Hitachi Microscope & Magnifier S-4800 Manual De Usuario

SAFETY - 10

 

 

Beware of 
electric shock 

•  Voltages up to 100 V AC and 30 kV DC are used inside this 

instrument.    Do not touch inside or you may receive an electric shock. 

•  Do not remove the covers of column unit, control unit or power unit 

and do not touch internal parts or circuits while the instrument power 
is turned on.    There is a hazard of fatal or serious injury due to 
electric shock. 

•  Avoid removing the covers of the instrument.    If they must be 

removed, make sure to first turn off all power to the instrument. 

•  The electron gun and ion pump are heated to about 250°C in order to 

keep the electron gun in a high vacuum.    Touching these sections 
would result in burns. 

 

Beware of high 
temperature 

 

•  The temperature of the oil rotary pump rises up to about 70°C, while it 

is operating.    Touching the pump may also result in burns. 

 

Beware of low 
temperature 

 

•  When you replenish liquid nitrogen in the cold-trap of DP and the   

anti-contamination trap, be sure to wear eye-protection glasses and 
protective gloves to keep liquid nitrogen from splashing on the eyes or 
the skin.   

 

•  Anyone working on the electrical part of the system should follow the 

correct lock-out tag-out procedures for that location. 

•  The user should prepare a mains switch box on which the lock-out 

and the tag-out procedures are provided. 

•  Electrical hazards can occur if lock-out tag-out procedures are not 

followed. 

 

Magnetic Fields 

•  The ion-pump produces magnetic fields.    There are fringing magnetic 

fields of about 100 Gauss from the ion-pump and 10 Gauss at the 
outside of the ion-pump cover. 

 

Any person who has a pacemaker embedded is not allowed to 
approach the ion-pump. 

 

Do not bring near to the ion-pump wristwatches and magnetic cards 
that are susceptible to magnetic fields.