Now you've got me thinking about dust extraction.

[gasmansteve]

The Aircap 3 uses the same filters as the Powercap Pete the screw in type and are interchangable and the impact protection is the same. I think you tried my Aircap 3 on at the bash Tom what did you think ??. I wouldnt be without it now and can wear it for hours without knowing I`ve got it on. The Trend one is supposed to be good but when I tried it on I thought it too heavy and when the lass in the shop said you haven`t got the battery in it yet that did it for me :?
Steve

 

[wizer]

ah yes Steve it was yours wasn't it. Yes it was much more acceptable.

Chas, if your reading. Did you contact JSP about their filtration level? I assume it's not possible to upgrade the filters to P2 or P3?

 

[CHJ]

Chas, if your reading. Did you contact JSP about their filtration level? I assume it's not possible to upgrade the filters to P2 or P3?

Tom it's not the filters that are the problem with improving the spec.

The rating (En12941:1998-1999) for a powered hood mask is all about the fit of the mask and its ability to guarantee that no dust gets drawn back into the face area when the battery runs down or when you take a deep breath.

EN 12941:1998 Powered filtering device with helmet / hood
TH - turbo hood 1, 2 or 3 - inward leakage class (10%, 2% or 0.2%)
P - for use against particles + S or SL - use against solids only or solids and liquids.

No matter how good the actual filters are the face-head seals and the level of the airflow remain the same. I believe the electronic warning of low battery in the Trend which occurs long before the flow drops off goes a long way to meeting the higher rating.

The pack literatures that state filter spec. are a bit misleading as they are actually Mask specs.


Powercap IP 570 gram
Battery pack 310 gram
Filters En12941:1998 TH 1 P (SL)
Eye impact EN166:1995 1 3 B

.....


Trend Airshield pro.920 gram (1115 gram total in use)
Battery pack 195 gram
Filters En12941:1999 TH 2 P
Eye impact EN166:2002 1 3 B

 

[matt]

Based on what little I know about the filter standards and the JSP type masks is that under heavy workload (as in you, not the mask) the mask can slip in to negative pressure. This must mean that you're potentially taking in particles via what would normally be the outlet, which appears to be the inevitable gaps around the face.

EN143 (i.e. P1, P2, P3) does not measure inward leakage. P2's filter performance = 94% captured, and P3 = 99.95.

EN149 (i.e. FFP1, FFP2, FFP3) also measure inward leakage and P3 must be <2% with a filter performance of 99%.

I suspect P3 is not is not achievable in either category when there is potential for negative pressure, in particular I doubt it stands a chance under EN149.

 

[wizer]

Thanks Chas & Matt.

Now I'm wondering if this is even an upgrade from the AirAce in terms of respiratory protection.

 

[matt]

Thanks Chas & Matt.

Now I'm wondering if this is even an upgrade from the AirAce in terms of respiratory protection.

I too use the Airace and, even with a beard, I am happy that the only air I'm breathing is via the filter (I tested it with the bung that you get and nearly suffocated - which was good).

However... despite being one of the most comfortable masks I've used I still can't wait to take it off.

I tried the Airshield and hated it. Waaaay too cumbersome and uncomfortable for me.

I've got my eye on the JSP type cap but I have my reservations about comfort. I find hats a necessary evil to protect my fashionably receded bonce from the sun and cold. I can't imagine wearing a hat in the workshop in the summer - phew... I'm worried that it's a lot of money to have staring back at me from the shelf whilst I revert to the Airace...

 

[CHJ]

.....I've got my eye on the JSP type cap but I have my reservations about comfort. I find hats a necessary evil to protect my fashionably receded bonce from the sun and cold. I can't imagine wearing a hat in the workshop in the summer - phew... ....

Matt, this is one of the problems I encountered with the powercap, it is really no more than a baseball cap with a hard plastic lining, the only adjustment on fit to stop it slipping is a velcro tab at the back, once tightened to fit there is no airflow around the scalp and I found myself overheating after half hour or so, there is no way I could wear one in my shop during warm days.

 

[big soft moose]

Thanks Chas & Matt.

Now I'm wondering if this is even an upgrade from the AirAce in terms of respiratory protection.

possibly not , but theres no face/head protection with the airace, which matters if a large lump of wood leaves the lathe and goes for a tour of the shop.

