15
q Check if oil level is kept within the range be-
tween upper and lower red lines. However,
since the oil level may lower a little while op-
eration of the unit, check again the level when
the unit is in operation.
3. HOW TO OPERATE [Daily Operation]
3.5 Daily Operation
3.5.1 Before power on
3.5.2 Power on
q Connect the power.
w POWER light on the instrument panel glows.
e Fully open the valve on discharge side.
r Fully open the valve for the condensate drain
trap.
● Do not operate the machine with the pressure excess of its rated pressure. Excessive pressure gives
overload to the motor and may damage some parts or even cause SHUTDOWN of the compressor.
● Investigate the cause and take necessary measures when the Relief Valve functions or the compres-
sor stops by other safety device. Ask your dealer or your nearest Hitachi Service Station if there is
any question.
● When the A automatically stops and restarts frequently, or the ambient temperature and
humidity are high, open the oil/condensate drain valve of the oil case to drain the condensate from
time to time. If you do not observe this instruction, the air end (rotors, bearings, etc.) and the compo-
nents rust internally to cause a failure and/or the oil deteriorates. For more information, see page 17.
CAUTION
Oil Level Gauge
Upper
red line
Lower
level line
Oil Filling
Port
Front
Door
④
②
①
③
Power
Supply
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