I'm up to brew #7 on the Grainfather and it's a lovely bit of kit, but it's taken some time to get used to things. Thought I'd share some of t he shortcuts I've used:
1)
Sparge water - I boil 25l in the main kettle and then store 15-20l in a spare insulated cooler, which I wrap in a towel. This keeps it hot until i need it to sparge, so much so I often have to cool it a bit. The remaining water is topped to mash volume and reaches temp much faster. I add the grain when I get to about 68/69^c as it drops only a tiny amount. I assume this is because of the thermal mass of the whole unit.
2) To save time, i set the GF to start up on a timer as it takes about 80 mins to heat the sparging water to boil. This way, when I come in it's boiling.
3)
Hops -whole or pellet, they totally munge up the pump filter and slow down the counterflow cooling enormously. i've switched to using muslin bags for the hops, which is *perfect* and has taken the cooling down to a trim 15 minutes. I start to decant to the FV once the kettle temp is about 30^c, meaning the outflow is about 20^c.
4) I use the hot counterflow outflow water to sterilise the FV and store some for washing purposes.
5)
Cleaning - I remove all the electrical parts, bag the plugs, and use a karcher powerwasher - nice and clean, nice and quick, lots of mess though.
Ongoing problems:
1) I'm not sure that the bagged hop method is allowing for full utilisation of my hops, so i may start increasing the quantities by 50% and see what happens
2) hop spider - lovely idea, but may need some tinkering to work in the GF once the wort level drops off.
Anyhow, just thought I'd share my findings, good to keep in touch and all that.
Lord Chuggington