Yes
There are severe inhalation hazards.
old refrigerant is a gas and needs to be pumped out or removed via vacuum with the proper machine which deposits it into the same type of tank that new refrigerant is contained in because of pressure. evacuating refrigerant into the air is dangerous and if inhaled is poisonous to people. not to mention illegal if in California. You could try one of those conversion kits from r12 to r134 hooking up the hoses may allow refrigerant to flow into an empty refrigerant btl.
The Refrigerant enters the condenser as a high pressured gas, the condenser then condenses that gas and changes it to a liquid form.
To endure that the ONLY gas in the system is refrigerant.
Refrigerant gas. Not natural or propane gas.
Yes, carbon monoxide is a poisonous and very dangerous gas.
The refrigerant itself acts as the medium that carries the gas to the sensor in a halide leak detector. When the refrigerant comes into contact with the halide gas, it picks up traces of the gas and carries them to the sensor for detection.
Poison gas is any of the various gases with either poisonous or corrosive nature
superheat gas
R134a is a refrigerant gas
no