Hitachi J300U Series Instruction Manual page 85

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