Delta Electronics VFD-VL manual Main circuit Maintenance Check Items Methods and Criterion

Chapter 6 Fault Code Information and Maintenance
„		Mechanical parts
				Maintenance
		Check Items	Methods and Criterion		Period
				Daily	Half	One
					Year	Year
		If there is any abnormal sound	Visual and aural inspection		{
		or vibration
		If there are any loose screws	Tighten the screws		{
		If any part is deformed or	Visual inspection		{
		damaged
		If there is any color change by	Visual inspection		{
		overheating
		If there is any dust or dirt	Visual inspection		{
„	Main circuit
				Maintenance
		Check Items	Methods and Criterion		Period
				Daily	Half	One
					Year	Year
		If there are any loose or missing	Tighten or replace the screw	{
		screws
		If machine or insulator is	Visual inspection
		deformed, cracked, damaged or
			NOTE: Please ignore the color		{
		with color change due to
			change of copper plate
		overheating or ageing
		If there is any dust or dirt	Visual inspection		{

„Terminals and wiring of main circuit

		Maintenance
Check Items	Methods and Criterion		Period
		Daily	Half	One
			Year	Year
If the terminal or the plate is
color change or deformation due	Visual inspection		{
to overheat
If the insulator of wiring is	Visual inspection		{
damaged or color change
If there is any damage	Visual inspection	{

6-12 Revision Nov. 2008, VLE1, SW V1.03