Operating Instructions: 1 Make sure the power supply cord and lamp lead are properly connected. Ensure the bulb is properly seated in the socket assembly. Io should be that, but not stressed. Always use a bulb central to the highest output of the ballast leg 1000w bulb/1000w ballast 600w bulbous ballast ete} Confinement ballast is not near any source of moisture or standing water Check the sealed bearing fan to confirm tis free farm any obstruction.