Push Or Pull Muffin Fans (?)
Lesson time for Mex. Is there a difference? Some more suitable for case exhausting than others? Push air in? Pull air out? I take advantage of natural convection effect but if some fans are more ef...
Forum Discussion
Gdetrailer wrote:BFL13 wrote:
It depends on the location of the vents. If there is a lower "in" and a higher "out" then you pull in at the bottom and push out at the top. If the unit is horizontal with a vent at each end, you have a choice which is push and which is pull as long as they aren't the
same :)
OK if the question is for horizontal and you have one fan for one end, do you suck or blow? Then I am not sure. My converters are like that, but I need to check what they do.
The ones I have worked with are easy to mount the other way around, but reversing the wires as mentioned earlier is also a way.
Hmm.. COMPUTER CASE TYPE DC "muffin" fans are not "reversible" via the wiring. Do so at your own risk :E
Computer case type muffin fans are BRUSHLESS MOTORS AND ARE ELECTRONICALLY DRIVEN. The drivers are not designed to have the polarity reversed and will go up in smoke.
Now if you are talking BRUSH type DC motors, then yes you can reverse by changing polarity.. However brush type DC motors are much less efficient and put out tons of RFI noise from brush arcs.
OK thanks for the correction. I mounted mine the other way around and left the wiring as is. I got the reverse wiring idea from up-thread (wrong!) I know my RV ceiling vent fans run backwards it you swap the wires--in fact one is supposed to push or pull--you can choose by its switch.
