Question about Vacuums
Dear Sirs, I suspect the ion pump is not working properly. I may be wrong. The microscope was working fine before I vented the chamber. Prior to that, I have closed the isolation valve between the chamber and column. The chamber is working fine (10-6), but the column and gun vacuum weren't. When I open the isolation valves between column/chamber and column/gun, the pressure in the chamber was ok (not fluctuating). Does it means the ion pump is not working and did not pump the gun column to 10-7. I have waited for several hours with both isolation valves closed. Thank you. - Nikki-
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Posted on Jan 02, 2017
SOURCE: pressure relief valve opens
If the hose works ok then you have A blockage in the section of the machine that goes from the brush roller to the wastebin.
Just remove the soleplate under the machine & check all the airways working back to the wastebin. definately check removeable inspection ports you will probably find omething in them blocking the airway.
Posted on Jun 29, 2008
Dear terrygivens, 2-17-2009 4:12am EST (USA)
Most suction problems are caused by a clog from picking up something you probably didn't see or if you have pets an accumulation of pet hairs!
To clear it out take a metal coat hanger and unbend it til it's straight, then bend the end and tape it so when you push it through to unclog your vac it doesn't rip the hose.
Push the coat hanger in from the bottom brush area through the opening where the suction is. Also push it in and out anywhere else you can......You'll probably find something clogged....keep working it til it loosens and intermittently turn on the suction.
If you have a second vac with a hose, use that hose for suction on the clogged vac!
This should do it!
Posted on Feb 17, 2009
I had the same problem. After 3 weeks of seals belts pump etc. I was ready to give up.
The problem with mine as I suspect with others is the seal on the water tank.
The bottom plastic connector is not high enough to allow the water to flow to the pump.
My solution was to raise the bottom connector 3/16 of an inch.
I did this with a piece of plastic cut like a flat washer or auto gasket material could be used.
The connector must be removed from the bottom by pressing on the tabs. Hope this helps.
Posted on Apr 20, 2009
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