Need help with refrideration unit - Home Brew Forums
Home Brew Forums > Home Brewing Beer > DIY Projects > Kegerators & Keezers > Need help with refrideration unit

Reply
 
Thread Tools
Old 08-13-2012, 02:11 AM   #1
Mumbly
Recipes 
 
Apr 2009
Omaha, Ne
Posts: 209
Liked 11 Times on 9 Posts



WEll long story short, we bought a flower cooler, that's gets cold for a while, then won't cool down. The compressor will run but nothing happens. So today we turned it on after being turned off for 4 weeks, after 3 hours this is what we found,

I know it shouldn't be frozen over like that but what is it? And does anyone know of an easy way to keep it from freezing over (I.e. putting a small fan in there to circulate air)

As all thanks for all the knowledge and help


Click image for larger version

Name:	image-2587038974.jpg
Views:	229
Size:	20.0 KB
ID:	71706  

 
Reply With Quote
Old 08-13-2012, 02:13 AM   #2
codycodycody
Recipes 
 
May 2012
wanatah, indiana
Posts: 88
Liked 8 Times on 7 Posts


Needs recharged with freon.


__________________
Hold my beer and watch this

 
Reply With Quote
Old 08-13-2012, 02:14 AM   #3
snackson
HBT_LIFETIMESUPPORTER.png
 
snackson's Avatar
Recipes 
 
Nov 2010
, Here, there, everywhere.
Posts: 374
Liked 44 Times on 34 Posts


It may be low on refrigerant charge. what kind does it take? If it is 134a, you can do it easily yourself.

 
Reply With Quote
Old 08-13-2012, 04:42 AM   #4
Mumbly
Recipes 
 
Apr 2009
Omaha, Ne
Posts: 209
Liked 11 Times on 9 Posts


It was checked for freon, and the repair man said it was good

 
Reply With Quote
Old 08-13-2012, 11:25 PM   #5
Junkster
Recipes 
 
Feb 2011
North Central, Ohio
Posts: 509
Liked 31 Times on 22 Posts


A couple more pics and a make & model number might help. Does the evaporator already have a fan that isn't working perhaps? Did the repair guy go through the entire unit and check everything?

 
Reply With Quote
Old 08-13-2012, 11:37 PM   #6
Mumbly
Recipes 
 
Apr 2009
Omaha, Ne
Posts: 209
Liked 11 Times on 9 Posts


Make and model are unknown, we looked the over the whole unit and found no marking of a manufacturer. These are pics of it today. There is what looks like (closest comparison I know of) a car radiator with a fan that does run, it is behind and to the left of the frozen part in the pictures it you can't see it. The box on the right of the piece that is freezing over has a lot of condensation on it.
Click image for larger version

Name:	image-310845143.jpg
Views:	168
Size:	65.0 KB
ID:	71806   Click image for larger version

Name:	image-2682848731.jpg
Views:	161
Size:	31.7 KB
ID:	71807  

 
Reply With Quote
Old 08-13-2012, 11:42 PM   #7
Gartywood
Recipes 
 
Jul 2011
Windsor, CT
Posts: 306
Liked 10 Times on 10 Posts


If you have correct air flow and clean coils low refrigerant is the issue. How did the repair man diagnose correct refrigant level?

 
Reply With Quote
Old 08-13-2012, 11:54 PM   #8
Mumbly
Recipes 
 
Apr 2009
Omaha, Ne
Posts: 209
Liked 11 Times on 9 Posts


He was more confused by the whole thing, but he tested to make sure there were no air bubbles. How do you test to see what kind of coolant it is, the problem is since it is a commercial unit in a residential home that has no manufacture markings it's hard to find repairmen to come out and work on it

 
Reply With Quote
Old 08-14-2012, 03:43 AM   #9
beaksnbeer
HBT_LIFETIMESUPPORTER.png
 
beaksnbeer's Avatar
Recipes 
 
May 2011
New Port Richey, Florida
Posts: 2,844
Liked 505 Times on 334 Posts


That may be a TXV valve under the ice, this valve malfunction could cause your problem even with a correct charge. How did he check the charge if he didn't even know what type of refrigerant is in the system there are several choices and each one has different temperature/pressure. I think your repair man may not have experience with refrigerated equipment he may only work on A/C units. I would call a service that works on this type of equipment.....IMHO
__________________
Quote:
Home of the 12 Tap keezer

 
Reply With Quote
Old 08-14-2012, 02:29 PM   #10
Junkster
Recipes 
 
Feb 2011
North Central, Ohio
Posts: 509
Liked 31 Times on 22 Posts


That is the TXV that's frosted over. The car radiator looking thing is the condenser and its fan should run when the compressor does. Inside the box where the frosted line enters is the evaporator and I would expect there to be a fan inside there somewhere. That should be checked to see that it's running. There may be a label on the compressor that tells which refrigerant it uses or at least it could be looked up by the compressor number. If the tech was checking pressures, this is something he should have known to see if his observations were valid.

Floral cases are designed to maintain higher humidity levels than normal beverage coolers and may use oversized, low-speed evaporator fans which are baffled so the cooled air velocity is much lower.

Another thing to check is to see if the control is shutting off the compressor when the desired setpoint is reached. There are many things the refrigeration tech should have checked if he spent much time with this unit which may be beyond the scope of discussion here......



 
Reply With Quote
Reply
Thread Tools



Forum Jump