Frequent failure of D20s

Rick,

We have found sites likes to go back in after install and up the wattage of their house lights.  So a 60watt lamp x 20 fixtures become a 100 watt lamp x 20 fixtures plus a few hundred feet of wiring, and then they dim them at 10% for days on end = melted modules.

Seth

Rick,

We have found sites likes to go back in after install and up the wattage of their house lights.  So a 60watt lamp x 20 fixtures become a 100 watt lamp x 20 fixtures plus a few hundred feet of wiring, and then they dim them at 10% for days on end = melted modules.

Seth

Rick,

There are many things that could be causing this including:

- Not enough cooling in the racks due to clogged filters, too hot in the room, grease-covered modules [when installed above fryers], etc.

- Nearby lightning strike which could have even happened months or years ago.

- Bad run of cubes.

If you can get them to tell you what the four digit number is from the power cube on the dimmer module, I can tell you if that may be a bad production run.

Let me know,

David

David,

Exactly the sort of info I was looking for! I'll see about getting lot numbers!

Cooling issues aren't likely. Lightning is definately an issue, but very hard to track or prevent.

Thanks

I had two d20 power cubes go bad in late spring of this year a few months past warranty (My system was energized in Late January 2008). They were in my Unison Houselight rack. One was on a circuit that is on most of the time (We have to keep a this circuit at a 25% glow for safety reasons when not in the building, it's 1070w when @ Full), but the other was a normal houselight circuit (1200w) that is only used for shows and when the house is being cleaned. I don't want to keep having to buy power cubes down the road, so I was thinking I may start to rotate the d20's every once in a while. Any other suggestions?