What side is the orifice tube on an AC system?
What side is the orifice tube on an AC system?
A fixed orifice tube contains a small brass tube encased in a plastic case with a filter at each end to protect it from any debris in the system. It’s located on the high side between the condenser and the evaporator core.
How does the orifice tube work in an AC system?
Some car makers now use automotive AC orifice tube systems in their AC. An orifice tube is simply a refrigerant metering device to control the rate of flow of refrigerant into the evaporator located in your dash. In the illustration below, you’ll see that low pressure gas flows out of the evaporator coil and into the accumulator.
Where is the filter on a fixed orifice tube?
A fixed orifice tube contains a small brass tube incased in a plastic case with a filter at each end to protect it from any debris in the system. It’s located between the condenser and the evaporator core.
Why is my orifice tube not working properly?
If either the evaporator or the refrigerant hose coming from the evaporator are warm or hot to the touch, this could indicate that the orifice tube isn’t doing its job. However, there could be many other causes for this problem, as well.
What is a fixed orifice?
A fixed orifice tube is really a compromise between highway performance, stop and go, and idle performance. This is because at idle, the condenser has less air flow across its surface. This causes head pressures to increase, but also causes vaporized refrigerant leaving the condenser to enter the orifice tube.
Some car makers now use automotive AC orifice tube systems in their AC. An orifice tube is simply a refrigerant metering device to control the rate of flow of refrigerant into the evaporator located in your dash. In the illustration below, you’ll see that low pressure gas flows out of the evaporator coil and into the accumulator.
How do you replace the orifice tube in a car?
Replacing the orifice tube requires you to completely evacuate the AC system and disconnect the high pressure liquid line. It’s not a fun job. • Replacement orifice of the exact same color and part number as the old unit Buy or rent a refrigerant recovery machine. Attach the manifold gauge set to the high and low side ports on your car’s AC system
A fixed orifice tube contains a small brass tube incased in a plastic case with a filter at each end to protect it from any debris in the system. It’s located between the condenser and the evaporator core.
How do you remove the orifice tube in an evaporator?
Remove the orifice tube using needle nose pliers or removal tool. Note the orientation of the orifice tube. It must go back in the same way. Lubricate the O-rings on the new orifice tube with AC oil. Insert the new orifice tube into the evaporator or LLOT or SLOT.
