Heavy Duty Balanced Opposed Compressors

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FOR MODELS: JG AND JGA SECTION 3 - START UP Force Feed Lube Pump Lube Box Force Feed Setting Purge Gun Master Divider Valve Block FIGURE 3-1: FORCE FEED PURGING DIAGRAM Secondary Divider Valve Block (when required) -------------------------- Tubing Connections to Cylinder and Crosshead Guide to Packing Cases -------------------------- Balance Valve (when required) An indicator on the distributor block shows the rate at which the block is cycling. Adjust lubricator pump stroke until the indicator strokes at the proper rate. Run at this setting for 200 hours of operation. The lubricator adjustment may then be reduced to the normal operating rate (see Figure 1-5: on page 1-5). When compressor location or operating conditions change, the lubrication rates should be changed according to the Ariel Lube Specifications shown in Tabl e4-1 on page4-8. When two or more force-feed lubricator pumps are manifolded into one distribution block, the following procedure is recommended to adjust pump rates: 1 Start with each pump adjusted to full open. 2 Adjust the pumps in equal increments until the break-in cycle time is properly set. The pumps should be stroking at approximately the same rate. 3 After break-in, the pumps should be readjusted using the same technique until the prescribed cycle time is set. At this rate, the pumps should be operating with a stroke at least 20% of maximum. Pump stroke below 20% of maximum results in unreliable pump output. If necessary, stop one of the pumps and readjust the remaining pump(s) for desired cycle time. PAGE 3 - 10 11/01
FOR MODELS: JG AND JGA SECTION 3 - START UP Water Cooled Compressor Rod Packing Water cooled packing cases may be applied for higher piston speeds, higher pressure or temperature and/or for certain gas combinations. When water cooled packing is supplied approval from Ariel Field Service is required if water cooling is not connected. Cooling water quality and treatment is to be maintained to prevent corrosion and mineral or other deposits. Cooling water must be treated with an appropriate antifreeze if subject to freezing. The coolant flow is to be the number of packing cases x 1 US gallon per minute, minimum for each inch of piston rod diameter (cases x 0.149 L/mm of rod diameter). The cooler should be sized for the number of cases x 20 BTU/minute/inch of rod diameter (cases x 831 J/minute/mm of rod diameter). The coolant into the packing case is not to exceed 130°F maximum (54°C max.). A cooler water temperature is better in high pressure applications. Refer to “Water-Cooled Compressor Rod Packing” on page 5-37. PI = Pressure Indicator TI = Temperature Indicator FI = Flow Indicator Packing Case Oil System Cleanliness Cooler Coolant Circulating Pump FIGURE 3-2: TYPICAL PACKING COOLING SYSTEM Packing Case The compressor frame oil piping system and components are to be free of foreign matter including, but not limited to dirt, sand, rust, mill scale, metal chips, weld spatter, grease and paint. If the Ariel suppled piping is disturbed or additional piping is added, it must be cleaned. It is recommended that a commercial pipe cleaning service be used to clean the oil piping system prior to initial start-up or after major re-application. If that is not practical, proper cleaning procedures using cleaners, acids, and/or mechanical cleaning are to be used to meet cleanliness requirements. Cleaning by-products are to be properly disposed, a disposal service is recommended. It is also recommended that all oil piping systems be flushed using an electric or pneumatic driven pump and filtered clean production oil. All compressor frame cavities are thoroughly cleaned prior to assembly and compressors are test run with a filtered closed loop lube system at the Ariel factory. 11/01 PAGE 3 - 11
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Heavy Duty Balanced Opposed Compressors

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