| The Craftmans Shop > New from Old |
| Resurrection of a CFEI 100 KVA Induction Furnace |
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| awemawson:
Gosh Russ, you at least have been reading my posts :clap: . . . scary isn't it - just to play at melting a bit of brass ! |
| awemawson:
This 'non-maintained' (meaning it's not on all the time) emergency light is rated to last 3 hours. My test showed it to actually have a run time of 2 hours 50 minutes. If I can't get out of the foundry in less than 2 hours 50 minutes I have other problems not solved by lighting :clap: So I went ahead and did the repairs. Firstly I cut a strip of good quality fiberglass printed circuit board and super glued it across the crack to try and stop further movement. Then I put wire 'salvage' links between the nearest component pads either side of the breaks. There was one exception, where the track is deliberately very thin to act as a fuse - in this case I scraped away the solder mask and soldered directly to the track. All salvage links were then fixed down with a few drops of super glue. I seem to remember when I worked at Ferranti on the process control computers boards were allowed to have up to five salvage links, but they had to be identified with a short length of red sleeving to distinguish them from 'modification links' - you were allowed loads of mod links! Mind you these were complex multi-layer boards with oodles of ic's on board. Having proved it still worked I then mounted it over the sliding door entrance to the foundry running the lead to a spare 13 amp socket in a dual that also feeds the roller shutter. Seems to work OK :thumbup: |
| John Rudd:
Ferranti computers?.... Argus GD700 by chance? |
| awemawson:
Argus 400, 500, 600, 700. first one I worked on (Wiggins Teape #5 paper mill in Dartford) was an Argus 400 with Argus 100 input output racks ! My era was mostly A500's & A700's in many variants and applications but I did have an Argus 600 in the office that I'd programmed as a digital clock - about all it was good for though Barclay's Bank used to run payroll on them at Juxon House in St Pauls Churchyard - a hideous architectural monstrosity next to the Cathedral. We did everything from the 4 minute warning (Russian Hoards over the horizon, deep RAF radar bunkers) to mixing dough for Ginger Biscuits (McVitie's Waxlow Road Harlsden) :clap: |
| John Rudd:
I was working at a gas terminal in Barrow-in-Furness during the 80's where they had a 700 series supervisory system. I had the job of site acceptance testing and commissioning of the control system....quite strange how the operating system was loaded and run from discs... |
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