Restaurant reach in cooler

Posted by olddog on May 14, 2009, 12:51 pm

> Sounds like short term thinking. Few bucks now, instead of a
> lot of bucks now. Over the years, the new cooler is probably
> cheaper.

In the mean time the guy is using a cooler that may or may not work. When
the public health is at stake I think he should do the right thing and have
equipment that is working properly. Just sounds like some cheap restaurant
manager trying to turn a monthly profit so he gets a bonus.

IMHO

od

Posted by Stormin Mormon on May 14, 2009, 10:36 pm

Taking his report, and running with it. That means he has a
cooler full of warm food twice a year.

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

In the mean time the guy is using a cooler that may or may
not work. When
the public health is at stake I think he should do the right
thing and have
equipment that is working properly. Just sounds like some
cheap restaurant
manager trying to turn a monthly profit so he gets a bonus.

IMHO

od

Posted by Stormin Mormon on May 14, 2009, 8:45 am

The question is.... if I put 134a into an old R-12 system,
will that cause any big problems? Oil return, or not
supplying enough juice, or starving the evaporator (and not
cooling the box) or, anything else?

It's leaking some where, cause the box needs refrigerant
added every six months.

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

Chris you are stating facts but no complain
And as far as leak get you self H-10 leak detector
and if is leak on the coil it will find it, but what you
saying
I don't think that evaporator is leaking
have fun YM
Tony-S

in message

> Last couple days, I've had the chance to work on a reach
> in
> cooler, at a restaurant. Under a counter. The old guy who
> runs the place says it needs freon every six months. The
> aluminum evaporator gets wet, and probably has a lot of
> pinhole leaks. I checked all the fittings, and find no
> leaks
> at fittings or braze joints. Metering device is TXV, and
> the
> system has a receiver.
> The system is probably 30 plus years old. The evaporator
> is
> above the compressor. About 8 inches higher, and maybe six
> feet to the side.
> Since the evaportator his higher, perhaps oil return isn't
> an issue. Since it runs off a TXV, maybe it will adjust to
> the lower heat capacity of 134a. Has anyone else tried
> such
> a conversion? I'd much rather be feeding it 134a, compared
> to some other gas or blend.
> --
> Christopher A. Young
> Learn more about Jesus
> www.lds.org
> .

Posted by Don Ocean on May 14, 2009, 11:25 pm

Stormin Mormon wrote:

> The question is.... if I put 134a into an old R-12 system,
> will that cause any big problems?

Yes! There are drop in replacements. Tghere are minisculibility
issues that are resolved by using a drop in. Chemicals to cleanse
mineral oil out and to replace with PAG is close to $100 your cost, plus
lost time.

Oil return, or not

> supplying enough juice, or starving the evaporator (and not
> cooling the box) or, anything else?
>
> It's leaking some where, cause the box needs refrigerant
> added every six months.

Find the leak. Fix the leak. do the usual evac and fill and be on your
way. If the system is really old and defunct replace it with new and
more efficient.

Posted by Stormin Mormon on May 15, 2009, 9:49 am

That figures. I did beep all the fittings and braze joints.
No leak found. So, it's very possible some tiny leaks in the
evaporator. The old guy who runs the place would rather buy
a couple ounces of refrigerant couple times a year, instead
of replace the evaporator.

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

Stormin Mormon wrote:

> The question is.... if I put 134a into an old R-12 system,
> will that cause any big problems?

Yes! There are drop in replacements. Tghere are
minisculibility
issues that are resolved by using a drop in. Chemicals to
cleanse
mineral oil out and to replace with PAG is close to $100
your cost, plus
lost time.

Oil return, or not

> supplying enough juice, or starving the evaporator (and
> not
> cooling the box) or, anything else?
> It's leaking some where, cause the box needs refrigerant
> added every six months.

Find the leak. Fix the leak. do the usual evac and fill and
be on your
way. If the system is really old and defunct replace it with
new and
more efficient.

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