Gardner Denver ELECTRA-SAVER II Service Manual page 36

2-1/2" (MINIMUM) I.P.S. *PIPING
,,.~
HERE —
FROM POINT (3) TO POINT (4)
(OIL COOLER INLET TEE TO
OIL RESERVOIR OUTLET LINE
CHECK VALVEI AND FROM
r+
POINT (5) TO POINT (6) (OIL
COOLER OUTLET TO OIL STOP
VALVE AT OIL FILTER INLET)
SUPPLIED BV CUSTOMER. SEE
"INSTALLATION" SECTION 2.
.— -
C75851
E ,, .—
. . . . .
+
0,, RESERVO, R
)
3
GATE "k.".
)
PILOT O, E*ATED
OIL STOP VALVE
7
FIGURE 2-5. – OIL FLOW DIAGRAM –
REMOTE OVERHEAD MOUNTED OIL COOLER
Recommended Oil
Temperature Range
Gardner- Denver
Year- round operation at
GD600 discharge temperatures to
Lubricating Coolant
200° F.
Gardner- DenveP
Over four (4) hours sustain
GD6000 ed discharge temperature
Lubricating Coolant
between 200-210° F.
FIGURE 3-5. – COMPRESSOR LUBRICANT
SYNTHETIC LUBRICANTS — Certain synthetic Iubri
cants such as synthetic hydrocarbons diester or polyesters
offer an extended drain interval when used in screw com
pressers A superior diester lubricant is available in
Gardner-Denver "GD8000
Lubricating Coolant" which can
extend lubricant change interval from 2 to 4 times that of
GD800. A good lubricant analysis program for periodic
check of lubricant quality and remaining life can maximize
the change interval See the instructions on use of GD8000
in systems previously filled with other lubricants under
" High Temperature Operation" below.
A
, WARNING
Do not mix GD800 and GD8000 Lubricating Coolants
or other petroleum or synthetic lubricants
CAUTION
Regardless of synthetic lubricant change interval used
oil filter and oil separator change intervals remain the
same as for GD800 — See Maintenance Schedule
Section 8.
HIGH TEMPERATURE OPERATION — If the dis
charge temperature is sustained between 200-210° F.
for a period of more than four(4) hours due to contin
uing high ambient air or water temperatures use
Gardner- DenveP "GD8000
Lubricating Coolant"
which is a superior viscosity grade diester synthetic
lubricant Short periods of
Up to
four(4) hours of sus
tained discharge temperatures Up to 210* F. do not
require a change from the recommended year-round
lubricant GD800.
When installing GD8000, the original lubricant
should be drained completely and the system flushed
before filling with GD8000. Complete draining will
involve removal of all plugs in the compressor, oil
reservoir and oil lines In some cases piping may
require removal to insure complete draining To in
sure complete removal of the original lubricant good
practice indicates draining of the original lubricant
refill with GD8000, operation for 100 hours then
draining and final refill
A
, WARNING
Do not mix GD800
Coolants or other
lubricants
and GD8000 Lubricating
petroleum and synthetic
A
, WARNING
Do not set the High Discharge A ir Temperature
switch above +225° F to compensate for high
temperature operation
Use caution when selecting GD8000 lubricant as some
downstream air system components such as air line IU
bricator bowls gaskets and valve trim may not be com
patible Check with the component supplier for suitability
of the part with diester synthetic lubricant All materials
used in Electra-Saver II compressor units are compatible
with GD8000.
COLD AMBlENT OPERATION – Gardner-Denver
"GD800 Lubricating Coolant" must be used when the
ambient temperature drops to +40° F. in the space en
closing the compressor unit/oil cooler module See" lnstall
ation for Cold Weather Operation" in Section 2.
If a synthetic lubricant is used a lighter viscosity lubricant
than
Gardner-Denver GD8000
is necessary in the temper-
ature range of +10° F. to 40° F. The lighter viscosity
lubricant must have foam
depressant oxidation and Corro
sion inhibiting characteristics equal to those of GD800 and
meet these minimum specifications
Viscosity at'l OOO F. . . . . . . . . . . . . . . . . . . . . . . . . . . . 140SUS
Viscosity at210° F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44SUS
Pour Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60° F.
ADDITION OF OIL BETWEEN CHANGES must be
made when level of oil in the gauge is below the RUN range
while the unit is operating
DANGER
Stop unit and be sure no air pressure is in the oil
reservoir
13-9-630 Section 5 Page 2