Dave

We mounted a permanent vacuum gauge at the manifold with a gated valve in
line to adjust vacuum at the machine. We then checked vacuum at the spindle
with a Magnehelic gauge and adjusted the gated valve to get proper vacuum at
the spindle. The permanent gauge was marked with a range (Go Nogo) as a tool
for the operators to easily monitor vacuum. During pm's the vacuum is
measured at the spindle to verify settings and to make sure no vacuum leaks
have occurred at the machine. The permanent gauge also serves as a tool to
monitor the overall performance of the central vacuum system.


                                        Frank

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Dave Simonik
Sent: Wednesday, December 08, 2004 1:15 PM
To: [log in to unmask]
Subject: [TN] Vacuum Monitoring.


Tech's;

  A question for the pcb fabricators. Do you measure / monitor drill machine
vacuum levels at the machine manifold, or directly at the pressure foot /
spindle? If vacuum is monitored at the pressure foot / spindle, how do you
accomplish this?

 David R. Simonik

------------------------------------------
Laser Engineering Technician
Sanmina - SCI Corporation
Owego NY Division
1200 Taylor Rd. Owego NY 13827

Office: 607-689-5609
Fax:     607-689-5909

<mailto:[log in to unmask] <mailto:[log in to unmask]> >




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