Replies

1. 
   P3Driver | Jan 25, 2006 02:56am | #1

   I found that on my Delta system, when I replaced my lower cloth bag with a plastic bag I lost an appreciable amount of suction due to back pressure on the discharge side of the fan.  If you think about it, you reduce the surface area of bags by half if you replace one of them with a solid plastic bag.  That means there is half the area for the air to escape as it discharges the fan so you get backpressure on the fan which limits the amount of air the fan can take in. 

   I took the plastic bag and used it for a really heavy duty trash can liner and replaced the cloth bag on my dust collection system.

2. 
   QCInspector | Jan 25, 2006 12:43pm | #2

   My dust collector came with four cheap cloth bags that didn't filter very well. I replaced them with four of the 1 µ bags and the dust collector works better because it's breathing easier. And that's the way I'm going to run it until I can set up the four filter cartridges that I got from a downdraft table from work (they switched to fire resistant cartridges, because the sparks from the metal we were grinding, set fire to them twice). But I'm not in a hurry to make the conversion since the bags are working well.