PVA SB300 User manual

Precision Valve & Automation
One Mustang Drive
Cohoes, NY 12047
www.pva.net
SB300 Valve
OWNER’S MANUAL
Rev A
WHERE
PRECISION
DRIVES
PRODUCTION

SB300
PVA
This document is based on information available at the time of its publication. While
efforts have been made to ensure the contents of this manual are accurate, the
information contained herein does not purport to cover all specific details or variations
in hardware, or to provide for every possible contingency in connection with
installation, operation, or maintenance. Features may be described herein which are
not present in all hardware and software systems. Precision Valve and Automation, Inc.
assumes no obligation of notice to holders of this document with respect to changes
subsequently made.
Precision Valve and Automation, Inc. makes no representation or warranty, expressed,
implied, or statutory with respect to, and assumes no responsibility for the accuracy,
completeness, sufficiency, or usefulness of the information contained herein. No
warranties of merchantability or fitness for purpose shall apply.
This document, including the information contained herein, is the property of
Precision Valve and Automation, Inc. and is considered confidential and
proprietary information. It is delivered on the express condition that it not be
used, disclosed, or reproduced, in whole or in part, for any reason without prior
written consent of Precision Valve and Automation, Inc.
Copyright © 2011
Precision Valve and Automation, Inc.
All Rights Reserved.
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Table of Contents1.
Table of Contents ..................................................................................... 31.
Introduction ............................................................................................. 52.
Document History ............................................................................................... 52.2
Safety .................................................................................................................. 62.3
Theory of Operation............................................................................................72.4
Personal Protective Equipment ..........................................................................72.5
Waste Disposal.................................................................................................... 72.6
Necessary Tools ..................................................................................................72.7
Setup........................................................................................................ 83.
Overview .............................................................................................................83.1
Operation................................................................................................. 94.
Bleed the Valve ...................................................................................................94.1
Shutdown..........................................................................................................104.3
Maintenance .......................................................................................... 115.
Valve Lubricant ................................................................................................. 115.1
Disassembly.......................................................................................................115.2
Clean the Valve Components............................................................................225.3
End Cap ..................................................................................................... 225.3.1
Fluid Body..................................................................................................235.3.2
Separation Body........................................................................................ 235.3.3
Air Cylinder................................................................................................235.3.4
Air Cap....................................................................................................... 245.3.5
Assemble the Valve........................................................................................... 245.4
To Replace O-rings ............................................................................................395.5
To Replace Lip Seals ..........................................................................................405.6
Exploded View........................................................................................ 416.
Exploded View of the NPT Version ...................................................................416.1
Item Numbers and Descriptions for 112-07519, NPT version .......................... 426.2
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Exploded View of the Luer Version...................................................................436.3
Item Numbers and Descriptions for 112-07384, Luer version .........................446.4
Technical Specifications.......................................................................... 457.
Troubleshooting ..................................................................................... 468.
Notes ..................................................................................................... 479.
Warranty................................................................................................ 4810.
Table of Figures ...................................................................................... 4911.
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Introduction2.
Before you operate this system, read the operation and setup manual. This will help you
to become familiar with the product and ensure successful operation.
If any questions or problems arise, contact PVA’s Customer Service Department for
support.
PVA Contact Information2.1
Main Office PVA
One Mustang Drive
Cohoes, NY 12047
Tel [phone]
Fax [phone]
Website http://www.pva.net
Email mailto: [e-mail]
Technical Support
Tel [phone]
Email mailto: [email protected]
Document History2.2
Revision
Revision Date
Reason for Changes
REV A
April 2014
Initial Release
NOTE: All photographs and CAD model representations in this document are a
“general representation” of the valve and its components. The actual
appearance of the valve and its components can differ based upon customer
specific configuration.
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Safety2.3
Certain warning symbols are affixed to the machine and correspond to notations in this
manual. Before operating the system, identify these warning labels and read the
notices described below. Not all labels may be used on any specific system.
Always wear approved safety glasses when you operate or
work near the workcell.
Before you operate the system, read and understand the
manuals provided with the unit.
Never put hands or tools in areas with this symbol when the
machine is in operation. A dangerous condition may exist.
