Which way does the arrow point on an orifice tube?
Which way does the arrow point on an orifice tube?
The orifice tube does the same function as the accumulator. It makes the refrigerant expand, thereby lowering its pressure before it enters the evaporator. There will be an arrow located on it and that is the flow of the refrigerant, in this case going down.
Which direction will refrigerant flow through the orifice tube?
The refrigerant flow is restricted by a metered orifice through which it must pass. As the refrigerant passes through this orifice, it changes from a high-pressure liquid to a low-pressure liquid (or passes from the high side to the low side of the system).
Is high side liquid or gas?
When it exits the condenser, it is in liquid form and is still warm (liquid line), and still under high pressure (high side).
Where is the orifice tube in an evaporator?
When the orifice tube is built into the line, it’s referred to as a Liquid Line Orifice Tube (LLOT) or a Suction and Liquid Line with Orifice Tube (SLOT). The orifice tube may be located: In the inlet tube to the evaporator. Built into the high pressure liquid line.
Where is the orifice tube in an AC accumulator system?
Generally, the orifice tube is placed between the condenser and evaporator as shown in the picture below: AC accumulator orifice tube systems are found in some automobiles while other vehicles include an expansion valve in place of the orifice tube and a receiver-drier instead of the accumulator.
What causes the orifice tube to become clogged?
It’s usually easy to locate, because many manufacturers crimp the line that holds the orifice, preventing it from traveling down the tube towards the evaporator core. The orifice tube can become restricted and clogged with debris.
Where is the orifice tube located in a high pressure line?
Sometimes it is built into the liquid or high pressure line or inserted into the high pressure line right where the line connects to the condenser. When the orifice tube is built into the line, it’s referred to as a Liquid Line Orifice Tube (LLOT) or a Suction and Liquid Line with Orifice Tube (SLOT). The orifice tube may be located:
What does an orifice tube do in an A / C system?
This freezing restricts airflow through the coils and eventually results in a loss of cooling for the vehicle. The evaporator and refrigerant lines should be cold to the touch when running properly, but they should not be frozen. If freezing does occur, it may indicate a problem with the orifice tube, or even too much refrigerant in the system.
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.
Why do you need an orifice for r-134?
The orifice tube allows for a higher flow of R-134 refrigerant during times when more cooling is needed, and a smaller flow of refrigerant when less cooling is needed.
Do you need to replace the orifice tube in a compressor?
If it was full of metal shavings you have bigger fish to fry. Your compressor is going. You not only need to replace the orifice tube, but the compressor, condenser, accumulator and flush all the lines.
