venturesomerite
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Got a new compressor
- Thread starter venturesomerite
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strutaeng
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A few answers:
1) Measure the tank dimensions
2) I don't understand your question. Unloaders are not wired. Do you mean pressure switch?
3) I don't know
4) It looks like you have a 3-phase motor? Do you have 3-phase power? Does the motor have a name plate or wiring diagram?
Do you have a photo of the "patch" on the tank?
From the tank specifications plate, it is 49 years old. I would advice you to take out the inspection ports (2 large square drive plugs) and peek inside with a boroscope or flashlight. Your goal is to make sure the bottom of the tank is not excessively corroded or pitted.
Good luck
1) Measure the tank dimensions
2) I don't understand your question. Unloaders are not wired. Do you mean pressure switch?
3) I don't know
4) It looks like you have a 3-phase motor? Do you have 3-phase power? Does the motor have a name plate or wiring diagram?
Do you have a photo of the "patch" on the tank?
From the tank specifications plate, it is 49 years old. I would advice you to take out the inspection ports (2 large square drive plugs) and peek inside with a boroscope or flashlight. Your goal is to make sure the bottom of the tank is not excessively corroded or pitted.
Good luck
Steevo
Well-known member
That is a beauty. Probably a 10 HP 3-phase motor and at least a 20CFM pump.
I'd be extremely careful with that tank. Not sure what constitutes a "patch". Did you have it professionally hydrotested? That tank has a MAWP of 200 PSI and that's what it should be hydrotested to at minimum. Tanks are welded per ASME and you can easily get yourself killed or kill someone else if that tank ruptures. Please be cautious. That compressor is definitely 2-stage and capable of constantly delivering 175 psi at probably 20 cfm all day every day. That is most likely a 230-460v/3ph/60 hz motor by the looks of it and by you providing wire description. I've never seen a 230v/1ph/60hz compressor duty motor not incorporate start capacitors and/or start-run capacitors. Plus, a 230v/1ph/60hz motor only has two wires.
If you don't have 3ph power available, you've got some serious money to be spending to get this up and running.
Next, I don't see a definite purpose magnetic starter with thermal overload protection in the picture. Without a mag starter, you can't start/stop the motor.
If you don't have 3ph power available, you've got some serious money to be spending to get this up and running.
Next, I don't see a definite purpose magnetic starter with thermal overload protection in the picture. Without a mag starter, you can't start/stop the motor.
OP
venturesomerite
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mr-compressor
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- Aug 8, 2012
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Be very careful with a tank like that!
Find another old broken air compressor with a good tank and use that good tank for this air compressor.
It doesn't have to be exactly the same size. Bigger is better. A little smaller isn't a problem either.
Better first check if the compressor/motor is still OK, before you spend all money on electrical installation work and new parts etc.
I've read lots of stories here from guys that spend a lot of money on their new old air compressor, only to find out it's broken.
Find another old broken air compressor with a good tank and use that good tank for this air compressor.
It doesn't have to be exactly the same size. Bigger is better. A little smaller isn't a problem either.
Better first check if the compressor/motor is still OK, before you spend all money on electrical installation work and new parts etc.
I've read lots of stories here from guys that spend a lot of money on their new old air compressor, only to find out it's broken.
Post up pictures of the "patch" in bottom of tank. That is a very bad sign as to why you "got a deal" on the compressor.
Drain any water and air in tank. Then pull large bung holes and get scope to check out inside of tank. Be SAFE before firing that thing up!!
Drain any water and air in tank. Then pull large bung holes and get scope to check out inside of tank. Be SAFE before firing that thing up!!
OP
venturesomerite
Well-known member
Post up pictures of the "patch" in bottom of tank. That is a very bad sign as to why you "got a deal" on the compressor.
Drain any water and air in tank. Then pull large bung holes and get scope to check out inside of tank. Be SAFE before firing that thing up!!
oh after actually looking at the thing, the tank is toast. Looking for a replacement one that I can actually afford. I bought it for the compressor any ways.
theoldwizard1
Well-known member
As for the unloader, there is nothing to "wire up". They are some kind of mechanism that "senses" the pump has stop and then bleeds off the residual pressure in the head. Different designs for different pumps.
That thing is a bomb looking for a place to go off.
Air receivers are readily available from McMaster, among other places. It would be well worth it to buy a new one. If that thing goes off at 175 PSI it will level your garage.
Edit: You replied while I was typing. Good call!