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Package ice machines store their own ice at ____ºF in a bin below the ice maker.
a. | 10 | b. | 18 | |
c. | 24 | d. | 32 |
D 32
Most ice flakers have a ____ that reduces the auger drive motor’s speed from about 1725 rpm to 9 to 16 rpm.
a. | gear improvement drive | b. | gear intensive drive | |
c. | gear shift drive | d. | gear reduction drive |
gear reduction drive
For maximum efficiency, individual ice machine models have different programs called algorithms stored in their ____.
a. EEPROM b. ERAM
c. EPRAM d. PRAM
a. | EEPROM |
Ice-making machines are the same as ice-holding machines such as those seen on the outside of a convenience store or service station.
a. True
b. False
FALSE
Solid forms of ice last longer because there is more weight with less surface area.
a. True
b. False
TRUE
Most package ice makers are ____-cooled.
a. | water | b. | air | |
c. | moisture | d. | refrigerant |
B AIR
____ evaporators have ice cups designed to cause the ice to fall out of the cups during defrost.
a. | Vertical | b. | Horizontal | |
c. | Hybrid | d. | Linear |
A. VERTICAL
Microprocessors are often referred to as ____.
a. | signal controllers | |
b. | digital controllers |
integrated device controllers |
integrated circuit controllers |
d. integrated circuit controllers
The gear motor assembly is less prone to failure than any other part in the ice flaker.
a. True
b. False
FALSE
Most ice makers use a hot gas harvest or defrost to melt an ice sheet off the evaporator.
a. True
b. False
TRUE
____ ice is normally made in a vertical refrigerated cylinder surrounded by the evaporator on the outside.
a. | Solid | b. | Cube | |
c. | Flake | d. | Chip |
C
____ ice cube machines usually have vertical evaporator plates with water flowing over the individual cells.
a. | Modular | b. | Linear | |
c. | Cell-type | d. | Cup-type |
C. CELL TYPE
Many filter manufacturers use ____ to inhibit calcium or lime scale buildup.
a. | wool | b. | polysorbate | |
c. | polyphosphate | d. | polyphenols |
c. polyphosphate
Manufacturers of ice flakers install thermal overload controls in the motor windings or a manual-reset, current-type overload control.
a. True
b. False
TRUE
Ice is not considered a food source.
a. | True | |
b. | False |
FALSE
The auger in a flake ice maker has cutting surfaces called ____.
a. | flights | b. | fins | |
c. | shafts | d. | gears |
A FLIGHTS
____ between the evaporator cells allow air entering from the edges of the ice to travel along the entire ice slab and relieve the suction force.
a. | Space holes | b. | Weep holes | |
c. | Release spots | d. | Weep space |
B. Weep holes
Most package ice machines are designed to be located in ambient temperatures of ____.
a. 30ºF to 110ºF b. 40ºF to 115ºF
c. 50ºF to 115ºF d. 50ºF to 120ºF
b. 40ºF to 115ºF
It is important that the auger does not wobble within the freezing cylinder or evaporator
a. True
b. False
TRUE
It is recommended that at least ____________________ a year, the probe should be removed from the water reservoir and cleaned.
twice |
5. A ____ is used to turn the auger in a flake ice machine.
a. | step motor | b. | geared motor | |
c. | worm motor | d. | hydraulic motor |
B GEARED MOTOR
___ are simply small computers that contain stored programs or algorithms.
a. | Auto processors | b. | Signal processors | |
c. | Microcontrollers | d. | Microprocessors |
d. | Microprocessors |
When using cleaning and sanitizing chemicals, it is unnecessary to wear protective clothing and eyewear.
a. True
b. False
FALSE
Water levels can be sensed and controlled by a probe located in the water reservoir.
a. True
b. False
TRUE
The ____________________ is usually made of two reed switches and two floats.
dual float switch