Sealing malt pipe gaps for faster boil
To speed up the time between your mash and boil, you should set your boil temperature as soon as you lift your malt pipe. While you add sparge water and allow the malt pipe to drain, seal the gaps to help prevent heat losses and make this process a little bit faster.
You can use towels, rags and other things. Or you can use a standard piece of your brewing equipment: silicone hose used to drain wort to your fermenter or no-chill cube. Silicone is a great insulator and you can squeeze the hose down in the gap to lock it into place and get a good seal. The welded brackets on the malt pipe for draining give you enough gaps so that air can escape as the boiler fills.
I cut mine to 905mm for a pretty perfect fit on the Generation 3 RoboBrew. (But of course follow the adage measure twice, cut once!)
It’s not much, though by using equipment you probably already have as part of your RoboBrew kit is well worth it to cut a couple of minutes off the often agonising wait between mash (or mashout) temperature and boiling!