Delta Electronics VFD-VL manual Maintenance and Inspections, One

Chapter 6 Fault Code Information and Maintenance

6.2 Maintenance and Inspections

Before the check-up, always turn off the AC input power and remove the cover. Wait at least 10 minutes after all display lamps have gone out, and then confirm that the capacitors have fully discharged by measuring the voltage between DC+ and DC-. The voltage between DC+ and DC- should be less than 25VDC.

„Ambient environment

			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	Check the ambient temperature,	Visual inspection and measurement
	humidity, vibration and see if
		with equipment with standard	{
	there are any dust, gas, oil or
		specification
	water drops
	If there are any dangerous	Visual inspection	{
	objects
„	Voltage
			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	Check if the voltage of main	Measure with multimeter with standard
	circuit and control circuit is		{
	correct	specification
„	Keypad
			Maintenance
	Check Items	Methods and Criterion		Period
			Daily	Half	One
				Year	Year
	Is the display clear for reading	Visual inspection	{
	Any missing characters	Visual inspection	{

Revision Nov. 2008, VLE1, SW V1.03 6-11