Delta Electronics VFD-M manual One

Chapter 6 Fault Code Information and Maintenance

Terminals and wiring of main circuit

			Maintenance
	Check Items	Methods and Criterion		Period
Daily			Half	One
				Year	Year
	If the wiring shows change of
	color change or deformation due	Visual inspection		{
	to overheat
	If the insulation of wiring is
	damaged or the color has	Visual inspection		{
	changed
	If there is any damage	Visual inspection		{
DC capacity of main circuit
			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	If there is any leakage of liquid,
	change of color, cracks or	Visual inspection	{
	deformation
	Measure static capacity when	Static capacity ≥ initial value X 0.85		{
	required
Resistor of main circuit
			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	If there is any peculiar smell or	Visual inspection, smell
	insulator cracks due to			{
	overheating
		Visual inspection or measure with
	If there is any disconnection	multimeter after removing wiring		{
		between B1 ~ B2
		Resistor value should be within ± 10%

6-8 Revision May 2008, ME14, SW V3.04