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Recovery and evacuation
System Charging
Evaporators
Condensers
Specialty Components
100
Removing the refrigerant and storing it in a container
What is Recovery
100
When charging a system that is under vacuum, the inital charge of or refrigerant or nitrogen goes in
What is the path of the refrigerant flow
100
On a medium temp case, the evaporator fans run
What is all the time
100
What must be done in areas that the outdoor ambient temp drops below 60 to 70 degrees
What is control a minimum head pressure
100
Can be used to store the refrigerant in during service so a recovery does not have to be done
What is a Receiver
200
Removing the refrigerant and running it thru multiple driers and oil seperators
What is Recycling
200
In the direction indicated
What is what position should the supply tank be placed in for liquid
200
Hot gas and electric
What is methods of defrost for a low temp case
200
the minimum pressure drop required across the metering device
What is seventy five degrees
200
Maintains a fixed pressure in the evaporator, thus controlling evaporator temp.
What is an EPR
300
the used refrigerant is cleaned, tested and labeled as new and can be resold as new.
What is Reclaiming
300
the act of refrigerants separating into their original components due to different boiling/condensing points
What is fractionation
300
Terminates defrost and delays the fans from coming on until the evaporator drops below 28 degrees
What is defrost termination switch
300
method of head pressure control by cycling the condenser fan
What is fan cycling
300
Used to prevent "flooded starts" due to migration
What is a continuous pump-down cycle
400
is the last thing to boil off from the refrigeration oil
What is moisture
400
must be done when hooking up gauges to prevent system contamination
What is purging the lines or hoses
400
is used to compensate for a large pressure drop or multiple circuit evaporators
What is External equalizer
400
method of head pressure control by backing up liquid into the condenser
What is condenser flooding
400
regulates the amp draw of the compressor under "Hot Pull-Downs"
What is a CPR
500
Is the first thing to come out of a system during evacuation after the initial recovery
What is non-condensables
500
Acts like a pure refrigerant and has only one boiling/condensing point
What is azeotropes
500
a type of evaporator that does not use fans
What is a gravity coil, or convection evaporator
500
On large systems the use condenser flooding, what is the "type" of receiver that is used
What is a surge reciever
500
Prevents liquid from entering the compressor during a "Hot-gas Defrost"
What is a Suction Accumulator