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

Users Who Are Viewing This Thread (Total: 1, Members: 0, Guests: 1)

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
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!
 

[email protected]

Well-Known Member
Review score
+0 /0 /-0
View Badges
Joined
Jul 27, 2016
Messages
968
Reaction score
1,307
Review score
+0 /0 /-0
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.
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
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 :)
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
I'll let @[email protected] 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!
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
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...
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
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?
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
Bodge a test!!!

guess which light has my custom cooling!!

A6E0119B-A383-41AB-B2E5-8050FAFF122E.jpeg
47D08316-1090-42AE-8CDD-9086EE6E9630.jpeg
 
OP
Gribbliest

Gribbliest

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 13, 2017
Messages
218
Reaction score
271
Review score
+0 /0 /-0
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. :)
 

How close to perfect, for you, is your reef aquarium?

  • IT'S PERFECT NOW

    Votes: 13 4.0%
  • It's getting close

    Votes: 50 15.3%
  • It's about half way there

    Votes: 58 17.8%
  • It's slow but progressing

    Votes: 100 30.7%
  • It's not even close

    Votes: 97 29.8%
  • Other (please explain)

    Votes: 8 2.5%
UniqueCorals.com shop rare & farmed corls
Top