Yeah time like that the tank and vibe pump work better. How much difference
did you notice with the pid?

On Fri, Dec 4, 2015 at 2:36 PM, Benjamin McCafferty <[email protected]>
wrote:

> Yeah, it's a huge socket.  You do have to be sure you're not tweaking all
> the attached tubing, so if it doesn't come easy I'd stop and disasssemble.
>
> I have used citric and it works, but like you said takes a long time to
> clear it.  I now have durgol, and am looking at ways to easily detach my
> water line and draw that into the boilers instead.  Maybe an inline valve
> and a QD or something.
>
> b
>
> Sent from my apple IIe
>
> On Dec 4, 2015, at 11:19, herman dickens <[email protected]> wrote:
>
> I have a shop that we use to service our trucks so I have access to an
> impact wrench. That sounds like a much easier solution than taking it all
> apart. I've descaled mine twice and found very little scale thankfully. It
> does take a while to get all of the citric acid out though.
>
> On Fri, Dec 4, 2015 at 1:34 PM, Benjamin McCafferty <[email protected]>
> wrote:
>
>> Thanks Herman!  I hear you, hard to argue with a functioning machine.  To
>> do the solenoid, I have to pull tubing off the old one, etc. which almost
>> certainly involves pulling boilers, etc.  But I'll look and see if I can
>> access through the bottom.
>>
>> If you can hold the boiler steady, you can exchange heating elements
>> through the bottom of the machine with an impact hammer.  But probably
>> worth it to disassemble and descale at the same time.  I found it
>> surprisingly easier than I'd hoped, but still a pretty big undertaking.
>> I'm an experienced wrench too though...
>>
>> b
>>
>> Sent from my apple IIe
>>
>> On Dec 4, 2015, at 09:36, herman dickens <[email protected]> wrote:
>>
>> Glad you got it going again! I still haven't installed my pid. It's hard
>> to work on it when everything is working fine. I dread having to replace
>> the heating elements and I still have the original ones in it.
>>
>> On Fri, Dec 4, 2015 at 12:23 PM, Benjamin McCafferty <[email protected]>
>> wrote:
>>
>>> Hey all!
>>>
>>> I ordered a bunch of parts and am getting there.  As someone mentioned,
>>> it would seem I have two problems.
>>>
>>> I replaced the PID display yesterday, and the machine heated properly
>>> and the PID display numbers are bright and clear.  So that part was clearly
>>> failed.
>>>
>>> I still have some chatter, which I now know is definitely solenoid, so
>>> I'll bet on that being the cause (it's original, eight years old) as
>>> opposed to the new Giemme controller from this summer.  Man do I ever NOT
>>> want to tear down the machine again.  But the good news is that I don't
>>> have to do it immediately, the machine is working and i just need to switch
>>> it off if the chatter starts and then it resets.
>>>
>>> Will keep you posted, and thanks as always for the help and insights.
>>>
>>> best,
>>> bmc
>>>
>>> Sent from my apple IIe
>>>
>>> On Nov 27, 2015, at 15:11, Ben McCafferty <[email protected]> wrote:
>>>
>>> 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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>>>>>
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>>>
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>>
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>
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