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SECTION 5
LUBRICATION
OIL COOLER, OIL FILTER & SEPARATOR
COMPRESSOR OIL SYSTEM (FIGURE 5–1, page
34) cools the compressor, lubricates moving parts and
seals internal clearances in the compression chamber.
The oil inlet line is connected at the bottom of the oil res-
ervoir. Air pressure in the oil reservoir forces oil through
the oil cooler, thermostatic mixing valve, oil filter and
into the compressor main oil gallery.
The oil passes through internal passages for lubrica-
tion, cooling and sealing. The air–oil mixture is then
discharged to the oil reservoir where a large part of
the entrained oil drops out of the air stream; the air
then passes through the final oil separator where most
of the remaining oil is removed. The separated oil is re-
turned to the compressor and the air passes to the final
discharge line.
RECOMMENDED LUBRICANT – Gardner Denver
compressors are factory filled with AEON lubricants.
These lubricants are formulated to the highest quality
standards and are factory authorized, tested and ap-
proved for use in rotary screw compressors. AEON
lubricants are available through your authorized Gar-
dner Denver compressor distributor.
OIL SPECIFICATIONS (Domestic and International) –
The factory fill compressor lubricant is Gardner Denver
AEON
t
9000 SP lubricating coolant which can be
used for year–round operation. AEON
t
9000 SP is a
synthetic, extended life lubricant which can extend lu-
bricant change intervals up to 4 times that of a petro-
leum based lubricant.
A lubricant analysis program for a periodic check of lu-
bricant quality and remaining life can maximize the
change interval.
Use of improper lubricants will cause
damage to equipment. Do not mix dif-
ferent types of lubricants or use infe-
rior lubricants.
Improper equipment maintenance
with use of synthetic lubricants will
damage equipment. Oil filter and oil
separator change intervals remain
the same as for AEON
t
4000 –– See
Maintenance Schedule, page 48.
HIGH TEMPERATURE OPERATION – Gardner Den-
ver AEON 9000 SP lubricating coolant will operate at
a sustained discharge temperature up to 210
_
F (99
_
C)
when unusually high ambient air temperature is en-
countered.
Air/oil under pressure will cause
severe personal injury or death. Shut
down compressor, relieve system of
all pressure, disconnect, tag and
lockout power supply to the starter
before removing valves, caps, plugs,
fittings, bolts, and filters.
High temperature operation can
cause damage to equipment or per-
sonal injury. Do not repeatedly restart
the unit after high temperature stops
operation. Find and correct the mal-
function before resuming operation.
