Got it, thanks!  
b

Sent from my iPhone

> On Nov 27, 2015, at 14:32, herman dickens <[email protected]> wrote:
> 
> You should have it. Good luck.
> h
> 
>> On Fri, Nov 27, 2015 at 5:09 PM, Ben McCafferty <[email protected]> wrote:
>> Yes, thanks!
>> bmc
>> 
>> Sent from my iPhone
>> 
>>> On Nov 27, 2015, at 13:45, herman dickens <[email protected]> wrote:
>>> 
>>> I can email it if you'd like.
>>> 
>>>> On Fri, Nov 27, 2015 at 4:34 PM, Benjamin McCafferty <[email protected]> 
>>>> wrote:
>>>> Sure, thanks.  I probably have mine somewhere, but….  :)
>>>> bmc
>>>> 
>>>>> On Nov 27, 2015, at 1:33 PM, herman dickens <[email protected]> 
>>>>> wrote:
>>>>> 
>>>>> I've got a new pid unit in the box that just came in wed from wll and it 
>>>>> has an instruction sheet in it that might help. let me know if you need 
>>>>> it.
>>>>> 
>>>>> On Fri, Nov 27, 2015 at 4:28 PM, Benjamin McCafferty <[email protected]> 
>>>>> wrote:
>>>>>> Thanks Herman, I think I have that and will look.  I agree, find where 
>>>>>> the voltage is missing, but I’m not sure what is “normal” for the solid 
>>>>>> state relay, etc.  Definitely have 120 there, and also at some of the 
>>>>>> PID display unit.  Need to see where it’s *supposed* to be going but 
>>>>>> isn’t, if that makes sense.
>>>>>> b
>>>>>> 
>>>>>>> On Nov 27, 2015, at 1:13 PM, herman dickens <[email protected]> 
>>>>>>> wrote:
>>>>>>> 
>>>>>>> just find out where the voltage is dropping. If you have 114 coming out 
>>>>>>> of the pressurestat at both point you know it's not that. That takes 
>>>>>>> care of half the machine. there's a wiring diagram on the brewtus 
>>>>>>> compendium, I found it after I posted, and it shows how everything is 
>>>>>>> routed. If you don't have a copy I can email one to you.
>>>>>>> Herman
>>>>>>> 
>>>>>>>> On Fri, Nov 27, 2015 at 4:09 PM, Benjamin McCafferty 
>>>>>>>> <[email protected]> wrote:
>>>>>>>> OK--making some progress.  I was looking at it backwards.
>>>>>>>> 
>>>>>>>> The com/1 wire comes FROM the giemme as you said, Herman--so there is 
>>>>>>>> 114V at the giemme, and 114V at the com/1 on the pstat.  So that part 
>>>>>>>> is OK.  I had the pstat backwards in my mind--so as would be expected, 
>>>>>>>> the normally closed/2 terminal on the pstat has 114V when steam is 
>>>>>>>> heating, so that part of the pstat is ok.  That red wire goes to the 
>>>>>>>> high-limit on the steam boiler, and then on to the steam element.  The 
>>>>>>>> far side of the steam high limit has 114V also, so that part is also 
>>>>>>>> OK.  Since the steam boiler heats, I'll call that empirical evidence 
>>>>>>>> that the steam element is fine (albeit somewhat slow).
>>>>>>>> 
>>>>>>>> When the steam boiler light turns off, the voltage at NC/2 drops to 0, 
>>>>>>>> as expected, and voltage at 4/NO jumps to 114V.  The wire from 4/NO 
>>>>>>>> goes to the solid state relay 1/L1, and when the steam boiler shuts 
>>>>>>>> off, 1/L1 goes to 118V (assume I'm just seeing fluctuation in line 
>>>>>>>> voltage--readings have varied from 113-119V throughout).
