ClimaCool IOM AR2 SERIES - Manual (Page 49)

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LIQUID LINE DRIER- INSTALLATION AND
REPLACEMENT INSTRUCTIONS
Replace any lost or damaged bolt and/or nut from a replaceable
core Catch-All Filter-Drier . All bolts and nuts torqued to the
proper value are required for proper safe fastening of the end
plate and to prevent leakage . Bolts should be torqued to 14 to
16 ft-lbs on the C-480 Series Catch-Alls . The cores used in
replaceable core Catch-All Filter-Driers are shipped in METAL
CANS HERMETICALLY SEALED to protect them from
contamination by moisture and dirt . The detailed instructions
for assembly and changing cores are given on these cans . The
following condensed instructions may be used if these cans are
not available .
1 . Always pump out the section of the line containing the filter-
drier by closing the hand valve located just before the drier
in the direction of refrigerant flow, and allow the compressor
to operate . After isolated section has been pumped out, close
the liquid line valve just after the filter drier, shut down the
chiller electrically and then change the core . Disposal of the
cores should be handled according to local laws . WARNING!
Dangerous hydraulic pressures may develop if hand valves
are closed and the filter-drier is full of liquid . When liquid
is trapped in a section of line, even a slight increase in
temperature results in a great increase in internal pressure .
2 . Make sure all the refrigerant is pumped out of the Catch-All
shell . The appropriate shut-off valves should be tightly closed .
3 . Remove the end plate and internal assembly, and clean the
internal parts . Remove the activated core from the sealed can .
The metal pull tab and pull strip permit the can to be opened
with the key or a pair of pliers . Do not replace the end plate
gasket unless it is damaged . When replacement is necessary,
select the outer gasket from the set supplied with each core .
Do not cut or abrade the gaskets used in the end plate .
4 . Remove the end spring, wing screw, and inlet plate from
outlet plate assembly . After the replacement core is slid onto
the outlet plate assembly with the proper o-rings, position
inlet plate on the end of the tubular screen . Fasten finger
tight the wing screw to assembly . The screw, when properly
fastened, tightens the components in the assembly thereby
prohibiting component movement and dirt bypassing around
the cores . Assemble the end spring on to the wing screw . The
design of the screw holds the spring in position so that the
end plate can be easily installed (especially when the shell is
mounted horizontally) . The end spring is designed to fit into
the circular groove on the end plate .
5 . Insert the assembly in the shell, replace the flange bolts,
tighten evenly to the recommended torque value (14 to 16 ft-
lbs for the C-R480 Series) .
CAUTION- The edge of the shell fits into the gasket groove
on the end plate and makes a seal against the gasket to prevent
refrigerant leakage . Be careful not to scratch or damage the edge
of the shell when changing the cores . If the edge of the shell
should become damaged, replace the shell to prevent possible
refrigerant leakage .
WHEN TO CHANGE CORES — Cores should be changed when
they become contaminated, or on a regular maintenance schedule .
Disposal of the cores should be handled according to local laws .
Cores that become contaminated with solid particles should be
changed whenever the pressure drop increases to the point where
it reduces system performance . When moisture is the major
concern, change the drier cores according to the indication of
the liquid line sight glass . The cores will remove their maximum
amount of moisture and come to equilibrium in approximately
one day of operation . When either acid or wax is the major
contaminant involved, the cores should be left in the system at
least three days to come to equilibrium thereby removing the
maximum amount of contaminants . Many users of replaceable
core Catch-Alls will change the cores every Spring and Fall as
part of their normal maintenance schedule .
Sporlan Drier Core Model #RCW-48- This drier core is designed
specially for use with POE oils, and is a high water capacity core .
Order this core as separate item . This core should be used on all
ClimaCool AR2 series chillers .
End Plate
Gasket
End Plate
(”-G” Feature Shown)
End Spring
Wing Screw
Inlet Plate
Core
Flange Bolts
and Nuts
O-Rings
Outlet Plate
Assembly
Outlet
Retainer
Plate Gasket
Shell
Liquid Line Drier Core Replacement