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- Page 1 IM-P358-26 3580655 / 1 CH Issue 1 AEL5 Series Electric Linear Actuators Installation and Maintenance Instructions 1. Safety information 2. General information 3. Installation 4. Commissioning 5. Maintenance © Copyright 2012 IM-P358-26 CH Issue 1 Printed in France...
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Page 2: Safety Information
1. Safety information Safe operation of this product can only be guaranteed if it is properly installed, commissioned, used and maintained by qualified personnel (see Section 1.13) 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. -
Page 3: Intended Use
Determine the correct installation situation. iii) 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. -
Page 4: Protective Clothing
1.11 Tools and consumables Before starting work ensure that you have suitable tools and / or consumables available. Use only genuine Spirax Sarco replacement parts. 1.12 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. -
Page 5: Returning Products
1.18 Returning products Customers and stockists are reminded that under EC Health, Safety and Environment Law, when returning products to Spirax Sarco they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health, safet y or environmental risk. -
Page 6: General Information
2. General information 2.1 Use AEL5 series electric linear actuators are for use with LE, KE and JE two-port control valves, QL three-port valves and all bellows sealed options. Actuators will normally be supplied fitted to the control valve. When supplied separately, ensure the actuator selected is capable of giving the force necessary to close the two-port or three-port control valve against the expected differential pressure. -
Page 7: Manual Operation
2.2 Operation The motor rotation is transmitted through low wear and low backlash spur gears to provide linear movement of the actuator spindle. An anti-rotation plate is fitted to prevent rotation of the spindle during operation. Top and bottom travel switches are provided, which are activated by a switching rod that runs in parallel with the actuator spindle. -
Page 8: Installation
3. Installation Note: Please read Section 1, 'Safety information' before proceeding with installation. 3.1 Location The actuator should be mounted above the valve with sufficient space to remove the cover and general ease of access. When selecting the location, make sure that the actuator is not exposed to an ambient temperature exceeding the range -20°C to + 60°C (-20°C to +50°C for actuators fitted with positioners). - Page 9 9. Using the handwheel lower the actuator stem until it touches the valve stem connecting. 10. Lift the valve stem up into the actuator stem until it comes to a stop. Screw actuator stem onto the valve stem 12mm, then lock the lock nut. It is important that this operation is not carried out with the valve plug on its seat.
- Page 10 3.2.2 AEL56_ actuator connection to valve Important: Disc springs must be assembled correctly. There are 2 sets of 3 disc springs, which must be assembled in the correct order. The convex side of a spring must be assembled to the convex side of the next spring. Conversely, the concave side of the spring must be assembled to the concave side of the next spring.
- Page 11 Lift the valve stem up into the actuator connecting piece (10), until it stops. Screw the actuator connecting piece (10) onto the valve stem until it meets the lock-nut or comes to a stop (whichever is first). 10. Screw the retaining nut (11) into the actuator spindle until the returning unit is level with the housing.
- Page 12 Removing and fitting the actuator cover 3.3.1 AEL51_, AEL52_, AEL53_ and AEL54_ actuators Remove the handwheel by loosening the socket headed grub screw (3 mm A / F allen key). Hold both of the actuator pillars at the top. Using your thumbs gently ease the lid off. Note: When replacing the cover ensure that the two longest locating guides on the interior of the cover are aligned with the two recesses on the actuator housing.
- Page 13 To fit the lid ensure that it is orientated correctly. Push the cover over the handwheel shaft on the AEL55_. For the AEL56_, the operating rod for the handwheel must align with the button inside the actuator. Align the 3 fixing screws over the tapped holes in the gearbox housing. Tighten the fixing screws with a suitable screwdriver.
