Stroke settings for new actuators are identified in Table 2. Optional auxiliary switches, when fitted, do not
impact actuator stroke.
Table 2 Actuator Stroke Setting
Actuator Thrust ( kN) Maximum Stroke
(mm)
Set Stroke (mm)
Positioner or Potentiometer
AEL71T 0.9 35 30
AEL72T 2.1 35 30
4.3 Manual Override
The AEL7T is not available with a manual override. The actuator is classified as a safety device
(EN14597_2012) and therefore in the absence of an electrical power supply, the valve must remain in a
closed (safe) position.
The actuator can be moved by use of two push buttons located on the underside of the actuator base plate.
Movement of the actuator requires the power supply to be connected.
Fig. 6 Travel Push Buttons
UP DOWN

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4.4 Coupling the actuator to a Valve
The operator is responsible for ensuring that safe systems of operation and practice are implemented and
maintained. Only competent persons must be allowed to be couple the AEL7T Series actuator to a valve,
and these persons must be familiar with, and comply with the applicable health and safety standards or
guidelines.
Warning
The AEL7T Series actuator requires electrical connection to be made before it is possible
to couple the actuator to a valve. Therefore the electrical connection must be made and the
actuator cover replaced to make the unit safe to handle for the coupling stage.
Warning - crush hazard Risk of injury by moving parts.
Ensure that the control system is disabled and the electrical power supply is isolated when
not required during the assembly process to ensure that the valve and actuator do not move
without warning. The incorrect use of power supplies to assist the installation, commissioning
and maintenance of electrically actuated valve assemblies increases the risk of personal
injury. Do not place hands within the actuator yoke or on the stem when isolation of the
electrical power supply has been removed. Do not attempt to restrict actuator stroke or
movement, or increase seat load through the placing of objects within the actuator yoke.
This practice could also result in the loss of sight. Only competent engineers should attempt
the coupling of AEL7T actuator to a valve.
In the state of delivery, the AEL7T will always be in the maximum spindle extend position
as a result of the spring shut down system being extended without power supply connected.
Consult TI-P713-02 ensure you have the correct valve and actuator for your application.
With the actuator correctly connected (as per Section 3 – Electrical Connections), safely isolated and the
actuator cover correctly fitted:
-Remove the actuator retaining nut from the valve and place the mounting flange over the valve bonnet
thread
-Refit the actuator retaining nut and tighten (50 Nm for M34 or 100 Nm for M50)
-Remove the actuator pillar nuts
-Untighten the four screws and remove the valve adapter locking plate, anti-rotation plate and valve
adapter bush from the actuator
-Place the locking plate and the anti-rotation plate over the valve stem
-Set the valve stem lock nut at the correct Thread Engagement dimension “A” (Fig. 7 and Table 3) for the
relevant valve and actuator combination and thread the valve adaptor bush up to the lock nut