Brochure

How It Works
Bulletin 40-10 – Page 5
For additional information on “The Secret of the Catch-All’s Success” request Form 40-119
The famous molded
porous core of the
Catch-All
®
Filter-Drier
performs these vital
functions:
reMoves Moisture
The Catch-All Filter-Drier removes
moisture from the refrigerant and lubri-
cant by adsorbing and retaining moisture
deep within the desiccant granules. The
blend of desiccants used in the Catch-All
is specially formulated for exceptional
moisture removal. The high degree of
activation ensures maximum water
capacity, which means the core removes
a large amount of water in one pass,
thereby protecting the expansion valve
from possible freeze-up. Since the refrig-
erant must flow through the core, maxi-
mum contact between the two ensures
rapid system dehydration.
reMoves foreign Matter
Scale, solder particles, dirt, and all types
of foreign substances must be removed to
protect the compressor, solenoid valves,
expansion valves, capillary tubes, and
other close tolerance parts of a refrigera-
tion system.
The solution to system filtration is the
Catch-All Filter-Drier. The Catch-All
has been designed to do the job with
maximum efficiency. It removes these
particles, down to the minimum size,
in one pass filtration. Furthermore, the
large filtering surface available on the
core results in the ability to collect a large
amount of dirt with negligible pressure
drop. If plugged, the Catch-All will not
burst allowing trapped substances back
into the system.
reMoves acids
The Catch-All Filter-Drier is unexcelled
in acid removal ability. The hydrochloric,
hydrofluoric, and various organic acids
found in used oil samples are harmful in
a system. These acids are adsorbed and
remain on the desiccant in a manner
similar to the adsorption of moisture.
Laboratory tests have shown that the
Catch-All Filter-Drier’s desiccant has an
acid removal ability superior to other des-
iccants used in other refrigeration driers.
Compared to other filter-driers designed
for today’s systems, tests show the Catch-
All Filter-Drier removes much more acid
(on an equal weight basis).
The Catch-All has demonstrated excellent
field performance in cleaning up severely
contaminated systems, whether due to
acid, lubricant breakdown, or to hermetic
motor burnout. Its success in field service
work and in protecting new systems is
largely due to its outstanding ability to
remove acid and the products of lubricant
breakdown.
reMoves sludge and varnish
Even the best refrigeration lubricants fre-
quently break down to produce organic
acids and possibly varnish and sludge.
These products of lubricant decomposi-
tion, are formed due to excessive heat or
air in the system. Varnish can plug small
orifices and accumulate on compressor
valves causing eventual valve failure.
The ability of various desiccants to
remove these products of lubricant
decomposition has been evaluated in
sealed glass tubes. Of all the desiccants
tested, only the desiccant used in the
Catch-All Filter-Driers proved capable of
removing the products of lubricant break-
down. This ability makes the Catch-All
Filter-Drier highly effective in cleaning
systems that have had a hermetic motor
burnout, and in protecting new systems
by preventing an accumulation of these
lubricant breakdown products.
ACID REMOVED BY DRIER
TOTAL ACID NUMBER
100% MOLECULAR SIEVE
FILTER-DRIER
CATCH-ALL
organic acid reMoval aBilitY