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I looked around for something similar a while back. I was thinking of the vacuums used to clean out toner from printers (we used to have these when I worked for STK Printer Ops). They had small nozzles and were very effective at cleaning up toner. I wasn't able to find anything remotely affordable.

I've always wondered about using compressed air on static-sensitive electronics. It seems to me to be a bad idea, ESD-wise, but I have no real experience.

DaveD

茂驴陆

Greetings,

茂驴陆

I was working on an HP 438A Power Meter yesterday which was absolutely filthy inside. This thing must have been run 24/7 in a filthy environment over the years. I had to replace the fan, as usual, so I went ahead and pulled the power supply unit out to clean the dust and crap out of it. But, really, there was a layer of thick dust all over the unit.

茂驴陆

This got me to thinking茂驴陆 I need a better way of vacuuming and cleaning equipment that comes in that I won茂驴陆t be fearful of damaging the cmos devices. Mind you I have a grounded ESD pad across my bench that equipment sits on when it is being worked on and I always use a grounded wrist band on my wrist. I investigated some handheld vacuum cleaners and discovered a few models that are electrostatically safe. The cost was a bit of a shocker as they sold for around $375 USD!!! (They must be very proud of their equipment.) What are the recommendations of the group for a hand held vacuum cleaner that would be safe to use around sensitive electronic equipment? I don茂驴陆t mind spending $100 or so on something but $375 is a bit out of the question.

茂驴陆

Best regards,

茂驴陆

Dave W6TE 茂驴陆

茂驴陆

Sent from for Windows 10

茂驴陆

In general, it is not a problem. The thing with static electricity
and vacuum cleaners is, though.

What happens is the dust inevitably has a charge, and when it gets
dragged through the hose, it deposits its charge in the vacuum
cleaner bin. As time goes on, that charge builds up, and discharges
to the motor, and if there is lots of dust, <<BOOM>>!

I was cleaning up sawdust from my basement floor one day, and
there was quite a lot. I was doing the area around my bandsaw,
and <<BUZZAAP>>! The largest bolt of static I have ever seen,
jumped between my elbow and the bandsaw's bed. It seemed to be
5 or so inches long. Plastic hoses are the pits.

I had a coworker once that wanted to clean up his TRS-80, and
asked about using a vacuum. I told him don't. He didn't listen,
and the next day came telling of how the TRS-80 was showing a
complete memory failure. Imagine.

Air passing through the hose potentially could deposit charge too,
but usually doesn't because the blow gun is metal, and you are holding
it, returning the charge back to ground. It would be quite different
if your compressor was passing quantities of dust... but most have
air filters.

-Chuck Harris



Dave Daniel kc0wjn@... [hp_agilent_equipment] wrote:

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The 3M model 497 is an example of the kind of vacuum you want for this work. They can be had used on eBay for < $100.

Thanks Pete,

Yes, that will fit the bill� exactly what I抦 looking for!

Sent from Mail<> for Windows 10

From: Peter Loron peterl@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...>
Sent: Saturday, October 21, 2017 12:57 AM
To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...>
Subject: Re: [hp_agilent_equipment] Anti Static Vacuum Cleaners



The 3M model 497 is an example of the kind of vacuum you want for this work. They can be had used on eBay for < $100.

-Pete



On Oct 20, 2017, at 20:31, David Smith w6te@...<mailto:w6te@...> [hp_agilent_equipment] <hp_agilent_equipment@...<mailto:hp_agilent_equipment@...>> wrote:



Greetings,

I was working on an HP 438A Power Meter yesterday which was absolutely filthy inside. This thing must have been run 24/7 in a filthy environment over the years. I had to replace the fan, as usual, so I went ahead and pulled the power supply unit out to clean the dust and crap out of it. But, really, there was a layer of thick dust all over the unit.

This got me to thinking� I need a better way of vacuuming and cleaning equipment that comes in that I won抰 be fearful of damaging the cmos devices. Mind you I have a grounded ESD pad across my bench that equipment sits on when it is being worked on and I always use a grounded wrist band on my wrist. I investigated some handheld vacuum cleaners and discovered a few models that are electrostatically safe. The cost was a bit of a shocker as they sold for around $375 USD!!! (They must be very proud of their equipment.) What are the recommendations of the group for a hand held vacuum cleaner that would be safe to use around sensitive electronic equipment? I don抰 mind spending $100 or so on something but $375 is a bit out of the question.

Best regards,

Dave W6TE

Sent from Mail<> for Windows 10








[Non-text portions of this message have been removed]

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Thar does, indeed, look like what we used to use. Thanks.

