In this issue:  
Important Safety Reminder
Drystar GV400 AND EH2600/EH4200 Packages
Horizontal Dry Vacuum Pumps Save Space on the Plant Floor
Crystalline Silicon Solar Cell Manufacturing Requires Vacuum-based Solutions
Website Survey Part 5 of 5
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  from Edwards
March 2008
   

 

 

Equipment News


Important Safety Reminder on the E2M0.7, 1 and 1.5 Capacitor Upgrade Program.

Safety for our customers is very important to us at Edwards. We continue our commitment to a safe workplace with this friendly reminder.

Back in 2005 we were alerted to a potential problem with our E2M0.7, E2M1 and 1.5 plastic cased capacitors. In a few instances these capacitors had failed in use and in some of these instances this resulted in fire damage to the pump, motor and possibly surrounding equipment. We contacted our customer base either directly or through the OEMs that use these pumps to make you aware of this safety concern and the availability of these upgrade kits. Upgrading to the metal cased capacitors is a simple task for a qualified electrician or technician to carry out.

We thank all our customers who have contacted us via our website www.edwardsvacuum.com/upgrade or by telephone to request upgrade kits. To date, we have shipped over 10,300 kits into the field.

Because we want to ensure your pumps are operating safely, we again urge you to check to see if you have any E2M0.7, E2M1 or E2M1.5 pumps on-site with old plastic-cased capacitors that should be upgraded. We also ask that you pass this request onto any colleague who may have these pumps. The document on our website www.edwardsvacuum.com/upgrade explains what to look for and how to request the appropriate upgrade kit. Although your pump may be operating well today, we encourage you to take advantage of this upgrade to ensure it continues to operate safely in the future. 

 
New Literature

Drystar® GV400 and EH2600/EH4200 Packages
Edwards has pioneered the use of dry vacuum pumps in some of the most critical and demanding applications. By combining the well proven Edwards claw mechanism pumps with a hydrokinetic drive booster, the Edwards Drystar GV400/EH2600 and GV400/EH4200 series provides benefits in economy, performance and compactness, with a clean and robust pumping alternative to oil sealed vacuum pumping systems.

The Drystar systems non-contacting mechanism reduces wear and maintenance for higher up-time as well as provides faster pump-down performance. The Drystar packages are effective and cost-efficient, and offer the ability to handle dust and water vapor without the risk of process contamination, loss of performance or maintenance issues associated with oil sealed vacuum pumping systems.

Download Datasheet | view all literature | forward this link
 
Technology News
Horizontal Dry Vacuum Pumps Save Space on the Plant Floor
As printed in the February issue of Pumps and Systems magazine, by John Skeates, Edwards

Because plant floor space is valuable, there is increasing pressure to make the most efficient use of the area available. Pumps used in chemical applications can often be bulky, but new compact dry pump technology in Europe typically halves the footprint over other designs.

read article | Download CPH Datasheet | forward this link
 
Crystalline Silicon Solar Cell Manufacturing Requires Vacuum-based Solutions
as printed in the February issue of SST magazine, by Peter Holland and Katherine Hutchison, Edwards


Crystalline silicon solar cell manufacturing requires vacuum-based processing tools for many critical steps, from mono- to poly-crystalline silicon growth, to thin-film depositions on silicon wafers.
read article | forward this link
 
Website Survey Part 5 of 5

We appreciate and value the feedback we have been receiving regarding our new website. To better serve you and make our site as efficient as possible we would like to ask a few questions about your experiences with our new site.

take survey | forward this link
 
  Vacuum Facts
 
Heroes of Vacuum pt 6

Martin Knudsen

Martin Knudsen made a tremendous contribution to vacuum science and especially in the the understanding of flow in different parts of the vacuum spectrum. He was born in the Fyn region of Denmark in 1871 and in 1896, after 6 years of study, gained a Masters degree in science majoring in (the relatively new established discipline of) physics. This was at the the University of Copenhagen during which time he worked as an assistant to Christiansen who soon later was to guide Neils Bohr.

read the full article
  Brain Teaser Solution

Question from January:

You are working on a Plasma Enhanced Chemical Vapor Deposition (PECVD) solar manufacturing R&D application. Your facility has a high vacuum chamber which requires a turbomolecular pump and you have been asked to research what is the best turbomolecular pump to purchase. *Keep in mind you also require an ISO250 flange and 12 Standard Cubic Centimeters per Minute (sccm) at 1x10-4 mbar. Determine what turbomolecular pump is best suited for the application by answering the following:
What is the pumping speed required in liters/second (assume temperature of 20°C) at 1x10-4 mbar? What is the change in pump speed if you add an ISO250 gate valve that is 10 cm in length?

view the solution

  News and Events
 




 

Analytica 2008
April 1-4, 2008
New Munich Trade Fair Centre 
Munich, Germany

51st SVC Annual Technical Conference
April 19-24, 2008
2008 Hyatt Regency Chicago
Chicago, IL

For a complete list of events Edwards will be participating in click here

 
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Edwards, 301 Ballardvale Street, Wilmington, MA, US. 1-800-848-9800 or 1-978-658-5410
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