| Electronics > Beginners |
| How to clean up lab after big capacitor blew? |
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| EEVblog:
:clap: |
| Ampera:
--- Quote from: tpowell1830 on April 11, 2018, 12:54:21 am ---Well, you start by removing your pants and underwear, then you go outside and get a water hose outside and spray away all the brown places and wring out all excess water, then throw them into washing machine and get fresh pants and underwear. Don't know how to clean all of the white junk that came from capacitor... --- End quote --- It's been around or below freezing over here for ages. That would probably be lethal for me... :-DD |
| Yanis:
Reminds me of a story my brother related. We worked in an Instrument Repair Centre for Telstra and he was repairing a vector scope. I was not there when this happened. There was a fault in the EHT cage which was situated at the very back of the case and he had to pretty much completely dis-assemble the unit to get to it. It turned out the be an electro. So with the electro replaced and the unit back together he powered it on only to be startled by a huge bang. So he re-dis-assembled it and discovered a splatting of electrolyte and Al foil all over the inside of the unit. He told me that it took the best part of a day to clean up. He then checked the layout to make sure that the electro was in the correct way round. So he checked the silk screen on the board against the circuit diagram only to discover that the silk screen had the cap the wrong way round with reversed polarity. After he cleaned it up and replaced the cap and re-assembled he rather tentatively turned the power on. All good. Lesson, never believe the layout diagram or silk screen. Always verify. |
| Barny:
Some years ago, I put in a capacitor in reverse. My workbench looked similar. I collected all mecanical tools, screws and other parts which are not prone against wather and took them to work. There they put them in the industrial washingmachine for parts which get spraycoated and soaked all in conservation oil afterwards. All other parts I cleaned with soap wather. It was a damn work, but it had to be done. The loudest electric bang I heared was the switch from the secondary trafo taps of a 15KV / 2400VA transformator. Thats this type of switch which has ca. 50mm^2 switch contact surface area (2 switches in series) and uses compressed air to blow out the switching spark. Some idiot decidet its fun to switch on the trafo and change taps while I was fixing the auxiliary compressor in a few meters distance. |
| Barny:
Jepp. Sorry. I missed the K. It was 2400KVA. This transformator supplied 4x brushed universal motors. |
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