Heavy Duty Balanced Opposed Compressors

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FOR MODELS: JG AND JGA SECTION 4 - LUBRICATION AND VENTING Discharge Description & Adjustment Oil pump discharge pressure is held nearly constant by a spring loaded regulating valve within the pump head. Lube system pressure can be raised or lowered by adjusting this valve (see Figure 4-13:). Lube Oil Pressure NOTE: NORMAL PRESSURE ON THE DISCHARGE SIDE OF THE LUBE OIL FILTER IS SET AT THE FACTORY AT 60 PSI (414 kPa) WHEN CRANKSHAFT SPEED EQUALS OR EXCEEDS 750 RPM FOR THE JG AND 900 RPM FOR JGA. IF OIL PRESSURE DROPS BELOW 50 PSI (350 kPa), THE CAUSE MUST BE FOUND AND CORRECTED. Low Oil Pressure Shutdown Suction FIGURE 4-13: LUBE OIL PUMP - JG:A/4 & JGA/6 Adjustment Bolt (Turn Clockwise to Increase Pressure) Locknut Cap Shown Removed The low oil pressure shutdown is normally mounted by the packager and is supplied to customer specifications. Ariel provides an oil pressure pickup fitting on the oil gallery located after the cooler and filter. The electric or pneumatic oil pressure switch is to be set to actuate when oil pressure falls below 35 PSIG (240 kPa). NOTE: 1. THE COMPRESSOR MUST HAVE A WORKING LOW OIL PRESSURE SHUT- DOWN. PAGE 4 - 26 11/01
FOR MODELS: JG AND JGA SECTION 4 - LUBRICATION AND VENTING 2. DO NOT ATTEMPT TO ADD OIL TO THE CRANKCASE THROUGH THE BREATHER HOLE WHILE THE UNIT IS RUNNING. THIS WILL CAUSE OIL FOAMING AND UNNECESSARY NO FLOW SHUTDOWNS IN THE FORCE FEED LUBRICATION SYSTEM. 3. SINCE THE FORCE FEED LUBRICATION SYSTEM IS CONSTANTLY USING OIL FROM THE CRANKCASE, A WORKING CRANKCASE OIL LEVEL CON- TROLLER IS NECESSARY. THIS MUST BE DESIGNED TO ALLOW OIL TO FLOW INTO THE CRANKCASE FROM AN OVERHEAD TANK AT ALL AMBI- ENT TEMPERATURE CONDITIONS. 11/01 PAGE 4 - 27
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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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