51
8-9 OIL IS MIXED IN DELIVERED AIR (oil not fully separated)
The machine is not installed on level
ground
…
Install it on level ground (allowable inclination is
5°forward/backward and left/right directions).
Delivered air pressure is low
Set pressure retaining valve to 0.42 to 0.7 MPa.
Compressor oil level is higher than the
upper limit
…
Confirm than the level is within the specified
range when the engine is stopped.
Drainage is larger than usual
…
Open the drain valve to extract drainage
in the oil chamber.
Filter orifice of the oil return pipe are
clogged
…
Check and clean the orifice.
Engine was started with the unloader
valve set to “RUN” position.
…
Start the engine with the unlaoder valve
set to “START” position and operate
it in a no-load condition.
Service valve(s) or start run valve
has been quickly opened after
the engine stopped
…
Do not attempt to quickly discharge it through
the air outlet valve(s) after the engine stopped.
Life of the oil separator has come to
an end
…
Replace.
8-10 OVERHEATING
Re-confirm surrounding conditions
…
Reduce suction of exhaust gas.
Cooling water is emptied or short
…
Check and replenish cooling water.
Check and replace radiator cap.
Fan belt is loosened
…
Check and retighten.
Radiator and oil cooler cores are clogged
…
Clean.
Delivery pressure is high
…
Check and repair pressure regulator valve.
Engine thermostat is abnormal
…
Check and readjust.
Summary of Contents for DIS-390ES
Page 58: ...55 10 2 Outline drawing DIS 390ES...
Page 59: ...56 DIS 390ES trailer type...
Page 60: ...57 DIS 390ES C...
Page 61: ...58 DIS 390ES C trailer type...
Page 62: ...59 DIS 390ES D...
Page 63: ...60 DIS 390ES D trailer type...
Page 64: ...61 10 3 Combined Piping Diagram DIS 390ES...
Page 65: ...62 DIS 390ES C...
Page 66: ...63 DIS 390ES D...
Page 67: ...64 10 4 Engine wiring diagram...