How do you remove the doors on the master built 3 door Freezer with serial #51688

The alarm and the temperature senor are both broken and need to be replaced for your freezer.

Replacement thermostats depends on whether the fridge is a double door or single door model. You can buy this part from your appliance parts store/supplier.

Hi - Modern freezers have increased storage capacity and keep more even temperature that may require the compressors to run longer but use less energy. Was the unit disconnected previously for any reason? If so, freezer requires a minimum of 4 hours to cold down completely. Confirm that the temperature control is not set too cold and that the door is not being open frequently. A dirty, cracked, worn or poorly fitted door gasket can allow warm air to enter the unit causing it to have to run longer to remove the warm air. Leaks in the door seal will cause freezer to run longer in order to maintain desired temperature. Cleaned the gasket, if it is too damage then it will need to be replace. You can check and see if the door seal is bad by, placing a dollar between the gasket and cabinet. Check to see if the door is being blocked by anything stopping it from closing properly. If nothing is stopping the door then replace gasket. Keep in mind that there should also be at least 4-6 in of air space on all sides of the unit. If freezer is built in or has items stored on top that cover the unit, the can cause long run times, high temperature in the freezer and premature failure to the unit. Do not block the toe grille on the lower front of the unit. Sufficient air circulation is essential for the properly operation of your freezer, about 3 inches around the unit.

Hi Edward - Modern freezers have increased storage capacity and keep more even temperature that may require the compressors to run longer but use less energy. Was the unit disconnected previously for any reason? If so, freezer requires a minimum of 4 hours to cold down completely. Confirm that the temperature control is not set too cold and that the door is not being open frequently. A dirty, cracked, worn or poorly fitted door gasket can allow warm air to enter the unit causing it to have to run longer to remove the warm air. Leaks in the door seal will cause freezer to run longer in order to maintain desired temperature. Cleaned the gasket, if it is too damage then it will need to be replace. You can check and see if the door seal is bad by, placing a dollar between the gasket and cabinet. Check to see if the door is being blocked by anything stopping it from closing properly. If nothing is stopping the door then replace gasket. Keep in mind that there should also be at least 4-6 in of air space on all sides of the unit. If freezer is built in or has items stored on top that cover the unit, the can cause long run times, high temperature in the freezer and premature failure to the unit. Do not block the toe grille on the lower front of the unit. Sufficient air circulation is essential for the properly operation of your freezer, about 3 inches around the unit.

You need to replace the door gasket. It's leaking air causing the frost.

http://www.master-bilt.com/comdir/direct.htm
go to this site. It has info that you can contact them and just give them your model and serial and they can tell you. It's just that easy.
Hope it helps.

Call Rick at Restaurant Parts and More in Ohio. Give him the model and serial numbers and he can match what you need. FYI, most Turbo Air freezers are also Masterbilt. Turbo Air does the private lable thing for Master bilt.

Hope this helps.

you probably have an air leak. if the gasket is bad it needs to be replaced. Air could also be coming in through the door flap if you have water and ice dispensor on door

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.

If the door was left ajar for any extended period frost has built up on the cooling coils. A complete defrost of the freezer should take care of the problem. Normally a frost free system will clear the ice from the cooling coil when the defrost time cycle happens. However frost may have built up in areas where the heaters can not readily remove it in a normal defrost cycle and shutting the unit down with the door open for about 24 hours should clear it out.