Hitachi J300U Series - Manual (Page 85)

10-4
Daily Inspection and Periodic Inspection (2/3)
Inspection cycle
Inspection
location
Inspection item Inspection content Inspection method Criteria
Standard
replacement
period
Instruments
Main
circuit Terminal board No damage. Visual inspection No abnormalities.
Smoothing
capacitor (1) Check for leaking
(2) Check for swelling
Visual inspection of
(1) and (2). No abnormalities in (1) and
(2). 5 years
(Note 1)
Relays (1) Check for stuttering noise
when operating (1) Aural inspec-
tion. (1) No abnormalities. 5 years
Regularly Periodic
Resistors (1) Check for large cracks
or changes in color (1) Visual inspection. (1) No abnormalities.
Cooling fan (1) Check for abnormal
vibrations and noise
(2) Check for dust
(1) Rotate manually
with power off
and increase
tightening
(2) Visual inspection
(1) Smooth rotation
(2) No abnormality
2 - 3 years ___
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