System Of Each Component; Compressed Air/Lubricant System - Hitachi HISCREW 2000 Series Instruction Manual

6. SYSTEM OF EACH COMPONENT

6.1 Compressed Air/Lubricant System

Air Exhausted from Air Dryer
Air Sucked
onto Air Dryer
Compressed Air
Discharged
Condensate
Drained
Air Sucked into
Air End
Air Intake Filter
Oil Discharge
TH1 : Thermistor (discharge temp. 1)
TH2 : Thermistor (discharge temp. 2)
PS(1): A pressure sensor (for capacity control)
6.1.1 Compressed air flow
The air under atmospheric pressure is taken in
the unit through Air Intake Filter and is com-
pressed by a compressor to the specified pressure.
This Compressed Air flows in the Oil Case to-
gether with Lubricant, and by which Compressed
Air and Lubricant are separated. Segregated
Compressed Air is cooled in the Aftercooler and
then discharged out.
28
Cooling Fan
Refrigerant
Compressor
Air Cooler
６ ３ＳＶ
Unloader
Compressor
６ ３ Ｅ
Oil Case
Oil Temperature Control Valve
Motor
Coolant air flow Compressed air flow
Air Exhausted from Air Compressor
Fan Motor
Oil Separator
Minimum
Pressure/
Relief
Check Valve
Valve
ＴＨ１ ＴＨ２
ＰＳ
（1）
Oil Filter
Lubricant flow
63E : Pressure switch
63SV : Pressure differential sensor of air intake filter
6.1.2 Lubricant flow
The Lubricant circulates in the unit by means of
pressure difference between the pressure in the
Oil Case and the one in the suction side of the
Compressor. The mixture of Compressed Air and
Heat Exchanged Lubricant are separated in the
Oil Separator into the Compressed Air and the
Lubricant. Segregated Lubricant is cooled in the
Oil Cooler afterwards and returns to the suction
side of Compressor, then it makes Heat Exchange
with another Compressed Air again.
Cooling Fan
Air Sucked onto
Aftercooler
Aftercooler
Air Sucked onto
Oil Cooler
Oil Cooler
Air Sucked onto
Motor