LumberJocks

You Can't Have it Both Ways!

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Rhinoc posted 02-07-2017 06:15 PM 755 views 0 times favorited 18 replies Add to Favorites Watch
View Rhinoc's profile

Rhinoc

5 posts in 1223 days


02-07-2017 06:15 PM

I have a HF DC that is sucking and blowing at the same time. Sounds impossible but at the inlet, the suction part of it is very weak but the blowing part is quite strong. I thought this was impossible but then again, it’s a HF. It was working fine one day and then it lost most of it’s suction. Anyone have any helping ideas other than buying something else?

I have it routed into a Dust Deputy XL Cyclone and vented outside so there is no filter.

-- If you don't want people to get your goat, don't tell em where it's tied.


18 replies so far

View sawdustdad's profile

sawdustdad

335 posts in 725 days


#1 posted 02-07-2017 06:23 PM

Air leaks somewhere.

-- Murphy's Carpentry Corollary #3: Half of all boards cut to a specific length will be too short.

View Rhino690's profile

Rhino690

5 posts in 506 days


#2 posted 02-07-2017 07:26 PM

An air leak will reverse the flow of air?

View Fred Hargis's profile

Fred Hargis

4769 posts in 2333 days


#3 posted 02-07-2017 07:28 PM

Check to see if the impeller has moved on the shaft. I’ve seen this screw up an axial fan type blower…might do it with an impeller. I guess at some point it was working correctly, and this just started?

-- Our village hasn't lost it's idiot, he was elected to congress.

View Rhino690's profile

Rhino690

5 posts in 506 days


#4 posted 02-07-2017 07:29 PM

Did I even install it properly? Turn the picture.

View MrRon's profile

MrRon

4497 posts in 3083 days


#5 posted 02-07-2017 08:06 PM

It all appears to be hooked up correctly. I think the hose leading the blower to the outside is blocked and maybe the impeller has come loose.

View ArtMann's profile

ArtMann

691 posts in 656 days


#6 posted 02-07-2017 08:51 PM

Another Apple iphone picture?

View Fred Hargis's profile

Fred Hargis

4769 posts in 2333 days


#7 posted 02-07-2017 08:57 PM

You did, the inlet is in the center of the blower housing, and the outlet is what you have piped to the wall.

-- Our village hasn't lost it's idiot, he was elected to congress.

View sawdustdad's profile

sawdustdad

335 posts in 725 days


#8 posted 02-07-2017 09:35 PM

1.) You didn’t by any chance rewire the motor did you? Could it be running backwards or running on 120V when it’s supposed to be 240V? (wired as 240V with 120V service?).

Air in = air out. That’s physics.

2.)Either you are underestimating suction flow, or over estimating exhaust flow. Remember, if the inlet is 5 or 6 inches in dia, the air velocity will be much less than exiting air through a 4 inch hose.

3.)If they are both the same size, see reason one or two.

-- Murphy's Carpentry Corollary #3: Half of all boards cut to a specific length will be too short.

View Rhino690's profile

Rhino690

5 posts in 506 days


#9 posted 02-07-2017 10:19 PM

Ok, I’ll check it when I get home. It’s just really strange. It’s blowing air upwards towards the motor.

View Rhino690's profile

Rhino690

5 posts in 506 days


#10 posted 02-07-2017 10:22 PM

I didn’t rewire it either. I’ll also check the discharge hose.

View Rhino690's profile

Rhino690

5 posts in 506 days


#11 posted 02-07-2017 10:33 PM

Does the dust container have to have an airtight seal to the dust deputy? In the picture you’ll see a piece of plywood attached to the deputy. I routered a circular trench in thr plywood to match the lip of the dust container but didn’t silicone it as it has to be periodically emptied. No bungy cords either.

View Carloz's profile

Carloz

989 posts in 431 days


#12 posted 02-07-2017 10:55 PM

I do not know about the motor in HF dust collector, but in order to mount the motor vertically it must have special bearings such as deep-groove ball bearings, angular-contact ball bearings etc.
Most probably the dust collector motor has regular radial bearings that must be used horizontally.


Did I even install it properly? Turn the picture.

- Rhino690


View shipwright's profile

shipwright

7783 posts in 2638 days


#13 posted 02-08-2017 12:07 AM

Dust deputy doesn’t work on its side. Try setting it up like this.

Seriously though, it looks right except that the exhaust hose is very long and could be reducing air volume.
Air out determines how much air can be sucked in so I think you would have better results if you could rotate the fan unit and blow it directly through the wall instead of through five or six feet of curving hose.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

View TheFridge's profile

TheFridge

8336 posts in 1326 days


#14 posted 02-08-2017 12:21 AM

I’ve have mine on it’s side for awhile without any problems

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View gmakra's profile

gmakra

5 posts in 431 days


#15 posted 02-08-2017 02:01 PM

Bet ya have a plug of debris on the discharge side someplace.

showing 1 through 15 of 18 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com