DaveD

听

The 3M model 497 is an example of the kind of vacuum you want for this work. They can be had used on eBay for < $100.

-Pete

On Oct 20, 2017, at 20:31, David Smith w6te@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:

Greetings,

听

I was working on an HP 438A Power Meter yesterday which was absolutely filthy inside. This thing must have been run 24/7 in a filthy environment over the years. I had to replace the fan, as usual, so I went ahead and pulled the power supply unit out to clean the dust and crap out of it. But, really, there was a layer of thick dust all over the unit.

听

This got me to thinking鈥� I need a better way of vacuuming and cleaning equipment that comes in that I won鈥檛 be fearful of damaging the cmos devices. Mind you I have a grounded ESD pad across my bench that equipment sits on when it is being worked on and I always use a grounded wrist band on my wrist. I investigated some handheld vacuum cleaners and discovered a few models that are electrostatically safe. The cost was a bit of a shocker as they sold for around $375 USD!!! (They must be very proud of their equipment.) What are the recommendations of the group for a hand held vacuum cleaner that would be safe to use around sensitive electronic equipment? I don鈥檛 mind spending $100 or so on something but $375 is a bit out of the question.

听

Best regards,

听

Dave W6TE 听

听

Sent from听听for Windows 10

听

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I know that when installing a dust collection system for a wood shop, if metal ducting is not to be used, it is important that discharge wires be run inside all the ductwork and grounded to the dust collector in order to eliminate the possibility of dust explosion due to static buildup. There have been stories over the years in Fine Woodworking magazine about just such occurrences.

DaveD

听

In general, it is not a problem. The thing with static electricity
and vacuum cleaners is, though.

What happens is the dust inevitably has a charge, and when it gets
dragged through the hose, it deposits its charge in the vacuum
cleaner bin. As time goes on, that charge builds up, and discharges
to the motor, and if there is lots of dust, <>!

I was cleaning up sawdust from my basement floor one day, and
there was quite a lot. I was doing the area around my bandsaw,
and <>! The largest bolt of static I have ever seen,
jumped between my elbow and the bandsaw's bed. It seemed to be
5 or so inches long. Plastic hoses are the pits.

I had a coworker once that wanted to clean up his TRS-80, and
asked about using a vacuum. I told him don't. He didn't listen,
and the next day came telling of how the TRS-80 was showing a
complete memory failure. Imagine.

Air passing through the hose potentially could deposit charge too,
but usually doesn't because the blow gun is metal, and you are holding
it, returning the charge back to ground. It would be quite different
if your compressor was passing quantities of dust... but most have
air filters.

-Chuck Harris

Dave Daniel kc0wjn@... [hp_agilent_equipment] wrote:
> I looked around for something similar a while back. I was thinking of the vacuums
> used to clean out toner from printers (we used to have these when I worked for STK
> Printer Ops). They had small nozzles and were very effective at cleaning up toner. I
> wasn't able to find anything remotely affordable.
>
> I've always wondered about using compressed air on static-sensitive electronics. It
> seems to me to be a bad idea, ESD-wise, but I have no real experience.
>
> DaveD
>
> On 10/20/2017 9:31 PM, David Smith w6te@... [hp_agilent_equipment] wrote:
>>
>> Greetings,
>>
>> I was working on an HP 438A Power Meter yesterday which was absolutely filthy
>> inside. This thing must have been run 24/7 in a filthy environment over the years.
>> I had to replace the fan, as usual, so I went ahead and pulled the power supply
>> unit out to clean the dust and crap out of it. But, really, there was a layer of
>> thick dust all over the unit.
>>
>> This got me to thinking鈥� I need a better way of vacuuming and cleaning equipment
>> that comes in that I won鈥檛 be fearful of damaging the cmos devices. Mind you I have
>> a grounded ESD pad across my bench that equipment sits on when it is being worked
>> on and I always use a grounded wrist band on my wrist. I investigated some handheld
>> vacuum cleaners and discovered a few models that are electrostatically safe. The
>> cost was a bit of a shocker as they sold for around $375 USD!!! (They must be very
>> proud of their equipment.) What are the recommendations of the group for a hand
>> held vacuum cleaner that would be safe to use around sensitive electronic
>> equipment? I don鈥檛 mind spending $100 or so on something but $375 is a bit out of
>> the question.
>>
>> Best regards,
>>
>> Dave W6TE
>>
>> Sent from Mail for Windows 10

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Greetings,