10 years old but I'll still comment. That isn't an electronic overpressure, that's an unloader valve. It takes the pressure out of the head and cylinder each time it stops so it's easier to restart. The little ring below it is for overpressure. It's called a pop off valve.
I got an Apollo dual motor dental compressor and.i want to use it in my shop. Appears to have a 40 gallon tank and it runs on single phase 240v current. Is there a way to increase the psi output to around 40-50 psi so that i could paint a car? I can send a photo of it it that helps? Thanks!
Been using a Sears 26 gal compressor for my dental office since the ancient Pelton & Crane motor died. BTW, the P&C had no filters or dryers on it. But even with high CFM, it takes a while to fill and recover and is noisy, and it's way overkill for my one op office. Thinking about getting a California Air 5 gallon model to replace it. Much quieter than this Apollo.
Maybe you can help. Very difficult to find info. I’m a dentist and have a two head matrix from the 80s that’s been running on one head for years. One of the heads is now tripping the main breaker unless I shut it off. Is it easy to change if I buy another? Or not worth the effort? I think it too has a Copeland head. Thanks. Ps mine makes a RACKET
Hey I have a question about my dental compressor. Is there a way I can send you pics of what I got going ? Mine was gave to me and it has 2 motors and one side keeps going on and off and the other side is just weak now
I'm in a need for a dental air compressor for a volunteer dental clinic in Mexico. I'm not familiar with brands or anything. Here is what we hope to use it for: dental cleanings (scale, polish, etc.). We typically see 30 patients per visit (held one a month)
thanks, I've always wondered why you can't put a 99dollar compressor in a dental practice,..,there must be some way get dry air without paying thousands of bucks...,BTW, what is that purge tank used for?
Hello, I am a surgical assistant for an oral surgeon and we have that exact air compressor in our office but it quit pressurizing the other day after a tech came in..any ideas on what he did that could have caused that and how to fix it? Any input would be helpful!
I picked up a air techniques L-66 from a friend of mine that own's a dental office. It has 2 separate compressor's mounted on top, both have their own switch. One will not run, but the cooling fan on top turns on when the switch is on. Any ideas on what could be wrong with it? Thanks.
More than likely a start capacitor on those old L-66's. But those compressors have been discontinued for years and Air Tech does not support them anymore. Doesn't mean you cant walk into an electrical supply store and buy the correct capacitor to start the motor (I've done that on more than a few occasions when in a pinch and the office needed to be up and running, but it won't last long). Most old dental air compressors used the old Copeland heads. Stout motor, but not oil-less and hard to find parts for anymore. Look in an RPI catalog. Good luck with it.
Hello Sir, Thank you for your great video I want to ask you is it ok to use regular (garage compressor) with dental unit ? I'm only using it to practice on fake teeth and I want to use a portable dental unit (turbine unit) .. thank you in advance
I have a customer who is looking to find what kind of oil to use in Copeland compressors (he has a used 3/4 HP) and I cannot find a manual or suggestion of the type of oil to use when doing an oil change. Can anyone here help with that?
Buy Tech West or any Dental Compressor oil. You can use Motorcraft air conditioner oil if in a bind. Mainly the oil has to be paraffin free oil. The oil used in Copland motors must be refrigeration oil. DON'T USE MOTOR OIL!!!
Dental air compressors average dryness is about 30 times wetter than what the medical and pharmaceutical industry allows. Unlike the medical industry, dental compressor manufacturers can claim whatever they like with no repercussions. There are no inspection and verification processes. Most dental air compressors use "industrial heads" that are used in tons of industrial applications. Copeland compressors were designed for refrigeration systems. Dental companies simply started using them. Midmark now uses Gast & Cattani. heads. Dental Ez uses Jun Air heads. Those compressor "heads" as they call them have nothing whatsoever to do with dental. They just pump air, period. They need you to believe there is something special about them to justify their prices. The coalescing filter most companies use is made by Wilkerson. Google it. You can buy a replacement filter element from Grainger for about $30. But order on from a dental compressor manufacturing company and they charge you about $120 for the same element that they buy from Wilkerson. Because thy call it a "DENTAL" filter. And some will even try to tell you they make the filter elements. They are industrial filters. They have bare aluminum bowls that corrode on the downstream side of the filter element allowing contaminants to get into the tank and piping system. High quality coalescing filter bowls are internally coated to prevent corrosion. I was astounded to see how I had been misled by the dental compressor companies my entire life. When I got out of dental and moved into medical, people thought I was retarded when I repeated what I was taught in the dental industry. Driest possible. Ultra Clean. Highest flow. Those are all marketing terms that tell you nothing about compressed air quality whatsoever. Thousands of service techs have been misled for generations.
