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What if I buy the compressor for the service kit and part out the compressor to make the parts kit cheaper
Are your parts genuine Bauer interchangeable dude
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Bauer offers the Junior II in a lower power option probably for USA 120v users so they can run it on a typical home circuit. That model comes with a 2HP motor. It's the JRII-E1-2HP and the motor is run at 1400 RPM. So maybe the example in the YT video is closer to that? It would be interesting to know if the cooling fan or anything else is different. I'm looking at the list of Junior II models on:Everything is electrically fine, but it's questionable whether this is good for the compressor.
1.) Due to the low RPM of the compressor from the chosen gear ratio, the cooling is weak.
An additional electric fan may be required here.
2.) There could be issues with lubrication.
3.) There could be oscillation problems.
Both of these may not be the case, but operating the compressor at half rpm puts it outside the usual range. The compressor manufacturer Mohnsam warned me about this.
To add to your headache I should offer some better information than in my last post.@CG43 What motor would you use if you wanted to have a 3 phase one (with VFD) with a 230v 50hz power source and running the compressor at 2100 RPM? I don't understand the efficiency parts with the VFD (I'll go google to try to learn more). And how much more efficient would that be over using the single phase 230v motor already on the compressor?
An alternative not yet mentioned would be to find a RIX SA-3 on the used marketOne of my never-gonna-happen pipedreams is to
retire
sell it all
buy a liveaboard boat
and explore
a random thought pops into my head this morning about my pipedream on a liveaboard
I would ideally need a small compressor onboard. It wouldn't need to be a fast fill.
A long time ago I was certified as a nitrox and trimix blender, but I never really got into the weeds of maintaining and operating the compressor. I just remember it being a rather high-maintenance thing.... service intervals, filters, etc... but I never got into the weeds of it
so crude ballpark cost for a small compressor for that sort of application?
and what sort of ongoing maintenance/service is required for such a thing?
They are belt drive. You can run the compressor at any RPM you want to.Hello
Okay, very good, you may also operate the compressor at 1400 RPM.
The specified speed is the speed of the compressor.
To be sure, the example JR-E3 at 2100 RPM:
At 60Hz, the synchronous RPM would be either 3600 RPM or 1800 RPM.
2100 is higher than 1800, so only 3600 RPM can be considered as the synchronous speed.
However, that would mean a slip of (3600-2100) /3600 = 0.42.
Since slip directly reduces efficiency, the motor would have an efficiency significantly worse than 0.58.
This is unrealistic for a three-phase motor of this size.
Therefore, only the compressor RPM should be considered.
I'm sorry but that statement is simply not true and for multiple reasons.They are belt drive. You can run the compressor at any RPM you want to.