>>>>>>>> 
>>>>>>>> On the relay, 2/T1 is at 0V, and 3/A1 and 4/A2 are at 118V.  The PID 
>>>>>>>> display is flickering and dimming now independent of the steam 
>>>>>>>> boiler's operation.
>>>>>>>> 
>>>>>>>> 2/T1 is the wire that goes to the high-limit on the brew boiler, and 
>>>>>>>> then on to the brew element.  So I think Todd's previous email to me 
>>>>>>>> is correct, that we're looking at either PID or solid-state relay.  At 
>>>>>>>> least I've now traced 120V all the way from the giemme to the relay; 
>>>>>>>> from there I'll have to see if there is a way to diagnose each part 
>>>>>>>> independently.
>>>>>>>> 
>>>>>>>> Still doesn't explain the chatter of the solenoid, unless that power 
>>>>>>>> comes from the relay or PID, and then if the PID was failing it could 
>>>>>>>> be sending bogus voltage, i.e. interrupted or whatever.  But there is 
>>>>>>>> a terminal on the giemme for "bomba" (pump) and so I've always thought 
>>>>>>>> that the pump's power came from the giemme.
>>>>>>>> 
>>>>>>>> Closer, but still puzzling a bit.
>>>>>>>> 
>>>>>>>> b
>>>>>>>> 
>>>>>>>> Sent from my apple IIe
>>>>>>>> 
>>>>>>>>> On Nov 27, 2015, at 12:15, herman dickens <[email protected]> 
>>>>>>>>> wrote:
>>>>>>>>> 
>>>>>>>>> I think that the pstat gets line voltage from the controller and then 
>>>>>>>>> sends it to the steam or brew boiler from there. I think it's a white 
>>>>>>>>> wire and the voltage there should be 120.  it should also output the 
>>>>>>>>> same voltage to either the brew or steam boiler depending on which is 
>>>>>>>>> calling for it. 
>>>>>>>>> 
>>>>>>>>>> On Fri, Nov 27, 2015 at 3:07 PM, Benjamin McCafferty 
>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>> So riddle me this, Batman--does power come FROM the solid state 
>>>>>>>>>> relay, TO the p-stat--or the other way around?  If the former, then 
>>>>>>>>>> seems the relay is the culprit since the PID probably doesn't handle 
>>>>>>>>>> line voltage to the boiler, right?
>>>>>>>>>> 
>>>>>>>>>> I'll see if I can check input to the relay.
>>>>>>>>>> 
>>>>>>>>>> b
>>>>>>>>>> 
>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>> 
>>>>>>>>>>> On Nov 27, 2015, at 12:04, Benjamin McCafferty <[email protected]> 
>>>>>>>>>>> wrote:
>>>>>>>>>>> 
>>>>>>>>>>> At the rocker switch is 112.9.  At the outer two terminals of the 
>>>>>>>>>>> PID with the negative held to a ground bolt on the case is 113.2.  
>>>>>>>>>>> Center two terminals of the PID are 4 or less.
>>>>>>>>>>> 
>>>>>>>>>>> Good thought on the ground, I'll check.  That was the culprit on 
>>>>>>>>>>> old BMW motorcycles more times than not...
>>>>>>>>>>> b
>>>>>>>>>>> 
>>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>>> 
>>>>>>>>>>>> On Nov 27, 2015, at 11:55, herman dickens 
>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>> 
>>>>>>>>>>>> You could have a loose wire, but I doubt it. What's the voltage 
>>>>>>>>>>>> going into the pid? You could also have a bad ground. I've had 
>>>>>>>>>>>> that happen on other things and it causes the power to be all over 
>>>>>>>>>>>> the place.
