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Martin Nicholas

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  1. The black to 12V switches a Thermo 90 on and off - from the Installation Instructions.
  2. What's odd to me is that there seems to be two slips that are opposite one another. I guess that one happened first and then the tsunami from that caused the second. Either that or there was an earthquake (a tiny one) from mining subsidence or a fault.
  3. Toothed belts are fine and used in many applications. They are more efficient and more noisy; noise won't be a problem for your application. You also need a tensioner I would think.
  4. Engineer is a much abused term in this country. You can tell if you have employed an engineer as the hourly rate will be in the low hundreds of pounds. You want a technician. To your problem. If your heater is running constantly, the heat must be going somewhere. Is it running on low power all the time? This might be caused by a restricted water flow through the unit or a fault in the unit. There may be air in the pump.
  5. Probably the cheapest construction of a narrow lock would be Somerton Deep on the Oxford, with its single leaf gates top and bottom. The chief engineer/architect for the Avon Trust designed wide locks from scratch using modern materials and methods. The gates are steel tubes and plate and they certainly look indestructible. Drawings should be available from the Trust.
  6. Your SSL certificate only covers: www.canalworld.net & canalworld.net. Probably you need a wildcard i.e: *.canalworld.net to cover any sub-domains you may use. LetsEncrypt do offer these now; verification is by DNS. An unrelated issue: Last time I got an email notification it was DKIM signed, but the public key was not in DNS.
  7. If it's very recent, a walk along the towpath will produce the culprit. Look for your paint on someone else's bow. It must have been heading to the right in your picture.
  8. Have a new one made. The biggest problem will be getting the hinges to line up. Probably that will have to be done on-site.
  9. Webasto have: Thermo Pro 50 Eco: 24V 2.5/5.0kW Thermo Pro 90: 24V 1.8/7.6/9.1kW Also many on AliExpress, cheap enough to have a a spare unit - or two.
  10. The spec sheet for my Thermo 90 diesel says "12V or 24V".
  11. You need to diagnose the cause of the hole. If it is a crack, then a permanent solution might be impossible. If it is bad welding then it can be repaired, best by using a welder. If your tank "bongs" when you fill it, that needs to be stopped by bracing the sides or cracking will occur eventually. Shockingly, welded plastic tanks are cheaper and better.
  12. Was this one of the Oxford Canal improvements of the 1800's? Maybe the old line is still there.
  13. You need an even coating of foam as possible. If your existing conduit is agasinst the steel this won't be possible and you can then get condensation within the conduit like I do. You also need to make sure that there can be no ingress of foam into the conduit. That will make cabling impossible to maintain and it could overheat.
  14. Chris Smith made me 1m double walled stainless pipe with a rain hat. Email me if you need it: reply-202402 [at] mgn (dot) org {dot} uk.
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