Omega Engineering 185-210 DUS, JD 4045 manual Engine Components

AIR/OIL SEPARATOR

At the compressor discharge the compressed air and the hot oil flow into a steel ASME coded pressure vessel (rated at 175 psig-250psig) that acts as a reservoir for the air and separates out the oil. From the bottom of this oil sump the oil leaves the vessel on its way to the oil cooler. The air and the slight oil mist still entrained in the air flow through the separator element, which removes the last of the oil from the air. The air passes on out to its final use and the separated oil goes through the scavenge line to the compressor to re-enter the system.

As the compressor air leaves the receiver it goes through a minimum pressure valve that is set to maintain at least 80 psig (55kpa) in the receiver when the compressor is running. The purpose of this pressure is to ensure that there is pressure to force the oil out of the bottom of the receiver, through the oil cooling system, so that sufficient oil is injected into the compressor.

CONTROL SYSTEM

The Boss compressor system is simple to operate. Starting procedure is explained in section 3 and on the instrument panel door of the compressor. Each machine has an On/Off switch and a safety bypass switch that bypasses the safety shutdowns. Once the machine is “on line” and in the run position, control is automatic. The control system senses the need for air and adjusts the speed of the engine and compressor as well as the opening of the compressor inlet valve to supply the amount of air needed. If the air demand is zero, the engine and compressor “idle” and the inlet valve is shut to control the air entering the compressor. If the demand is maximum, the opposite happens, full speed and wide-open inlet valve. Intermediate air demands give intermediate speeds and valve openings for maximum operating efficiency. Service and adjustments are in section 4.14.

2.3 ENGINE COMPONENTS

ENGINE DESCRIPTION

The engine in each Boss compressor system is selected to have reserve horsepower and speed necessary to drive the compressor and all accessories when operating up to a discharge pressure 100 psig (686kpa) to 220 psig (1509kpa).

RADIATOR

The radiator is selected to handle the heat load of the engine. Mounted next to the compressor oil cooler. Cooling air is moved through these two coolers with a specially selected engine fan. The system is designed to handle extreme heat conditions.

FUEL SYSTEM

All units are supplied with fuel tank capacity adequate for a day’s normal operation, fuel filtering system and optional low fuel shutdown. See section 4.3 for fuel servicing.

MUFFLER

Engine noise is reduced by a durable, low restriction engine muffler.

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P/N: 307271