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Jet shop filter ok to run without filters?
Probably a stupid question, but... Is there any reason that running it as a
"fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
"mac davis" wrote in message ... Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing The biggest problem that I see is that "you" would be breathing more dust. |
Jet shop filter ok to run without filters?
"mac davis" wrote in message
... Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? I'd be concerned about protecting the motor and bearings. The slight gain in CFM without the filter likely won't make a worthwhile or noticeable difference. I have a washable filter, so fo me, it would not be a hardship. |
Jet shop filter ok to run without filters?
On Feb 7, 1:16*pm, "Leon" wrote:
"mac davis" wrote in message ... Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop.... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings... I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing The biggest problem that I see is that "you" would be breathing more dust.. If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? |
Jet shop filter ok to run without filters?
In article 36823a16-66f8-41df-bb94-347e5a6a4104
@l16g2000yqo.googlegroups.com, says... If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? The original question suggesta that he wants to use it like a ceiling fan to circulate the higher, warmer stratum of air throughout the shop. |
Jet shop filter ok to run without filters?
"phorbin" wrote in message
... In article 36823a16-66f8-41df-bb94-347e5a6a4104 @l16g2000yqo.googlegroups.com, says... If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? The original question suggesta that he wants to use it like a ceiling fan to circulate the higher, warmer stratum of air throughout the shop. Isn't that what it does by default? |
Jet shop filter ok to run without filters?
On Feb 8, 11:31*am, phorbin wrote:
In article 36823a16-66f8-41df-bb94-347e5a6a4104 @l16g2000yqo.googlegroups.com, says... If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? The original question suggesta that he wants to use it like a ceiling fan to circulate the higher, warmer stratum of air throughout the shop. Looking ahead to summer and was going to put an exhaust fan in the shop.... Thinking of venting the Jet to the outside instead. That is what I got out of mac's question..... |
Jet shop filter ok to run without filters?
"Robatoy" wrote in message ... On Feb 7, 1:16 pm, "Leon" wrote: .. If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? Well maybe. It will be vented outside but that vented air has to be replaced and outside air may bring in more dust than what may only be floating around inside. Eventually inside filtered air will clear out with filters. Dusty outside air is limitless. That said, I don't use an air filter at all as I most often work with an open garage door and the breeze through there would probably limit the effectiveness of a room air filter. |
Jet shop filter ok to run without filters?
On Sat, 7 Feb 2009 12:16:44 -0600, "Leon" wrote:
"mac davis" wrote in message .. . Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing The biggest problem that I see is that "you" would be breathing more dust. Not sure why, Leon.. The air going into the filter wouldn't be recirculated into the shop, it would go outside.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Sun, 8 Feb 2009 11:31:27 -0500, phorbin wrote:
In article 36823a16-66f8-41df-bb94-347e5a6a4104 , says... If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? The original question suggesta that he wants to use it like a ceiling fan to circulate the higher, warmer stratum of air throughout the shop. Nope.. vented outside... I'm thinking of ducting it about 5' to a dryer vent type setup in the wall.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Sun, 8 Feb 2009 15:31:04 -0600, "Leon" wrote:
"Robatoy" wrote in message ... On Feb 7, 1:16 pm, "Leon" wrote: . If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? Well maybe. It will be vented outside but that vented air has to be replaced and outside air may bring in more dust than what may only be floating around inside. Eventually inside filtered air will clear out with filters. Dusty outside air is limitless. That said, I don't use an air filter at all as I most often work with an open garage door and the breeze through there would probably limit the effectiveness of a room air filter. Good thought, Leon.. hadn't occurred to me about replacing the air.. In my case, outside air isn't an option, as this setup would be when it's WAY too hot and humid to work outside.. My shop is actually a large room in the house, so I guess I'd be drawing replacement air from the great room, which is a lot cooled than the shop.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Sat, 7 Feb 2009 13:39:48 -0600, "MikeWhy" wrote:
I'd be concerned about protecting the motor and bearings. The slight gain in CFM without the filter likely won't make a worthwhile or noticeable difference. I have a washable filter, so fo me, it would not be a hardship. My concern also, Mike.. Do you think the outer filter would protect the motor? I'm thinking that the main increase in CFM would be by removing the inner filter.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
"mac davis" wrote in message
... On Sat, 7 Feb 2009 13:39:48 -0600, "MikeWhy" wrote: I'd be concerned about protecting the motor and bearings. The slight gain in CFM without the filter likely won't make a worthwhile or noticeable difference. I have a washable filter, so fo me, it would not be a hardship. My concern also, Mike.. Do you think the outer filter would protect the motor? I'm thinking that the main increase in CFM would be by removing the inner filter.. Compared to not using a filter, for sure. ;) The static pressure on the inner bag filters is pretty large. Mine are ripping away from their attachment points on the frame. However, even this much seems small compared to losses ducting it into a dryer vent hose, as I read you mention elsewhere. A powered exhaust vent set into the wall might do just as well. Maybe move the air cleaner close to and pointed at the vent, and whatever makes it out will be good enough. You might also consider venting the DC outside, but that has its own set of problems. |
Jet shop filter ok to run without filters?
