How do I know if the refrigerant filter drier is bad?
Bad A/C receiver drier symptoms
- Unusual noises.
- Leakage.
- Bad odour.
- Ineffective cooling.
- Cloudy sight glass.
Can you oversize a filter drier?
It should be sized to the line size and the flow capacity of the system. As Krause notes, you can only flow so much through a 3/8-in. Consequently, an oversized filter-drier can also be a problem, especially on a critically charged system. That’s because each drier has a capacity to hold refrigerant, says Krause.
When should I replace my refrigerant filter drier?
All filter driers should be replaced every 2 years or by manufacturer’s recommendation. The Receiver Drier’s function in an automotive a/c system is to filter foreign material, remove moisture from refrigerant and to act as a reservoir to supply liquid refrigerant to the TX valve.
How do I choose a filter drier?
To select a suitable drier for a specific system, first consider the pipe diameter of the liquid line. As there are usually several filter sizes available for a given connection diameter, the drying capacity is also a good selection criterion.
What is a common symptom of a severely restricted filter drier?
A starved evaporator from the liquid line (filter drier) restriction will cause high superheats. High compression ratios from the low evaporator pressure will cause high heat of compression, thus high discharge temperatures. This is assuming there’s still some mass flow rate of refrigerant through the system.
Is a liquid line filter drier necessary?
A drier as its name imply is used to remove the moisture from the refrigerant. Sometimes it is also referred to as dehydrator or dryer. It is necessary to remove moisture from the system otherwise it may freeze inside the tube causing the flow of refrigerant to be restricted.