A pressure of 100 microns has been reached with the vacuum pump operating. The pump is turned off and the gauge reading rises above 5,000 microns and keeps rising. What does this indicate?

When using recovery and recycling equipment manufactured after Nov 15,1993, technicians must evacuate an appliance component containing more than 200 lbs of CFC-12 to the following level before making a major repair:

When removing oil from a low pressure system, the temperature should be 130 degrees F because;;

Why is it a good idea to remove Schrader stems from service valves prior to evacuation?

Which of the following is true regarding refrigerant leaks on small appliances?

Type I Certification is required for;

The sale of CFC and HCFC refrigerant is ;

System-dependent or passive recovery equipment;

A small appliance is defined by EPA as;

Hydrochlorofluorocarbons (HCFC) refrigerants contain: