Need to cool my Mitras a little more....

[Gribbliest]

So I was doing some upgrades on my GHL equipment yesterday, and noticed that my Mitras LX7206 were brighter after being off for a minute or two...

Turns out they are clearly throttling based on temperature. (Happy about this... it's a good thing!).

So I got a big room fan and pointed it at one of my fixtures....

I saw the current usage (on Powerbar) go from 1.05A to 1.45A in a few minutes - around 35% increase. My PAR meter is on loan, but I will measure the impact of that as soon as I get it back later this week.

So, I need to add some additional airflow around the fixtures and wondered if anyone has come up with a solution for this already. In the first instance I think I'll try a ceiling fan in the room as it might move enough to make a difference, but interested in other options too!

 

[Vinny@GHLUSA]

The max allowed limit for the LX7 is 65°C.

If the fixture temperature goes above this, the LEDs will automatically dim themselves to prevent further heat build-up. Optimal cooling for the fixture is when the fans are set to 100% and kept in a room between 66 - 68°F.

 

[Gribbliest]

The max allowed limit for the LX7 is 65°C.

If the fixture temperature goes above this, the LEDs will automatically dim themselves to prevent further heat build-up. Optimal cooling for the fixture is when the fans are set to 100% and kept in a room between 66 - 68°F.

Thanks Vinny - that's the conclusion I'd come to. Going to attempt a bit more airflow around the fixtures and see if I can't get a bit more output

 

[Conor_K]

I’m in the same boat.
@Vinny@GHLUSA, can the Breeze fans be programmed to react to mitras temps through the controller/P4??

 

[Gribbliest]

I'll let @Vinny@GHLUSA reply, but I don't believe you can get the temps from the Profilux. Given I know when the temp is going to be higher based on the light profile, I figure I can just run some fans at the appropriate time of day!

 

[Gribbliest]

So I put a ceiling fan in the room and within 5 minutes saw the power consumption up by ~16% at peak output.

Will see what that equates to in PAR once I get my PAR meter back.

I think I can achieve more with dedicated cooling over the light fixtures...

 

[Vinny@GHLUSA]

The breeze fans would not know the internal temperature of the LX7 fixtures. If you choose to use the fans, they can be programmed through the ProfiLux to run on a TIMER using the same schedule as the lights.

 

[Gribbliest]

Do you know what noise level they run at sir? I was considering 120mm computer fans, but like the design of the breeze fans...

What’s the MTBF on those?

also, can I have the Mitras connected to WiFi at the same time as being controlled by my P4?

 

[Gribbliest]

Bodge a test!!!

guess which light has my custom cooling!!

 

[Gribbliest]

OK, So I've mounted a 120mm fan above each of my 4 Mitras, and now I am seeing them pull 1.45 to 1.5A at peak, with temperature sitting at 45-49C.

Expecting to get my PAR meter back in the next day or two and will update with the impact to PAR output.

 

[Gribbliest]

And the results are in...

56% greater PAR with the 120mm fan mounted above the light fixture!!!