Hitachi Microscope & Magnifier S-4800 Manual De Usuario

 

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4.3    Maintenance of Air Compressor（Only for P/N 539-9010 and 539-9060） 
 

NOTICE 
Instruments shipped to Europe area where CE marking conformity is necessary do not provide 
with the air compressor. Also instruments those shall be compliant to SEMI-S2 guideline do not 
provide with the air compressor even when shipped to outside of Europe area. 
 

4.3.1  Checkup and Maintenance 
 
Check the following items regularly. 
Before checkup/maintenance, be sure turn the main switch off.   
 

Discharge of drain 

Loosen the drain 
cock of air tank to 
discharge drain. 

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Activation of control 
devices (pressure 
gauge, pressure switch 
and safety valve) 

Check the 
working pressure 
and activated 
function. 

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Abnormal vibration and 
abnormal sound 

 

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Loose bolts, nuts and 
screws 

If loose, retighten 
them. 

 

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Contamination and 
clogging of strainer/filter 

Blow air to 
remove clogged 
substance. 

 

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Leakage through air 
valve 

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Piston ring 

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Rider ring 

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Ball bearing 

 

 

 

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Bearing

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Needle roller 
bearing 

 

 

 

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The air compressor should be drained gradually by slowly loosening the drain cocks. 
The inside of tank is at a high pressure.    So, refrain from an abrupt cock operation, 
otherwise moisture may spray out to cause a danger.