The model 928R is accessible and the filter can be replaced when necessary. The “R” is for reservoir. The built-in reservoir reduces piping, components, and potential leaks and creates a stable, high pressure oil system. Because the oil reservoir is built-in, the 928R separator does not have a float. The Temprite 928R oil separator is designed to remove oil from the refrigeration system and return it to the compressor, resulting in shorter compressor run times, reduced energy consumption and the highest possible return on investment. The main purpose of the oil is to lubricate the compressor. When oil circulates instead, it builds up a film on the internal surfaces of heat exchangers and acts as an insulator. This robs the system of efficiency and raises energy consumption. Coalescing separators are capable of removing 95% to 99% of the oil component of mass flow. The glass fiber filter material is capable of exciting the smallest oil molecules. The fiber material forces the molecules to collide and form larger droplets which fall to the bottom of the separator to drain back to the compressor.
The Model 928R is primarily used in larger commercial refrigeration applications that utilize traditional refrigerants. Like the rest of the 920 and 920R series, it has a replaceable filter with easy top access.