Heraeus 400 watt facial lamps

sbtan · 04-05-2005, 03:33 PM

When do you change your 400 watt facial lamps? I think they are rated at 1000 hours, but when do you change them? Do high-pressure lamps have a longer usable life?

engfant · 04-05-2005, 03:51 PM

1000hrs is too long. As soon as they are struggling to turn on toss them.

sbtan · 04-06-2005, 02:16 PM

500? 600? or even 400?, I see a drop of 20% at 400 hours but am not sure if they should be changed before 30% with the higher (or required) readings.

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04-05-2005, 03:33 PM	#1 (permalink)
sbtan Join Date: Dec 2 2003 Location: East Amherst, NY Posts: 648 Rep Power: 5	When do you change your 400 watt facial lamps? I think they are rated at 1000 hours, but when do you change them? Do high-pressure lamps have a longer usable life?

04-05-2005, 03:51 PM	#2 (permalink)
engfant FREE ENGFANTUCATION Join Date: May 20 2003 Posts: 8,742 Rep Power: 12	1000hrs is too long. As soon as they are struggling to turn on toss them.

04-06-2005, 02:16 PM	#3 (permalink)
sbtan Join Date: Dec 2 2003 Location: East Amherst, NY Posts: 648 Rep Power: 5	500? 600? or even 400?, I see a drop of 20% at 400 hours but am not sure if they should be changed before 30% with the higher (or required) readings.

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