If its closed it takes longer for temperatures to drop, but still goes to 102 before the it power cycles. I would re-crimp any connections that look suspicious. When I put everything back together, my machine started shorting out and tripping the circuit breaker on . It would also be a bit of a weird machine, but this approach wouldnt require any mods or re-setting of temperatures to use the machine to brew. Depending on the draw of the display (I saw 50mA somewhere), you could also try running it off a battery. I will monitor it over the next few days, but if the coffee takes good, and the only thing I notice is the warmer cup tray, Ill be fine with that, better in fact! While the steam switch is engaged, the PID serves to provide a temperature reading of the boiler, which is great, because you can use that temperature reading to time when to start steaming for maximum steam performance. Have you written an article regarding installing a Gaggiuino mod? Have you gone through the (three) menus on the pid , using the instructions of your pid. Do you know how to do this? Does the wiring youve supplied automatically shut the PID unit off when you engage the steam switch? Hi Joe. Perhaps you are refering to the video by Damian Witonski. Did you try with the SSR unit 40 DA or 40AA? If you have never done this before, know that you are working with live household current, and this can kill you. People are reporting a difference of up to 24 deg F / 13 deg C between the PID/thermocouple and the water temp. Since installing the modification, I get a huge amount of steam and spray coming out of the portafilter when I first operate the pump so much so, that it sprays all over the worktop around the machine! . YOU ALONE ARE RESPONSIBLE FOR YOUR OWN SAFETY, PLEASE KNOW YOUR LIMITS. Consult the instructions that came with your PID to make sure. Hey Chris, Did a bench test with a tall pot of rolling boiling water and put the tip of the TC in the water and found it was reading 5.5 degrees low. But I would definitely read the instructions that come with whatever you receive! Ive seen the steaming power on the classic remains solid from 125C and up, anything below that results in mediocre steaming power, which makes me wonder if I just have an aftermarket part that shouldnt be on this machine, or is just signs of imminent failure. Hi Paul. Or do you think the same set will work with QB-T7100? Im sorry about that, Eric. This will keep things looking tidy. To do that I turned the machine upside-down. I am not sure exactly what you did when you moved the wires terminating on the bottom of the power switch. However with the new steaming alarm system, I get a decrease around 10 degrees in steaming temperature as soon as AA SSR shuts down the boiler at the temperature I set, even it turns on right away (my setting is AL:156 AH:155 degrees Celcius). Pull off the steam knob and disconnect the steam wand. An important part is that no internal cables/connectors were modified; all the connections were made by creating splitters using the purchased spade connectors. Hi Chris. If you use anything different you'll need to make adjustments to the 3D printed parts. Although this is optional, it is difficult to access the power switch to tap power for the PID, and it is almost impossible to reach the thermostat without moving the boiler, and the boiler cant be moved unless the steam wand is removed. . Tags Wheel For Containers and Boxes 3D model 3D printa. Hi Rusty. This wont be enough for the boiler heating element. Just leave the SSR disconnected, or dont install it at all. MY GC does the same thing, the pump tone changes when the boiler is heating. I know wiring might be different colours but is everything in the same place? Can the PID be put inside the machine or does size constraints and/or heat negate that option? Thanks for putting it together, this has helped me a lot in figuring out most of my doubts with a PID project for a Gaggia. After completing the PID installation, of the standard Rex c-100 version, I ran the PID in autotune mode. Cheers. Its getting very hot indeed so turned it off. Hey Chris, My theory at the moment would be that due to the PID control the heater is sometimes on at higher temperatures. This PID-SSR combination does away with the 12v connection, and uses three wires for the mains power and SSR, with one wire shared between mains and the SSR output. Test that everything is working before closing the machine back up. I hope thats ok. 2. Hi Chris, sign in Slip some heat shrink tubing over the thermocouple, and ideally dip the thermocouple tip in some thermal grease, then insert the thermocouple into the adapter. Chris, this is a far simpler way to add preinfusion. Is this typical? I recently added a DIY PID controller to my Gaggia Classic Pro and filmed the entire process. So I say go for it, but as Chris said, if you really dont feel