©SOPHIABENNET@2024-2025 Friday, August 23, 2024 10:49 AM
Seattle ROL Exam Study Guide with
Complete Solutions
Oil pressure switch - Answer✔️✔️-Protects the compressor from operation
too long with no or partial lubrication
Off cycle defrost - Answer✔️✔️-Is used on medium temperature systems for
defrost by the air in the cooler which will be above 32F.
Filter - dryer filter - Answer✔️✔️-removes dirt and moisture out of the
refrigerator.
Suction accumulator - Answer✔️✔️-prevents liquid refrigerant from
entering the compressor.
Receiver - Answer✔️✔️-Stores unused refrigerant that uses a metering
device that varies the refrigerant flow with the load.
DOT-39 Container Disposal - Answer✔️✔️-You must evacuate it and punch
a hole in a DOT-39 container before disposing of it.
Two types of defrost used with low-temperature fixtures - Answer✔️✔️-Hot
Gas and Electric.
By code, can a licensed Refrigeration Operating Engineer break into a
Freon System in Seattle? - Answer✔️✔️-No, they cannot break into a Freon
system in the City of Seattle.
1
, ©SOPHIABENNET@2024-2025 Friday, August 23, 2024 10:49 AM
High temperature refrigeration is between - Answer✔️✔️-45F to 60F
Medium temperature refrigeration is between - Answer✔️✔️-30F to 45F
Low temperature refrigeration is between - Answer✔️✔️--20F to 5F
The average coil to air temperature relationship of the evaporators is 15F
differences leaving air and boiling refrigeration temperature. - Answer✔️✔️-
HCFC are HydroChloroFlouroCarbons and contain - Answer✔️✔️-Contain
the elements, hydrogen, chlorine, fluorine, and carbon.
HFC are HydroFlouroCarbons and contain - Answer✔️✔️-Hydrogen,
fluorine, and carbons.
Ozone Depletion Potential - Answer✔️✔️-Is a measurement of CFC's and
HCFC's ability to destroy the ozone.
A white colored cylinder is used for - Answer✔️✔️-R-12.
A silver colored cylinder is used for - Answer✔️✔️-R-717.
On a gauge manifold the red hose is to be connected to - Answer✔️✔️-The
high side.
On a gauge manifold the blue hose is to be connected to - Answer✔️✔️-The
low side.
Volume of gas varies as pressure varies, but the temperature remains the
same. - Answer✔️✔️-Boyle's law
2
, ©SOPHIABENNET@2024-2025 Friday, August 23, 2024 10:49 AM
The total pressure of a confined mixture of gases is the sum of the
pressures of each of the gasses in the mixture. - Answer✔️✔️-Dalton's law
At a constant pressure, the volume of gas varies as to the absolute
temperature and at a constant volume, the pressure of a gas varies directly
with the absolute temperature. - Answer✔️✔️-Charles' law
A rupture disk is located - Answer✔️✔️-On the cooler of a chiller.
To test for leaks in an ammonia system - Answer✔️✔️-You can use a sulfur
candle and soap bubbles.
Before you dispose of a refrigeration container - Answer✔️✔️-You must
evacuate, puncture a hole in the container; break off the valve of a
refrigeration container.
All refrigerant technicians must be certified after - Answer✔️✔️-November
14, 1994.
The make up of R-717 is - Answer✔️✔️-Ammonia.
Heat required to make a change of state is called - Answer✔️✔️-Latent heat.
Heat that can be measured by a thermostat is called - Answer✔️✔️-Sensible
heat.
The valve located at the discharge side of the receiver is called -
Answer✔️✔️-The king valve.
3
Seattle ROL Exam Study Guide with
Complete Solutions
Oil pressure switch - Answer✔️✔️-Protects the compressor from operation
too long with no or partial lubrication
Off cycle defrost - Answer✔️✔️-Is used on medium temperature systems for
defrost by the air in the cooler which will be above 32F.
Filter - dryer filter - Answer✔️✔️-removes dirt and moisture out of the
refrigerator.
Suction accumulator - Answer✔️✔️-prevents liquid refrigerant from
entering the compressor.
Receiver - Answer✔️✔️-Stores unused refrigerant that uses a metering
device that varies the refrigerant flow with the load.
DOT-39 Container Disposal - Answer✔️✔️-You must evacuate it and punch
a hole in a DOT-39 container before disposing of it.
Two types of defrost used with low-temperature fixtures - Answer✔️✔️-Hot
Gas and Electric.
By code, can a licensed Refrigeration Operating Engineer break into a
Freon System in Seattle? - Answer✔️✔️-No, they cannot break into a Freon
system in the City of Seattle.
1
, ©SOPHIABENNET@2024-2025 Friday, August 23, 2024 10:49 AM
High temperature refrigeration is between - Answer✔️✔️-45F to 60F
Medium temperature refrigeration is between - Answer✔️✔️-30F to 45F
Low temperature refrigeration is between - Answer✔️✔️--20F to 5F
The average coil to air temperature relationship of the evaporators is 15F
differences leaving air and boiling refrigeration temperature. - Answer✔️✔️-
HCFC are HydroChloroFlouroCarbons and contain - Answer✔️✔️-Contain
the elements, hydrogen, chlorine, fluorine, and carbon.
HFC are HydroFlouroCarbons and contain - Answer✔️✔️-Hydrogen,
fluorine, and carbons.
Ozone Depletion Potential - Answer✔️✔️-Is a measurement of CFC's and
HCFC's ability to destroy the ozone.
A white colored cylinder is used for - Answer✔️✔️-R-12.
A silver colored cylinder is used for - Answer✔️✔️-R-717.
On a gauge manifold the red hose is to be connected to - Answer✔️✔️-The
high side.
On a gauge manifold the blue hose is to be connected to - Answer✔️✔️-The
low side.
Volume of gas varies as pressure varies, but the temperature remains the
same. - Answer✔️✔️-Boyle's law
2
, ©SOPHIABENNET@2024-2025 Friday, August 23, 2024 10:49 AM
The total pressure of a confined mixture of gases is the sum of the
pressures of each of the gasses in the mixture. - Answer✔️✔️-Dalton's law
At a constant pressure, the volume of gas varies as to the absolute
temperature and at a constant volume, the pressure of a gas varies directly
with the absolute temperature. - Answer✔️✔️-Charles' law
A rupture disk is located - Answer✔️✔️-On the cooler of a chiller.
To test for leaks in an ammonia system - Answer✔️✔️-You can use a sulfur
candle and soap bubbles.
Before you dispose of a refrigeration container - Answer✔️✔️-You must
evacuate, puncture a hole in the container; break off the valve of a
refrigeration container.
All refrigerant technicians must be certified after - Answer✔️✔️-November
14, 1994.
The make up of R-717 is - Answer✔️✔️-Ammonia.
Heat required to make a change of state is called - Answer✔️✔️-Latent heat.
Heat that can be measured by a thermostat is called - Answer✔️✔️-Sensible
heat.
The valve located at the discharge side of the receiver is called -
Answer✔️✔️-The king valve.
3