>>>>>>>>>>>> 
>>>>>>>>>>>>> On Fri, Nov 27, 2015 at 2:45 PM, Benjamin McCafferty 
>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>> OK, update.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> When I turn on the machine, I put a voltmeter across the pstat 
>>>>>>>>>>>>> terminals.  While the steam boiler was heating, terminals 1/com 
>>>>>>>>>>>>> and 4/no show 60 volts.  1 and 2 of course show nothing.  If I 
>>>>>>>>>>>>> reverse wires 2/nc and 4/no, then cross pstat terminals 1 and 4, 
>>>>>>>>>>>>> I get 120V.  Switching them back to their normal configuration, 
>>>>>>>>>>>>> once the steam boiler is heated and switched off, crossing 1 and 
>>>>>>>>>>>>> 2 shows 120V.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Now this is interesting.  I had suggested to Todd that the 
>>>>>>>>>>>>> flickering of the PID and the machine-gun thing make me thing of 
>>>>>>>>>>>>> an under-current situation, i.e. not enough power to make the 
>>>>>>>>>>>>> relay fire crisply and all the way.  I have also notice lately 
>>>>>>>>>>>>> (though it didn't occur to me as to why), that my steam boiler is 
>>>>>>>>>>>>> being outrun when I steam milk.  Lastly, it took forever for the 
>>>>>>>>>>>>> vacuum breaker to seal shut just now; and it makes sense since 
>>>>>>>>>>>>> the steam element is only getting 60V.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> So now the question becomes, why is reduced voltage happening on 
>>>>>>>>>>>>> this one wire?  It goes to the solid state relay on terminal 1/L1.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> b
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>>>>> 
>>>>>>>>>>>>>> On Nov 27, 2015, at 11:24, Benjamin McCafferty 
>>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>>> 
>>>>>>>>>>>>>> Likewise.  It did occur to me that the pstat relies on a 
>>>>>>>>>>>>>> flexible rubber diaphragm; perhaps that has hardened over time 
>>>>>>>>>>>>>> as it sat on a shelf for three years.  Pinging Chris again; 
>>>>>>>>>>>>>> also, he had offered 20%, not 10%, my mistake.
>>>>>>>>>>>>>> Talk soon,
>>>>>>>>>>>>>> bmc
>>>>>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>> On Nov 27, 2015, at 11:17, herman dickens 
>>>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>> It seems like mine was around that date too. The second new one 
>>>>>>>>>>>>>>> says 4/15. They could have had a bad run of pstats or it could 
>>>>>>>>>>>>>>> just be bad luck. My last pstat lasted almost 8 years.
>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> On Fri, Nov 27, 2015 at 2:11 PM, Benjamin McCafferty 
>>>>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>>>>> Thanks Herman.
>>>>>>>>>>>>>>>> Pstat looks like mfg date of 6/12; shouldn't matter but there 
>>>>>>>>>>>>>>>> you go.  Chris will give 10% discount on a new one, but still 
>>>>>>>>>>>>>>>> chaps my butt.
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> I'll try to pull the giemme cover and watch the relay--don't 
>>>>>>>>>>>>>>>> try this at home, kids!
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> I instinctively don't think the PID or element is bad, but 
>>>>>>>>>>>>>>>> will try the p-stat reversal thing and see where that takes me.
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> I'll post again in a bit.
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> b
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>> On Nov 27, 2015, at 11:07, herman dickens 
>>>>>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>> Ben fwiw it sounds like you have 2 problems. I had the same 
>>>>>>>>>>>>>>>>> problem with a pstat and it only lasted 2 months. The next 
>>>>>>>>>>>>>>>>> one worked fine. There should be a mfg date on the pstat. It 
>>>>>>>>>>>>>>>>> seems like my first one was several years old and the second 
>>>>>>>>>>>>>>>>> one was this year. I was having the same symptoms with the 
>>>>>>>>>>>>>>>>> relief valve but no chatter. The chatter sounds like a relay 
>>>>>>>>>>>>>>>>> or a solenoid. Can you pull the cover off and look at the 
>>>>>>>>>>>>>>>>> relay while the chattering is going on? That might help 
>>>>>>>>>>>>>>>>> narrow things down. You could have a bad pid or element in 
>>>>>>>>>>>>>>>>> the brew boiler causing that not to get up to temp but 
>>>>>>>>>>>>>>>>> honestly I don't work on these things enough to do anything 
>>>>>>>>>>>>>>>>> but guess. I just bought the pid upgrade for my machine but I 
>>>>>>>>>>>>>>>>> may hold off on installing it for a few more days. Maybe Todd 
>>>>>>>>>>>>>>>>> will jump in and give you some ideas.
