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oil less vacuum pump
has anyone used a oil free vacuum pump for service work ?
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Yes but it was attached to the diesel engine in the van I was driving. 
It failed frequently.
In all seriousness I don't think there are any oil less vacuum pumps designed for ac service. That is more of a process or lab specialty type thing.
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"Is this before or after you fired the parts cannon at it?" - senior tech
I'm tired of these mediocre "semi flammable" refrigerants. If we're going to do it let's do it right.
Unless we change direction we are likely to end up where we are going.
"It's not new, it's better than new!" Maru.
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Thanks , I was given this oil less vacuum pump from a friend of mine . He in turn got it from a friend of his who was cleaning out a house which also had different refrigerants and a recovery unit . So this guy has been using this pump for his service for years . So it got me thinking , either he been doing it wrong for years or he knows something we don't.
Thanks again , Mario
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That is super interesting. Have you put a micron gauge on it to test it?
I would be surprised if it could get to 15 microns like an oiled pump but if it could get below 500 microns it may be helpful for initial drying of very wet systems.
Originally Posted by
mario tonzelli
Thanks , I was given this oil less vacuum pump from a friend of mine . He in turn got it from a friend of his who was cleaning out a house which also had different refrigerants and a recovery unit . So this guy has been using this pump for his service for years . So it got me thinking , either he been doing it wrong for years or he knows something we don't.
Thanks again , Mario
Sent from mars using Tapatalk
"Is this before or after you fired the parts cannon at it?" - senior tech
I'm tired of these mediocre "semi flammable" refrigerants. If we're going to do it let's do it right.
Unless we change direction we are likely to end up where we are going.
"It's not new, it's better than new!" Maru.
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Doubt its rated for a deep vacuum
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We have oil-less pumps for chillers and stuff. Ive used them on very wet systems.
They need to be sent back after so many hours for maintenance. You will know when you put a micron gauge on her and she dont pull down low anymore.
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Since this pump was given to me on Fri ,I haven't done anything but try it . It pulls a vacuum 30 in gauge . I'm going to put a micron gauge on it . I let you know .
Mario
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OK I ran this pump for 15 minutes with a micron gauge on it . The best it could do was 60,000 microns . This is an old pump . so I guess part of the reading would be due to age . Either way this guy was using this type of vacuum pump for service work for a long time . Makes you wonder
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They work great if they are serviced and maintained
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Originally Posted by
mario tonzelli
OK I ran this pump for 15 minutes with a micron gauge on it . The best it could do was 60,000 microns . This is an old pump . so I guess part of the reading would be due to age . Either way this guy was using this type of vacuum pump for service work for a long time . Makes you wonder
If you get it serviced please report back the results you get from another test.
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