Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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FOR MODELS: JGZ AND JGU SECTION 3 - START UP Maximum allowable working pressure is the maximum continuous gauge pressure for which the compressor manufacturer has designed the equipment (or relevant part thereof) when handling the specified fluid at the specified temperature. Maximum allowable working pressure of compressor cylinders shall exceed the rated discharge pressure by at least 10 %, or 25 psi (1.7 bar), whichever is greater. The maximum allowable working pressure shall be at least equal to the specified relief valve set pressure including accumulation. The rated discharge pressure (RDP) is the highest pressure required to meet the conditions specified by the purchaser for the intended service. Relief Valve Settings ! CAUTION OPERATING CONDITIONS MUST NOT EXCEED CYLINDER DESIGN LIMITATIONS. It is the responsibility of the packager to provide relief valves for every stage of compression in compliance with ISO 13631. Relief valve location and settings, including accumulation, shall take into consideration all possible types of equipment failure, mal-operation and the protection of piping systems. Relief valves shall be set to operate at not more than the maximum allowable working pressure, but not less than the values listed in ISO 13631: ! CAUTION WHEN A BYPASS IS FURNISHED, A RELIEF VALVE MUST BE INSTALLED IMMEDIATELY DOWNSTREAM OF THE BYPASS VALVE OR ON THE INLET SCRUBBER OF THE DOWNSTREAM CYLINDER. THIS RELIEF VALVE MUST NOT BE SET HIGHER THAN THE MAXIMUM ALLOWABLE WORKING PRESSURE OF THE CYLINDER WHICH HAS THE LOWEST MAWP OF THOSE IN THE BYPASS CIRCUIT. THIS IS TO PROTECT AGAINST DISCHARGE CHECK-VALVE FAILURE WHEN OPERATING ON BYPASS. 7/09 PAGE 3 - 13
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. PAGE 3 - 14 7/09
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Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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