System Of Each Component; Compressed Air And Lubricant System - Hitachi HISCREW V PLUS NEXT Series Instruction Manual

6. SYSTEM OF EACH COMPONENT

6.1 Compressed Air and Oil Subsystems
from Air Compressor
Aftercooler
Fan Motor
Cooling Fan
Minimum
Pressure/
Check Valve
TH2
Oil Separator
Tank
Oil Temperature Control Valve
Oil
Discharge
Coolant air flow
TH1：Thermistor (discharge air temp. 1)
TH2：Thermistor (discharge air temp. 2)
PS ：A pressure sensor (for capacity control)
6.1.1 Compressed air subsystem
The air under atmospheric pressure is taken in the unit
through Air Intake Filter and is compressed by a com-
pressor to the specified pressure.
This Compressed Air flows in the Oil Separator Tank
together with Lubricant, and by which Compressed Air
and Lubricant are separated. The compressed air after
the oil separation in the Oil Separator Tank is cooled in
the Aftercooler and then discharged out.
Air Exhausted
Oil Cooler
PS
Air Intake Filter
63
Oil
SV
Separator
63E
P
Oil Filter
TH1
Compressor
Compressed air flow
P
63E
63SV : Pressure differential sensor of air intake filter
Suction Throttle Valve
Main Motor
Lubricant flow
: Pressure Gauge (For displaying oil separator tank internal pressure)
: Pressure switch
6.1.2 Oil subsystem
The lubricant circulates in the unit by means of pres-
sure dif ference between the pressure in the Oil
Separator Tank and that in the suction side of the com-
pressor. The mixture of the compressed air and the
lubricant which exchanged the heat from the com-
pressed air to the lubricant is separated to the com-
pressed air and the lubricant in the Oil Separator Tank.
The separated lubricant is cooled in the Oil Cooler
afterwards, returns to the suction side of Compressor
and exchange heat from compressed air again.
Compressed Air
Discharged
Air for Cooling
Unit
Air into
Air End
29