Which way does the filter drier flow?

Point the arrow in the correct direction. Suction driers point towards the compressor and away from the evaporator. Liquid line driers point toward the metering device and away from the condenser. A liquid line drier goes in the liquid line, NOT in the discharge line.

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What happens if you put a filter drier backwards?

When installing a new filter drier, an arrow on the filter drier’s housing will indicate which direction refrigerant is designed to flow. If installed backwards, the filter drier will become useless.

How does a HVAC filter drier work?

Filter driers are exactly what they sound like, they are filters. They filter the refrigerant inside the ac system. Filter driers need to be able to trap and contain moisture, acid, contaminants and wax from circulating throughout the air conditioner.

Where do you put a suction line filter drier?

Suction Line Filter-Driers and Suction Filters should be installed as close to the compressor as possible. If a suction vibration eliminator is used, the drier or filter should be installed upstream of it. Suction Line Filter-Driers and Suction Filters may be installed either in a horizontal or vertical position.

Are filter driers directional?

When installed in these locations, the flow through each drier is always in the same direction, see Figure 2. Standard filter-driers will not tolerate flow in the reverse direction. Reverse flow washes out the dirt previously collected and also tends to result in a high-pressure drop.

What are the symptoms of a partially blocked filter drier?

The symptoms for a partially plugged filter drier include:

Higher-than-normal discharge temperature;
High superheats;
Low evaporator pressure;
Low condensing pressure;
Normal-to-a-bit-high condenser subcooling;
Low condenser splits;
Local cold spot or frost after the restriction;
Low amp draw; and.

When should a suction line drier be used?

These suction line filter-driers include protection from moisture and organic or inorganic acids, resulting from burnouts, or chemical changes in the system refrigerant or oil. They’re especially suited for system cleanup after a burnout, or when major work has been performed on the system.

Should suction line drier be removed?

Any pressure loss in the suction line also reduces system capacity significantly. When an RSF shell or replaceable core type Catch-All is used, it is recommended that the cores be removed and filter elements installed when the clean-up job is complete.

Can you have two filter driers?

The installation of two standard driers is usually easier if both are installed in the outdoor section. One drier is installed directly ahead of the expansion valve in the outdoor coil, and the other drier is installed directly ahead of the check valve that leads to the expansion valve on the indoor coil.

What is the function of a filter dryer?

A filter-drier in a refrigeration or air conditioning system has two essential functions: one, to adsorb system contaminants, such as water, which can create acids, and two, to provide physical filtration. Evaluation of each factor is necessary to ensure proper and economical drier design. Absorbing moisture, preventing acids

How do I know what direction my filter drier is running?

On the side of the filter drier you’ll find an arrow, this indicates the direction of refrigerant flow. Some models for heat pumps might have a bi-directional filter and the arrow will point both left and right. But in this case we have a single direction, one way filter drier.

What is the difference between line filter drier and liquid line filter-drier?

THE CONSTRUCTION OF THE SUCTION LINE FILTER-DRIER is not significantly different from the standard liquid line filter- drier. Both driers remove the important contaminants such as moisture, dirt, acid, and the products of lubricant decomposition.

What are the two types of filtration in a dryer?

Some driers use only one method; others may use a combination of methods. There are two primary means of mechanical filtration: surface and depth. The simplest form of surface filtration is the screen. The screen is usually a woven wire mesh that catches particles that are larger than the holes in the screen.