modern refrigeration chapter 52 wb questions and a
modern refrigeration chapter 52 wb stuvia
a slip hazard is most likely to result from a
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Modern Refrigeration Chapter 52
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A slip hazard is most likely to result from a __________ Joint that has not been
properly sealed. - ANSWER - Condensate line
True or false. Due to the labor involved it is more time-consuming to install a split
system than a package system. - ANSWER - True
Two important principles of installation that help to minimize hazards are durability
and - ANSWER - Neatness
When installing a new commercial system, a standing pressure test involves
pressurizing the system with _________ and letting it stand for 24 hours. - ANSWER -
Nitrogen
Standards for wiring and electrical equipment are most often covered by - ANSWER
- NEC National electrical code
Standards for water and other non-refrigerant piping are often covered by - ANSWER
- The IPC International plumbing code
Most codes require that installation of commercial refrigeration equipment to be
done by - ANSWER - Licensed refrigeration contractors
For each commercial refrigeration installation, a ___________ Must be obtained. -
ANSWER - Permit
For commercial refrigeration systems, electrical work must conform to code and be
done by a (n) - ANSWER - Licensed electrician
, For commercial refrigeration system, plumbing work must conform to code and be
done by a(n) - ANSWER - Licensed Plumber
Commercial refrigeration systems must be tested under pressure on the _________
and be free of leaks. - ANSWER - High side and the low side
For a large, split commercial refrigeration system, a condensing unit should be
_______ the conditioned space. - ANSWER - As close as possible to
If a condensing unit is placed indoors, the room must be _________ - ANSWER - Well
ventilated
A condensing unit should be installed indoors and ________ . - ANSWER - None of the
above answers.
True or False. A high ambient temperature causes a condensing unit to operate less
efficiently. - ANSWER - True
The safety device that is designed to actuate in the case of a fire is a ______. -
ANSWER - Fusible plug
The safety devise that is used to stop the compressor when excessively high head
pressure developed is a - ANSWER - Spring loaded relief valve
The safety device that is used to vent refrigerant only until high pressure is reduced
is a - ANSWER - Pressure control
On a multiple-evaporator refrigeration system, a _______ should be included in each
liquid line leading to each TXV. - ANSWER - Solenoid valve
The position of a TXV's sensing bulb on a suction line depends on the ________. -
ANSWER - Tubing size
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