Delta Electronics VFD-S manual „ Printed circuit board and connector of main circuit

Chapter 8 Maintenance and InspectionsVFD-S Series

„Printed circuit board and connector of main circuit

			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	If there are any loose screws and	Tighten the screws and press the		{
	connectors	connectors firmly in place.
	If there is any peculiar smell and	Visual inspection and smell		{
	color change
	If there is any crack, damage,	Visual inspection		{
	deformation or corrosion
	If there is any leaked liquid or	Visual inspection		{
	deformation in capacitors
„ Cooling fan of cooling system
			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
		Visual, aural inspection and turn the
	If there is any abnormal sound or	fan with hand (turn off the power			{
	vibration	before operation) to see if it rotates
		smoothly
	If there is any loose screw	Tighten the screw			{
	If there is any change of color due	Change fan			{
	to overheating

„Ventilation channel of cooling system

Maintenance

Period

Check Items	Methods and Criterion
		Daily	Half	One
			Year	Year
If there is any obstruction in the	Visual inspection	{
heat sink, air intake or air outlet

Revision August 2008, SE09, SW V2.61 8-5