Lauren F Posted March 25, 2023 Report Share Posted March 25, 2023 (edited) I recently set up and installed a new Laguna Pro-V spray booth with a (also new) 1720 CFM Dayton 4C659 tubeaxial fan (included from Laguna). The fan is ventilated outdoors via simple ductwork. However, when I turn the fan on, it is barely sucking air. Generally, these machines are quite powerful, so something seems off. Although I believe it's installed correctly, I suspect that it may be upside down, despite clear instructions on the fan and in the manual on how to orient it. Does anyone with this spray booth have any guidance on which way to orient the fan or if there is possibly something else wrong? I am hopeful that the fan is not defective and there is some quick fix that I just overlooked. Attached is a current and installation photo of the fan as well as a diagram from the manual. -Lauren Edited March 25, 2023 by Lauren F Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted March 25, 2023 Report Share Posted March 25, 2023 (edited) First idea that hits me, which model exhaust is yours and is it set up for 115 or 230v? I agree 1700 + cfm will seem to suck the chrome off a bumper. The air gets sucked out of the spray booth so if all else fails if the motor is blowing in, you will need to flip it but I believe you have it right. Motor drive side is the inlet. Now to use this you will need to let fresh air into the house somewhere. A lot of it! Edited March 26, 2023 by Bill Kielb Roberta12 and Hulk 2 Quote Link to comment Share on other sites More sharing options...
Hulk Posted March 26, 2023 Report Share Posted March 26, 2023 "...fresh air into the house somewhere. A lot of it!" Indeed; what provision for makeup air? Roberta12 1 Quote Link to comment Share on other sites More sharing options...
Lauren F Posted March 26, 2023 Author Report Share Posted March 26, 2023 I flipped the fan over today and it works perfectly. Wonder why the manual indicates otherwise…? I would still be curious if anyone else has encountered this issue. The next idea I had was to reverse the direction of the fan, which seems possible. Has anyone tried this? Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted March 26, 2023 Report Share Posted March 26, 2023 (edited) It looks like a fairly straight bladed fan, so if rotation is wrong then it will blow in the opposite direction. Sort of reversible like a ceiling fan, check rotation for sure as your original mounting should have been fine. Just from the pictures, looking straight on at the BELT END of the fan I think it would rotate counter clockwise. Looking at the BLADED ENDI believe it should rotate clockwise. The fan should have a rotation arrow on it somewhere. Edited March 26, 2023 by Bill Kielb Hulk 1 Quote Link to comment Share on other sites More sharing options...
Hulk Posted March 26, 2023 Report Share Posted March 26, 2023 Many of the images I'm finding indicate the fan is designed to blow (hence turn) in one direction. The fan label has a flow direction arrow. Lauren captured the three phase reversing instructions in the third image (the single phase instructions, however, are truncated). I'm not finding a matching doc; the one I did find addresses rotation direction thus: Lauren F 1 Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted March 26, 2023 Report Share Posted March 26, 2023 Just noticed, the rotation arrow is on the sticker on the fan. It indicates rotation I described above. Set your motor rotation to match and you should be good to go with original mounting per the instructions. Lauren F 1 Quote Link to comment Share on other sites More sharing options...
Tahoebluepottery99 Posted January 10 Report Share Posted January 10 What did you use to transition from the fan to the ducts? I just got my pro V and went to the hvac store and they had no idea. Looks like you have some sort of tape or insulation? Also did you flip the fan after the photos above? I see the arrow on the fan but it looks like that is wrong. Any advice is much appreciated! Quote Link to comment Share on other sites More sharing options...
Hulk Posted January 10 Report Share Posted January 10 Hi TahoeBlue, Welcome to the Forum! LaurenF hasn't been on the Forum since November last. You might try sending a message (which will be delivered via email); navigate to their profile page, select "message"... Looks like Lauren had found something - perhaps a sheet metal flange? - that bolts up, per the second image. ...12" fan, 13-1/2 in bolt circle diameter, search string suggestion, "12" round duct flange" ...maybe duct flanges | McMaster-Carr or 12" Flowtite Plain Duct Fitting at Menards® Gotta go to root canal appointment; I'd rather look up more flanges tho'! Bill Kielb 1 Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted January 11 Report Share Posted January 11 (edited) 6 hours ago, Tahoebluepottery99 said: What did you use to transition from the fan to the ducts? All very available HVAC ductwork parts, available stuff - For that fan You should be able to use a 12” flanged take off, 12” hard pipe duct and or 12” flex duct to isolate vibration or as needed. Steel duct attachment would be 3 screws for round rigid, worm drive clamp is easy and goof proof for the flex. Seal all seams with metalic duct tape UL181- P for rigid or UL181-FX for flex connections. Duct sealant (brush applied) is more permanent than tape but taking it apart for maintenance a bit of a pain. Advise adding a decent backdraft damper and well thought out discharge louver. Cheapest flanged take off I could spot below: The take off from the original OP appears to be a bit adapted for use (might be the photo), connection shown below, typical. Edited January 11 by Bill Kielb Hulk 1 Quote Link to comment Share on other sites More sharing options...
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