>>>>>>>>>>>>>>>>> Herman
>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> On Fri, Nov 27, 2015 at 1:57 PM, Benjamin McCafferty 
>>>>>>>>>>>>>>>>>> <[email protected]> wrote:
>>>>>>>>>>>>>>>>>> Hey all!
>>>>>>>>>>>>>>>>>> Hope you all had a great thanksgiving and that you're all 
>>>>>>>>>>>>>>>>>> waking from your food comas.  I had more pie for breakfast, 
>>>>>>>>>>>>>>>>>> but alas, with no espresso.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> I will be talking to Todd soon about this, but thought I'd 
>>>>>>>>>>>>>>>>>> also ping the collective and see if anyone has any ideas.  
>>>>>>>>>>>>>>>>>> Unfortunately, I have a collection of symptoms at this point 
>>>>>>>>>>>>>>>>>> that I can't make fit a common cause; perhaps they will make 
>>>>>>>>>>>>>>>>>> sense to one of you.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> As you may recall, I had quite a bit of trouble this summer, 
>>>>>>>>>>>>>>>>>> and during that process I replaced:
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --Both hi-limit switches
>>>>>>>>>>>>>>>>>> --One or both boiler elements
>>>>>>>>>>>>>>>>>> --Giemme controller board with the updated one
>>>>>>>>>>>>>>>>>> --PID temp probe
>>>>>>>>>>>>>>>>>> --Main power switch
>>>>>>>>>>>>>>>>>> --New Jaeger pressure-stat
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> Also, as with this summer's shenanigans, my mom is visiting 
>>>>>>>>>>>>>>>>>> in two weeks, and dearly loves a good latte.  I spent 
>>>>>>>>>>>>>>>>>> several hundred on overnight charges, parts, etc. while she 
>>>>>>>>>>>>>>>>>> was here in the summer, and managed 2 days of lattes for her 
>>>>>>>>>>>>>>>>>> in her three-week visit.  Hoping to get the machine back in 
>>>>>>>>>>>>>>>>>> action fast!
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> At the same time I did all that work, I totally disassembled 
>>>>>>>>>>>>>>>>>> everything, descaled completely, and cleaned the solenoid 
>>>>>>>>>>>>>>>>>> until it was shiny, i.e. all scale removed, etc.  The 
>>>>>>>>>>>>>>>>>> solenoid functioned fine with power.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> The machine worked normally from summer until this week, but 
>>>>>>>>>>>>>>>>>> with one weird symptom.  It would occasionally make a 
>>>>>>>>>>>>>>>>>> machine-gun noise, i.e. something mechanical opening and 
>>>>>>>>>>>>>>>>>> closing very rapidly, 5-10 times per second maybe.  To me, 
>>>>>>>>>>>>>>>>>> it is a higher pitched sound than the solenoid, and sounds 
>>>>>>>>>>>>>>>>>> like it originates from the area of the giemme controller.  
>>>>>>>>>>>>>>>>>> Todd suspected the solenoid might be sticking; I was 
>>>>>>>>>>>>>>>>>> thinking perhaps one of the two relays in the giemme 
>>>>>>>>>>>>>>>>>> controller was misfiring (not sure that they are even 
>>>>>>>>>>>>>>>>>> relays--but I'm referring to the two small sets of contacts 
>>>>>>>>>>>>>>>>>> in the giemme that look like points from a 
>>>>>>>>>>>>>>>>>> points-and-condensor ignition). At its worst, this symptom 
>>>>>>>>>>>>>>>>>> would continue for 10+ seconds and I'd shut the machine off 
>>>>>>>>>>>>>>>>>> and back on; it would seem to "reset" and stop.  At its 
>>>>>>>>>>>>>>>>>> best, it would last for a few seconds and stop on its own.  
