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Author Topic: P35GPS AT muffin fan direction Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 03-19-2012 06:26 PM                     The fan at the bottom of the unit - it's completely symmetrical, so the question - is it supposed to be mounted to draw air down the air column from the top and *out* the bottom, or push air up the air column *from* the bottom and out the top?  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 03-19-2012 06:32 PM                     The answer young paduan lies in the physics of heat flow...think about it and the answer find you will.  |  IP: Logged Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 03-19-2012 06:46 PM                     Okay. Up. Just wasn't sure about how the construction might push (allow) dust, hairs, and other contaminants to be blown into the aperture and potentially damage prints. Could have been constructed the other way if the structure dictated... Odd that there's no filter in the path, HEPA or otherwise...  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 03-20-2012 12:19 AM                     Must be a different kind of chassis, for I've seen 4inch cage fans mounted below to push air up through the assembly. Early P35's had small 3inch muffins mounted on top of the chassis to pull heat out.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 03-20-2012 09:39 AM                        Must have been 30+ variations on that projector. I gave up trying to get/keep all the manuals. Louis  |  IP: Logged

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