How to change oil in a rotary compressor?

Posted by Steve on July 27, 2009, 9:44 am

> Hello, Im new to this forum.
> I have a brand new small R22 Fuji rotary (on/off) compressor which I
> intend to
> use for 407C and therefore an oil change to Ester type is neccesary.
> Can only drain oil (~300ml) out of a hole I drilled close to the
> connection (HP) non from the suction line (muffler is removed). From
> what I have read there should be some oil also in the lower (suction)
> part or...?

Why not get a compressor with the correct oil in it in the first place??

Posted by Lars S on July 27, 2009, 2:14 pm

> > Hello, Im new to this forum.
> > I have a brand new small R22 Fuji rotary (on/off) compressor which I
> > intend to
> > use for 407C and therefore an oil change to Ester type is neccesary.
> > Can only drain oil (~300ml) out of a hole I drilled close to the
> > connection (HP) non from the suction line (muffler is removed). From
> > what I have read there should be some oil also in the lower (suction)
> > part or...?

> Why not get a compressor with the correct oil in it in the first place??

Thats logical, but the reason is that got this new compressor for free
some time ago and it fits wery well (except for the oil) in my project
which will be much cheaper to realize if I dont have to buy a new one.

Everyone with ideas around oil change in rotarys are welcome!

/Lars S

Posted by Stormin Mormon on July 27, 2009, 9:27 pm

Please be kind enough to tell us what you're doing. You
building a walk in cooler, or what?

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

Everyone with ideas around oil change in rotarys are
welcome!

/Lars S

Posted by Lars S on July 28, 2009, 1:08 am

On 28 Juli, 03:27, "Stormin Mormon"

> Please be kind enough to tell us what you're doing. You
> building a walk in cooler, or what?
> --
> Christopher A. Young
> Learn more about Jesus
> =A0www.lds.org
> .
> Everyone with ideas around oil change in rotarys are
> welcome!
> /Lars S

No, this is a heat pump project, the evaporator is approx 50m copper
tube in the soil, the condenser is indoors blowing hot air. These
systems are quite common up in our arctic regions.
For me it is a low cost project were I can find most of the parts for
free since I work in conjuction with a refrigeration company.

/Lars S

Posted by Stormin Mormon on July 28, 2009, 8:29 am

Hmm. So, you'd need a low temp referigerant, to absorb heat
at low temps. R-22 could work.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

No, this is a heat pump project, the evaporator is approx
50m copper
tube in the soil, the condenser is indoors blowing hot air.
These
systems are quite common up in our arctic regions.
For me it is a low cost project were I can find most of the
parts for
free since I work in conjuction with a refrigeration
company.

/Lars S

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How to change oil in a rotary compressor? - Page 2