This is a multi-part message in MIME format. There is a review on the Coffee Geek by a guy named D Doll. He said it = is easy to adjust the pressure stat without taking the top off. He uses = a small flat headed screwdriver through one of the holes in the warming = tray. I'll be damned if I can find it? Does anyone know how to do this?
On 31 Dec 2003 at 13:23, alfred wrote: <Snip> It's inside the machine, connected to the boiler, a small plastic cylinder with a screw to turn for adjustment. Call your dealer for details on how to get to it, on older Giotto's, the case had to be removed. Jim
On Dec 31, 2003, at 5:06pm, Jim Schulman wrote: <Snip> Just be sure that you UNPLUG the machine first! John Blumel
On 31 Dec 2003 at 18:03, John Blumel wrote: <Snip> Not advisable. You need to see the operating guage to know where it's set. It is advisable to unplug the machine if the case needs removing. But don't adjust the pstat until the machine is back at operating temperature. I tried it unplugged the first time to set it up from the Italian .9 bar setting to 1.2. After a wait for warmup, I got a screaming safety valve, and 2 bar boiler pressure. Unplug, re- remove the case (did I mention I had put it back on?), and after another wait for warm up, I adjusted it while in operation, seeing the effect of the adjustment on the pressure. It's a lot easier. Jim
Jim: I'm not going to mess with this one since it is going back as soon as the new Giotto Premium arrives next week. I hope that I can just remove the top on the new one but in any case: How much did you have to turn the screw to achieve the increase from .9 to 1.2 bar? The present machine must be set as you describe at .9. At this setting, I can only achieve 190 degrees and then only after three trial pulls.
On Dec 31, 2003, at 6:13pm, Jim Schulman wrote: <Snip> If the screwdriver makes contact with the machine casing while you are adjusting the pstat and the machine is plugged in, you will get one hell of a shock. I learned this the hard way with my Millennium on the day of the Northeast Blackout. Not that I had anything to do with causing it. John Blumel
Jim: I forgot to ask. When you did your adjustment with the unit plugged in, where was the water tank? Off? I thought it wouldn't operate unless the sensors for the water tank were plugged in.
On 31 Dec 2003 at 19:18, John Blumel wrote: <Snip> Ouch, not the best way to straighten ones hair! I don't think the pstat adjustment screw is **supposed** to be live. But the switch terminals right next to it are. So doing it through the grate under the drip tray does pose a shock hazard. Mine is set up the old way, requiring case removal, so nothing grounded is close to the screwdriver. I suppose with this setup, the best way is to get all setup, switch off, and do a small adjustment quickly so as not to loose heat, switch on, and check it. Jim
On 31 Dec 2003 at 16:09, alfred wrote: <Snip> There's differently cased models of the same basic Mater brand pstat in these machines (even by the same manufacturer). Some go clockwise, most go anitclockwise, to adjust higher. Try about a 15 degree (1/2 hour) turn to check the effect. You can watch the pressure guage to see the turn off/turn on range of the heater. The Italian setting usually has the heat turning on at 0.85 to 0.9 bar, and turning off at 1 to 1.05 bar. For lighter roasts, it's best to set it to turn on at around 1.05 to 1.1 bar and turn off at 1.2 to 1.25 bar. The present machine must be set as you describe at .9. <Snip> You can see the pstat setting by watching the pressure guage go up and down. The on/off cycle will be faster if you let the steam wand "dribble" With full steam, the heat may run flat out, and the guage may not cycle at all. Jim
Or get a non-metal screwdriver. They're made for adjusting pots on *hot* as in turned on CRT's... MM
On Jan 1, 2004, at 3:48am, miKe mcKoffee wrote: <Snip> What are they made of? Ceramic? John Blumel
Nylon. There are also non-ferrous metal ones, usually bronze, for adjusting coils, but that won't work for you. I've also seen insulated shank screwdrivers for electricians. <Snip>http://www.sweetmarias.com/maillistinfo.html
This is a multi-part message in MIME format. Hmmm... bronze has copper in it.. conducts electricity very very good...... Dan Bollinger wrote: <Snip>
On Jan 1, 2004, at 12:58pm, miKe mcKoffee wrote: <Snip> Thanks Mike (and Ben). That nylon sure is versatile stuff. Next thing you know they'll have nylon portafilters. John Blumel
This is a multi-part message in MIME format. Yep, That's why I said it wouldn't work so well for you.
On Jan 1, 2004, at 3:31pm, John Blumel wrote: <Snip> Correction: ...and Dan John Blumel