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I-Tork PDS Pneumatic Actuator
Installation and operating manual (PDS-M0108/1010)

I-TORK PDS PNEUMATIC ACTUATOR

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Installation & Operation Manual

(I-TORK PDS Series Pneumatic Actuator)

PDS-M0108/1010

74-6, Chun Ui-Dong, Won Mi-Gu, Bucheon, Kyoung Ki-Do, Korea

Tel : 82-2-855-1365, 66 Fax : 82-2-855-1367 E-mail :

[email protected]

Website:

www.i-tork.com

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Summary of Contents for PDS Series

Page 1: ...0108 1010 I TORK PDS PNEUMATIC ACTUATOR 1 1 1 1 Installation Operation Manual I TORK PDS Series Pneumatic Actuator PDS M0108 1010 74 6 Chun Ui Dong Won Mi Gu Bucheon Kyoung Ki Do Korea Tel 82 2 855 1365 66 Fax 82 2 855 1367 E mail roy75 i tork com Website www i tork com ...

Page 2: ... 1010 I TORK PDS PNEUMATIC ACTUATOR 2 2 2 2 Table of Contents 1 GENERAL 2 SCOTCH YOKE PRINCIPLE ADJUSTMENT 3 IMPORTANT SAFETY PROCEDURES 4 OPERATION 5 LUBRICATION REQUIREMENTS 6 APPLICATION 7 INSTALLATION PIPING 8 DISMANTLE ASSEMBLY 9 PDS50 200 PART LIST 10 TROUBLE SHOOTING ...

Page 3: ...pressure is 5 5Kg PD Pmax 8 bar 116 psi PS Pmax 7 bar 110 psi ISO Mounting Design ISO 5211 for valve flange or mounting bracket VDE 3845 Namur for solenoid valve Operating Medium Filtered inert gas or air must be used and exhaust air must be passed through silencer before being vented into the atmosphere The dew point shall be equal to 20 C or at least 10 C below the ambient temperature ISO8573 Pa...

Page 4: ...uces higher torque at both ends open and close positions compare to Rack and Pinion which has a constant output torque The standard operation ambient temperature range is 20 80 Single Acting actuators have the pistons rotated 180 for a fail close position this means any adjustment will take place in the open position If the SR actuator is set to the Fail Open position then the adjustment will take...

Page 5: ...maintenance on an Actuator Caution When removing any ball valve or plug valve assemblies from a pipe system isolate the piping system on which the Actuator is installed and relieve any media pressure that may be trapped in the valve cavities before removing the Actuator for maintenance Never use Blow Out the Pistons or the End Caps from the Actuator Body Never turn the adjusting screws completely ...

Page 6: ...ctuator will move to the Open Position Figure 2 PS Single Acting Fail Close Position Open Close fail Position When air is supplied to the left port the actuator will move to the Open Position When the air supply fails the actuator will move to the fail position Close Figure 2 PS Single Acting Fail Open Position Close Open fail position When air is supplied to the left port the actuator will move t...

Page 7: ... which has performed more than 100 000 operation cycles Recommended Lubrication Grease Parts Actuator Version Grease Cylinder Bore Shaft Sealings Standard High Temperature Dark Brown Grease ALVANIA RL2 DC111 Cylinder Bore Shaft Sealings Low Temperature White Grease DC 111 DOWCORNING 6 Application All quarter turn type valves and equipment as follows 1 Ball Valve 2 way 3 way 4 way Screw end and fla...

Page 8: ...nd required stroking time Valve Torque Characteristics seating unseating dynamic torque when applicable Maximum Allowable Stem Torque Limitation Actuator Question Air Supply Pressure Minimum and Maximum Operation On off or Control Acting Double or Single Fail Position open or close Frequency of operation Ancillary Question Limit Switches Type Voltage etc Positioners Pneumatic or Electro Pneumatic ...

Page 9: ...ns of PDS series follows international standard and as follows Top mounting hole VDI VDE3845 Top end of shaft NAMUR for installation of Limit Switch Box or Positioner Bottom Mounting Hole ISO5211 Bottom End of Shaft Double Square for Easy Mounting ISO5211 3 Piping Air Tubing All I Tork PDS actuators can be piped with solid or flexible tubing with the solenoid valve mounted remotely from the actuat...

Page 10: ...e actuator manually be sure that all compressed air is fully vented before carrying out the manual operation 6 Adjusting Screw Adjustment For Open Position 1 Operate Valve Actuator assembly to the open position 2 Remove Air supply 3 Loosen the lock nut on the adjusting screw 4 Turn the Close adjusting screw clockwise to reduce or counter clockwise to increase the travel 5 Tighten the lock nut 6 Co...

Page 11: ...he Snap Ring 21 Washer 12 Thrust Washer 11 out from the top of shaft 6 Separate the shaft 4 from the body 7 Replace the part 8 For Assembly Do the Reverse PS series Single Acting Dismantling Caution Vent all compressed air from the actuator and disconnect all electric power before dismantling 1 Loosen the adjusting screws 23 2 Using hexagonal wrench loosen 2 bolts 26 in a diagonal position on both...

Page 12: ...le Acting actuators by adding a spring pack as follows Caution Vent all compressed air from the actuator and disconnect all electrical power before dismantling If Fail Open position is required All parts are the same except for the addition of the spring pack just the PD cover needs to be replaced with the appropriate PS spring pack If Fail Closed position is required 1 Loosen the Adjusting Screws...

Page 13: ...3 Loosen the bolts 26 of the end cover separate Spring Pack from the body Spring Packs Pretension Bolt 33 Spring Washer 32 Plain Washer 31 Spring Retainer 30 Spring 29 O Ring 22 Spring Cover 28 Bolt 26 From PS 40 to PS100 Single Spring per pack There are 2 Spring Options One is for 4 2 bar pressure The other is for 5 5 bar pressure From PS 125 to PS200 Double Springs per pack There are 2 Spring Op...

Page 14: ...teel 4 Shaft Steel 15 Piston Guide Shaft Pad POM 26 HEX Head Socket Bolt Stainless Steel 5 Scotch yoke Steel 16 Support Band PTFE 27 Set Screw Stainless Steel 6 Stopper Steel 17 O Ring Piston NBR 28 Spring Return Cover Aluminum 7 Shaft Wearing POM 18 O Ring Shaft lower NBR 29 Spring Spring Steel 8 Support Ring Lower POM 19 O Ring Shaft upper NBR 30 Spring Retainer Steel 9 Support Ring Middle POM 2...

Page 15: ...ine Check air supply line Actuator is working but not smoothly Air pressure is too low Increase supply air pressure Blockage in air inlet outlet lines by foreign material Take out foreign material in the line Speed controller is locked Open speed controller Air leakage through piston ring Replace the piston ring Actual valve torque is too high 1 Increase air supply pressure 2 Replace with a larger...

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