Doesnt catch condensation. Purge tank fills up with dry air as the compressor runs. When compressor turns off after reaching desired pressure, a solenoid opens on the bottom of the dryer chamber full of desiccant beads and allows the dry air in the purge tank to backflow through the drying chamber and out the solenoid valve, therefore drying out and regenerating (drying out) the desiccant making it ready for the next cycle
Not even close. Normal shop compressors don't have any kind of condensate removal, which is very critical for hygiene safety. Let alone the need for very good filtering system anyway.
I was a dental repair tech for over 30 years. I have since learned, that almost everything I ever learned from the dental compressor manufacturers was BS. Most service techs have learned total falsehoods about compressed air systems. It's a shame what many so called professional dental companies are saying about their machines. And the poor service techs have been brainwashed into passing on this BS. A pressure switch is mechanical, NOT electronic. The pressure switch does absolutely nothing to keep a tank from blowing up. that is the job of the safety relief valve located under the pressure switch. The moisture indicator is NOT a filter, it is merely cobalt chloride in a glass window that changes color in the presence of moisture. The coalescing filter cannot and does not remove oil vapors or water vapors, they pass right through. The indicator ONLY works when air is actually passing through the filter. Simply looking at it tells you nothing. It works off of the differential pressure as air is flowing through it. You cant clean coalescing elements they must be replaced. The pre cooler as you call it does NOT cool the air to 10-15 degrees Fahrenheit. You learned that from a lying dental sales rep. It cools the air to within 10-15 degrees of the ambient temperature of the room in which it is installed. It is just a length of copper tubing and has ZERO ability to cool the air to 10 or 15 degrees
I was given a mdt mckesson 20 gallon compressor 220volt .and I was thinking about using it to run my plasma cutter . I run around 80 psi and I have it on a cnc so it runs a lot of the time. Do you think that it could keep up with my demand. My role around dewalt is around 5scfm and does the job but dryer air would make my cutting tips last far longer. Thanks you seem like the guy that would know the answer with all of your experience. On line this compressor goes for anywhere from 1 to 2 thousand dollars used. Crazy.
@@alaskanken2132 Mckesson had 2 compressor lines. An older one that used lubricated compressors made by Copeland. Those went out of existence in the mid 1980s. If you keep oil in them they run OK but pass a lot of oil that you don't want in your equipment. If you use it, keep the filter float drain working and change the coalescing element at least annually. If it's a later model that uses Thomas Industries Oil Free then that's one of my old machines. It would be a semi metallic olive green color. The oil free design cant really run continuous. It needs a lower duty cycle. Time to cool off between cycles. Both the old and the new deliver approximately 4 cubic feet per minute at 80 psi. If your model has 2 pumps on it then you're looking at 8 cfm. Dental application is very low flow. And very (intermittent use) Hope this helps DCI Mckesson took it over from 2006 to 2014.
My dad has a dental compressor for his business. He hired a repair man once when it broke, and the guy left a loner compressor while he fixed my dad's. The guy never came back! Luckily the loner was a nicer compressor than the one being repaired. It's so quiet, you can barely tell it's even on.
I've heard piston compressors and scroll ones are mostly used in dental settings.i wonder why wouldn't they use centrifugal and diaphragm compressors as they're oil free too ? could you please give me a practical comparison of different types of compressors ?
