To Check Valve
To Lube Point
F
IGURE
4-21 O
IL
H
EAD
T
RAP
F
ITTING
1 in. (25 mm)
Head
F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ
S
ECTION
4 L
UBRICATION
PAGE 4-51
Oil Head at Lube Points
The force feed system provides a minimum of
1-inch (25 mm) of oil head at lube points to extend
check valve life. Where the 1-inch (25 mm) of head
is not inherent, an oil trap fitting is provided, see the
Figure.
NOTE: PRESSURE IN FORCE FEED LUBE
LINES IS, AS A MINIMUM, 110% OF
THE CYLINDER SUCTION GAS PRES-
SURE.
Force Feed Lubrication System and Running Conditions
Force Feed Lubrication System
1.
Check sight glass on lubricator reservoir to make sure it is properly filled with oil.
The oil in the reservoir is used to lubricate the worm gear and cam; it does not
flow through the system. The reservoir also catches lube pump overflow. Oil is
added only if it becomes necessary to raise the reservoir oil level.
2.
The force feed system has been filled with mineral oil at the factory. If piping has
been removed, or if the system has been drained, it can be filled and primed
through a 1/8 inch plug on the discharge end of the lubricator pump.
3.
Prime the force feed lubrication system just prior to starting the compressor
using a proper priming pump; refer to “Ariel Tools - Purchased Separately” in
Technical Manual Section 7. Use clean force feed lubricating oil of same type
and grade as being used in service. Do not use any other type or grade of fluid
for priming.
4.
If the unit has just been overhauled, adjust the lubricator for maximum delivery.
Reference Technical Manual Sections 3 and 5. Loosen the adjusting screw lock-
nut. Turn the plunger stroke adjustment screw to the full up position. Tighten the
adjusting screw locknut. Proper feed rate may be set after the machine is
started.
5.
When there are two or more pumps manifolded and feeding one distribution
block, the best way to adjust them is equally. Start with pumps wide open, and
adjust them together so that when the break-in cycle time is set, the pumps are
stroking about the same. After break-in period, adjust the pumps in the same
T
ABLE
4-14 F
ORCE
F
EED
L
UBRICATOR
R
ESERVOIR
O
IL
C
APACITY
LUBRICATOR TYPE - ARIEL
DESIGNS
US GALLONS
LITERS
Single Pump
0.25
1
Dual Pump
0.5
1.75
Four Pump
0.8
3
