Search found 48 matches

by Jim Stead
Sun Mar 31, 2019 2:03 am
Forum: Vacuum Technology (& FAQs)
Topic: Micro-Ion ATM gauges on eBay
Replies: 10
Views: 5845

Re: Micro-Ion ATM gauges on eBay

I received my gauge on Monday. Unfortunately it fried itself after about 5 minutes of operation It powered up normally with the 25.16vdc I supplied it with from a pair of serially connected 12v batteries. I connected no other pins but power and 3 to 5. The screen showed 7.6e2 Torr in (A)bsolute meas...
by Jim Stead
Tue Mar 19, 2019 11:44 pm
Forum: Vacuum Technology (& FAQs)
Topic: Micro-Ion ATM gauges on eBay
Replies: 10
Views: 5845

Re: Micro-Ion ATM gauges on eBay

Sorry to hear that. I bought one of these gauges too, and expect to get it on the 25th. I'll let you know what I end up with.
by Jim Stead
Mon Mar 11, 2019 5:15 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards EXDC80 wiring question
Replies: 5
Views: 2770

Re: Edwards EXDC80 wiring question

You'll also want to take a look at this: https://www.youtube.com/watch?v=_HzEHWKnOfw

At about 50 seconds into the video, you can see the power supply this guy setup. Looks like Red and Pink are your 7/8 80v pair, brown and green are your 5/6 0v pair, and yellow is the wire 1 switch connection.
by Jim Stead
Mon Mar 11, 2019 2:55 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards EXDC80 wiring question
Replies: 5
Views: 2770

Re: Edwards EXDC80 wiring question

I provided the link to the manual not knowing if you had it already. While it does not detail the color of the wires used for each connection, it does explain the connections and their purpose to the controller. I thought that would be helpful to you in figuring out what the wires did. We know one o...
by Jim Stead
Sun Mar 10, 2019 6:33 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards EXDC80 wiring question
Replies: 5
Views: 2770

Re: Edwards EXDC80 wiring question

The user manual explains the electrical connections. https://www.idealvac.com/files/manuals/ ... s-Data.pdf
by Jim Stead
Wed Dec 19, 2018 6:47 pm
Forum: Vacuum Technology (& FAQs)
Topic: Cleaning/Repairing Edwards E2M5
Replies: 24
Views: 8597

Re: Cleaning/Repairing Edwards E2M5

Here's a start... Instruction manual: https://www.yumpu.com/en/document/read/21842461/edwards-e2m2-e1m5-e2m5-e1m8-e2m8-e2m12-instruction-manual Exploded view with part numbers: https://www.precisionplus.com/uploadedFiles/Content/Pages/Technical_Resources/E2M2_E1-E2M5-8.pdf Pump overhaul / cleanup : ...
by Jim Stead
Mon Jul 10, 2017 5:54 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: High Voltage System Approval
Replies: 5
Views: 2109

Re: High Voltage System Approval

Steven, A water pipe is not a good ground for a high voltage power supply. You can find a better ground in a nearby electrical outlet or wire. Tape is not sufficient for the connection either. Your ground cable needs to be mechanically attached to the ground, by screw pressure or something similar.
by Jim Stead
Thu Jun 29, 2017 1:22 am
Forum: Vacuum Technology (& FAQs)
Topic: Some Diffusion pump Questions
Replies: 21
Views: 5891

Re: Some Diffusion pump Questions

The "oddity" in your column looks like a cold trap to me. Based on the connectors, I would think the left side supports an LN2 feed, and the right side hose is the vent.
by Jim Stead
Tue May 30, 2017 11:57 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: X-ray transformer modifications
Replies: 22
Views: 9757

Re: X-ray transformer modifications

I haven't had any problems with trapped air yet , but I'm also not operating it under a load or at the higher voltages it's capable of producing. There wasn't any benefit to leaving it out of oil for as long as I did. I could have easily lowered back into the oil when I wasn't working on it. That's ...