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Unit 29: Troubleshooting and Typical Operating Conditions for Commercial Refrigeration with Complete Solutions
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Unit 29: Troubleshooting and Typical Operating Conditions for Commercial Refrigeration with Complete SolutionsUnit 29: Troubleshooting and Typical Operating Conditions for Commercial Refrigeration with Complete SolutionsUnit 29: Troubleshooting and Typical Operating Conditions for Commercial Refrig...

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  • September 20, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • unit 29 troubleshooting and typical operating con
  • unit 29 troubleshooting and typical operating
  • the refrigerated cabinet temperature of a high tem

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  • Unit 29: Troubleshooting and Typical Operating
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Unit 29: Troubleshooting and
Typical Operating Conditions for
Commercial Refrigeration with
Complete Solutions
The refrigerated cabinet temperature of a high-temperature refrigeration unit
ranges from ____. - ANSWER - 45°F to 60°F


In a high-temperature refrigeration unit, the boiling point of the refrigerant in the
coil is normally ____ lower than the cabinet temperature. - ANSWER - 10°F to 20°F


Medium-temperature refrigerated cabinet temperatures range from ____. - ANSWER
- 30°F to 45°F


The process of ice making usually occurs in which temperature range? - ANSWER -
5°F to 20°F


Condensing units located outside that are required to operate year-round must have
____. - ANSWER - head pressure control


With the entering air to the condenser above 70°F, the temperature difference
between the outdoor air and the condensing temperature on standard units will be
____. - ANSWER - 25°F to 30°F


An air-cooled R-12 refrigeration system is operating normally with a suction pressure
of 25 psig and a head pressure of 136 psig. Which of the following represents a
possible set of operating pressures if the condenser fan motor burns out? - ANSWER
- high side 180 psig, low side 35 psig


In a wastewater system, the water entering the condenser is 85°F and the water
leaving the condenser is 105°F. Which of the following statements is a logical
explanation for the above conditions? - ANSWER - reduced water flow through the
condenser

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