TRIAC 2R Series Installation & Maintenance Manual
2rkb0040; 2rkb0080; 2rkb0130; 2rkb0200; 2rkb0300; 2rkb0500; 2rkb0850; 2rkb1200; 2rkb1750; 2rkv0040; 2rkv0080;2rkv0130; 2rkv0200; 2rkv0300; 2rkv0500; 2rkv0850; 2rkv1200; 2rkv1750; 2rklt0040; 2rklt0080; 2rklt0130; 2rklt0200; 2rklt0300; 2rklt0500; 2rklt0850;
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Table of Contents
TRIAC
2R Series Actuators:
Attention: Instructional videos on some of the information provided below can be found on our website
Description
Installation of Actuator
Air Supply
Lubrication
Operation – Double Acting
Operation – Spring Return FCW
Actuator Testing
actuator
2. Air Supply:
Pneumatic piping to the actuator and associated accessories should follow the best practices for instrument
pneumatic piping systems, ie line free of water, oil, pipe sealant or other contaminants. The operating medium
is to be filtered dry air or inert gas which is filtered to 50 micron particles size or less. It is extremely important
that the actuator be powered with the proper air pressure and air volume. Maximum working pressure is 150
PSI.
The spring housing on spring return actuators, if not piped, will breathe through the right hand port. It's
important that it not be exposed to a corrosive atmosphere. Please contact Triac Controls for possible
solutions if this condition exists.
3. Lubrication:
Triac actuators are factory lubricated for life and additional lubrication is not normally required. However, for
actuators performing 100,000 cycles or more, an oil mist lubricator is recommended. Oil mist lubrication
requires a mineral oil type ISO VG32 Class 1 for usage in temperature range 15 to 158 Deg. F. Oil mist
lubricator must be set to the lowest setting. Once begun, the oil mist lubrication cannot be discontinued.
Caution: If the actuator is equipped with a pneumatic positioner or pneumatic controller, oil mist lubricated air
cannot be used unless the instrument manufacturer indicates that the instrument is compatible with lubricated
air.
www.atcontrols.com
www.atcontrols.com (http://www.a-tcontrols.com/videos/).
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Installation & Maintenance Manual
1. Installation of Actuator:
Triac actuators are mounted directly to valves or adapted
to the valve by means of an intermediate bracket and
coupler. The coupler adapts the output of the actuator to
the valve shaft. Standard mounting kits provide mounting
of the actuator in the direction of the pipe. Pipelines can
be horizontal, vertical, or other positions. When mounting
the actuator to a valve using a mounting kit, the pinion
drive, coupling device and valve stem should be centered
and concentric to prevent any side loading to the bottom
pinion radial bearing and valve stem seal area.
After mounting, it may be necessary to adjust the end of
travel stop for proper open or closed valve position.
Pneumatically stroke the actuator several times to assure
proper operation with no binding of the coupler.
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Engineering\documents\products\IOM\IOM1003.docx
RACK & PINION ACTUATORS
2R40 to 2R1750 Series
October 24, 2013
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Table of Contents
Related Manuals for TRIAC 2R Series
Summary of Contents for TRIAC 2R Series
- Page 1 PSI. The spring housing on spring return actuators, if not piped, will breathe through the right hand port. It’s important that it not be exposed to a corrosive atmosphere. Please contact Triac Controls for possible solutions if this condition exists.
- Page 2 2R40 to 2R1750 Series Installation & Maintenance Manual 4. Travel Adjustment: The Triac 2nd generation rack & pinion actuators have travel stop adjustments in both the clockwise and counterclockwise directions. The 5 degrees overtravel feature provides adjustments from -5 degrees to +5 degrees at the 0 degree clockwise position and from 85 degrees to 95 degrees at the 90 degree counterclockwise position.
- Page 3 RACK & PINION ACTUATORS 2R40 to 2R1750 Series Installation & Maintenance Manual Operation – Double Acting: CCW: Air is supplied to Port A forcing the pistons away Air is supplied to Port B forcing the pistons toward from each other (toward ends) which rotates the each other (toward center) which rotates the drive drive pinion counterclockwise and exhausts the air pinion clockwise and exhausts the air out of Port A.
- Page 4 It will slip off the pinion prior to the pinion removal. Take care to ensure the pinion does not damage the body. 9. Assembly Instructions Inspection: Check that all components are clean and have not been damaged. Triac recommends that all O- rings, Bearings, Washers, etc are replaced using only Triac replacement parts. October 24, 2013 Engineering\documents\products\IOM\IOM1003.docx www.atcontrols.com...
- Page 5 RACK & PINION ACTUATORS 2R40 to 2R1750 Series Installation & Maintenance Manual Installing the Pinion: Lightly grease the pinion, o-ring grooves and guide bushing groove of the pinion and pinion o-rings with multi-purpose grease. Install the top bearing into the actuator body bearing bore. Fit the top o- ring into the top pinion groove.
- Page 6 RACK & PINION ACTUATORS 2R40 to 2R1750 Series Installation & Maintenance Manual End Cap Installation: With the pistons together, lightly grease the end cap o-rings with multi-purpose grease. Grease the ends of the body bore and the end caps. Install the o-rings into the groove in the end caps. Spring Return Unit Install the correct number of springs for the desired torque output.
- Page 7 RACK & PINION ACTUATORS 2R40 to 2R1750 Series Installation & Maintenance Manual 12. Bill of Materials: Note: Spring Cartridges are for spring return actuator only Description Material Remarks Cylinder Body Aluminum Hard Anodized Drive shaft/Pinion Steel Electroless Nickel Plated Bottom Pinion Bushing*** Nylon Bottom Pinion O-Ring***...
- Page 8 13. Service: It is the policy of Triac to give the best possible service to our customers. We are happy to assist you in any way we can. If you have any questions about Triac Actuators or other Triac products please contact A-T Controls or your local Triac Distributor.
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