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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
1 do enclosed display cases use more or less energy than open cases2 how does a series heat-reclaim system operate3
1 how is a distributed system arranged in a supermarket2 what is the advantage to variable-frequency drive motors3
1 explain how an adaptive defrost cycle operates2 what is the advantage of a case coil secondary-loop system3 what
1 what type of pressure control can be used for rooftop aircooled condensers2 how does a pulse-width modulated
1 what is the most common type of system used in traditional supermarkets2 how many compressors are typically found on
1 when locating an air-cooled condenser outdoors why must the system be modified2 list at least three requirements when
1 what are the four separate loads used to calculate the heat load for walk-in coolers or freezers2 what is the first