Hitachi HISCREW 2000 Series Instruction Manual page 21

Oil Level Oil Case
Gauge
Oil Case
Oil Filling Port
Draining Port
CAUTION
Replace the lubricant in whole every two
years.
Be sure to drain oil in use (old oil) with
condensate in whole before replacement.
Be sure to use genuine synthetic oil (NEW
A OIL 2000) for lubricant.
If oil is so deteriorated as to produce the sludge or to be green, you can not recover the system's
function even by cleaning the oil cooler, oil case and oil piping. You may have to replace the oil cooler
and overhaul the entire system (including the air end).
Optional Low Oil Level Alarming Feature:
If the ALARM light flashes and the error code E-22 is displayed on the digital monitor, stop the
A, make sure that the system has been depressurized, and turn off the main power; then add
oil. Restart and fully load the A; then press the RESET button.
Oil Cooler Draining Port
(Located under the
right enclosure panel)
CAUTION
4. DAILY CHECK [Lubricant Management]
4.3.2 How to change oil
q Press the STOP button.
w Disconnect the power.
e Be sure that the pressure in the compressor is
decreased to the ambient pressure level (Check if
the Pressure Gauge indicates 0 MPa).
r Detach the door and the right enclosure panel.
t Unplug the oil-draining pipe on the pipe extended
from the oil case.
y Place the oil pan under the oil-draining valve. Open
the oil-draining valve. Let the oil be totally drained
from the oil case. Close and plug the oil-draining
valve.
u Place the oil pan under the oil cooler's plug. Un-
plug the oil cooler. Let the oil be totally drained
from the oil cooler. Plug the oil cooler.
i Unplug the oil filling port. Fill the genuine synthetic
oil (NEW A OIL 2000) into the oil cooler,
until the oil reaches the upper red line on the oil
level gauge.
o Make sure that all the plugs are tightly screwed,
and return the door and the right enclosure panel
to their original places.
!0 Turn the POWER ON. Press the START button
and stop it 7 or 8 seconds later.
!1 Check the oil level with the oil gauge of the oil
case. The level will lower because some of it is
circulating in pipes or oil cooler.
!2 Confirm that the pressure decreases to the level
of the ambient air pressure. Then turn the
POWER OFF and replenish some more lubricant
into the replenish port.
!3 After replenishment, fasten the plug on the re-
plenish port securely.
!4 Press the START button again to check the oil level
when the compressor is at its full load.
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