Read and understand the manuals provided with the unit
before any repairs or maintenance is done. Only a qualified
individual should do service.
Use caution when there are pressurized vessels. Find and
repair any leaks immediately. Always wear appropriate safety
equipment when you work with pressurized vessels or vessels
that contain chemicals.
Shear hazard from moving parts. Avoid contact.
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Theory of Operation2.4
The SB300 is a high pressure valve with a low maintenance design. It dispenses a high
flow of medium to high viscosity material with adjustable snuff back. There are two
main versions of this valve, one with the 1/4” NPT end fitting and one with a luer outlet.
Personal Protective Equipment2.5
Operators must use eye protection because material contents are under pressure.
Always wear gloves when handling materials and solvents. Refer to MSDS sheets on the
material being dispensed for other precautions.
Waste Disposal2.6
Dispose of all used parts and materials in accordance with local laws and regulations.
Necessary Tools2.7
PVA offers tools and cleaning accessories to maintain the SB300 valve.
Part Number
Description
02506
Hook and Pick Set
9463-K33
Lubricant for O-ring seals
B62-2048
2.5cc Silicone Grease
B62-0752
Mineral Oil Lubricant
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Setup3.
Before you operate the valve, know the valve components. Do the steps instructed
below for safe and correct operation.
1. Make sure your valve is correctly connect to the dispense system. Refer to your
fluid schematic.
2. Make sure you know the valve specifications and do not operate the valve
outside of the specifications.
Overview3.1
Figure 1: Valve Components
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Operation4.
NOTE: Refer to Section 6 for part reference numbers. All part numbers refer to
the NPT version of the valve (drawing 112-07519) unless otherwise specified.
NOTE: Use only compatible solvents and materials or the seals and O-rings will
be damaged.
Operation Notes:
The sections that follow are in the recommended order to operate the valve. To operate
the valve, do every sub-section in Section 4, in the order shown.
1. Set the operating air pressure to 60-100 psi.
2. Cycle the valve. Make sure the piston can be heard going up and down.
3. Make sure the fluid delivery system is correctly connected and pressurized as
necessary.
Bleed the Valve4.1
1. Use the purge button on the teach pendant to purge the valve. Push the purge
button through step 4.
2. As material dispenses, turn the stroke adjust clockwise until it is fully engaged.
3. Then, turn the stroke-adjust counterclockwise to loosen it until the material
dispenses without any breaks in the flow of material.
4. Release the purge button.
NOTE: If the material has drips or strings after dispensing there is still air in
the valve and it must be bled again.
5. After the valve has been correctly bled, continue with normal operation.
NOTE: If the stroke adjust is down too far, the valve will not close and the valve
will continue to dispense or leak.
Adjust Snuff Back4.2
Snuff back stops material from dispensing after the valve closes. The stroke adjust (9) is
used to change snuff back. The snuff back setting will be different for each dispense
procedure, the steps below are for a general setting. It may be necessary to continue to
adjust snuff back to get the correct results for your procedure.
1. To set or reset your snuff back, turn the stroke adjust (9) clockwise until it is
fully engaged.
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2. Turn the stroke adjust (9) counterclockwise for two full turns.
Figure 2: Turn the Stroke Adjust Two Full Turns
3. Operate the valve at this stroke adjust (9) setting. Adjust as necessary for your
application.
NOTE: Turn the stroke adjust counterclockwise to increase snuff back and turn
the stroke adjust clockwise to decrease snuff back.
4. If you cannot get the necessary results, turn the stroke adjust counterclockwise
until it is fully loosened. Some applications work best this way. Decrease the
snuff back as necessary.
Figure 3: Stroke Adjust Fully Loosened
Shutdown4.3
1. Release the pressure in the system, refer to the workcell manual.
2. Open the valve and let any material dispense until the system pressure is close
to zero.
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3. Close the valve.
4. Clean off any material on the valve.
5. Install a night cap, if necessary.
Maintenance5.
Interval
Action
Daily
•Examine the material outlets for contamination and cured
material.
As
Necessary
•Replace O-rings and lip seals if they are worn or damaged.
It will be necessary to clean and rebuild the valve after some time. Before you start the
procedure make sure you have the necessary spare parts, refer to Section6.2 and 6.4.
