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How to Operate the Control Panel
1. Power Switch
Before inserting the power cord into the power outlet, be sure to set the power switch
to the OFF position.
Power is turned ON by turning the key switch to the right from the OFF position. The
version is first displayed on the LCD screen, followed by the main screen (preset flow
rate). After this, the LV-250R can be operated.
When the key switch is turned right from the ON position, the keys are in a locked state.
In this state, the switches on the panel sheet do not operate even if pressed. In this
state, the [KEY LOCK] lamp lights.
Note: When the keys are in a locked state, make sure that the backlight is out.
When canceling the key lock, take care not to turn the key switch to the OFF
position by mistake.
2. Backlight
Pressing the [BACK LIGHT] key on the control panel turns the LCD backlight ON.
Pressing the key again turns the backlight OFF.
3. Data Output
Data can be output to a PC or other external device by pressing the [COM] key. For
details, refer to the operation manual for the data output software (Communication
cable with software for LV-250/LV-40B).
