3.5 Daily Operation
3.5.1 Before power on
3.5.2 Power on
①
Connect the power.
②
POWER
light on the instrument panel glows.
③
Fully open the valve on discharge side.
Front Door
Oil Level Gauge
Upper
red line
Lower
level line
Oil Filing
Port
③
①
Power
Supply
RUNNING CONTROL
RUNNING MODE
ALARM
警 报
运行状况
故 障
LOAD
SHUTDOWN
REMOTE
负 载
远 程
电 源
POWER
自动启动
AUTO START
停 机
STOP
开 机
START
1
2
存 储
远 程
REMOTE
显示转换
/
扩展模式
STR
功 能
FUNC
重新设定
RESET
SELECT/WIDE
运行管理
②
Oil level is higher than the upper red line before staring
and between the two red lines after starting. This is nor-
mal because some oil in the oil separator tank is pres-
sure-fed to oil cooler and oil piping to lower oil level.
Control oil level, therefore, during operation.
①
Make sure that oil level is higher than the upper red
line.
②
Make sure again during operation that oil level is
between the two red lines, because it lowers after
starting.
●
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 regional office if there is any
question.
●
When the
HISCREW
stops and restarts frequently, repeats load-and-unload operation in a short peri-
od, or the ambient temperature and humidity are high, open the valve at the oil drain port to check
whether condensate has been collected in the oil separator tank. If you do not observe this instruc-
tion, the air end (rotors, bearings, etc.) and the components rust internally to cause a failure and/or
the oil deteriorates. For more information,
see p. 19.
CAUTION
For safety, the machine cannot be operated for 5 seconds
after turning the power on even if the
START
button is
pressed. If the
START
button is pressed within the period
between 5 and 15 seconds after the power-on, the
STANDBY
light blinks for up to 10 seconds for prepara-
tion and then the compressor is started.
IMPORTANT
17
3. HOW TO OPERATE [Daily Operation]
IMPORTANT