Thermo Scientific SAM12 Manual page 8

The following is an explanation of the warning symbols seen on the SAM12.
Please read this information before using and/or maintaining this equipment.
vi SAM12 User Manual
WARNING SYMBOLS:
As seen on the back of the 5689A Electronics Housing
CAUTION: Isolate the mains supply and wait one
minute before removing this cover.
As seen on the FHT681 HV Amplifier board screen located
inside the 5689A Electronics Housing.
CAUTION: Isolate HV supply to the printed circuit
board before removing cover. With
power connected and unit switched on,
a max. voltage of +1500V DC with a
maximum short circuit power of 825 milli
watts is present.
CAUTION: Risk of electric shock.
Thermo Fisher Scientific