Search found 24 matches

by fizz
Sat Dec 17, 2016 4:02 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Pirani Gauge/Display Troubles
Replies: 15
Views: 5974

Re: Edwards Pirani Gauge/Display Troubles

Hi Tom

I have said the model # of the valve is SV10 this is incorrect and should be SP10 , Email me about this item.

Robin
by fizz
Fri Dec 16, 2016 4:39 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Pirani Gauge/Display Troubles
Replies: 15
Views: 5974

Re: Edwards Pirani Gauge/Display Troubles

I have said SV10, but it should be SP10 give me a call.
by fizz
Thu Dec 15, 2016 6:35 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Pirani Gauge/Display Troubles
Replies: 15
Views: 5974

Re: Edwards Pirani Gauge/Display Troubles

Hi Tom Have you used the Gas ballast on the RV3 ? If not and the oil is still a clear through the sight glass open the GB switch on ll (full ) for a couple of hours , just in case there are contaminants there ,do this with the pump inlet sealed off, once the pump has done its time close the GB switc...
by fizz
Wed Dec 14, 2016 2:01 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Pirani Gauge/Display Troubles
Replies: 15
Views: 5974

Re: Edwards Pirani Gauge/Display Troubles

Thanks for thinking of me Tom ! What you have described is normal except for the head reading off scale @ 10-3, your pump is rated @ 3.7m3h-1 so its pumping a tiny Pirani tube with a volume of 8 cm3 its just like one big gulp of gas to get to 10-2 then quickly gets to the pumps ultimate of around 5x...
by fizz
Mon Dec 12, 2016 3:47 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Pirani Gauge/Display Troubles
Replies: 15
Views: 5974

Re: Edwards Pirani Gauge/Display Troubles

Hi Tom

Try putting the Head directly on the pump inlet then watch the needle go across the meter, so long as you pump is ok !

Robin
by fizz
Wed Sep 03, 2014 3:49 pm
Forum: Vacuum Technology (& FAQs)
Topic: Sourcing Vacuum Hose
Replies: 9
Views: 2962

Re: Sourcing Vacuum Hose

Hello Tom


If you can give me your required specification for your flexible hose NW10 or NW16 , I’m sure that I can help you.
Your answer to recalvac@aol.com UK address.
by fizz
Fri Aug 22, 2014 6:09 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards WRG - Fluctuations?
Replies: 4
Views: 1689

Re: Edwards WRG - Fluctuations?

Dave You have not said how old this WRG is, serial # will tell you the first two digits is the year of production, or what sort of usage it has had, it could just be that the Pirani side just can’t reach the Penning changeover pressure of 5-9 E3 although the system could well be below the required p...
by fizz
Wed Nov 06, 2013 6:05 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards E203D diffusion pump
Replies: 3
Views: 1332

Re: Edwards E203D diffusion pump

The E203D working instruction book says use the correct coseal

that is ISO 63 Part # B271-58-063 available from us @ £18.00
by fizz
Wed Jul 03, 2013 5:53 pm
Forum: Vacuum Technology (& FAQs)
Topic: Flange type on Diffusion Pump
Replies: 4
Views: 1368

Re: Flange type on Diffusion Pump

Hi Chris The Pump is an Edwards EO4, just too check this the pump throat should be 5", I have found a page from the manual for this model that may help you with diamentions etc. Edwards used to sell a baffle isolation valve to go on top of the Pump flange, see if you can find an H7L4 Baffle from som...
by fizz
Wed Jul 18, 2012 3:51 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards 2SC20A doc wanted
Replies: 9
Views: 3076

Re: Edwards 2SC20A doc wanted

<r>We have the original care & maintenance manual for Rotary Pumps here, its about 30mm thick with all parts listing and exploded views.<br/> <br/> Part one is only for combined rotary compressors, these only give around the 10mbar range and a small pressure of around 10 psi when in good order.<...