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Posted By Clare Haley
We are trialling small air compressors with blow guns to blow dust from our devices. Could anyone advise whether there is any regulations or guidance on the safe working pressure for blow guns. I have had some advise of 2.2 bar but don't know where this is from or whether it is correct.
Hope you can help
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Posted By JAI
Why blow the dust off
Could a vacuum not be used to suck the dust up into a bag?
All that you are doing is transferring the dust from one place to another sometimes creating a more hazardous situation
Jai
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Posted By Clare Haley
Hi
Already tried that option. Our problem is that we have microscopic dust particles under blind holes in delicate circuit boards. We can't get close enough to suck under the components. We are currently using air canisters which cost a fortune. Blowing is the most practicle option
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Posted By Chris Packham
There are some very small, handy guns that are compressed air operated and that use the compressed air to generate suction. Dust is sucked up into a bag or via a hose into a suitable container. The guns can be fitted with a range of nozzles to reach into awkward spaces and would be ideal for the application described.
You will find them in the RS components catalogue or contact me direct for more information.
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Posted By John Beadle
Clare,
When I worked for a large furniture manufacturer, like yourself we had tried all types of vacuuming devices for cleaning but still had to resort to blowing off the final dust deposits. The company we used for our air guns was Silvent, www.silvent.com They were both effective, low noise, and economical to use.
John
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Posted By andy dorr
If you have to use compressed air then you could fit a 'safety air gun', for example see www.silvent.com
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Posted By John Beadle
Andy
You've got to be a bit quicker
John
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Posted By Stephen D. Clarke
I think there is a short section on blow guns in HSG39, my understanding is that air cleaning devices are limited to 2 bar (approx 28psi). Typical mains pressure is 6 bar which can cause a lot of bounce back. Air guns can be fitted with chip guards to deflect flying dust/debris, extension tubes so you can work at a safe distance, particle collection bags etc.
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