AV and Multimedia Related Thread, Turning off projectors during breaks and lunchtimes... in Technical; This sounds like something that would've been discussed but cant see it.
Is it better for the projector to be ...
2nd March 2012, 11:12 AM #1
Turning off projectors during breaks and lunchtimes...
This sounds like something that would've been discussed but cant see it.
Is it better for the projector to be left on over breaks (20mins and 10 mins) or lunchtimes (over an hour) or should i schedule them to go off?
2nd March 2012, 11:18 AM #2
Not sure TBH. I do know there is a primary school near my house in Preston that likes to leave one of thiers on 365 day a year (you can see the blue square on the whiteboard in the evenings during the holidays as from the road running past). Perhaps their power button is broken?
2nd March 2012, 11:24 AM #3
Off over lunchtime for sure, but a 10 min break, maybe not. And who ever leaves them on 24/7 should be sent down a salt-mine!
2nd March 2012, 11:26 AM #4
We got ours on a 1hr auto-off, so if they're being used just need to hit a button once an hour, if not it'll go off for lunchs/after school etc (Think ours is done through the panels though, not direct on projector)
Originally Posted by Little-Miss
2nd March 2012, 11:35 AM #5
I've got Epson Interactive projectors and have monitoring software which allows me to setup a schedule. Might set it up so they go off over lunch then, see how we get on.
2nd March 2012, 11:37 AM #6
I generally don't stress too much about them being on at break times but do ask staff to make sure they're off over lunch, my thoughts are that if we have a power cut during a lunch break we shouldn't be losing or damaging any bulbs because of it
2nd March 2012, 12:10 PM #7
I try and get staff to turn them off as much as i can, 45 minutes for lunch every day and 2x 10 minute breaks soon adds up
2nd March 2012, 12:22 PM #8
We get our staff to turn them off when they aren't needed and definately over lunch, I have been known to go into classrooms to turn them off if I notice it over lunch.
2nd March 2012, 12:26 PM #9
We have too many classrooms, I like to see projectors turned off over lunch in case the room isn't in use durring the afternoon.
2nd March 2012, 12:31 PM #10
i was told once by a reputable source that every strike of the lamp can knock up to 5 minutes off the overall life of the lamp. To preserve the longest lamp life, only bother turning the projector off if you are going to leave it off for more than an hour. That source also said that the energy cost involved in leaving the unit on, was almost balanced out by the reduction in lamp life and the resultant premature replacement costs.
This was however quoted for a christie venue projector, so the calculation may not quite hold true, but the sentiment is still the same.
Thanks to Oaktech from:
SimpleSi (20th March 2012)
2nd March 2012, 01:18 PM #11
worst offenders ive seen are people who walk into a room turn the projector on then dont come back in for hours
ive tried setting timeouts on em people just turn off the timeout
2nd March 2012, 01:50 PM #12
I'd say off for an empty period or lunch (an hour here) but between breaks, probably not worth it for the damage it'd cause the bulb.
over half terms though, definitely - used to do my nut in when you went back into a room at the very start of a new term and a projector was still on, the bulb 200 hours closer to death
2nd March 2012, 01:56 PM #13
Breaks I don't stress about; they're only 20 minutes and it takes more or less that long for the conventional projectors to cool down
Most of our projectors are Casio LED now and they don't require cool down. When they were installed, I made a point of showing the staff they could just be turned off and on and they do that rather then use "No show" as they do on the conventional Sanyo projectors.
I do encourage them to turn off at lunch... with mixed success. They're never left on overnight.
2nd March 2012, 02:49 PM #14
My understanding is the biggest drop in bulb lifespan is turning them off and on. Wouldn’t turning them off x2 for 10minet break per day cause the life span to drop a lot? Pretty should our projector bulbs manuals warn about turning them off then on within the same hour. Instead the manual says leave them turned on and only turn them off if they will not be used for hours.
Originally Posted by Pyroman
2nd March 2012, 02:59 PM #15
The biggest drop in lifespan is the number of hours the projector is used... and unless I clamped down they would be switched on 24/7
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