Download PASSEMALL Prep app now
or get instant
to install app
Stratosphere layer consists of about 90% of ozone, which protects earth from the sun’s harmful UV radiation.
Your email address will not be published. Required fields are marked *
Save my name, email, and website in this browser for the next time I comment.
Disposable cylinders are used only for which of the following refrigerants?
Class II refrigerants have ozone depletion potential (ODP) of less than _____.
Refrigerant in Discharge Line will be in which of the following phases?
Under the EPA’s “safe disposal requirement”, who is responsible for making sure that the refrigerant has been removed from household refrigerators before they are disposed of?
the final person in the disposal chain.
The warmer the temperature of the refrigeration system, the slower it will evacuate.
Only CFCs and HCFCs refrigerants are to be mandatorily recovered.
Never use oxygen or compressed air to pressurize a system because _____.
when mixed with compressor oil or some refrigerants, it could explode.
After 1995, supplies of CFC refrigerants used to service existing refrigeration appliances in the United States can only come from _______.
recovery and recycling.
The type of oil that is most commonly used in stationary refrigeration applications with HFC-134a refrigerant is ______.
Refrigerant vapors or mist should not be inhaled because _____.
they may cause heart irregularities and/or unconsciousness.
It is illegal to _____.
knowingly release any refrigerant during the service maintenance, repair or disposal of appliances with the exception of de minimis releases.