quiet fans for HMI ballast

[Patryk_Rebisz]

recently i won auction for 575w LTM HMI. Alas its electronic ballast is a bit noisy due to old fan inside. I was wondering if anyone can recommend a 24v fan for 575/1200 electronic ballast.

For reference here is the auction:
http://cgi.ebay.com/ws/eBayISAPI.dl...witem=&sspagename=STRK:MEWAX:IT#ht_500wt_1096

 

[Patryk_Rebisz]

(btw, turning the ballast to 24fps doesn't help)

 

[Svart]

fans are usually spec'd in size and airflow too. It would help if you can tell us what size the fan is and what airflow it has. You'll need to open up the box and take the fan loose to see as it should be printed on the sticker on the fan.

Also, muffin fans usually don't get noisy in old age. If it sounds like whirring, you might check to make sure there are no wires or other things touching the fan blades.