Daily Inspection And Periodical Inspection - Hitachi SJ100 SERIES Service Manual

8. Daily Inspection and Periodical Inspection

Inspection Item
point
Overall Ambient
Environment
Devices overall
Power supply
voltage
Main Overall
circuit
Terminal block
DC bus
capacitor
Relay
Resistors
Cooling fan
Contents
Check ambient temperature,
humidity, dust, corrosive gas, oil mist,
etc.
Check for abnormal vibrations and
noise.
Check voltage between input lines.
Check installation for looseness.
Check for evidence of over heating in
the various components
Clean
No damage
Check for leaking liquid
Check for swelling
Check for stuttering noise when
operation
Check for cracks or changes in color
Check for abnormal vibration and
noise
Check for dust
Cycle Method
daily periodic
"
"
Visual and aural
inspection
"
Measure the
voltage
between input
terminals
"
Tighten
"
Visual
inspection
"
"
Visual
inspection
"
Visual
inspection
"
Aural
inspection
"
Visual
inspection
"
-Rotate
manually while
power off
-Increase
tightening
"
Visual
inspection
Criteria Standard
replacement
period
Ambient temperature
: -10deg to 40deg,
no icing
No abnormalities.
Within its specification
Tightening torque
(except for terminal block)
M3: 0.5 - 0.6 N-m
M4: 0.98 - 1.3 N-m
No abnormalities
No abnormalities
No abnormalities
No abnormalities
- Smooth rotation 2 - 3 years
- No abnormalities
Instruments
Thermometer
Hygrometer
Tester
Tester