In a chest type freezer, it is difficult to make direct contact with the evaporator for effective conductive cooling. Also, in a chest type freezer convection is less effective because the evaporator cannot be mounted above the freezer. The freezer section of the RFVB is isolated from the refrigerator compartment by three inches of polyurethane insulation. This feature prevents stored vaccines from being heated when warm water is placed in the freezer, a problem in refrigerators of conventional design. In addition to efficiency, the RFVB design offers convenience.
Stored vaccines are much more accessible than they are in chest models.
Health workers generally find the vertical design much more acceptable. Over the past 12 years they have been installed in over 50 developing countries and have held up under the harshest conditions. For critical applications, far from supporting infrastructure, from Borneo to Botswana, Sun Frost refrigerators have delivered consistently dependable performance day in and day out. Using that method, the RFVB has a 38.7 liter capacity. Starting Current 15 amps for 12 volt system, 7.5 amps for 24 volt system Wiring should be designed for 15 amp.