Recharge Refrigerant (R134) - HVAC - Contractor Talk

Recharge Refrigerant (R134)

 
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Old 08-13-2017, 07:17 PM   #1
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Recharge Refrigerant (R134)


Can we use Artic Freeze synthetic R134a+ that sell at Harbor Freight to recharge on the refrigerator (Kenmore)?

The refrigerator label indicated that R134 with 4.96oz to be used so I assume that we can recharge any R134 refrigerant either with a regular or synthetic.

Someone at the store said that the Artic Freeze R134A+ is used for Auto but I can be used for refrigerator too as long as it doesn't over charge.

I'd like to get more inputs from experts.

Thanks,
Randy


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Old 08-13-2017, 07:22 PM   #2
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Re: Recharge Refrigerant (R134)


do you have a tap on the refer to even add refrigerant?

when refrigerant runs low there is likely something way wrong somewhere in the system.....

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Old 08-13-2017, 08:12 PM   #3
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Re: Recharge Refrigerant (R134)


I have a bullet piercing value to tap on the processing tube. I tried to change a relay and overload relay protector but it didn't help. The compressor seems running fine as well as condenser fan. I just need to check the freon level by using the gauge. Just need to confirm whether the synthetic R134A+ can be recharged for the refrigerator. Any thoughts?


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Old 08-13-2017, 08:15 PM   #4
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Re: Recharge Refrigerant (R134)





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Old 08-14-2017, 09:21 AM   #5
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Re: Recharge Refrigerant (R134)


should be alright.you have gauges to check the charge? Anywhere on the nameplate that indicates how much the factory charge was?
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Old 08-14-2017, 01:04 PM   #6
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Re: Recharge Refrigerant (R134)


The label inside the refrigerator indicated 4.96Oz for R134A


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Old 08-14-2017, 01:09 PM   #7
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Re: Recharge Refrigerant (R134)


Have anyone done this before by using the synthetic R134A+ for Auto on the refrigerator? Does it really work? What's the difference between the R134A for Auto and R134A for refrigerator????


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Old 08-14-2017, 11:23 PM   #8
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Re: Recharge Refrigerant (R134)


R134a is R134a, just be sure it doesn't contain oil or any other additives (maybe it doesn't matter but in such a small system I wouldn't want to add anything other than refrigerant).
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Old 08-15-2017, 08:14 AM   #9
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Re: Recharge Refrigerant (R134)


134a is 134a.

Auto recharge cans frequently have leak stop, PAG oil, UV dyes,...
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Old 08-15-2017, 09:33 AM   #10
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Re: Recharge Refrigerant (R134)


Quote:
Originally Posted by randyle2015 View Post
Have anyone done this before by using the synthetic R134A+ for Auto on the refrigerator? Does it really work? What's the difference between the R134A for Auto and R134A for refrigerator????


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What have you got to lose? If they system is low on refrigerant, it doesn't do you much good, otherwise. Unless you want to put a block of ice on the top cabinet, every few days.
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Old 08-15-2017, 10:17 AM   #11
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Re: Recharge Refrigerant (R134)


Quote:
Originally Posted by hdavis View Post
134a is 134a.



Auto recharge cans frequently have leak stop, PAG oil, UV dyes,...


That's true. Other said that it's better to use pure R134A which normally come in a big tank (clean without oil) instead of using the refrigerant 12 oz can for auto where they put 1 or 2oz of oil.


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Old 08-15-2017, 10:59 AM   #12
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Re: Recharge Refrigerant (R134)


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Other said that it's better to use pure R134A which normally come in a big tank
I've bought plenty of small cans that had nothing but refrigerant.
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Old 08-15-2017, 03:24 PM   #13
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Re: Recharge Refrigerant (R134)


Quote:
Originally Posted by randyle2015 View Post
That's true. Other said that it's better to use pure R134A which normally come in a big tank (clean without oil) instead of using the refrigerant 12 oz cans for auto where they put 1 or 2oz of oil.


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Old 08-17-2017, 12:02 AM   #14
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Re: Recharge Refrigerant (R134)


You should evacuate the system and weight back in the correct charge. Only way to get it right with such a small charge! You won't get it right using your gauges. The question is were it went.

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Old 08-20-2017, 09:39 AM   #15
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Re: Recharge Refrigerant (R134)


I replaced the compressor, vacuum all the air out and then recharged refrigerant (R134a) slowly. After reading the low side gauge, it shows 3psi which is expected. I have waited for 10 hours and the refrigerator still not cooling. I did even replaced relay, overload protector relay and filter dryer and still not cooling. Any suggestions? Check Defrost timer?


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Old 08-20-2017, 10:31 AM   #16
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Re: Recharge Refrigerant (R134)


Possibly a restriction at the metering device.
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Old 08-20-2017, 10:34 AM   #17
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Re: Recharge Refrigerant (R134)


Quote:
Originally Posted by sailsfast View Post
You should evacuate the system and weight back in the correct charge. Only way to get it right with such a small charge! You won't get it right using your gauges.
Maybe this...
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Old 08-20-2017, 12:36 PM   #18
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Re: Recharge Refrigerant (R134)


I would absolutely weight in the charge. I'm no a/c pro (obviously), it took me 3 tries with my truck and finally called my a/c buddy and he said weight it in. The gauges looked good when I charged it but the system is designed for whatever that sticker says the weight should be. Weighted in the charge and while it seeed a little low on the suction side its been problem free since.
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Old 08-20-2017, 04:37 PM   #19
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Re: Recharge Refrigerant (R134)


That's very interesting...if the weight is off that system is required then it won't cool even though it's not over charge? I don't have a right equipment to weight it. I was thinking the other components could be failed hence the system won't cooling...


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Old 08-20-2017, 05:29 PM   #20
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Re: Recharge Refrigerant (R134)


Time for a new fridge..

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