"mac davis" wrote in message In my case, outside air isn't an option, as this setup would be when it's WAY too hot and humid to work outside.. My shop is actually a large room in the house, so I guess I'd be drawing replacement air from the great room, which is a lot cooled than the shop.. mac And then the great room air is replaced with hot air from outside. If you are paying to run an AC, it may run into quite the expense. |
Jet shop filter ok to run without filters?
"mac davis" wrote in message ... Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing Concerning longetivity of the motor and bearings, do you have a regular fan in the shop? Is it holding up OK? I would not be concerned, myself. |
Jet shop filter ok to run without filters?
Leon wrote:
Concerning longetivity of the motor and bearings, do you have a regular fan in the shop? Is it holding up OK? I would not be concerned, myself. If it has sealed ball bearings, yeah; brass bushings, no. -- Free bad advice available here. To reply, eat the taco. http://www.flickr.com/photos/bbqboyee/ |
Jet shop filter ok to run without filters?
Leon wrote:
"mac davis" wrote in message ... Probably a stupid question, but... Is there any reason that running it as a "fan" can hurt or make it less effective.. Looking ahead to summer and was going to put an exhaust fan in the shop... Thinking of venting the Jet to the outside instead... It's ceiling mounted and should pull the hot air off the (10') ceilings.. I can't think of how removing the filters could hurt it.. Just more air flow, right? Would it be better to leave the outer filter on, to keep dust out of the fan, or would the dust just blow on through? thanks, mac Please remove splinters before emailing Concerning longetivity of the motor and bearings, do you have a regular fan in the shop? Is it holding up OK? I would not be concerned, myself. I'm a little late coming into this thread but one thing to watch for is motor overload, the less resistance and higher cfm will load the motor to a greater level. basilisk |
Jet shop filter ok to run without filters?
On Mon, 9 Feb 2009 12:23:17 -0500, phorbin wrote:
In article , says... On Sun, 8 Feb 2009 11:31:27 -0500, phorbin wrote: In article 36823a16-66f8-41df-bb94-347e5a6a4104 , says... If he vents it to the outside, the dust should be blown out with the hot air.... rather than some of it recirculating back into the shop. No? The original question suggesta that he wants to use it like a ceiling fan to circulate the higher, warmer stratum of air throughout the shop. Nope.. vented outside... I'm thinking of ducting it about 5' to a dryer vent type setup in the wall.. OK, so you want to move the hot air out... I'd wonder if this would create low pressure inside which would draw outside hot, humid air in through doors, windows and/or chimneys depending on how air tight your house is. I don't think it would.. 2 year old house with a lot of insulation and double pane windows.. I'm thinking that it might draw some of the cool air from the great room, though.. That's a factor, as I figure that when using the filter vented to the outside, I won't be using the AC in the shop.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Mon, 9 Feb 2009 22:08:14 -0500, "Ed Pawlowski" wrote:
"mac davis" wrote in message In my case, outside air isn't an option, as this setup would be when it's WAY too hot and humid to work outside.. My shop is actually a large room in the house, so I guess I'd be drawing replacement air from the great room, which is a lot cooled than the shop.. mac And then the great room air is replaced with hot air from outside. If you are paying to run an AC, it may run into quite the expense. Well, we're lucky enough to not have to be too concerned with the expense, Ed.. Last year we ran the master bedroom AC 24/7 all summer, the shop AC about 12 hours a day and the great room unit when we had folks over, and our highest bill in 2 years was a little under $250 a month.. After a lifetime in California, we can live with that, for sure.. That would be our LOWEST bill in a lot of years, there.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Mon, 9 Feb 2009 13:47:04 -0600, "MikeWhy" wrote:
