ACTUATECH GS4000 Manual de instruções - Página 3
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INSTRUCTION MANUAL
SCOTCH–YOKE PART TURN PNEUMATIC ACTUATOR
GD2880 - GD8000 AND GS1440 - GS4000
FOREWORD
The present User's Installation and Maintenance Manual has been edited in conformity with:
- 2006/42/EC Directive "Machinery";
- 2014/34/UE Directive "Equipment and protection systems designated to be used in potentially explosive atmospheres" (ATEX).
The following standards/technical specifications also apply:
- EN 15714-3:2009 Industrial valves: Actuators – Pneumatic part-turn actuators for industrial valves.
- IEC 61508:2010-1/7 Functional safety of electrical/electronic/programmable electronic safety-related systems. Part 1:7
- UNI CEN/TS 764-6:2005 Pressure equipment Part 6: Operating instructions structure and contents.
Below you will find the safety instructions, the minimum information for storage / warehousing, the installation, the commissioning, the
maintenance and the instructions for disposal of products at the end of their life cycle for the pneumatic actuators:
ACTUATECH disclaims any liability for damage caused by improper use, even if partial, respect to the information contained in this
manual.
1. GENERAL FEATURES
ACTUATECH manufacture a wide range of part turn pneumatic actuators for valve remote control.
The actuators are available on Double Acting "GD" and Spring Return "GS" versions.
- The principle of the actuator application is to open and close the connected valve, without the manual operation with lever or hand
wheel, by means of an electric-pneumatic connection on remote control.
- Scotch – Yoke is a mechanical system that allows to transform the linear force into a rotary torque.
ACTUATECH applies the scotch - yoke system for its actuator production to transfer the pistons linear force to a driving shaft torque.
This system provides a long working life and best performance with the minimum energy consumption.
- ACTUATECH Scotch-Yoke system with its oblique grooves produces a torque curve with the highest torque at the start opening
operation in order to overcome the valve breakaway torque.
The maintenance should be done by ACTUATECH trained personnel only.
This instruction manual contains important information regarding the ACTUATECH Scotch-Yoke pneumatic actuator operation, in-
stallation, maintenance and storage.
Please read carefully before installation and keep it in a safe place for further reference.
2. WORKING CONDITIONS
a) Construction
Standard ACTUATECH actuators are suitable for indoor and outdoor installation. The laser marking or a printed label on the actuator
body gives the actuator technical characteristics: type, size, operating pressure, output torque, operating temperature, flange con-
nection, product code and production date (see drawing pag.5).
b) Motive energy
The operating media should be dry and filtered compressed air not necessarily lubricated or inert gases compatible with internal
actuator parts and lubricants.
The operating medium shall have a dew point equal to – 20 °C or, to be at least, 10 °C below the ambient
temperature (ISO 8573-1, Class 3). The maximum particle size shall not exceed 40 μm (ISO 8573-1, Class 5).
c) Supply operating media pressure
The maximum supply pressure is 8,4 bar (120 psi) (7 bar for GD8000)
Nominal supply pressure is 5,6 bar (80 psi), working pressure range from 2,5 bar (36 psi) up to 8,4 bar (120 psi).
ACTUATECH S.p.A
Via S. Lorenzo, 70, 25069 Villa Carcina (BS) Italy •
Ph.
+39 030 8908142 •
Fax
+39 030 8908143 • [email protected] •
www.actuatech.com
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EN -
Rif. MAN80937 - 03/22