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DEADLY WIRING FAULT ; Atten 858D+ Hot Air Rework Station

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Molybdo42:

--- Quote from: Monkeh on October 15, 2013, 06:58:13 pm ---So would you rather they power the heater with 24V and have a gigantic thick cable?

--- End quote ---

Well... Most of the power consumed by this soldering station goes into the heating element and it uses a 5A fuse.
In worst case scenario (ex : failure of temp sensor), can this small wire handle 1150W ?

Monkeh:

--- Quote from: Molybdo42 on October 15, 2013, 08:31:33 pm ---
--- Quote from: Monkeh on October 15, 2013, 06:58:13 pm ---So would you rather they power the heater with 24V and have a gigantic thick cable?

--- End quote ---

Well... Most of the power consumed by this soldering station goes into the heating element and it uses a 5A fuse.
In worst case scenario (ex : failure of temp sensor), can this small wire handle 1150W ?

--- End quote ---

Probably. You want to shove 30A+ up to the handpiece?

M. András:
just got a 852d+ rework station. well the thing has no earth wire to the hotairgun :) i wont change nozzle on that thing without unplugging thats for sure. second i had to tweak the trimpots on the thing to get atleast acceptable temp difference between the displayed temp and the measured temp with a thermocouple, approx 1-2cm from the nozzle initially it was over a 100celsius difference rest was ok didnt even bothered with the iron as i have an expensive weller station. for the price it worth this, but need a bit of practice couldnt get the scrap board to gain enough temp to remove a soic ic

alias_neo:
I just bought the Atten branded one myself, it's in an Atten box, by all accounts I would believe it was a genuine OEM.

However, as soon as I open the box, I notice two things, first, the station does NOT have holes in the right hand side to switch the wand cradle over. I'm a lefty so that sucks for me. Of course I can add the holes myself, but to me it indicated I have a clone.

Second, the calibration pin on the front panel is blanked. I'm not sure how usual this is, but I have seen units with it available.

I intend to take the "Atten" apart before it's turned on, I wonder if someone would be willing to check over some pictures and point out any issues? I'm an Electronic Engineer, so the general stuff is not an issue, but I have a phobia of mains electricity and am not familiar with the wiring regulations etc.

First point of call for me will be to ensure that the live (brown) is the fused wire, and that earth is connected to something, then I'll make sure the earth (yellow, green, yellow/green) pin shows no resistance between the shroud of the handle and the metal of the casing, of course accounting for the paint, and fixing it where there is an issue (with my dremel).

Please correct me if I got any part of that wrong, and whether there are additional points to check.

I don't have a thermocouple or other temperature sensing device to test the accuracy, I intend to buy a better meter, but building up an entire electronics workshop of reasonable quality equipment, all at once isn't easy on the wallet.

Side note: If someone could recommend a meter with temperature capabilities at a decent price (UK) that is reviewed on EEVBlog I'd love to watch more videos and potentially add one to my Christmas list. I currently use a DMM that was ~£5 in Maplin, so in reality it's worth about £2.

Thanks.

M. András:
upload the photos and someone definetly will help you on that. as for the thermocouple its the actual elements which limit the sensing range specially its insulation. i melted part of my original supplied fluke probe when i set my chinese thing to approx a correct temp, the meter measures up to 1000c or more i dont really remember the range. but the probe is rated for 2xx celsius

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