>>>>>>>>>>>>>>>>>> It clearly is related to when the machine goes to refill the 
>>>>>>>>>>>>>>>>>> steam boiler, i.e. when closing the steam wand, dumping hot 
>>>>>>>>>>>>>>>>>> water boiler, etc. is when this would happen, very 
>>>>>>>>>>>>>>>>>> intermittently.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> As of a week ago, the machine-gun thing got really bad, i.e. 
>>>>>>>>>>>>>>>>>> it happens 4-5 times while steaming enough milk for a latte, 
>>>>>>>>>>>>>>>>>> etc.  When shutting off the steam wand, when it goes to 
>>>>>>>>>>>>>>>>>> refill, the machine-gun noise happens every time and 
>>>>>>>>>>>>>>>>>> frequently does not stop.  As the machine sits at idle and 
>>>>>>>>>>>>>>>>>> occasionally refills the steam boiler, it also makes the 
>>>>>>>>>>>>>>>>>> noise every time.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> At this point, it would seem to me that the culprit would be 
>>>>>>>>>>>>>>>>>> the giemme or the solenoid, but wait, there's more...
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> A few other symptoms have happened in the past week, which 
>>>>>>>>>>>>>>>>>> really confuse the issue for me, because I admittedly don't 
>>>>>>>>>>>>>>>>>> know exactly how electricity flows through the machine:
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --The Jaeger P-stat has allowed the machine to over-pressure 
>>>>>>>>>>>>>>>>>> about 3 times in 5 months, causing the blowoff to activate. 
>>>>>>>>>>>>>>>>>> No way this should be happening with a new p-stat, but 
>>>>>>>>>>>>>>>>>> otherwise it has been normal.  As an aside, Chris Coffee 
>>>>>>>>>>>>>>>>>> will not warrant the p-stat, stating 30 days is the warranty 
>>>>>>>>>>>>>>>>>> from that manufacturer.  So I have a 90-day-old failing part 
>>>>>>>>>>>>>>>>>> that won't be covered. Unexpected.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --The PID display (which I have set to 204F) has stayed at 
>>>>>>>>>>>>>>>>>> 105F for several hours each morning for about four days in a 
>>>>>>>>>>>>>>>>>> row, and then later in the day, has heated to 204F.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --As of two days ago, the PID heated the brew boiler to 105F 
>>>>>>>>>>>>>>>>>> and stayed there all day, never heating to 204F.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --Earlier this week, one day only, the PID display was blank 
>>>>>>>>>>>>>>>>>> when the machine was on.  It remained blank for about an 
>>>>>>>>>>>>>>>>>> hour, then suddenly lit up.  It showed 105F.  Every time the 
>>>>>>>>>>>>>>>>>> steam boiler fired, the PID screen would flicker and get 
>>>>>>>>>>>>>>>>>> really dim, almost not visible.  Then it would brighten 
>>>>>>>>>>>>>>>>>> right back up when the steam boiler turned off.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --Most of the time (and this is an old thing, maybe normal), 
>>>>>>>>>>>>>>>>>> the PID numbers and "dot" will blink every few seconds, i.e. 
