EM330D User Manual
A Special Purpose Inverter for Hoisting
5
Maintenance and Inspection
Danger
1.
Do not touch inverter’s wiring terminals where high voltage exists.
Otherwise, an electric shock may occur.
2.
Always keep the front cover in place before power is supplied to the inverter.
Turn off power before taking the front cover off.
Otherwise, an electric shock may occur.
3.
Maintenance and check must be performed only after the power supply of main
circuit is turned off, and the indicator of CHARGE is off.
An electric shock may occur due to the residual voltage on electrolytic capacitor after
power is off.
4.
Maintenance and inspection must be performed only by authorized
professionals.
Otherwise, an electric shock may occur.
5.
Do not change the wiring and uninstall terminal wiring when power is on.
Otherwise, an electric shock may occur and the inverter will be damaged.
Caution
1.
CMOS ICs are installed on keypad, control circuit board and drive circuit board
respectively. Handle those parts and CMOS ICs carefully.
The CMOS IC can be destroyed by ESD if touched directly with bare hands.
2.
Do not check signals while the inverter is running.
Otherwise, the inverter will be damaged.
Other
Danger
1.
Never attempt to modify or alter the inverter.
Failure to comply can result in electric shock or injury.
2.
User shall take full responsibilities for the damages caused by wrong wiring,
improper operation or modifying and altering, and etc.
