Safety Practices and Hazards 
Agilent 240/280 Series AA (including Zeeman)  13 
Read all warnings and cautions carefully and observe them always. 
The following symbol may be used on warning labels attached to the instrument. 
When you see this symbol, refer to the relevant operation or service manual for the 
correct procedure referred to by that warning label. 
 
The following symbols appear on the instrument for your information. 
Mains power on 
Mains power off 
Fuse 
Single phase alternating current 
Flame off 
Flame on 
Indicates lamp present 
Disconnect all power plugs. 
Caution, disconnect all supplies, risk of electric shock 
Color coding 
The various indicator lights appearing on Agilent instruments and associated 
accessories are color coded to represent the status of the instrument or 
accessory.