R600A compressors

[ilgreco1974]

Any good of these for a DD or a chiler?May i use them with R404?

1)LG electronics inc, LX110Naem, 220V-240V, 50Hz, thermally protected, R600A, V4E0520035286797
http://www.lge.com/products/component/compressor/ref/reciprocating.jsp

2)ASPERA BPE 1111Y, mineral oil, R600A,230 V/50 Hz
http://www.embraco.com/ingles/familia_bp.htm

3)DANFOSS TLS9K,105H,220V-240V,50Hz,R600A
http://www.ra.danfoss.com/ra/Products/ProductCatalogue.asp?BA=&Division=HC&HL=4&HLID=49&AppID={c2a95dac-5e01-47df-92cd-5972d837cf1a}&selectedTab=LI&newguid={EC12C4A7-F2D8-483C-A857-CC3FA7DAE5F1}#

Thanks
:)

[gkiing]

r600a = isobutane, boiling point ~-12C. It wont get very cold with butane, but you could probably use r290 (propane in it) for some good temps.

[Tonic]

It's isobutane, not butane. Even so, it have a boiling point at -11.7*C

Yes, R290 should be a good option, but remember about his flammable properties

Maybe R134a or R22? They're easy to get and cheaply

[ilgreco1974]

Thanks...
I found also this post:
http://www.xtremesystems.org/forums/showthread.php?t=41112&highlight=r600

If you have a real R600a compressor you might run into problems using R404a/R507 or R290.

R600a is a low pressure refrigerant. It needs some more displacement, but doesn't need a strong motor.

I tried it several times but I found out some problems with starting the compressor. The compressors I had were RSIR types, so very low starting torque. With R290 it just wouldn't start anymore.
After replacing the ptc starter with a capacitor (making it a CSIR compressor) I could start it but the capacitor was used about 10 to 15 seconds each start (which is actually too long).

Next problem is that if the backpressure went too high (above 1 bar) the motor didn't have enough power anymore, and would just stop.

And R600a compressors normaly use mineral oil. R404a and R507 require POE so an oilchange is also needed.

So you can get some difficult problems when swichting :)

and i'm afraid that enything different than r600a will not work:(
At least,is it possible to use the r600a compressors as vacuum pumbs?

[gkiing]

It's isobutane, not butane. Even so, it have a boiling point at -11.7*C

Yes, R290 should be a good option, but remember about his flammable properties

Maybe R134a or R22? They're easy to get and cheaply

yeah, that always mixes me up. But remember butene is flammable too :stick:. The starting problems with higher pressure refrigerants will mean a premature death of the compressor. These compressors must have been designed to be energy efficient.