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APPENDIX: SOME ITEMS REQUIRING ATTENTION AS FOR THE USE OF DISCHARGE LAMP
For the effective extension of the lifespan of discharge lamp, some factors impacting its lifespan are specially listed
below, based on manufacturing technology and working mechanism of discharge lamps., physical attributions of the
lamps including lamp striking theory( ignited by focused high voltage---highly pressurized air broken down and
burning---lamp on at high temperature with thermal protection--- stable running) and lamp off theory( lamp off power
---lamp off at high temperature and thermal protection-highly pressurized air vaporizing evenly----completion of lamp
off.
1. The sequence of lamp striking: Power on→lamp striking by controller(advised not to strike lamp via power on), the
sequence of lamp off: lamp off by controller→mains power shut off (advised not to turn off lamp by shutting off
mains power)
2. Within 1 min after lamp striking, it shouldn’t re-strike it frequently. ONLY more than 10 min after the projector is
cooled after lamp off, can the lamp be re-stricken again.
3. Within 5 min after lamp striking, it can’t be turned off. During the lamp striking process, it’s forbidden to turn off lamp
via shutting off mains power, but via controller. More than 5 min after the projector is cooled after lamp off, can the
mains power be shut off.
4. The projector is advised not to point to the same point for long time, i.e., it shouldn’t be used for long time at a fixed
angle.
5. The projector is advised not to use double colors for long time, i.e., it shouldn’t use 2 or more colors for long time.
6. The projector is advised not to keep shutters closed while lamp on for long time, i.e., it should be less than 1 hr after
shutters closed after lamp on.
It is advised not to use lamp half power function for long time.
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