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Pinch Valve Assembly

17

Part 768670A

.

2005 Nordson Corporation

Pinch Valves

See Fig 8

1

2

3

4

Figure 8

Pinch Valves

Item

Part

Description

Quantity

Note

1

768544

Valve, pinch, flanged, 80mm

1

2

393398

:

Sleeve, inner pinch valve, 80mm

1

A

3

768543

Valve, pinch, flanged, 50mm

1

4

766251

:

Sleeve, flanged, inner pinch valve, 50mm

1

A

NOTE A: Fitted inside the pinch valve so not specifically shown in Fig 3

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Содержание 768670A

Страница 1: ...Issued 05 05 NORDSON ITALY MILAN ITALY This document is available on the Internet at http emanuals nordson com finishing For parts and technical support call your nearest Finishing Customer Support Ce...

Страница 2: ...n Italia S p A Via Dei Gigli 3 B 20090 Pieve Emanuele Milano Italy Notice This is a Nordson Corporation publication which is protected by copyright Original copyright date 2005 No part of this documen...

Страница 3: ...Transport 7 Unpacking 7 Removing 7 Storage 7 Disposal 7 Electrical 7 Pneumatic 7 Setting Up 8 Operation 8 Raising And Lowering The Surge Hopper For Cleaning 9 Maintenance 10 Replacing A Pinch Valve Sl...

Страница 4: ...Table of Contents ii Part 768670A 2005 Nordson Corporation...

Страница 5: ...for making sure that Nordson equipment is installed operated and serviced by qualified personnel Qualified personnel are those employees or contractors who are trained to safely perform their assigne...

Страница 6: ...Keep clear of moving equipment Before adjusting or servicing any moving equipment shut off the power supply and wait until the equipment comes to a complete stop Lock out power and secure the equipmen...

Страница 7: ...re extinguishers are located If a fire starts in a spray booth immediately shut off the spray system and exhaust fans Clean maintain test and repair equipment according to the instructions in your equ...

Страница 8: ...must wear shoes with conductive soles or use a ground strap to maintain a connection to ground when working with or around electrostatic equipment Operators must maintain skin to handle contact betwee...

Страница 9: ...d between the top edge of the surge hopper and the bottom edge of the cyclone when the surge hopper is being raised Possible entrapment of operators fingers inside the pinch valve sleeves during opera...

Страница 10: ...ich is then pumped by the Pinch Valve Assembly back to a sieve or other conditioning or storage equipment The assembly consists of two sleeved pinch valves 2 and 3 vertically mounted above each other...

Страница 11: ...to humidity dust and vibrations Unpacking Carefully unpack the unit avoiding damage Check for damage caused during transport Save packing materials for possible later use otherwise recycle or dispose...

Страница 12: ...rea to the front of the assembly where the surge hopper hinges out is clear from obstruction When positioning the unit ensure that the bottom plate of the cyclone is no more than 40mm above the top of...

Страница 13: ...orage equipment The sequence of operation is controlled by the pinch valve controller situated in the booth control cabinet or the feed centre dependent upon type of booth These sequence settings are...

Страница 14: ...l power and pneumatic connections are disconnected before carrying out maintenance work Replacing A Pinch Valve Sleeve To replace a pinch valve sleeve use the following procedure 1 Switch off the Pinc...

Страница 15: ...n 1 2 3 4 4 Figure 4 Disconnecting the pinch valves 3 See Fig 4 Remove the pressure regulators and gauges 4 on the side of the pinch valve to avoid damage 4 See Fig 5 Remove the roll pin 1 that retain...

Страница 16: ...bly 12 Part 768670A 2005 Nordson Corporation 1 Figure 5 Removing the roll pin 5 See Fig 6 and Fig 7 Rotate the sleeve 45 degrees anti clockwise when the four tabs are lined up with the slots the sleev...

Страница 17: ...Pinch Valve Assembly 13 Part 768670A 2005 Nordson Corporation Figure 6 Lining up the four tabs...

Страница 18: ...ide without a roll pin is facing the new sleeve Ensure that the large tab on the sleeve is lined up with the large slot of the pinch valve body 8 Rotate the sleeve 45 degrees to lock it in position 9...

Страница 19: ...e procedures cover only the most common problems that you may encounter If you cannot solve the problem with the information given here contact your local Nordson representative for help Problem Possi...

Страница 20: ...e ordered separately The Description column gives the part name as well as its dimensions and other characteristics when appropriate Indentions show the relationships between assemblies subassemblies...

Страница 21: ...igure 8 Pinch Valves Item Part Description Quantity Note 1 768544 Valve pinch flanged 80mm 1 2 393398 Sleeve inner pinch valve 80mm 1 A 3 768543 Valve pinch flanged 50mm 1 4 766251 Sleeve flanged inne...

Страница 22: ...Assembly 18 Part 768670A 2005 Nordson Corporation Pneumatic Switch See Fig 9 1 Figure 9 Pneumatic Switch Item Part Description Quantity Note 1 768170 Switch lever auto seal 1 Lifting Mechanism Cylinde...

Страница 23: ...art 768670A 2005 Nordson Corporation 1 Figure 10 Lifting mechanism cylinder Item Part Description Quantity Note 1 766347 Cylinder pneumatic 50 stroke 1 2 Regulator 1 8 2 A NOTE A Non Saleable item Vib...

Страница 24: ...ration 1 Figure 11 Vibrator Item Part Description Quantity Note 1 769057 Vibrator 240v AC 1 A NOTE A This item is optional Specifications Weight 60 Kg Noise Lower than 70 dBa in normal operation Opera...

Страница 25: ...level during operation Maximum 50 at 40 degrees C Maximum 90 at 20 degrees C Dimensions Table 1 indicates the overall dimensions of the Pinch Valve Assembly Table 1 General Dimensions General Dimensio...

Страница 26: ...art 768670A 2005 Nordson Corporation Figure 13 Side View Pneumatic Requirements Main supply air pressure 6 Bar Flow rate 600 nL min Operating pressures of components Pinch valves 2 5 Bar Surge hopper...

Страница 27: ...Safety of machinery Basic concepts general principles for design Part 1a Basic terminology methodology UNI EN 292 1 1992 Part 2a Technical principles and sepcification UNI EN 292 2 992 A1 1995 EN 294...

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