Manual E
0901e
EDITION 2010
Pneumatic Actuators
MANUAL
Modifications reserved. Date 06.2011.
No guarantee for accuracy.
Older data sheets are invalid.
INSTALLATION, MAINTENANCE AND OPERATING INSTRUCTION MANUAL
For ACTUATORS EDITION 2010:
• DR/SC
•Double acting “DR” and Spring return “SC”
•90°-180° Stroke
1.
GENERAL
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2.
WARNING
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3.
WORKING CONDITIONS AND TECHNICAL DATA
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4.
OPERATING FUNCTION AND DIRECTION OF ROTATION P.0902e
5.
INSTALLATION INSTRUCTIONS
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6.
MAINTENANCE
INSTRUCTIONS
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7.
STORAGE
INSTRUCTIONS
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8.
LIFTING
AND
HANDLING
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9.
NOTES REGARDING THE FLANGE CONNECTION
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1. GENERAL
This instruction manual contains important information regarding the installation, operation, maintenance and storage for AIR TORQUE rack and pinion pneu-
matic actuators. Please read these instructions carefully and keep them for future reference. It is important that the use and maintenance of the actuator is
made only by properly trained personnel.
2. WARNING
•
Do not operate the actuator using inflammable, oxidizing, corrosive, explosive or unstable gases or liquids (use only not dangerous fluids – group 2 according
to 97/26/EC directive). Moreover, for actuators installed in potentially explosive zones, make sure that the internal parts of the actuator do not come into
contact with the external atmosphere.
•
Referring to the Machinery Directive 2006/46/EC, the actuators can be classified as “PARTLY COMPLETED MACHINERY” (see the DECLARATION OF
INCORPORATION). Therefore the actuator can not put into service until the machinery and/or the system, where the actuator is incorporated, will be declared
in compliance with the requirements of the Directive 2006/42/EC.
•
Air Torque actuators are designed, produced and classified according to the ATEX Directive 94/9/EC (see actuator label and safety instructions). The use of
the actuators in potential explosive atmosphere zones has to comply with the ATEX classification indicated on the actuator label and according to the ATEX
safety instructions.
•
The use, the installation and the maintenance of the Air Torque actuators must be made by adequately trained personnel. For the use, installation and main-
tenance of Air Torque actuators it is recommended to comply to the safety notice and to use proper equipment to protect health and prevent accidents.
•
It is important that the actuator is used only within the working limits indicated in the technical specifications.
•
Do not operate the actuator over temperature limits: this could damage internal and external components (disassembly of spring return actuator may become
dangerous).
•
Do not operate the actuator over pressure limits: this could damage internal parts as well as cause damage to the housing and end-caps.
•
Do not use the actuator in corrosive environments with incorrect protection: this could damage the internal and external parts.
•
Do not disassemble individual spring cartridges, this may result in personal injury. If maintenance to springs is necessary, send them to AIR TORQUE.
•
Close and disconnect all air supply lines and make sure that air connections are vented during maintenance and installation on valve.
•
Do not disassemble the actuator or remove end caps while the actuator is pressurized.
•
The 4TH GENERATION Upgrade Series actuators are designed to be used only on valves.
•
Before installing the actuator onto the valve make sure that the rotation direction and the position indicator are in the correct position.
•
If the actuator is incorporated in a system or used within safety devices or circuits, the customer shall ensure that the national and local safety laws and
regulations are observed.
3.
WORKING CONDITIONS AND TECHNICAL DATA
• Operating
media:
Dry or lubricated air or inert gases, provided that they are compatible with the actuator internal parts and lubricant. The operating media must have a dew
point equal to –20°C (-4°F) or at least 10°C below the ambient temperature. The maximum particle size contained into the operating media must not exceed
30 μm.
• Supply
pressure:
The maximum supply pressure is 8 bar (116 Psi), only for AT801U it is 7 bar (101,5 Psi).
For double acting and spring return actuators the working pressure is from 2.5 bar (36 Psi) to 8 bar (116 Psi).
• Operating
temperature:
==> “Standard” actuators from -40°C (-40°F) to +80°C (+176°F)
==> Actuators for high temperature “HT” from -15°C (+5°F) to +150°C (+300°F)
==> Actuators for extreme low temperature “LLT” from -55°C (-67°F) to + 80°C (+176°F)
Caution: for low and high temperature service, special grease and special components are required. Please contact AIR TORQUE. Working at high or low
temperature can affect the life and the output torque of the actuator.
•
Operating time (see technical data sheet):
Caution: the operating time depends on several factors such as supply pressure, supply system capacity (pipe diameter, flow capacity of pneumatic acces-
sories), valve type, valve torque and figures, applied safety factor, cycle frequency, temperature, etc.
•
Rotation and stroke adjustment (see technical data sheet):
For standard actuators (90° rotation), 120° actuators (120° rotation), 135° actuators (135° rotation) and 180° actuators (180° rotation).
Stroke adjustment at 0°(closed pistons): +15°max/ - 5°. Stroke adjustment at 90°, 120°, 135° and 180°(open pistons): +5°/-15°max. For actuator AT045U the stroke
adjustment at 90° (open pistons) is available only on request.
• Lubrication:
The actuators are factory lubricated for the life of the actuator in normal working conditions.
The standard lubricant type GSTD is suitable for use from -40°C (-40°F) to +80°C (+176°F).
For extreme low temperature (LLT) and high temperature (HT) service, special grease is required: please contact Air Torque.
•
Construction: Rack and pinion actuator design suitable for both indoor or outdoor installations.
•
Protection and corrosion resistance:
All the actuators are supplied with corrosion protection for normal environments. For corrosion resistance of the different types of protection see technical data
sheet. Before installing the actuator in aggressive environment, ensure that the selected protection level is suitable.
•
Actuator designation and marking (see technical data sheets):
The actuator type, size, operating pressure, output torque, direction of rotation, spring action, operating temperature and type of connections/interfaces are
determined by designation.
•
All AIR TORQUE actuators are supplied with an identification label showing the serial number and all necessary information on use, service, operation and
product designation. Where applicable, the label indicates the classification according to ATEX Directive 94/9/EC.
