Heavy Duty Balanced Opposed Compressors

FOR MODELS: JG AND JGA SECTION 4 - LUBRICATION AND VENTING
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. When replacing
lubricator reservoir oil, use new frame oil, except with an independent force
feed supply, then use cylinder oil. If a synthetic oil is used, drain and clean reservoir
before re-filling.
2 The system has been filled with mineral oil at the factory, and unless the piping
has been disturbed, it is ready for operation. 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. Priming the force feed lubrication
system requires the use of a priming pump (G-7162); refer to “Ariel Optional
Tools” on page 7-1 and “Priming/Purging the Force Feed System” on page 4-9.
3 If the unit has been overhauled, adjust the lubricator for maximum delivery.
Refer to Figure 5-10:. Loosen the adjusting screw locknut. 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.
Running Conditions
When the machine is running, make sure that the oil level in the lubricator reservoir is at
least one-half way up the sight level, but does not exceed two-thirds.
See your packager's specific data to determine the normal operating conditions, the cylinder
working pressures, and the rated speed.
System Design Considerations and Operating Parameters
To optimize force-feed lubrication system operation, Ariel uses the following general guidelines:
1 Minimal use of “master/slave” distribution blocks in favor of lubricator pumps
dedicated to an individual distribution block.
2 Maintain lube ratios within prescribed limits and cycle times as low as possible
(10 sec minimum) to provide each point with lubrication as frequently as possible.
3 Multiple pumps with manifolding are used to ensure that 150% of the normal
lubrication rate can be provided during break-in.
4 Pumps are not allowed to operate below 20% of full stroke, the point at which
they become unreliable.
5 In some applications, to optimize operation of the lubrication system, a single
twin divider output is used to deliver lubrication to both a packing and a cylinder.
6 In some applications, cross-porting of divider valves is used to deliver the proper
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