Heavy Duty Balanced Opposed Compressors

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FOR MODELS: JG AND JGA SECTION 4 - LUBRICATION AND VENTING proportion of lubricant to a given point. Pressure Gauge Divider Valves - Distribution Block DNFT - Digital No- Flow Timer Shutdown Switch NOTE: The system must be designed to provide positive pressure to the force feed lubricator pump. Pump Suction 1/4 Inch NFT (Female) Customer Connection Oil Supply Tank Oil Filter FIGURE 4-9: FORCE FEED LUBRICATION SYSTEM - INDEPENDENT OIL SUPPLY Sintered Bronze Filter Blow-out Disc Force Feed Lubricator Pump To Appropriate Drain: 1/4 Inch NPT (Female) Customer Connection. Do Not Drain to Crankcase PAGE 4 - 20 11/01
FOR MODELS: JG AND JGA SECTION 4 - LUBRICATION AND VENTING Force Feed Balance Valves Balance Valves are used in high differential-pressure distribution-block applications to reduce system problems such as bypassing, no-flow switch errors or blown rupture discs. A force feed balance valve is shown in Figure 4-10:. Setting and Maintaining Balance Valves Valve Cap Lock Nut FIGURE 4-10: FORCE FEED BALANCE VALVE Balance valves cannot be set prior to operating the unit. Ensure that all fittings are tight and any known leaks have been fixed. Purge the force feed lube system with a high-pressure hand pump, using the same injection oil that is used in service, to remove any trapped air or gas in the system. DO NOT USE ANY OTHER FLUIDS FOR PURGING! Start up the compressor and bring up to normal operating pressure. After the operating pressures have stabilized, adjust the cap on the top of the balance valve if necessary. Loosen the locking nut on the top of the balance valve directly under the cap. Turn the cap clockwise to increase the pressure and counter clockwise to decrease the pressure. Retighten the locking nut against the cap. Set the balance valves and maintain at approximately same pressure on each pressure gauge in the injection lines of the pump system affected. A system should be set and maintained within 500 psi (3400 kPa) total or less. The closer the individual line pressures are maintained, the more reliable the system will become. Once the balance valves have been set, they should be checked 4 to 6 hours later to ensure the pressures have not changed and caused another imbalance. If readjustment is necessary the gauges should be checked again in 4 to 6 hours. If a pressure gauge in a line with a balance valve is reading more than 500 psi (3400 kPa) higher than the others, try to reduce the pressure on that particular injection line. If reducing the balancing pressure on the balance valve does not drop the pressure, then the other balance valves will need to be adjusted to match the highest pressure. To set balance valves equipped with a distribution block inlet gauge only: 11/01 PAGE 4 - 21
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ARIEL Heavy Duty Balanced Opposed C
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FOR MODELS: JG AND JGA TABLE OF CON
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FOR MODELS: JG AND JGA TABLE OF CON
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FOR MODELS: JG AND JGA SECTION 1 -
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Heavy Duty Balanced Opposed Compressors

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