Brochure

Bulletin 110-10 – Page 9
OF SERIES OIL FILTERS
DESIGN BENEFITS
The Sporlan Catch‑All or SF‑283‑F Suction Filter has been used
for many years as an oil filter in systems using mineral or alkyl ‑
benzene oil.
With the use of the new polyolester (POE) oils, system chem‑
istry has changed. POE oil has solvent‑like tendencies and
can suspend and recirculate small, solid contaminants. POE
oil suspends and recirculates a high concentration of 2‑20
micron sized particles, with the largest percentage between
2‑10 microns. Although some particles are smaller than bearing
tolerances, studies have shown bearing life can still be affected.
Bearing wear depends upon the size, hardness, and concentra‑
tion of particles in circulation. To effectively remove these small
particles, Sporlan developed the OF Oil Filters.
The OF Series Oil Filters are designed to be 99% efficient in
removing 3 micron sized particles, and yet have sufficient flow
capacity at a low pressure drop. The unsurpassed filtration abil‑
ity assures clean POE, mineral, or alkylbenzene oil is returned
to the compressors. Clean oil ensures proper operation of the oil
level control and minimizes compressor wear. The Sporlan OF
Series Oil Filters were designed to virtually eliminate the need
for oil changes resulting from suspended solid contaminants in
circulation.
OF-303-BP OIL FILTER
The OF‑303‑BP illustration in Figure 6 shows the normal flow
pattern of oil through the filter.
The design of the OF‑303 is similar to the OF‑303‑BP, but the
OF‑303 is supplied without the bypass feature. The OF‑303‑T is
similar to the OF‑303 except an access fitting is added to assist
with pressure drop monitoring. OF Series Oil Filters can be
installed in a horizontal or vertical position.
ROF-413-T REPLACEABLE OIL FILTER
The illustration in Figure 7 shows the flow pattern of oil through
the ROF‑413‑T Replaceable Oil Filter. The ROF‑413‑T utilizes the
replaceable OFE‑1 Oil Filter Element.
The ROF‑413‑T must be installed vertically, with the end plate
in the “up” position. A refrigeration clamp or a Sporlan A-175-1
Mounting Bracket should be used for easy installation. Removal
of mounting bracket, or connection of refrigerant grade hoses to
inlet and outlet fittings on the filter end plate, allow for flexibility
in changing the OFE‑1 Filter Element.
UL Listed under SA1756-SMGT/SMGT7 for the USA and Canada
with a Maximum Rated Pressure (MRP) of 650 psi (45 bar).
Bypass Feature - Open
Feature is designed to open only if the filter becomes plugged and a 30 psi (2.1 bar) differential exists across filter.
NOTE: The OF-303-BP should be placed between oil separator and oil reservoir on low pressure oil systems.
Figure 6
OF-303-BP Oil FIlter
Bypass Feature - Closed
Normal position - spring loaded teflon seat ensures tight seal
UL Listed under SA1756-
SMGT/SMGT7 for the
USA and Canada with a
Maximum Rated Pressure
(MRP) of 650 psi (45 bar).