F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ
S
ECTION
4 L
UBRICATION
PAGE 4-18
Independent Oil Supply
NOTE: System must pro-
vide positive pressure to
force feed lubricator
pump.
Pump Suction
1/4 inch NFT
(Female)
Customer
Connection
Divider Valves -
Distribution Block
Fluid Flow Moni-
tor No-Flow Timer
Shutdown Switch
To Appropriate Drain 1/4 inch NPT
(Female) Customer Connection
Do Not Drain to Crankcase
Blow-Out
Disc
Force Feed
Lubicator
Pump
Oil Filter
Sintered
Bronze
Filter
Pressure
Gauge
F
IGURE
4-6 F
ORCE
F
EED
L
UBRICATION
S
YSTEM
- I
NDEPENDENT
O
IL
S
UPPLY
Oil Supply
Tank
When process gas
composition and
cylinder operating
conditions require
an independent cyl-
inder and packing
oil supply, the
resulting separate
force feed lube sys-
tems require an oil
supply. Lubricator
oil is supplied
under pressure
from an elevated
tank. To prevent the
compressor frame
oil from being con-
taminated by the
force feed oil, be
sure that the lubri-
cator box over flow
does not drain into
the crankcase. The
lubricator box over
flow tubing must be
disconnected from
the compressor
frame and directed
to an appropriate drain system.
Independent force feed lube systems require oil with a viscosity below 5000 SUS (1100 cSt)
at the lubricator pump inlet. Measures which may be necessary to make sure that the force
feed pump is filled with oil during the suction stroke include; appropriate pipe and fitting size
from the tank to the force feed pump, heating the oil, and pressurizing the supply tank. An in-
line oil filter or fine screen is required between the supply tank and the force feed lubricator
pumps. Recommended filtration is 5 micron nominal.
Force Feed Lubrication System Components
Gas Inlet Debris Screens to Maintain Lube Performance
Even when the proper rate and lubricating medium are in use, dirt and foreign matter in the
gas will prevent the lubricant from performing properly. Prior to start-up, cone type inlet gas
debris strainers with 100 mesh per inch (150 micron) screen and perforated metallic backing
are to be installed in a pipe spool between the inlet scrubber and cylinder suction flange. In
