If I change the AC compressor in a car, do I have to change the orifice?
To change the compressor on a system containing R-410A you must isolate the compressor then?
Yes, That is a must do.
Short &j Simple, the A/C orifice tube must be replaced ( if one is changing out the A/C compressor) in order to comply ( FACTORY EXTORTION ) with warranty requirements. Note: The Accumulator must also be replaced. The accumulator is not that hard to find, however the orifice tube is a small device, approx. !/4" OAD X 4" long. Where is this orifice device located in A/C system.
You need to BCLear. Why did you replace it? Different reasons need different procedures.
More than likely the metal is coming from the compressor. Replace the compressor along with the accumulator/receiver dryer and orifice tube/expansion valve. It is difficult to flush all of the metal out of the system but you must try. Any metal left in the system will eventually destroy the new compressor.
It is made into the high pressure line about midway where it runs along the passenger side fender. If replacing, you must replace the whole line.
You may have to replace the entire compressor. Either way, it'll involve disconnecting and dismounting the compressor, and you legally cannot do this on your own. It must be an ASE certified tech who does this, and the shop which does the work must be EPA certified and have approved equipment, as they must evacuate refrigerant out of the system and prevent its release into the air. When the air conditioning system is opened up like that, the receiver-drier (if it's a thermal expansion valve system) or accumulator (if it's a fixed orifice tube system) will also have to be replaced.
YES that is a must.
By law, this must be done by an ASE certified tech in a EPA certified shop. This operation requires evacuation of the refrigerant in a manner which prevents its release into the atmosphere, and storage. Additionally, when the compressor is disconnected, it opens up the AC system. This means that the receiver-drier (if it's a Thermal Expansion Valve system) or accumulator (if it's a Fixed Orifice Tube system) must also be replaced.
Doesn't matter - if you open up the compressor, you open up the AC system. By law, this must be done by an ASE certified technician in an EPA approved shop with the proper equipment to evacuate and store the refrigerant. This prevents refrigerant from being released into the atmosphere. Whenever the AC system is opened up, the receiver-drier (if it's a Thermal Expansion Valve system) or accumulator (if it's a Fixed Orifice Tube system) must also be replaced.
By law, this must be done by an ASE certified technician in an EPA certified shop. The refrigerant must be recovered and stored in a manner which does not allow it to escape into the atmosphere. Additionally, when the compressor is removed, it will open up the AC system to ambient air and moisture; this will require that the receiver-drier (if it's a Thermal Expansion Valve system) or accumulator (if it's a Fixed Orifice Tube system) be replaced, as well.
If you'll pick up a Haynes or Chilton manual for your car, you will find everything you need to know about service and maintenance. Haynes is very clear about the need to have a certified AC technician do anything involving purging the refrigerant. This must be done prior to replacing the compressor. FriPilot