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We have an imperial upright ''commercial grade'' freezer. The top shelf has 2 inches of ice on it. The rest of the freezer is not cold. Door seal is ok. freezer is currently unplugged and defrosting.

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Just to be sure that your door is sealing properly, put a flashlight into the freezer and turn off all of the lights in the room to see if there are any openings in the seal. Iam suggesting you this coz sometimes a small opening may pass our eyes easily....

if the door is sealing properly......
If this is the type of freezer where the shelves are the evaporator coils, the coolant goes through the shelves(tubing) and the formation of frost is normal and has to be manually defrosted.All the shelves should be as cold asd the top one. The fact that just one has any frost may indicate that it is low on freon. If this is the case you should notice that the freezer doesn't get cold enought just like you said... so check your freon levels.

This could also be because of the thermostat not sensing when the fridge reaches its set temperature and as a result of this the compressor will keep on running and build-up of ice will occur.

Follow the advices in the order prescribed above and you should be set




Posted on Jul 27, 2010

  • 1 more comment 
  • brianmcgee32 Jul 27, 2010

    Only the top shelf is cold. Items on the middle shelf (jug of Water) freezes after 3 days. How do I check the freon level?

  • SAM JAYANTH CHANDRASEKAR

    Firstly, 'freon' is just a brand name for what is properly called
    refrigerant. In order to legally determine whether or not you have
    sufficient refrigerant in your system you would need a special
    certification from the EPA.

    I suggest you call someone in who is properly certified to take a look at it. You need very specialized equipment to add refrigerant and test pressure. It canot be done without proper experience. if after doing the flash light test and confirming there is no seal problems this is the only way forward

  • brianmcgee32 Jul 29, 2010

    Defrosted freezer and left unplugged for 3 hours. Cleaned and dried interior of freezer. Plugged it back in and set control to 7 (Coldest). Checked seal using the recommended flashlight method. No gaps in door seal.



    This freezer has 5 shelves, only 1 is adjustable. The other 4 are the freezer elements and are piped to the condenser and compressor. There is another freezer element attached to the top of the freezer compartment. I think this is the condenser.



    After 24 hour of being plugged in and set at 7 the interior temperature is 66 degrees F (ambient 74 degrees). There is a 2 inch ice ball formed on the top shelf in the left rear corner, near where the tubing connects to the shelf. There are water drops on the shelf extending about 4 inches from the ice ball.



    The compressor appears to be running continuously and is hot to the touch.



    What do you recommend?

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Frost build up especially on top shelf all other shelves except one gets a 3 inch layer of ice in approx 4 months. The freezer is kept in a mod temp basement room and the freezer door is opened less than...


Things you can do to cut down on frost.
1.make sure all seals fit flush to frame.
2.use a thermometer and set freezer to -18c(beef will keep upto 12months).
3.wrap all food as airtight as poss.
3.do not overfill,leave space for air flow through drawers/shelves.
4.defrost every 2/3 months in humid conditions using clorine bleach to clean interior,and dry thoroughly.(leave door open to dissipate clorine gas.)

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I have severe ice forming in my freezer.


Hi,

On this unit the shelves are the cooling coils and carry the refrigerant (freon) through the system. They will attract the warm moist air by design, so if you have an air leak in the door or elsewhere it will tend to build up there first.

This being said you need to check something else first. Make sure the other shelves are cold. If they are frosted and cold like normal then you most likely have a door that is not closing all the way or a bad seal. If the lower shelves are not cold then you have a system problem, typically a refrigerant (freon) leak that is causing the top shelf to absorb most of the work and not enough refrigerant to flow to the bottom shelves.

I hope this helps

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The top shelf in my upright freezer ices up badly; but the rest of the freezer is great - no ice! What causes this and is there something I can put on that shelf to keep the ice from building up.


If this is the type of freezer where the shelves are the evaporator coils, the coolant goes through the shelves(tubing) and the formation of frost is normal and has to be manually defrosted.All the shelves should be as cold asd the top one. The fact that just one has any frost may indicate that it is low on freon. If this is the case you should notice that the freezer doesn't get cold enought.

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I would look at the defrost control [sometimes they are defrost clocks]Maybe that the freezer is not defrosting.

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Door doesn't close properly, leaks water


If the door seals are still pliable and intact there are two possible causes.

1/ The upper door hinge on the top of freezer unit has two adjusting screws under a plastic cover/cap which allows the upper hinge to be set forward or back altering/adjusting the spacing of the door seal to the freezer body. Moving the hinge outward at the top will cause the door to seal tighter at the bottom and lessen escaping cold air and condensation to form (water droplets). Adjust carefully so as not to create a weak seal (air gap) along other sealing edges of the door frame.

2/ Many United Refrigeration Commercial Freezers are manual defrosting. Moisture from inside the freezer can condense between the inner molded door panel (door shelves) and the exterior metal door. Usually ice buildup will occur in this space, but when defrosting or during high ambient temps the ice will melt and drip out along the bottom door edge/seal. Screws alomg the door frame (hidden by the door seal) hold the seal in place and also the inner molded door panel. The inner panel can be removed to replace the seal or to remove the ice buildup.

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Upright freezer door inside developing ice


The door seal is at fault. Regardless of the small tear it is not sealing well.
Take a dollar bill and close it in the door. Then pull on the bill to feel resistance.
You will find it pulls easily in some place. That is where your air leak is that is causing the condensation.
Do this about every 6 inches all the way around the seal.

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Ice forming very fast on top shelf only


You said you checked the seal but one thing you can try to be double sure the seal is tight put a thin layer of vaseline along the entire seal it will fill in any gaps and you can be sure it is sealing completely.

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My woods upright freezer keeps frosting up at the top with several inches of frost. It is a manual defrost freezer. Any suggestions?


check your door seal, by closing the door on a strip of newspaper all round the seal. this fault is usually air getting inside the freezer, it rises to the top making thick ice or snow.

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The reason for ice buildup is an air leak. Recheck all around the gasket by taking a dollar bill and closing the door on it and pulling it out. If you don't have resistance, you found your leak. Heat that area with a blow dryer to relax the gasket and close the door to let the magnet and seal set. Also, rub some vasoline on the hinge side gasket to keep it from dragging.

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DR....let's go down the list:

First is freeze up. This happens when too much humidity gets into the unit from the air and forms ice on the coils. Defrost the unit using warm air or leave it open and off for two days.

Problems that cause this: high humidity, 'window shopping', unit not left closed or bad gasket. If the gasket looks damaged, it will need to be replaced. Gaskets that have accumulated dirt don't seal. Use a mild cleaner to fix this. If you have doubts about an area where the seal is questionable...use a sheet of paper about 2-3 inches wide, close the door and pull it through. No resistance indicates a poor seal.

Make sure you clean out the condenser...the coils where the heat is rejected by the unit.

It is possible that you have refrigerant or defrost timer issues. To check for low refrigerant, start the unit after defrosting it. Note that the larger pipe attached to the big black thing....the compressor...will start to frost. It should then start to form ice while the unit is running...about 5 minutes. If the frost stays and the pipe is not REALLY cold, you have a problem with refrigerant. Sealed units are warranted for 5 years. Defrost timer issues are best left to a tech.

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