Heavy Duty Balanced Opposed Compressors - Ariel Corporation

FOR MODELS: JGZ AND JGU SECTION 3 - START UP
Filling Sump & Priming a Main Oil Lube Oil System -
Before Starting
Filling The Sump
1. For compressors with automated lubricating oil fill systems, activate to fill the oil
sump.
2. For compressors without automated fill which use the crankcase as the oil
sump, remove breather and fill compressor sump with lubricating oil through top
cover. When the sump is filled to the proper level, replace and snug up the
breather cap by hand, to facilitate later removal.
3. Check sight glass on auxiliary end. Oil level at start-up should be near the top of
the glass. DO NOT OVERFILL SUMP. The crankshaft will dip into the oil, churn
it, and make it difficult to pump and to control the proper level. (After the
machine is running, it may be necessary to add oil to bring up oil level to onehalf
the height of the sight glass; but it must never exceed two-thirds height
while running.)
4. For compressors with separate oil sump, fill sump with lubricating oil as
required.
Priming - Main Lube Oil System
NOTE: BE SURE THE OIL SYSTEM FROM THE LUBE OIL PUMP THROUGH THE
COOLER AND OIL FILTER IS FILLED WITH OIL.
Remove cover doors and operate the prelube pump to verify that oil is dripping from the
bearing and crosshead positions.
Compressor Prelube
See Section 4 “Compressor Prelube” for the prelube requirements for starting the compressor.
Force Feed Lubricator Adjustment
Be sure that the force feed lubricator pumps are set at the break-in rate shown on the force
feed lubricator data plates. Reference Section 1 for data plate location and legend illustration.
Indicators on the distributor blocks show the rate at which a block is cycling. To adjust,
loosen locknut and turn the feed regulator (plunger stroke adjustment screw) on the pump at
the lubricator box, until the indicator strokes at the proper rate, seconds per cycle. Reference
Section 5 lubricator box chain sprocket illustration for component legend. Re-tighten
locknut. Run at this break-in setting for the first 200 hours of operation. The lubricator cycle
time may then be increased to the normal operating rate. Reference Section 4 for more
information on force feed lube rates.
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