Hitachi L100 사용자 설명서

L100 Inverter

T

roub

leshooting

and Maintenance

The life of a capacitor is affected by the ambient temperature. See 

The inverter must be cleaned periodically. If dust accumulates on the fan and 
heat sink, it can cause overheating of the inverter.

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

Use Ohm meter to 
check braking resistors

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