Dealing with broken or melted filaments
Make sure the lamps do not encounter serious vibration. Filaments are more brittle when hot. Even if the lamp is off and still hot, jarring it may break the filament.
When changing quartz lamps, be careful not to touch the quartz glass surface with your skin. Your skin has oils that may decrease the lamp life and/or discolor the lamp during use.
When changing, hold a quartz lamp with the paper included with the lamp.
Bulb more than 150 watts have a CYCLE time, 10 min on then 10 min off.
For more information about broken or melted filaments, contact Pacific Lamp.