>>>>>>>>>>>>>>>>>> they go off for a split second, and then come back on.  The 
>>>>>>>>>>>>>>>>>> dot at this point will not stay on for more than a split 
>>>>>>>>>>>>>>>>>> second also, i.e. it never shows the boiler calling for heat 
>>>>>>>>>>>>>>>>>> once the steam boiler is off.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --The same day the PID display was blank and dim, there was 
>>>>>>>>>>>>>>>>>> a single time where the steam boiler filled, and then shut 
>>>>>>>>>>>>>>>>>> off (solenoid clicked), but the pump kept running 
>>>>>>>>>>>>>>>>>> indefinitely.  I finally had to turn off the machine to make 
>>>>>>>>>>>>>>>>>> it stop.  After power cycling the machine, the pump filled 
>>>>>>>>>>>>>>>>>> and stopped normally again.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --At this time, the steam boiler fills and heats normally, 
>>>>>>>>>>>>>>>>>> with the exception of the machine-gun noise, which happens 
>>>>>>>>>>>>>>>>>> almost every time.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> OK--I think that's it.  I'm sorry if someone has told me 
>>>>>>>>>>>>>>>>>> this before, but I'm trying to understand first how 
>>>>>>>>>>>>>>>>>> electricity travels in the machine.  So far, the only thing 
>>>>>>>>>>>>>>>>>> that seems like a common point to all of these symptoms is 
>>>>>>>>>>>>>>>>>> the giemme controller, but that's based on my limited 
>>>>>>>>>>>>>>>>>> understanding.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> How I *think* it works is this:  main power switch sends 
>>>>>>>>>>>>>>>>>> current to the giemme, which sends current to the pump and 
>>>>>>>>>>>>>>>>>> to the pressure stat (via the two "relays" in the giemme?).  
>>>>>>>>>>>>>>>>>> If the steam boiler is not up to temp, the p-stat sends 
>>>>>>>>>>>>>>>>>> current to it until it is at pressure, then it sends current 
>>>>>>>>>>>>>>>>>> onward to the PID.  The PID sends that onwards in bursts via 
>>>>>>>>>>>>>>>>>> its solid-state relay to heat the brew boiler.  Meanwhile, 
>>>>>>>>>>>>>>>>>> the giemme sends current to the pump (via a relay?) and to 
>>>>>>>>>>>>>>>>>> the solenoid, so the solenoid closes, diverting water to the 
>>>>>>>>>>>>>>>>>> steam boiler, and the steam boiler fills.  When water 
>>>>>>>>>>>>>>>>>> touches the probe in the steam boiler, it essentially shorts 
>>>>>>>>>>>>>>>>>> out and stops the pump, and the solenoid opens, sending 
>>>>>>>>>>>>>>>>>> water line pressure to the brew boiler, which is held back 
>>>>>>>>>>>>>>>>>> by the group.  When the lever is lifted, the lever 
>>>>>>>>>>>>>>>>>> mechanically opens the group to let water through, and the 
>>>>>>>>>>>>>>>>>> switch behind the lever sends power to the pump to cause it 
>>>>>>>>>>>>>>>>>> to run and push water under pressure through the group.  If, 
>>>>>>>>>>>>>>>>>> while pulling a shot, the steam boiler level drops below its 
>>>>>>>>>>>>>>>>>> probe, the solenoid closes and interrupts water to the brew 
>>>>>>>>>>>>>>>>>> boiler/group until the steam boiler is filled again.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> Does that sound about right?  Again, I would really like to 
>>>>>>>>>>>>>>>>>> understand this whole circuit, especially the giemme 
>>>>>>>>>>>>>>>>>> controller and what the two mechanical contacts are for on 
>>>>>>>>>>>>>>>>>> that board.
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --Also, my PID is about 5-6 years old by now; what is the 
>>>>>>>>>>>>>>>>>> expected service life of those?
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> --Can I safely test the PID by reversing NO/NC terminals on 
>>>>>>>>>>>>>>>>>> the P-stat?  Wouldn't that have the effect of prioritizing 
>>>>>>>>>>>>>>>>>> the PID first?
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> OK, I'll stop.  Enjoy your leftovers, and have a good coffee 
>>>>>>>>>>>>>>>>>> for me!
>>>>>>>>>>>>>>>>>> 
>>>>>>>>>>>>>>>>>> best,
>>>>>>>>>>>>>>>>>> Ben McC
>>>>>>>>>>>>>>>>>> Sent from my apple IIe
>>>>>>>>>>>>>>>>>> 
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