Gardner Denver ELECTRA-SAVER II Service Manual page 35

SECTION 5
LUBRICATION
OIL COOLER, OIL FILTER & SEPARATOR
AIR––- ––-
OIL -—
F
—.—
TO COMPRESSOR
AIR & OIL ----
J
'ATE'- - ij .Y
'T
u
+
I
!-+"'"-', %
R
~
TO
-.
—
n
T
K
—
~ s
(
GG
A—
B–
c–
D–
E–
F–
G–
H–
J–
K–
L–
M–
N–
P–
R–
HH
AIR COOLED OIL COOLER ~-=~
u
MOTOR
s–
COMPRESSOR
T–
AIR FILTER
u–
OIL RESERVOIR
v–
OIL SEPARATOR
w–
OIL COOLER
x–
FAN AND MOTOR
THERMAL CONTROL (THERMOSTATIC MIX-
z—
ING VALVE
AA–
OIL FILTER
SHUTTLE VALVE
00 –
SEPARATOR TO CYLINDER OIL RETURN LINE
WATER FLOW CONTROL VALVE
EE –
PNEUMATIC BLOWDOWN VALVE
GG–
BLOWDOWN MUFFLER
KK –
OPERATING"AIR PRESSURE SWITCH
FIGURE 1-5. – FLOW DIAGRAM –
COMPRESSOR OIL SYSTEM (Figures 1-5 and 2-5) cools
the compressor, lubricates moving parts and seals internal
clearances in the compression chamber.
The oil suction line is connected at the bottom 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 during the compression cycle. After
compression the air-oil mixture is discharged to the oil
reservoir where most of the entrained oil is removed by
impingement and velocity change The air and remaining
oil then passes through the final oil separator. The sep
arated oil is returned to the compressor oil system and
MAGNETIC UNLOADER
SUBTRACTIVE PILOT (INLET valve
PRESSURE REGULATOR
MINIMUM DISCHARGE PRESSURE VALVE
DISCHARGE CHECK VALVE
HIGH DISCHARGE TEMPERATURE SHUT-
DOWN SWITCH
MAGNETIC WATER SHUTOFF VALVE
OIL LINE CHECK VALVE (REMOTE OVER-
HEAD OIL COOLER ONLY
OIL STOP VALVE (REMOTE OVERHEAD OIL
COOLER only
LOW OIL PRESSURE SWITCH
BLEED AIR VALVE
RESERVOIR PRESSURE SWITCH
AIR-OIL SYSTEMS
D75824
the air passes to the final discharge line
OIL SPECIFICATIONS — The recommended com
pressor lubricant is Gardner-Denver "GD800 Lubricating
Coolant" which can be used for year-round operation
except as noted in the High Temperature Operation para-
graph below. GD800 Lubricating Coolant is a superior pe
troleum base lubricant formulated and containing additives
for use in
Electra-Saver II
compressors
CAUTION
Mixing of different types or the use of inferior lubri-
cants will result in the formation of heavy varnish
and sludge throughout the sys tern
13-9-630
Section 5
Page 1