- Thread starter caveman
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It’s quite a common thing to have more than one compressor as a commercial or industrial place, just have them join your air line/ring, as the receivers will just fill to the same pressure to equalise, some people like to have them set to the same pressure so they turn on and off at the same time, or you could step one down 5/10 psi lower so one kicks in and then the second, saves on start up load, obvious depends on your supply
Wildefalcon
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Did this last week using the domestic compressors. I just used a manifold I picked up in Lidl and a few air lines. Worked well for the job, which was using a needle descaler away from the workshop.
AVI_8
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Love that, those little Aldi compressors are 2.5 hp each and you can pick them up second hand for about £40, so there’s about 150 litres and around 18 scfm for not a lot of money
Noisy little bar stewards though!
danger is they have to run so long to fill the larger receiver they constantly run hot and thermal out , get smelly and pack in ,,, other than that ,,, why not.
gaz1
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i prefer to alternate between the compressors
when a is powered b is off when b is powered a is off and you can then run 3 air compressors this way
www.garagejournal.com
you can also use air compressors lead lag control
electronics.stackexchange.com
when a is powered b is off when b is powered a is off and you can then run 3 air compressors this way
alternate between 2 compressors wiring q?
I thought I recall a thread on here where the discussion was about wiring 2 compressors (a&b ) so they would alternate a-b-a-b etc, and if the pressure fell below a certain level they would both kick on. can someone help? tks
www.garagejournal.com
you can also use air compressors lead lag control
interchangeable operation of two electric motors without PLC
I have two motors that drive an air compressor. I have a pressure switch to turn the motors on/off. The sequence I want is: when pressure switch turns ON - motor 1 starts, when pressure switch tu...
electronics.stackexchange.com
roofman
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I have 2 large comps under the bench connected with a link pipe...2nd one kicks in at anything below 55psi to piggy back the 1st one. This set up gives me lots of storage but not 2 pumps going at the same time...The gas bottle i made for filling and pumping the van tires up if too far from the pipe length outstretched.
AVI_8
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That won’t be a problem in this particular case as the pumps are very large in comparison to the cylinders they were connected to, so a 100 litre tank added would be no problem when shared by 2 , I have one of these compressors, iI’ll go from empty to full in not much over 1 minute, I’d guess that those 2 pumps would compress all of those tanks in under 4 minutes
Similar too the set up I’m looking into 2x 200ltrs 2x13.8cfm
best make sure they are on fresh oil ,,, chinese export [ CE ] wont hack it ,, dont forget your also drawing air from the system too ,,, but no harm in giving it a go .
AVI_8
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They don’t come with oil, you have to fill them with oil, what do you mean by drawing air?
the cylinders wont just fill and stop , depending on what your running the compressors may take a long time to reach turn off pressure , the air being drawn off will have an effect on the run time of the compressors . a single dynabrade die grinder gives a fairly decent compressor a hard time if your working it hard.
theres a reason cheap compressors are cheap , and dear ones arent cheap ,,,, but best of luck with the set up.
Wildefalcon
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When I was running mine with the needle descaler, I was using a domestic socket for one compressor and the cooker socket for the other.
This is the effect of running them nearly continuously for 6 hours.
This is the effect of running them nearly continuously for 6 hours.
AVI_8
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Absolutely agree, but if you’re not in the presence of cash and you’ve a couple of small compressors which can be linked, then why not.
Not everyone can afford a compressor that can produce 18 scfm which the above example could theoretically do, that’s a setup for a diy guy and a couple of hundred quid.
Example here for one which can do it from the get go, if cash is not an option. They would produce similar results, though you’d need a descent electrical system for both
Air Compressor Fiac Workhorse 4HP 200L 17.7CFM 240V
Air Compressor Fiac Workhorse 4HP 200 Litre, Belt driven Industrial Air Compressor with 2 year on-site warranty.
www.r-techwelding.co.uk
