Question 1

The air-cooled Scotsman cube-type ice maker operates much more quietly than the water-cooled version.

Accepted Answer

Water-cooled ice makers generally operate more quietly than air-cooled models because they don't rely on fans for cooling, which can generate more noise.

Question 2

A ____ senses the level of ice in the storage bin and normally controls the operation of the ice maker.&#10;A) bin thermostat&#10;B) centrifugal switch&#10;C) master switch&#10;D) contactor coil

Accepted Answer

A bin thermostat senses the level of ice in the storage bin and controls the operation of the ice maker accordingly. A centrifugal switch is found in motors and switches off the motor when it reaches a certain speed. A master switch is a general term for a switch that controls the power supply to a device or system. A contactor coil is an electromagnetic coil that controls the opening and closing of electrical contacts. None of these options fulfill the given description of sensing ice levels in a storage bin.

Question 3

A nylobraid tube carries the ice to the ice storage bin.

Accepted Answer

A nylobraid tube is often used in commercial ice machines to carry the ice from the evaporator to the storage bin.

Question 4

Flaker-type ice makers harvest ice cubes at certain intervals.

Accepted Answer

Flaker-type ice makers do not make ice cubes, they produce small, flat flakes of ice continuously. Therefore, there is no need for intervals to harvest ice cubes.

Question 5

A ____ disconnects power to the entire control circuit.&#10;A) master switch&#10;B) centrifugal switch&#10;C) finish relay&#10;D) potential start relay

Accepted Answer

A master switch is designed to disconnect power to the entire control circuit, making it the best choice for this question. While centrifugal switches, finish relays, and potential start relays may be components of a control circuit, they do not necessarily disconnect power to the entire circuit.

Question 6

In the flaker-type ice maker, the auger drive motor contains two separate ____, one normally closed and the other normally open.&#10;A) master switches&#10;B) centrifugal switches&#10;C) spout switches&#10;D) pressure controls

Accepted Answer

The two switches in the auger drive motor of a flaker-type ice maker are a normally closed centrifugal switch and a normally open centrifugal switch.

Question 7

The commercial ice cube maker circuit contains a fan motor controlled by a ____ that senses the pressure on the high side of the compressor.&#10;A) master switch&#10;B) compressor switch&#10;C) pressure switch&#10;D) centrifugal switch

Accepted Answer

The pressure switch senses the pressure on the high side of the compressor and controls the fan motor accordingly. The other options (master switch, compressor switch, centrifugal switch) do not specifically relate to sensing pressure on the high side of the compressor.

Question 8

Continuous circulation of water produces a clearer ice.

Accepted Answer

Continuous circulation of water helps to prevent bubbles and impurities from settling in one spot and allows for a more even freezing process, resulting in a clearer ice.

Question 9

The auger delay pressure control switch is connected in the high side of the refrigeration system.

Accepted Answer

The auger delay pressure control switch is typically connected in the low side of the refrigeration system to control the compressor based on low-side pressure conditions.

Question 10

With a commercial ice cube maker, a ____ opens and permits fresh water to flow into the sump during the harvest cycle.&#10;A) hot-gas solenoid valve&#10;B) low water pressure control&#10;C) master switch&#10;D) water solenoid valve

Accepted Answer

The water solenoid valve is responsible for allowing fresh water to flow into the sump during the harvest cycle in a commercial ice cube maker. The other options (hot-gas solenoid valve, low water pressure control, and master switch) do not perform this function.

Deck 46: Commercial Ice Makers