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Exhaust temperatures Raw water pressure Lube oil pressure Air box pressure
damage to the un-loader operating diaphragm an increase in current flow to the motor high pressure in the receiver and filter an excessive consumption of crankcase oil
first stage second stage distillate cooler salt water feed heater
increase compressor discharge pressure on demand increase compressor operating speed as necessary allow the motor to turn the compressor opposed only by friction reduce the compressor frictional load when starting
Pressure-reducing valve Unloading valve Counterbalance valve Pressure-relief valve
a low level in the engine expansion tank excessively high coolant pressure improper temperatures malfunctioning of the jacket water heater
speed, torque, and horsepower production firing order, valve timing, and valve lift fuel consumption, efficiency, and cylinder pressure scavenge pressure, compression ratio, and exhaust pressure
engine speed engine load intake manifold pressure atmospheric pressure
Exhaust temperature Lube oil level Lube oil pressure Water level in the expansion tank
a pressure reducing valve a pilot valve an operating piston downstream pressure
low sulfur content in the fuel a loose injector inlet connection late fuel injection high injection pressure
maintain liquid refrigerant at the suction of the compressor maintain a preset suction pressure to the compressor start and stop the compressor at preset operating pressures operate at minimum efficiency
a defective or broken high pressure un-loader a loose valve plate excessive overload no compression
exhaust air box pressure brake main effective pressure all of the above
reduce the engine load increase the cooling water flow increase the lube oil pressure adjust the fuel rack
reduce the turbocharger operating temperature increase the pressure of the inlet air increase the density of the inter air reduce the blower operating temperature
high-pressure cutout switch is jammed open low-pressure switch is jammed shut thermal bulb is not operating properly scale trap is clogged
an immediate crankcase explosion oil contamination in the compressed air a decrease in compressor capacity no immediate loss of the compressed air capacity
closely observe the pump discharge temperature close off the discharge valve, and watch for a rise in pressure momentarily close off the suction valve, and watch for a rise in pressure use a clamp on ammeter and compare the readings to past records
viscosity will decrease volume will increase volume will decrease pour point will be reduced
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