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Page 14: Fitting Accessories
Fitting accessories Should it be necessary to fit any accessories, the following procedure should be adopted. AEL5951 Auxiliary switches AEL5952 Feedback potentiometer 1 k W. Note: Fitted as standard. Options AEL5953 Tandem feedback potentiometer 2 x 1 k W AEL5954 Anti-condense heater (110 - 250 V) Anti-condense heater (12 - 36 V) 3.5.1 Fitting the additional limit switches All actuators can be provided with additional limit switches (Figure 11). - Page 15 3.5.2 Fitting the feedback potentiometer If a potentiometer was requested at the point of order placement the AEL5952 it will be supplied fitted as standard to the actuator. The potentiometer is located on a pre-moulded bracket. If an AEL5953 or AEL5952 needs fitting, proceed as follows: - Insert the potentiometer (19) in to the actuator pre-moulded bracket (23).
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Page 16: Wiring Details
3.5.3 Fitting the anti-condense heater Fitted in accordance with wiring diagram in Section 3.6.7, Figure 23. Location of the fixing holes as shown in Figure 13. Refer to Section 3.6.4 in order to fit the additional terminal blocks for the anti-condense heater. Feedback potentiometer mounting... - Page 17 Table 2 Fuse ratings for all variants of the AEL5_ _ _ _ actuators Fuse Fuse Actuator Power supply / frequency Actuator Power supply / frequency AEL51211 230 V 50 / 60 Hz 0.125 AEL54211 230 V 50 / 60 Hz 0.63 AEL51212 115 V...
- Page 18 X4 /16 X4 /14 Feedback potentiometer output X4 /15 (AEL5952 or AEL5953) Controller Live retract X5 /2 Live X5 /4 Live extend Neutral X5 /1 Neutral Fig. 15 VMD (Valve motor drive) connection details (see page 21 for AEL5952 / AEL5953 wiring details). 3.6.2 Models with positioner cards (4 - 20 mA signal) x5 / 1 Neutral...
- Page 19 3.6.3 Models with positioner cards (2 - 10 V signal) x5 / 1 Neutral x5 / 4 x5 / 2 Feedback position x4 / 1 x4 / 2 x4 / 3 0 - 10V signal Fig. 17 2 - 10 V connection details (Note: GND connection is isolated from the mains and earth). IM-P358-26 CH Issue 1...
- Page 20 3.6.4 Fitting an additional auxiliary switch card: - Remove the switching plate (Figures 18 and 19). - Mount the auxiliary switch card (Figure 20). - Remount the switching plate (Figure 21). Ensure the mains power is isolated. Unmount switching plate Fig.
- Page 21 3.6.5 The AEL5952 potentiometer can be used for remote indication on valve motor drive actuators, or for use with a positioner. The AEL5953 tandem potentiometer can be used for both functions simultaneously. Blue Green Yellow Blue Green Yellow Extend position Extend position Retract position Retract position...
- Page 22 4. Commissioning Actuators supplied already fitted to control valves would be supplied already commissioned. However, should it be necessary to commission an actuator, the following procedure should be adopted. 4.1 Preliminary checks - All actuators 1. Check that the actuator voltage corresponds to that required. 2.
- Page 23 Switching plate Please note that the set screws 26 and 27 are the bigger ones on the switching plate. Marking ring Fig. 26 Note: The limit switches are Fig. 27 revealed behind the switching plate. IM-P358-26 CH Issue 1...
- Page 24 Positioner (for 4 - 20 mA or 2 - 10 Vdc signals) 1. A 1000 ohm precision potentiometer must be installed in the actuator (Section 3.5.2). 2. Fit the positioner card (Section 3.4). Insert the contact pins into the left side of the terminal strip, engage the board into the retaining pegs.
- Page 25 4. Turn the potentiometers (P2, P3 and P4) to the left with the exception of the sensitivity potentiometer (P1) which should be turned to the middle position. 5. Set the 'Direction' switch to (+) (increase signal to retract spindle). Set the actuating signal to 4 mA (2 V).
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Page 26: Maintenance
Maintenance spare kits are available for the actuators. The kits contain replacement spindle nuts, 'O' rings, the correct lubricating grease, plus full instructions to carry out the inspection, lubrication / spindle nut replacement. For more information contact your local Spirax Sarco branch or distributor. - Page 27 IM-P358-26 CH Issue 1...
- Page 28 IM-P358-26 CH Issue 1...
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