Compared to not using a filter, for sure. ;) The static pressure on the inner bag filters is pretty large. Mine are ripping away from their attachment points on the frame. However, even this much seems small compared to losses ducting it into a dryer vent hose, as I read you mention elsewhere. A powered exhaust vent set into the wall might do just as well. Maybe move the air cleaner close to and pointed at the vent, and whatever makes it out will be good enough. You might also consider venting the DC outside, but that has its own set of problems. Good point... I'm looking at using a table saw DC fitting, which just covers the grill on the exhaust side, and running about 30" of 4" DC hose to the dryer vent, which would be near the ceiling.. We were originally going to use a bathroom type vent unit, but the hassle of running power to it just isn't worth it.. I'm thinking that the advantage of the Jet unit over the wall unit is that it's in the middle of the room, mounted on the ceiling and that it's already there.. (yeah, my middle name is either Lazy) mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Tue, 10 Feb 2009 08:41:02 -0600, "Leon"
wrote: Concerning longetivity of the motor and bearings, do you have a regular fan in the shop? Is it holding up OK? I would not be concerned, myself. Well, I've had a 10" box fan from Wally World running in a shop window for most of 2 years and it's getting a tad noisy.. lol mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
On Wed, 11 Feb 2009 22:54:30 -0600, basilisk wrote:
I'm a little late coming into this thread but one thing to watch for is motor overload, the less resistance and higher cfm will load the motor to a greater level. basilisk AHHHH.... That's sort of the question that was hiding in the back of my mind when I asked if it could harm the unit! Brings to mind the folks that put low resistance mufflers on their cars and lose the back pressure that the engine might need.. mac Please remove splinters before emailing |
Jet shop filter ok to run without filters?
"mac davis" wrote in message ... On Wed, 11 Feb 2009 22:54:30 -0600, basilisk wrote: I'm a little late coming into this thread but one thing to watch for is motor overload, the less resistance and higher cfm will load the motor to a greater level. basilisk AHHHH.... That's sort of the question that was hiding in the back of my mind when I asked if it could harm the unit! Brings to mind the folks that put low resistance mufflers on their cars and lose the back pressure that the engine might need.. It's difficult to say without the fan curve to look at. For a finely tuned, engineered system, that may be so. I think that's hardly the case for "generic" air cleaners. Removing the static loss from the filter flattens the system curve, shifting the operating point lower and to the right: lower static pressure and higher cfm. Assuming constant speed and efficiency, power draw will be higher; the fan laws relate power to the cube of cfm. However, the squirrel cage likely is running higher on its efficiency curve at the lower static point. I doubt the small increase in power places the motor in any danger of burning out. But, again, it's difficult to say without looking at the fan and system curves. If that's a concern at all, my Jet filter has 3 speed settings. Just avoid using the highest setting. |
Jet shop filter ok to run without filters?
On Thu, 12 Feb 2009 12:32:09 -0600, "MikeWhy" wrote:
It's difficult to say without the fan curve to look at. For a finely tuned, engineered system, that may be so. I think that's hardly the case for "generic" air cleaners. Removing the static loss from the filter flattens the system curve, shifting the operating point lower and to the right: lower static pressure and higher cfm. Assuming constant speed and efficiency, power draw will be higher; the fan laws relate power to the cube of cfm. However, the squirrel cage likely is running higher on its efficiency curve at the lower static point. I doubt the small increase in power places the motor in any danger of burning out. But, again, it's difficult to say without looking at the fan and system curves. If that's a concern at all, my Jet filter has 3 speed settings. Just avoid using the highest setting. Yep... I'm guessing that you could just take the "squirrel cage" fan out of the filter and run it without problems.. Part of the reason for removing the filter is to not need to run it on anything but low (1 of 3) speed.. mac Please remove splinters before emailing |
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