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Author Topic: Exhaust Fan Wiring Barry Floyd Phenomenal Film Handler Posts: 1079 From: Lebanon, Tennessee, USA Registered: Mar 2000 posted 08-16-2005 03:06 PM                        I just bought a new Dayton Exhaust fan/blower for my new projection booth and I'm having a little trouble hooking up the wiring. I pulled the plate off the back of the motor and moved the spade lugs to the right positions inside the motor housing as indicated on the motor plate. The label on the outside of the motor just shows what configuration they need to be in order to run the motor clock-wise or counter-clockwise, and shows two lines + ground coming into the motor. All is wired up correctly as far as I can tell. When I applied power to the pigtail leads, it ran almost 30 seconds before it started smoking. It ain't rocket science, but I sure don't want to burn out a $200.00 fan motor by trial and error. It's a Grainger "Dayton" brand fan and motor. Anybody got a clue as how to hook up one of these things?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-16-2005 03:34 PM                     Threre should Be two terminals in ther for push on spade lugs or two nuts that you would use some crmp connectors under. On large motors I've never seen one with pig tails. Call Graingers as they have a good tech assistance hot line..... Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 08-19-2005 05:07 PM                        Barry; I suspect you have a very small blower and so Mark's comments don't seem to apply. The CORRECT blower; his remarks are dead on. Call me Monday and I will give you the correct Grainger number. (Prob. will help bulb life also, especially in Kneisleys.) Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-20-2005 10:16 AM                     There was another thread just on this subject a while back but couldn't find it so here are the correct blowers to use assuming that you can mount them indoors...... I hate those roof mounted belt drive "Mushroom" blowers...... The belts only break on the hottest summer day of the year(or during blizzard cinditions in the winter) when you have a sold out house! The Grainger 7C037 up to 1.6KW " " 7C038 up to 3KW " " 7C647 up to 7KW Just use the search engine at the grainger web site to find em. Hope this helps! Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 08-20-2005 10:32 AM                        Mark: I remember removing one of those mushroom blowers at 10 degrees on a 45% roof on ice. (We tied extension ladders to a rope thrown over the theatre and secured to my car.) The blower numbers you listed are perfect. Not only are they inside where they belong but alsothey are easily repaired in an emergency with almost any old motor....Louis  |  IP: Logged Barry Floyd Phenomenal Film Handler Posts: 1079 From: Lebanon, Tennessee, USA Registered: Mar 2000 posted 08-22-2005 02:08 PM                        Took a trip up in the attic over the weekend and pulled the model number off the motor that's already up there for screen 1. Model number is exactly the same except for the last letter. The existing motor has only 2 wires inside, 1 red, 1 black, and two bolts to mount the incoming power leads to. I guess I'll make a trip back to Nashville and swap out the new motor for the correct part number. Louis... I'm ready for that AP3 platter. I'll send you a photo of my existing MUT connections.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 10-27-2007 03:22 PM                 It has been 796 days since the last post.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 10-27-2007 03:22 PM                        OK.......now that Grainger has outsourced my favorite motor to China, what do I use?? 3 of 7 have failed since April. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 10-27-2007 10:15 PM                     I have had several fail but not in that short of time period. You can purchase just the blower housing and parts and then outsource a BB motor like I do. I think its a GE H-700 but without looking it up at the office I'm not 100% sure, am sitting in the middle of the desert right now. I believe there is only one motor available any more that is BB. We had miserable luck with the latest batch of Grainer pump motors... there are no oil holes any longer. We have since gone to another manufacurers magnetic drive pump. The "make it cheap in China" thing is certainly backfiring on many manufacturers these days . Mark  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 10-27-2007 10:50 PM                     Grainger is always my last choice for blowers since most are sleeve bearing; even with the oil holes, who remembers to do this, twice a year typical, oiling PM (or staff to do the chore). There are lamphouse manufacturers who mount these to make oiling a chore or have gravity thrust on the motor shaft. I prefer EBM Papst product, they cost more with the majority BB with a flywheel effect motor that lasts forever. The worst exhaust situation I had was a drive in theater with an inline attic type exhaust fan. The carbon soot would choke the motor 3 - 4 times a year....the owner refused to convert to a squirrel cage set up  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 10-28-2007 09:39 AM                        Thanks, Mark. Richard: I had several like that. My only consolation was that as a dealer, I made PROFIT on the replacement reflectors. My choice, however, was to have a good long life on the reflector with a proper blower. This was not to be since the customer "knew better." Louis  |  IP: Logged Bill Enos Film God Posts: 2081 From: Richmond, Virginia, USA Registered: Apr 2000 posted 10-28-2007 08:39 PM                     Anybody tried the Elicent line of inline centrifugal fans? We installed one on the exhaust of each of our Kneisley lamps, they solved the excess heat problems, move around 700 cfm, compact, and fairly quiet, all ball bearing, no pricier than the Grainger stuff listed above. In use for 2 1/2 years no issues.  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 10-28-2007 11:34 PM                     The Italian Elicent is fine. The American (Sarasota, Florida) Fantech are equal or better (EBM Papst BB flywheel rotor motor). We have many of these in operation.  |  IP: Logged Stephen Furley Film God Posts: 3059 From: Coulsdon, Croydon, England Registered: May 2002 posted 10-29-2007 02:15 AM                     quote: Barry Floyd The existing motor has only 2 wires inside, 1 red, 1 black, and two bolts to mount the incoming power leads to. What's this thing running on then? From the colours it sounds like 240V single phase. That seems a bit odd for industrial equipment; I thought that Voltage was mainly used in the home for large equipment. For this sort of thing I would have thought a three phase motor would be more likely, or if a very small motor possibly 120V single phase. What is the power rating of the motor? It's not a d.c. motor, is it?  |  IP: Logged

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