•All O-rings and seals must be lubricated.
•Removable thead locker must be applied to the set screw that goes on the piston.
Valve Lubricant5.1
There are three different kinds of lubricants used on this valve.
•Lubricant: This is used on many of the O-rings and lip seals for lubrication and to
improve the seal.
•Grease: This is applied to many of the air section components.
•Oil: This is used on the threads of the stroke adjust to make sure it turns smoothly.
Disassembly5.2
1. Decrease air and fluid pressure to the valve.
2. Remove the valve from the workcell.
3. Remove all pneumatic and fluid hoses. Use a wrench to remove the air fittings.
4. Use a hex wrench to remove the four air cap screws (17).
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Figure 4: Loosen and Remove the Four Air Cap Screws
5. Pull on the air and fluid sections to separate the sections.
Figure 5: Air and Fluid Sections Separated
6. Use a hex wrench to remove the four separation body screws (14).
Figure 6: Remove the Four Screws
7. Remove the separation body (6) from the fluid body (7).
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Figure 7: Separation Body and Fluid body
8. Use the pick to remove the lip seal (11).
Figure 8: Remove the Lip Seal
9. Use the pick to remove the O-ring (22).
Figure 9: Remove the O-ring
10. Use a hex wrench to remove the end cap screws (16). For valves with a luer
outlet, continue to step 13.
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Figure 10: Remove End Cap Screws
11. Separate the end cap (10) from the seal plate (1).
Figure 11: Separate Sections
12. Use a pick to remove the O-ring (21).
Figure 12: Remove the End Cap O-ring
Continue to step 19 for valves with the 1/4” NPT end fitting.
For For valves with a luer outlet:
NOTE: part numbers for steps 13-18 refer to drawing number 112-07384.
13. Use a hex wrench to remove the end cap screws (16).
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Figure 13: Remove the Screws from the End Cap
14. Separate the end cap (3) from the seal plate (1).
Figure 14: Separate the End Cap from the Seal Plate
15. Use a wrench to loosen and remove the luer adaptor (20).
Figure 15: Remove the Luer Adaptor
16. Use a pick to remove the washer (19) from the end cap (3).
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Figure 16: Remove the Washer from the End Cap
17. Use a pick to remove the O-ring (23) from the end cap (3).
Figure 17: Remove the O-ring from the End Cap
Do the steps below for both valve types.
18. Separate the seal plate (1) from the fluid body (7).
Figure 18: Separate the Seal Plate from the Fluid Body
19. Use a pick to remove the seal plate O-ring (22).
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Figure 19: Remove the O-ring
20. Use a pick to remove the lip seal (12) from the seal plate (1).
Figure 20: Remove the Lip Seal
21. Use a pick to remove both of the washers (2) from the fluid body (7).
Figure 21: Washers in the Fluid Body
22. Separate the air cap (5) from the air cylinder (3).
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Figure 22: Separate the Air Sections
23. Push on the rod (8) to remove the piston-rod assembly from the air cylinder (3).
Pull the piston-rod assembly out of the air cylinder.
Figure 23: Remove the Piston Rod Assembly
24. Pull the spring (18) out of the air cylinder (3). Use a pick if necessary.
Figure 24: Remove the Spring
25. Use a pick to remove the air cylinder O-ring (19).
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Figure 25: Remove the Air Cylinder O-ring
26. Use a pick to remove the piston O-ring (24).
Figure 26: Remove the Piston O-ring
27. Use a hex wrench to remove the set screw (15) in the piston (4). Hold the flat
section on rod (8) with a wrench and turn the set screw until it is loose.
Figure 27: Disassemble the Piston-Rod Assembly
28. Disassemble the piston-rod assembly.
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Figure 28: Disassembled Piston-Rod Assembly
29. Use a pick to remove the air cap O-ring (23).
This is the end of the normal disassembly procedure. If it is necessary to disassemble the
air cap (5) and stroke adjust (9), do the steps below.
30. Turn the stroke adjust (9) so that the threads can be seen at the bottom of the
air cap (5).
31. Use snap ring pliers to remove the snap ring (13) from the stroke adjust (9).
Figure 29: Snap Ring Removed
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