Hitachi L200 Manual Do Utilizador

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L200 Inverter
T
roub
leshooting
and Maintenance
6–9
Maintenance and Inspection
Monthly and Yearly Inspection Chart
Note 1:
The life of a capacitor is affected by the ambient temperature. See 
Note 2:
The inverter must be cleaned periodically. If dust accumulates on the fan and 
heat sink, it can cause overheating of the inverter.
Item Inspected
Check for...
Inspection Cycle
Inspection 
Method
Criteria
Month
Year
Overall
Ambient 
environment
Extreme
temperatures
& humidity
Thermometer, 
hygrometer
Ambient temperature 
between -10 to 40°C, 
non-condensing
Major devices
Abnormal 
noise & vib.
Visual and aural
Stable environment for 
electronic controls
Power supply 
voltage
Voltage 
tolerance
Digital volt meter, 
measure between 
inverter terminals 
[L1], [L2], [L3]
200V class:
200 to 240V 50/60 Hz
400V class:
380 to 460V 50/60 Hz
Main 
circuit
Ground
Insulation
Adequate 
resistance
Digital volt meter, 
GND to terminals
5 Meg. Ohms or greater
Mounting
No loose 
screws
Torque wrench
M3: 0.5 – 0.6 Nm
M4: 0.98 – 1.3 Nm
M5: 1.5 – 2.0 Nm
Components
Overheating
Thermal trip events No trip events
Housing
Dirt, dust
Visual
Vacuum dust and dirt
Terminal block Secure 
connections
Visual
No abnormalities
Smoothing 
capacitor
Leaking, 
swelling
Visual
No abnormalities
Relay(s)
Chattering
Aural
Single click when 
switching ON or OFF
Resistors
Cracks or 
discoloring
Visual
Check Ohms of 
optional braking res.
Cooling fan
Noise
Power down, 
manually rotate
Rotation must be 
smooth
Dust
Visual
Vacuum to clean
Control 
circuit
Overall
No odor, 
discoloring, 
corrosion
Visual
No abnormalities
Capacitor
No leaks or 
deformation
Visual
Undistorted appearance
Display LEDs
Legibility
Visual
All LED segments work