Standard Vacuum Pump Designed Specifically For Evacuation And Dehydration Can

Question: When transporting refrigerants, DOT regulation number 49 CFR requires______ to be recorded on the shopping papers for hazard class 2.2 , nonflammable compressed gases?

Answer: Number of cylinders of each gas

Question: What can cause excessive pressure on the high side of an active -container recovery device

Answer: A closed recovery tank inlet valve, excessive air or other non-condesables in the recovery tank

Question: When using a graduated charging cylinder, any refrigerant that is vented from the charging cylinder must be?

Answer: recovered

Question: A recovery cylinder which is half full of recovered R-500 at normal room temp(about 75F) , in the absence of non- condensables , will be pressurized to :

Answer: 95 PSIg

Question: A recovery cylinder which is half full of recovered R-410A at 90 degrees F , in the absence of non-condensables, will be pressurized to

Answer: 300 psig.

Question: When recovering refrigerant from a household refrigerator who’s compressor does not run, it is recommended that low and high side access valves be installed becuase _______

Answer: It can enhance the speed of recovery, necessary achieve recovery efficiency

Question: A recovery cylinder which is half full of recovered R -12 at a normal room temp (about 75F) , in the absence of non - condensables, will be pressurized to :

Answer: 75 psig

Question: A standard vacuum pump designed specifically for evacuation and dehydration can:

Answer: be only used as a recovery device in combination with a non pressurized container

Question: According to the EPA which recovery equipment maintenance practice(s) should be preformed on a regular basis?

Answer: check recovery device for refrigerant leaks

Question: A standard vacuum pump designed specifically for evacuation and dehydration can:

Answer: never be used as a recovery device in combination with a pressurized container