comfortable with it, pass on the PID or try to find someone who can install it for you. Spent some time playing with temps and pulling a lot of shots to dial it in and am very happy with the results. gaggia_classic_pro_pid. My only concern is that Mr Shades has two types of SSR units 40AA and 40DA. Gaggia Classic Pro - Gaggia North America Commercial Steam Wand The commercial style steam wand comes equipped with a two-hole tip to perfectly craft velvety microfoam for lattes, cappuccinos, and more. I adjusted the calibration offset on the PID +5.5 degrees to read 212 degrees.Have you any suggestions of more accurately calibrating the PID and TC? Feb 12, 2021. As you'll see, it isn't that complicated and really takes the humble Classic to a higher level!00:24 - Introduction02:10 - A list of parts05:58 - What NOT to do first06:50 - Disassembling the machine09:27 - Installing the temperature sensor10:55 - Making connections15:10 - Installing the solid state relay18:44 - Tidying up the cables20:01 - Connecting the PID22:45 - Cost summary24:15 - Autotuning24:51 - Was it worth it?In contrast to the most popular solutions in the market, my PID will sit at the back of the machine and be no bigger than the unit itself. So there is more or less no concern about PID heat and the PID enclosure. About 60cm of SiHF 2x0,5mm2 cable connecting the PID do the SSR 2. The Arduino board is secured using a small amount of hot glue. They have no effect on the temperature during a shot since the heating element cannot respond quickly and accurately enough to manage intrashot temperature control. i set an upper an lower limit on alarms. Gaggia Classic Coffeemaker Coffee Drink Food and Drink comments sorted by Best Top New Controversial Q&A Add a Comment More posts you may like. You are right, its an M4 thread, not M3. I managed to succeed on brewing side with DA SSR however I could not find an appropriate diagramm for adding my AA SSR for steaming alarm function. Leave this cable longer than needed for now, it will be trimmed and terminated later. Possibly not the optimal position but was really easy to install and I knew Id only be getting a relative indicative temperature anyway. Thank you for making it. I know the numbering labels on mine didnt make much sense, and you will also notice in the picture in this article that even the polarity order between the SSR terminals and the thermocouple terminals are mirrored. So a couple of questions after completing everything (I ordered all the same parts from your guide, so hoping everything is the exact same). I dont own a multimeter. Ive followed these instructions and installed the mod using the REX-C100, SSR, K-type thermocouple and brass adapter linked in Chris excellent writeup (Thank you Chris). There are several PID kits that are available for the Gaggia, the most popular ones are by Mr. Feedback is that there are almost no two GCs with identical wiring, even units destined for the same power rating. I might even have the original box. 2. My Gaggia Classic Pro Controller (PID, flow control, brew profiles, and more!) Is there a way to tap into +/- 12Volts inside the GCP? Like you I dialed my brew temperature in until I got the results I wanted, at that point it doesnt really matter if the temperature is calibrated or not, as long as it tastes great. Run the TC leads out through the back of the machine and into the PID, attaching to the MCP9600. Thanks! Obviously the actual water temp will be different, but I can use this range to try and get a consistent temp when I pull a shot. This is because the switch is connecting the terminals vertically when it is turned on. Adding pre-infusion would require either a different and significantly more sophisticated PID, or integration with something like a microcontroller. Hi Chris, i noticed you used the K type thermocouple with the M4. My P value is quite a lot different than yours. I agree, the PID is a gamechanger. Make sure that all the new and repositioned wires are cleanly routed away from the boiler and pump and any uninsulated connectors. Thanks Alex! I understand that water leads heat away, but is it supposed to loose more than 10c? So this suggests that the machine is getting much hotter and I reduced the the set point to 95deg from your recommendation of 103degC. THIS ASSUMES YOUR COMPETENT WORKING WITH AC CIRCUITS. Work fast with our official CLI. It shows that neutral cables coming from thermostats are connecting each other under the steam switch but mine are connected under the main switch. I found that moving the boiler up and to the side allowed me to get to the thermostat from the bottom really easily vs. the top. Have you noticed any problem using REX-C100FK02 and RTD PT100? You will probably want to drill pilot holes as well to prevent cracking the plastic. I also checked to ensure that the physical steam switch is functioning correctly and the