Filter Driers clean refrigerant in one pass.

Press Release Summary:



Dual in-line One-Pass Filter Driers provide 35 column in. of desiccant that is able to clean and dehydrate refrigerant on single pass to very near ARI-700 specifications. Installing filter on inlet side of purge tank helps protect purge tank from corrosion and acid build-up, helps prevent corrosion build-up on purge tank heat transfer coils, and helps remove acid and moisture from chiller's refrigerant.



Original Press Release:


New Redi Controls Patented Dual In-Line "One-Pass" Filter Driers


In a typical refrigeration circuit the refrigerant continuously re-circulates through the filter-drier (standard core type). Therefore, even though the refrigerant is actually only passing through about an inch of core media, it does so over and over again. However, this is not so in the case of the purge unit. The foul gas passing from the chiller to the purge unit has only one shot at removing moisture and acid as it passes through the filter-drier. A standard filter-drier cannot absorb all of the moisture and acids on a single pass through just an inch of core media.

The NEW Redi Controls Patented Dual In-Line "One-Pass" Filter Driers solves this problem by providing 35 column inches (dual in-line filter-drier arrangement) of specially blended desiccant. This extra long column of desiccant is able to clean and dehydrate the refrigerant on a single pass to very near ARI-700 Specifications. Check and replace filters as needed during servicing in order to optimize chiller efficiency.

Important Reminder:
When servicing your chiller, be sure to check the purge unit's foul gas pick-up line "One- Pass" Filter Drier Set. If the moisture indicator indicates wet refrigerant its time to replace them.

If your Redi Controls Purge Unit (Models PRG-1 1/123-C, PRG-1 13-C, PRG-1 1/123-C2 & PRG- 11 3-C2) does not already have the Dual In-Line "One- Pass" Filter Drier system installed, now is a good time to upgrade.

Why the Redi Controls "One-Pass" Filter Drier System?
In a typical refrigeration circuit the refrigerant continuously re-circulates through the filter-drier (standard core type). Therefore, even though the refrigerant is actually only passing through about an inch of core media it does so over and over again. On each pass the filter-drier has the opportunity to absorb a little more of the moisture and acids until the refrigerant is clean and dry.

However, this is not so in the case of the purge unit. The foul gas passing from the chiller to the purge unit has only one shot at removing moisture and acid as it passes through the filter-drier. A standard filter-drier cannot absorb all of the moisture and acids on a single pass through just an inch of core media.

The Redi Controls Patented Dual In-Line "One-Pass" Filter Driers solves this problem by providing 35 column inches (dual in-line filter-drier arrangement) of specially blended desiccant. This extra long column of desiccant is able to clean and dehydrate the refrigerant on a single pass to very near ARI-700 Specifications. As long as the One-Pass Filter-Drier System is properly maintained, it will continue cleaning the refrigerant near to ARI-700 specifications on a single pass. On tight chiller's this may mean replacing the filter-drier set only once a year. On older, leaky chillers the drier set may need to be changed several times a year. However, in either case both the chiller and the purge unit will reap the benefit. Isn't this the reason for having a filter-drier in the first place?

Therefore, the Dual In-line "One-Pass" Filter-Driers protects the purge tank, as well as clean the chiller's refrigerant. Whereas, installing a core type filter drier in the return liquid line leaving the purge only helps the chiller.
*Installing the Dual One-Pass Filter Drier System on the inlet side of the purge tank helps protect the purge tank from corrosion and acid build-up.
*Helps prevent corrosion build-up on the purge tank heat transfer coils thereby maintaining proper thermal transfer for peak purge efficiency.
*Helps remove acid and moisture from the chiller's refrigerant. *Low cost. *Fast and easy to install and change-out.

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