walk in cooler won't cool - Plumbing Zone

trout lake · 08-04-2009, 12:54 AM

Need some info on this point:

I have a walk in that is perking out 60f temps.
It has a Tecumseh compressor water cooled in the basement crawl pumping up to a duel fan evaporator in the cooled. I have:
set the high head to bang on 200psi: got the suction at 60 psi (should be cooling at 32f): no problems with the accumulator or dryer: cleaned the evaporator coil so you can eat off it: tested the 2 fans for amp draw and rpm: checked the compressor and it only draws 5.6 amp fla.

Why the hang can't I get better than 60f cooling? I haven’t gone as far as sizing the unit to the cubic feet in the cooler because I didn't think it necessary. I worked before. This drop in temp has been an ongoing thing over the past 2 months
thanks
tl

Bollinger plumber · 08-04-2009, 09:59 AM

Quote:

Originally Posted by trout lake

Need some info on this point:

I have a walk in that is perking out 60f temps.
It has a Tecumseh compressor water cooled in the basement crawl pumping up to a duel fan evaporator in the cooled. I have:
set the high head to bang on 200psi: got the suction at 60 psi (should be cooling at 32f): no problems with the accumulator or dryer: cleaned the evaporator coil so you can eat off it: tested the 2 fans for amp draw and rpm: checked the compressor and it only draws 5.6 amp fla.

Why the hang can't I get better than 60f cooling? I haven’t gone as far as sizing the unit to the cubic feet in the cooler because I didn't think it necessary. I worked before. This drop in temp has been an ongoing thing over the past 2 months
thanks
tl

Might get a better response if you post your question in the hvac forum rather than this one.

Protech · 08-04-2009, 10:12 AM

assuming that this is a fixed orifice tube or cappilary tube system, I would say you are ether low on HCFC or the compressor isn't putting out as much as it should. HVAC isn't my specialty though. Have you checked the motor running amps against what it's spec'd for? Are your guages where they need to be on the high and low sides?

trout lake · 08-04-2009, 02:13 PM

Protech
refridgerant levels are as they should be. As I mentioned the compressor was amped and is ok. As far as the hoses on the right ports....now really!!!!!!!!
thanx
tl

08-04-2009, 12:54 AM	#1
trout lake Member Join Date: May 2009 Location: british columbia canada Posts: 82 My Photos	walk in cooler won't cool Need some info on this point: I have a walk in that is perking out 60f temps. It has a Tecumseh compressor water cooled in the basement crawl pumping up to a duel fan evaporator in the cooled. I have: set the high head to bang on 200psi: got the suction at 60 psi (should be cooling at 32f): no problems with the accumulator or dryer: cleaned the evaporator coil so you can eat off it: tested the 2 fans for amp draw and rpm: checked the compressor and it only draws 5.6 amp fla. Why the hang can't I get better than 60f cooling? I haven’t gone as far as sizing the unit to the cubic feet in the cooler because I didn't think it necessary. I worked before. This drop in temp has been an ongoing thing over the past 2 months thanks tl

08-04-2009, 10:12 AM	#3
Protech ٩(͡๏̯͡๏)۶ Join Date: Sep 2008 Location: Polk County, Florida Posts: 7,167 My Photos	assuming that this is a fixed orifice tube or cappilary tube system, I would say you are ether low on HCFC or the compressor isn't putting out as much as it should. HVAC isn't my specialty though. Have you checked the motor running amps against what it's spec'd for? Are your guages where they need to be on the high and low sides? __________________ Plumber, Repiping, Replumbing, Leak Detection, Solar Water Heater, Drain Cleaner, Pipe Leak, Polk County Plumber, Lakeland Plumber, Winter Haven Plumber, Haines City Plumber, Bartow Plumber

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08-04-2009, 02:13 PM	#4
trout lake Member Join Date: May 2009 Location: british columbia canada Posts: 82 My Photos	Protech refridgerant levels are as they should be. As I mentioned the compressor was amped and is ok. As far as the hoses on the right ports....now really!!!!!!!! thanx tl