Sharp R-880S Betreibershandbuch PDF herunterladen (Seite 99)

Glossary

CFC: Chlorofluorocarbon. A chlorine-based refrigerant

consisting of chlorine, fluorine and carbon. Example: R12. In

many countries it is illegal to release this type of refrigerant to

the atmosphere because chlorine damages the earth’s

atmosphere. CFC refrigerants are not used in modern Thermo

King units.

circuit breaker: A thermal device that automatically

interrupts an electrical circuit when the current in the circuit

exceeds the predetermined amperage rating of the breaker. See

amp.

coil: A cooling or heating element made of pipe or tube,

formed into a helical or serpentine shape, that may be equipped

with thin metal fins to aid heat transfer.

cold curtains: Flexible vinyl curtains used to reduce air

exchange between the refrigerated compartment and the

outside during door openings.

compound gauge: A gauge calibrated in psig (or kPa) to

measure pressure, and in inches of mercury (Kg/cm2) to

measure vacuum.

compressor: The refrigeration component that compresses

refrigerant vapor and creates refrigerant flow.

condenser: An arrangement of tubing in which the

vaporized and compressed refrigerant is liquefied as heat is

removed.

cycles per second: See Hertz.

damper door: A door on the evaporator section that closes

during defrost to prevent hot air from entering the refrigerated

cargo compartment.

data logger: An electronic device that monitors and stores

unit operating and temperature data for later review. Examples:

DMS, DAS, DRS and AccuTrac.

defrost: The removal of accumulated ice from an evaporator

coil. Periodic defrost is necessary when the evaporator coil is

operating below freezing. Defrost is required more frequently

when the air passing through the evaporator has a high

moisture content.

defrost termination switch: A component that terminates

defrost operation at a specific temperature.

defrost timer: A solid state module that initiates defrost at

selected intervals. Also establishes a maximum defrost

duration if normal circuits malfunction.

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Sharp R-880S Betreibershandbuch Seite 99