Question about Delfield 113.28 cu. ft. Commercial Freezer Meridian MFRI3S Stainless Steel

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

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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."

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