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Question about shop fox 1.5 hp dust collector

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Forum topic by Eugd posted 07-14-2016 04:26 PM 387 views 0 times favorited 9 replies Add to Favorites Watch
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Eugd

65 posts in 573 days


07-14-2016 04:26 PM

I recently purchased the unit and did my first emptying of the debris bag and the top bag, I have the 2 Micron bag, I made sure I shook out the top bag thoroughly. since my emptying, the top bag unit doesn’t inflate barely at all, it used to inflate fully now no moment I start the unit now it doesn’t fully however I feel that at all. The bottom unit has air blowning into it and suction and air flow has not changed, it appears to be working besides that, I checked the hose and no obstacles, the top and bottom are securely attached, in the hose that I’m using I’m using the Rockler Quick Connect? I’m planning to upgrade to a Wynn filter in the upcoming month and put in a debris separator bucket in between the unit, Any suggestions would be greatly appreciated,


9 replies so far

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pintodeluxe

4853 posts in 2275 days


#1 posted 07-14-2016 04:59 PM

Are you using the stock lower bag, or plastic bags?
Does the motor sound normal? Does it start slowly?

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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Eugd

65 posts in 573 days


#2 posted 07-14-2016 05:23 PM

Stock bag was half full at the time I emptied it out, reused the bag after dumping out the contents, no holes in the bag, reattached the stock bag, afterwards and the motor sounds the same, starts quickly and stops when turned off, the suction feels strong when I put my hand on the hose, the hose is a 10 foot antistatic hose I use to hook up to the table saw/miter saw/router table, im planning on hooking up some sewer Pvc pipes with blast gates in the upcoming year but want to start with the unit and filter updates, just got the unit a month ago and no problems before the cleanup

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pintodeluxe

4853 posts in 2275 days


#3 posted 07-14-2016 05:50 PM

Your bag filter probably needs to be cleaned. It doesn’t have to be sparkling clean, but needs to have the dust cake knocked off periodically with a broom or compressed air.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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Eugd

65 posts in 573 days


#4 posted 07-14-2016 05:55 PM

I did that, turned it inside out and vigorous shook it outdoor with a respirator on the again outside out then reinstalled, got all the gunk out of it, afterwards it’s not inflating?

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pintodeluxe

4853 posts in 2275 days


#5 posted 07-14-2016 06:02 PM

Not sure then. Restricted airflow from a fitting etc, problem with motor like start cap / run cap?

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View JBrow's profile

JBrow

818 posts in 382 days


#6 posted 07-15-2016 02:31 AM

Eugd,

Assuming the motor and impeller are working properly, it seems to me that the problem is either a leak in the dust collector or an obstruction before the impeller.

An obstruction is perhaps the easiest to eliminate. Disconnecting the dust collection hose(s) from the dust collector and ensuring both 4” ports are open should cause the upper bag to fully inflate if the problem is an obstruction. If the upper filter bag fully inflates after removing the dust collection hose(s), then reconnecting the dust collection hose(s) can confirm the problem is an obstruction. If the upper filter fails to fully inflate after reconnecting the dust collection hose, then an obstruction is confirmed.

An obstruction can take two forms. The first is an object blocking air flow in the dust collection hose. The other, more subtle, obstruction is excessive static pressure. Long runs of flex hose, a large number of bends, turns, and/or tight turns all increase static pressure and thus reduce air flow.

The second possible explanation for an under inflated filter bag could be leaks within the dust collector itself. Possible locations for such leaks are a loosely connected hose from the impeller to the bag-holding assembly, loose fitting upper and/or lower bags, or a hole somewhere in the system. It strikes me that since the unit worked fine before emptying and cleaning the bags, a leak is most likely. A smoke pencil puffer stick is one way to check for leaks.

While leaks in fittings, such as Quick Connect fitting can adversely affect dust collection performance, leaks before the impeller are unlikely to prevent the filter from fully inflating. The filter bag only needs air forced into it no matter the source of the air. Therefore, whether from the open end of the dust collection hose or from around a leaky fitting connected to a dust collection hose, the air needed to inflate the filter bag will find its way to the filter bag.

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Eugd

65 posts in 573 days


#7 posted 07-15-2016 05:00 PM

Checked all of that and still not inflating property, I’m going to call shop for today

View joey502's profile

joey502

487 posts in 980 days


#8 posted 07-15-2016 05:20 PM

Once the cake builds back in the top bag it will inflate all the way again. By cleaning it out it is allowing more air to flow through it. The build up restricts some air flow but does improve filtration.

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Eugd

65 posts in 573 days


#9 posted 07-15-2016 06:05 PM

Called Woodstock international and they said it’s the bag, the newer 2.5 micron bags have a problem of being extra clogged, so they are sending me out a different 2.5 micron bag made of a different material, thanks for all of your help and support, makes me want to order the Wynn filter sooner than later

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