Recent content by combwork

  1. C

    GRUNDFOS SELECTRIC

    Thanks Muggles, much appreciated.
  2. C

    GRUNDFOS SELECTRIC

    I don't think so. To do this I'd have to drain the system and if it didn't work, do it all again. I've ordered a pair of 22mm spindle valves. With luck (and maybe shortening a pipe) they should do the trick. Final question. With the supply switch turned on the pump runs all the time...
  3. C

    GRUNDFOS SELECTRIC

    . Thank you again. They don't have screwdriver slots; they have raised narrow rectangular ridges across the top. Can only be turned with a fine adjustable spanner or pliers. I guess it comes to the same thing though; as been said, lesson learned. The lower one only seals when fully open, the...
  4. C

    GRUNDFOS SELECTRIC

    Thank you gentlemen, I had a horrible feeling you might say that. It's an odd system. The house was built around 1900. The hot water cylinder has the top and bottom riveted on. The header tank in the attic is made out of lead painted inside and supported in a wood frame. Going by hatch access...
  5. C

    Check even if they've told you the electricity is isolated

    Check, check, and check again! Not always possible. A while back I bought a large tool and cutter grinder from a factory auction. It was hard wired into the factory 3 phase supply. I asked one of the staff if he was sure the power was off. He want to check. "Bloody hell mate you were...
  6. C

    GRUNDFOS SELECTRIC

    Hi, I'm a new member so please forgive me if I'm asking a question that's been asked before. I've a hot-water system using a GRUNDFOS SELECTRIC pump. Just above and below the pump there's what looks like a screw on collar. Next to each collar there's a small on/off valve; turn it 90 degrees...
Back
Top