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1 what can be done to treat steel piping to help keep it from rusting2 where should air vents be located in a hot-water
1 what are the two common mechanical-draft cooling tower arrangements2 how does an induced-draft cooling tower differ
1 what is an advantage of a crossflow tower as compared to a counterflow cooling tower2 what is a cooling tower plume3
1 list the three ways that evaporator temperature can be controlled2 what type of system would be used when the
1 what are three important items to consider in the design of commercial refrigeration systems2 refrigeration is
1 what should be done before refreezing a vegetable product2 what four operations are performed in a processing plant
1 describe the process of air-blast freezing2 how are products frozen in conduction-type freezers3 describe the
1 what factors must be considered when selecting a freezing system for a specific product2 how can freezer burn be
1 list the six categories of perishable foods2 what are the principal causes of spoilage in foods3 what is the most
1 what is meant by live-load chilling what are the determining factors for when to charge and when discharge from
1 what is meant by a stratified thermal water-storage tank2 what is meant by charging storage3 what is meant by
1 what are the advantages of thermal storage systems2 what common types of phase-change materials are used for thermal
1 what is meant by cooling range what is meant by the approach2 how is the heat load for a cooling tower calculated3
1 what type of heat is required to evaporate water2 where does the heat come from to evaporate water in a cooling
1 why do commercial refrigeration systems need a defrost system2 list the ways an evaporator can be defrosted3 what are
1 explain a method used to determine the correct operating discharge pressure of a commercial refrigeration system2
1 explain how to test whether a potential relay is defective using an ohmmeter2 explain how to test whether a capacitor
1 at what cylinder temperature will oil break down inside a compressor2 what should a technician do after changing out
1 what are the three major electrical defects that can cause a compressor not to operate2 what is the maximum voltage
1 which tool measures how much current a load is drawing2 explain the groups into which compressor problems can be
1 what could cause ice to build up in the ice bin2 list two things that might lead to a decrease in ice production3 why
1 what is the purpose of the auger seal on a flake ice machine2 list three safety devices used for flake ice machines3
1 how is crushed ice made why is flake ice ideally suited for any contact presentation such as displaying fish at the
1 list eight applications for commercial ice machines2 how much ice will a 12-oz drinking cup approximately hold3 about
1 how do open display cases maintain the temperature within the case without any doors2 the temperature is monitored in