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