Delta Electronics VFD-E manual Daily

		Chapter 6 Fault Code Information and Maintenance
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
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	If there is any obstruction in the	Visual inspection		{
	heat sink, air intake or air outlet

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 6-11