 

[jpt]

The airace is a good filter and works well they do sell a face shield that fits into the top of it but I found it useless as it collects shavings etc as it is open at the top.

Before I got an air fed mask I used an airace and a face shield, THIS ONE. It is cheap and stands up to a 10" lump flying off the lathe ay 1500rpm and hitting it straight on, you can also get replacement visors for it.

As the airace has the vent underneath it doesnt fog up when you are wearing the visor.

john

 

[duncanh]

If you do dont get the lite version (the one with the battery integreal to the hat) as toolpost have had major problems with jsps quality control on that one - if you get the other version - the standard power cap - with the belt mounted battery there are hardly any reported failures and I'm very happy with mine

The cable from my cap developed a fault when is was a few months outside warranty. Although I'm sure it was caused by accidentally catching the cable whilst walking past something and damaging it JSP were very helpful and posted me a replacement cable that was easy to solder into place. I now run the cable under my shirt or whatever I'm wearing and no problems since.

the other point worth mentioning is that you cant wear standard ear defenders with the powercap - but axminster do some (uvex behind the ear defenders) which are specially designed for wearing with hats and these are compatible.

Not entirely true - you can't wear them over the top of your head as intended but I happily wear mine slung under my chin. Looks odd but it works!

Duncan

 

[johnny.t.]

Well I now have a dust extractor, albeit still in its box :lol: It's this one from Axminster. I was going to get the SIP one but then I like Axminsters next day delivery(not being known for patience :lol: ) . Now all I have to do is build it a home on the back of my workshop.
I have also spent the last two afternoons cleaning out the workshop and hoovering up all the fine dust that was on everything, to my shame I removed 10 wheelbarrow fulls of shavings offcuts dust etc On the plus side I have found everything I had misplaced over the last month or two :lol:
So from now on I will endeavour to keep it swept and clean for a safer,healthier (and less embarrassing when people put their heads inside the door) enviroment :lol:

JT

 

[matt]

I don't want to rain on your parade but...
Did you notice the review for that particular extractor? I'm not one to believe everything I read and I'm particularly wary of comments that are not quantified or put in to context (e.g. the reviewer does not mention anything by way of comparison (other than a Vax which is a completely different type)), however... you might want to check you're happy with the suction using something quite clean (e.g. pine rather than, say, walnut).

 

[johnny.t.]

I only want to suck sanding dust with it really, so it should be fine for that and if there were 10 reviews saying it was rubbish I would have taken note but most things have at least one review by Mr T.Watt who for his £120 wanted something that could suck his eyeballs out! happy customers don't often review only disapointed ones or ones who got something better than they expected.
It is the same power and moves the same air as the SIP so I'm confident it will do what I want .

JT

 

[Alie Barnes]

What size micron of dust will it suck away? i was looking at this one too.

 

[CHJ]

What size micron of dust will it suck away? i was looking at this one too.

The main criteria as far as Safety is concerned is "What size Particles will it Trap".
As supplied it has relatively coarse filters I assume, as mention is made of finer filter bags being available. Use of these and indeed a plastic collecting bag with the existing filter will reduce the flow rate, as it will with any of these High Volume Low Pressure extractors.

 

[johnny.t.]

What size micron of dust will it suck away? i was looking at this one too.

Not sure Alie, they are called 'coarse' but I'm not too fussed as I'm housing it outside so I won't be breathing the air from it and so for me the coarser the better as it will increase the air flow. i have just put it together and I must say it sucks pretty well, now I just need some more ducting and to build a bit on the back of the shed for it 8)

The SIP one I was looking at(see earlier post for link) I believe came with a 5 micron and a 1 micron bag.

JT

 

[CHJ]

......I'm housing it outside so I won't be breathing the air from it and so for me the coarser the better as it will increase the air flow. .... JT

johnny as it's outside, you might try a comparison without one of the bags fitted and note its sucking performance, (make sure it still has large debris guard in place for the impellors sake) if it makes the sort of difference that it did with my 1200 you may well find it worthwhile getting an even coarser bag made. A lot depends on the power to fan performance of the motor I guess.

 

[johnny.t.]

OK Chas cheers I'll try it and see what a difference it makes, it does seem quite powerful and has exactly the same 750w 1hp motor that my awvsl1000 does.