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Can a delfield model 407 using r12 freon be modified with a new compressor to use current refrigerants

The model 407 I own does not work, it appears in fairly good condition, the compressor turns on but does not sound good. It does not cool. I would like to replace the compressor with a new one using acceptable freon. Can this model be modified to do this ?

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  • 39 Answers

Yes it can. if the model is a techumseh find the local dealer.
give them the compressor model # and get the new 134a model
equivelant. no oil change . replace the filter drier when you replace it .the refrigerant charge will be about 90% of the original r-12 charge

Posted on Apr 18, 2013

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Posted on Jan 02, 2017

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SOURCE: I have an upright freezer and it only cools down

Clean coils if no help cleck refrigerant.

Posted on Jul 07, 2009

  • 1150 Answers

SOURCE: Delfield 6000xl: what is the 404a freon charge?

http://www.delfield.com/?xhtml=xhtml/del/us/en/general/partsandservice/archivemanuals.html&xsl=minisite.xsl
this is for their web site. It has all the manuals and charging tables. There is no 6000xl. Need exact model number as the amount varies.
Hope this helps

Posted on Apr 01, 2010

  • 1150 Answers

SOURCE: Delfield 6000xl: what is the 404a freon charge?

http://www.delfield.com/docs/uploaded/del/Serviceinfo/ref_serv.pdf
this web site has a table of units and their respective charging amounts.
Hope this does it for you.

Posted on May 11, 2010

  • 193 Answers

SOURCE: Delfield MD # 6151 - S Sr # 206156-T not pulling

Take the top cover off that is next to the compressor,. That cover is about 30 by 30 inches. You will see two fans and an evaporator coil. Several things can happen. First these fans won't come on until the coil is somewhere around 10 degrees or if the door is open. So, once the freezer has been running look under the big cover and be sure both fans are running. If one or both are not running it won't pull down to 0. Also look at the coils and see how much frost has accumulated. If your defrost timer is not working it may be frozen over. When that happens air is blocked from reaching the inside of the freezer. While you are at it, fell of the coils if they are only partially freezing, you may be low on freon. If you have gauges to check the freon charge, check both the high side and the low side pressures. If the high side is less than 200 psi, you have some freon, but maybe not enough. If the high side pressure is 300 psi, you have something blocking the freon from returning to the compressor. Usually a blocked cap tube or a malfuncting expansion valve. Finally check the condenser coils which is the radiator thing out where the compressor is located. If it clogged with dust and grease, it will not dissapate the heat from the freon and will intefere with the operation of the entire unit. Clogged condener coils are probably the number one cause of burned out compressors. Good luck.

Posted on Sep 17, 2010

Testimonial: "Unit still had R 12 in it and someone had charged it and had air in the lines I reclaimed the unit and retrofited it with R 206 and it is find now."

  • 1150 Answers

SOURCE: Is it possible for a

I would look to see if it is tripping during the defrost cycle. One of the heater elements my be faulty. Never heard of a bad TXV causing a breaker tripping, but I guess it's possible. I would adjust the superheat so that it is about 6 to 8 degrees just prior to unit reaching temp and shutting off. I'd start there.

Posted on Apr 13, 2011

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1 Answer

Delfield MD # 6151 - S Sr # 206156-T not pulling down to Temp set at -10 and only pulling down to 24 freon is good


Take the top cover off that is next to the compressor,. That cover is about 30 by 30 inches. You will see two fans and an evaporator coil. Several things can happen. First these fans won't come on until the coil is somewhere around 10 degrees or if the door is open. So, once the freezer has been running look under the big cover and be sure both fans are running. If one or both are not running it won't pull down to 0. Also look at the coils and see how much frost has accumulated. If your defrost timer is not working it may be frozen over. When that happens air is blocked from reaching the inside of the freezer. While you are at it, fell of the coils if they are only partially freezing, you may be low on freon. If you have gauges to check the freon charge, check both the high side and the low side pressures. If the high side is less than 200 psi, you have some freon, but maybe not enough. If the high side pressure is 300 psi, you have something blocking the freon from returning to the compressor. Usually a blocked cap tube or a malfuncting expansion valve. Finally check the condenser coils which is the radiator thing out where the compressor is located. If it clogged with dust and grease, it will not dissapate the heat from the freon and will intefere with the operation of the entire unit. Clogged condener coils are probably the number one cause of burned out compressors. Good luck.

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Delfield 6000xl: what is the 404a freon charge?


http://www.delfield.com/docs/uploaded/del/Serviceinfo/ref_serv.pdf
this web site has a table of units and their respective charging amounts.
Hope this does it for you.

May 09, 2010 | Freezers

1 Answer

Delfield 6000xl: what is the 404a freon charge?


http://www.delfield.com/?xhtml=xhtml/del/us/en/general/partsandservice/archivemanuals.html&xsl=minisite.xsl
this is for their web site. It has all the manuals and charging tables. There is no 6000xl. Need exact model number as the amount varies.
Hope this helps

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