CFESA Refrigeration Chapter 24
What is different about servicing Hydrocarbon (HC) refrigeration systems? - answer
Refrigerant is flammable and potentially explosive.
The two most common Hydrocarbon refrigerants are? - answerR290B and R600B
Where must every replacement part for a Hydrocarbon refrigeration system
be purchased? - answer The OEM equipment manufacturer.
You can recover refrigerant with your recovery unit. True or- False - answer False
Every Hydrocarbon refrigeration compressor will have what markings on it? - answer
The refrigerant used and warning labels.
What is different about HC compressor starting components? - answer The all
electrically sealed to prevent any arcing.
How must HC refrigerants be removed from the refrigeration system? - answer Purged
from the system to a safe place outdoors.
Do hydrocarbon refrigerants need to be recovered? - answerThey do not. They are
exempt by the EPA.
What kind of leak detector is used to detect HC refrigerants? - answerHigh quality
combustible leak detector.
The HC leak detector only needs to be used when leak testing. Tor F - answerFalse It
needs to be on the entire time the system is opened until it has been
totally purged out, and whenever there is any refrigerant in the system!
If you suspect a problem in the sealed system how should you try to verify it
before opening the system? - answer11. By temperatures to ballpark superheat and
subcooling.
How do all brazed in components in a HC refrigeration systems need to be
removed? - answerCut out with tubing cutters
Before opening a HC sealed system after the refrigerant has been removed
you must? - answerPurge is for a minimum 5 minutes with nitrogen.
When brazing any component into a HC refrigeration system it is mandatory
that you do what? - answerNitrogen must be purging through the system.
What is different about servicing Hydrocarbon (HC) refrigeration systems? - answer
Refrigerant is flammable and potentially explosive.
The two most common Hydrocarbon refrigerants are? - answerR290B and R600B
Where must every replacement part for a Hydrocarbon refrigeration system
be purchased? - answer The OEM equipment manufacturer.
You can recover refrigerant with your recovery unit. True or- False - answer False
Every Hydrocarbon refrigeration compressor will have what markings on it? - answer
The refrigerant used and warning labels.
What is different about HC compressor starting components? - answer The all
electrically sealed to prevent any arcing.
How must HC refrigerants be removed from the refrigeration system? - answer Purged
from the system to a safe place outdoors.
Do hydrocarbon refrigerants need to be recovered? - answerThey do not. They are
exempt by the EPA.
What kind of leak detector is used to detect HC refrigerants? - answerHigh quality
combustible leak detector.
The HC leak detector only needs to be used when leak testing. Tor F - answerFalse It
needs to be on the entire time the system is opened until it has been
totally purged out, and whenever there is any refrigerant in the system!
If you suspect a problem in the sealed system how should you try to verify it
before opening the system? - answer11. By temperatures to ballpark superheat and
subcooling.
How do all brazed in components in a HC refrigeration systems need to be
removed? - answerCut out with tubing cutters
Before opening a HC sealed system after the refrigerant has been removed
you must? - answerPurge is for a minimum 5 minutes with nitrogen.
When brazing any component into a HC refrigeration system it is mandatory
that you do what? - answerNitrogen must be purging through the system.
