Air Torque AT1001U Maintenance Manual Download Page 8

AIR TORQUE

 

AIR TORQUE

 

AIR TORQUE 

The 4th Generation

 

Maintenance

 

When  all  component  are  disassembled,  those  not  being  replaced  

should be properly cleaned and inspected for wear prior to being  

greased and reassembled.

 

 

6.3)  Assembly :

 

Prior to assembly, ensure all components are perfectly clean and free  

from damage.  Please see point 3 for recommended  lubricants.

 

 

A) Drive shaft assembly  (Part No. 60), figures 06 and  07:

 

•Install top and bottom pinion bearings (06) and (07) and top and bottom  

pinion O-rings  (21) and (22) onto the  shaft.

 

•Grease the outside surface of the drive shaft on  

top and bottom as shown in figure 06.

 

•Insert partially the drive shaft (60) in the body  (50), 

install octi–cam (01) in the correct position as  

shown in figure 07 related to the bottom and top  

of the drive shaft and the rotation of the actu-  

ator when energised and install internal thrust  

bearing (08). Insert completely the drive shaft in  

the body.

 

•Fit external thrust bearing (08), thrust washer (10)  

and then external circlip (18) using snap ring pliers.

 

 

B) Pistons assembly  (Part No. 40), figures 08, 09, 10 and  11:

 

•Install piston O-rings (16), the Piston skirt (05) and piston head (15) bear-  

ings.

 

•Grease the internal surface of the body (50) and the piston (40) rack  

teeth.

 

•Hold the body (50) in a horizontal position by inserting the top of the  shaft 

into a vice or the bottom of the shaft connection into a male drive  fitted 

in a vice as shown in figure 08.

 

• Ensure that the octi-cam is in the right position as shown in figure  09.

 

•For standard rotation assembly (clockwise to close) rotate the body (50)  

about 40-45° counter-clockwise from bottom view or clockwise from  top 

view depending on which way the shaft has been linked as shown  in 

figure 10.

 

•Press the two pistons (40) simultaneously inside the body (50) until the pis-  

tons are engaged and rotate the body clockwise from bottom view or  

counter clockwise from top view until the stroke is  completed.

 

•Ensure that when the pistons are inserted that they both mesh at the  

same time. Check  fully closed and open positions as shown in figure  11.

 

Via Alla Campagna n.1 * I - 24060 Costa di Mezzate  (BG)

 

Phone: 0039-035-682299 * Fax:  0039-035-687791

 

e-mail: [email protected] *  http://www.airtorque.it

 

Modifications reserved. Date 02.2000.  

No guarantee for accuracy.

 

Older data sheets are invalid.

 

Maintenance

 

908e

 

Summary of Contents for AT1001U

Page 1: ... information contact Air Torque Isolate all air lines and make sure that actuator air connection is vented before installation or ser vicing of the actuator Do not remove end caps or disassemble the actuator while the actuator is pressurised Before installing onto a valve make sure that the rotation of the valve and the actuator are the same and that the position indicator orientation is also corr...

Page 2: ...design suitable for both indoor or outdoor installations Protection and Corrosion resistance Ensure actuators are supplied with corrosion protections for normal environments For severe duties select the protection required for corrosion protection See technical data sheet before installing actuators Actuator designation and Marking The actuator type size operating pressure output torque direction ...

Page 3: ...ON INSTRUCTIONS The AT actuator is a pneumatic device for the remote operation of industrial valves The AT actuator will operate through 90 the option is available for 120 or 180 of rotation permitting the opening and closing of many types of 1 4 turn valves All the necessary technical information to install the actuator correctly and safely onto a valve i e Dimensions Output torque Air volume Str...

Page 4: ...ator in the closed position Fit the solenoid valve 4 onto the actuator 3 using the screws provided max tightening torque see the table below Switchbox mounting Fit the switchbox and bracket 1 onto the actuator 3 using four screws provided max tightening torque see the table below Tightening torque table M Nm M5 5 6 M6 10 11 M8 23 25 M10 48 52 M12 82 86 M14 132 138 M16 200 210 M20 390 410 M24 675 7...

Page 5: ...t Fit the square of the valve 5 directly into the square of the actuator 3 and bolt together through the valve ISO pad max tightening torque see table above Bracket mount Mounting with a bracket 6 and coupling 7 the bracket is bolted to the actua tor valve to join them together and the coupling is used to connect the actuator output drive to the valve stem max tightening torque see table 1 Mountin...

Page 6: ... UNI 5075 A B C D E P 39 1 Cap Screw Indicator A2 70 ISO3506 40 2 Pistons GD AlSi8 5Cu3 5Fe UNI 5075 anodized 41 1 Identification Label Polyester Aluminium 42 2 Label EndCap Polyester Aluminium 43 1 Spigot Alloy6082 ASTM B221 Alodur 50 1 Body Alloy6083 ASTM B221 A B C D E P 60 1 Drive Shaft A105 ASTMA105 ENP 6 MAINTENANCE INSTRUCTION With the information given below AIR TORQUE provides the end use...

Page 7: ...sassembly of the end caps may result in injury Return actuator to AIR TORQUE for further maintenance For spring return actuators always remove spring cartridge Remove end cap O rings 14 and discard if replacing all soft components D Pistons disassembly Part No 40 figure 04 Holding the body 50 in a vice or similar device rotate the drive shaft 60 until the pistons 40 are released Caution Air pressu...

Page 8: ... figures 08 09 10 and 11 Install piston O rings 16 the Piston skirt 05 and piston head 15 bear ings Grease the internal surface of the body 50 and the piston 40 rack teeth Hold the body 50 in a horizontal position by inserting the top of the shaft into a vice or the bottom of the shaft connection into a male drive fitted in a vice as shown in figure 08 Ensure that the octi cam is in the right posi...

Page 9: ...d in figure 14 D Assembly of stop cap screws Parts 02 and stroke adjustment figure15 Insert on both the stop cap screw 02 the nut 04 the washer 03 and the O ring in 11 Fit the stop cap screw 02 in the body Stroke adjustment for standard rotation actuator Clockwise to close 0 Close position stoke adjustment with actuator in close position screw or unscrew the right from top view stop cap screw 02 u...

Page 10: ...has to turn during the opening of the valve anticlockwise fail safe to open by spring return the pistons and the cam turning of the drive shaft must be assembled as shown in figure bottom Way of turning The drive shaft of the actuator turns anticlockwise from end position of the actuator open pres sure fail on port 2 into the basic position close an opening of the valve is obtained The delivery wi...

Page 11: ...ition Remove the indicator and the spring clip Then push down the drive shaft a little while fixing the cam in it s position cam drive shaft until the Turn the drive shaft for one tooth connection square is parallel Now fit the drive shaft again After that turn the drive shaft in the open position see above and assemble the actuator Note only unscrew left adjustment screw Note adjust left screw at...

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