Lubrication - Oil Cooler, Oil Filter And Separator; Compressor Oil System; High Temperature Operation; Lubricant Change Procedure - Gardner Denver Electra-Screw EDEQHF Operating And Service Manual

SECTION 5
LUBRICATION
OIL COOLER, OIL FILTER & SEPARATOR
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FIGURE 5-1 - FLOW DIAGRAM - AIR-OIL SYSTEM
COMPRESSOR OIL SYSTEM (Figures 5-1) cools the
compressor, lubricates moving parts and seals internal
clearances in the compression chamber.
The oil inlet line is connected at the top of the oil reservoir.
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 lubrication,
cooling and sealing. The air-oil mixture is then dis-
charged 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 returned
to the compressor and the air passes to the final dis-
charge line.
RECOMMENDED LUBRICANT - Gardner Denver com-
pressors are factory filled with AEON 'Mlubricants. These
Iubricantsareformulated to the highest quality standards
and are factory authorized, tested and approved for use
in rotary screw compressors. AEON 'M lubricants are
available through your authorized Gardner-Denver com-
pressor distributor.
OIL SPECIFICATIONS - The recommended compres-
sor lubricant is Gardner Denver AEON '" 4000 Lubricat-
ing Coolant which can be used for year-round operation
except as noted in the "High Temperature Operation"
paragraph below, or low temperature, see "installation
for Cold Weather," Section
2,
page
2.
AEONTM 4000
Lubricating Coolant is a superior petroleum base
lubricant formulated and containing additives for use in
Gardner Denver compressors.
I
CAUTION
I
Specific AEON lubricants are recom-
mended for use in this equipment.
Other lubricants may cause excessive
carryover or compressor damage. Do
not mix different types of lubricants.
HIGH TEMPERATURE OPERATION - If the discharge
temperature is sustained between 200-21 O°Ffor a period
of more than four (4) hours due to continuing high
ambient air temperature, use Gardner Denver" AEON
9000 SP Lubricating Coolant which is a superior syn-
thetic lubricant. Short periods of up to four (4) hours of
sustained discharge temperatures up to
21
O°F do not
require a change from the recommended year-round
lubricant AEON 'M4000.
LUBRICANT CHANGE PROCEDURE - Upgrading to a
longer life lubricant is essentially a very worthwhile prac-
tice. Following are the primary steps to be completed
when upgrading or changing the type of lubricant.
1. Thoroughly drain system:
- Drain oil from air end and cooler while hot.
- Break low point connections and drain oil from
pipe runs.
13-8-610 Section 5 Page 1