replacing extruder fan on 301
Posted: Thu Jan 26, 2017 12:25 pm
Hi,
Whilst checking the 301 hotend for clogging I managed to break one of the blades on the top mounted fan. The stock fan has the sticker 'GEEETECH' and is rated at 0.09 amp @ 12v. It didn't provide much airflow anyway.
I've taken a 'SanAce 40' dual fan [1] from some old rackmount server and split it into half. I mounted the larger of the 2 fans onto the hotend. It actually has a decent amount of airflow compared to the original.
My questions are:
a) the new fan has a current draw of about 0.6 amp (measured from lab power supply at 12 volt). Is that too much for the controller board?Would the thinner of the pair of the 2 fans (rated about 0.35 amp) be safer for the control board?
b) what are the gcodes for adjusting the pwm speed of this fan? How do I read the current speed?
Regards,
Marco
[1] http://www.newark.com/sanyo-denki-sanac ... dp/96M1711
Whilst checking the 301 hotend for clogging I managed to break one of the blades on the top mounted fan. The stock fan has the sticker 'GEEETECH' and is rated at 0.09 amp @ 12v. It didn't provide much airflow anyway.
I've taken a 'SanAce 40' dual fan [1] from some old rackmount server and split it into half. I mounted the larger of the 2 fans onto the hotend. It actually has a decent amount of airflow compared to the original.
My questions are:
a) the new fan has a current draw of about 0.6 amp (measured from lab power supply at 12 volt). Is that too much for the controller board?Would the thinner of the pair of the 2 fans (rated about 0.35 amp) be safer for the control board?
b) what are the gcodes for adjusting the pwm speed of this fan? How do I read the current speed?
Regards,
Marco
[1] http://www.newark.com/sanyo-denki-sanac ... dp/96M1711