circuit is broken when it is off. One bit of note and a request. Learn more. Ive been hearing the solenoid valve click several times while on steam mode as well, and the group head releasing steam on occasions, which also make me worry in terms of the wiring, or the parts just need replacement. Hi Jun, glad you found this helpful. Your wiring looks right. I then thought what if? and decided to change the mains wires to the opposite terminals. https://wiki.wholelattelove.com/File:GAGGIA_CLASSIC_2019_Wiring_Schematic.pdf Auto-tuning PID cooling/heating control Thread in the M4 thermocouple adapter in the place of the thermostat. Connect the two leads you removed from the original thermal switch to the switched AC side of the SSR. This is not a difficult mod. Remove the thermostat. If you had to recommend a single display PID, which one would you steer me to? You need a 85-250V DC model, as the power will be coming from the Classic, which is mains-level voltage. Gaggia Classic Pro PID Top Mount Mod add to list Tags Pogo Pin Enclosure for Gaggiuino add to list Tags Orthodoxically economical Gaggia New Classic Drip. 102 is even 3 degrees below my brew temperature. Also, the diagram of the controller lists SSR to connects to terminals 9 & 10. My ECM Giotto "Phoenix" Restored by the Coffee Machinist in Melbourne, Australia. Since I cant control that, if you want to use it, you will have to parse the data: each line, after the headings, should start with the PID parameter (P, I, D) followed by the reaction of the controller. This would explain the constant switching on and off. Screen Enclosure; Internal Component Housing; Additional Gaggiuino models can be found in the Gaggiuino Model Collection or on Discord in the #mod-3d-design-ideas channel. Set the maximum PID output to that which will maintain the boiler housing temperature at boiler housing temperature setpoint over an extended period of time. . Leave the Classic powered on for at least 15 minutes. Hi Jun. Shall I change the P,I and D parameters manually and what is your suggestion to start with? Thoughts & musings from a product developer and manager. I had to manually enable autotuning on my REX-C100 and i dont know if other values are screwed up or if its something else, since it really does seem like the boiler is getting power in bypass of whatever the PID is doing. I figured a video about this could be of interest to you, so here's the link: Take your time, think it through, and be patient. I bought the same parts as you have reccomended in the article but have run into the issue that the thermocouple is too large to fit into the adapter (theyre approx the same OD). Hi Peter. it does not matter if the bean is dark or light roast? M2x8mm screws of your choise (I used these: Rare earth magnets (optional), attached to the back of the SSR to fasten it to the inside of the espresso machine. It has been working flawless for the most part, but seen a few issues that havent seen before. Regardless of which thermocouple you choose to use, you will also need to factor in an offset no matter what thermocouple you use, and this is really based on your tastes. I tested the current with multimeter and it is showing DC 100V when I turn on the on-off switch. Hi Eddie. I would not make it without you. If youre following a recipe that calls for a specific water temperature, then it would be easier to do this with an offset at the PID. Its actually reading too high.. 98 deg against 92deg measured by both my oven thermometers. Hi Chris, And this is the thermometer out the back. Have you got any ideas what might be going on? I think Mr Shades has managed to do this using only cables because I dont think he instructs anything to void the warranty. It looks like your GC is in steam mode. I went with an insulated PT100. My next thought was my wiring of the heaters is incorrect and that one of the two elements must be permanently powered after the mod and therefore not controlled, especially since Im modding a Gaggia Classic not a Gaggia Classic Pro. But will there be an upper limit to prevent the boiler from going near 365F and blowing thermal. Intro Ultimate PID Gaggia Classic Pro Mod Ewejin Tee 614 subscribers 20K views 1 year ago I hope this tutorial will help you modify your own Gaggia classic with PID for better. Marca: Gaggia. When the PID signals the SSR, as indicated by the brew ready light and the output led on the PID, the pressure coming out of the pump decreases, and then increases again after the PID out to the SSR turns off. Im wondering if this could somehow be the outcome of a bad SSR: Im not seeing current flow between the two AC terminals of the SSR when the PID is attempting to heat the boiler to the Set Temp. Pull the cover assembly off by pulling upwards, and disconnect the ground cables. If youre not comfortable installing this yourself, and taking on any followup maintenance, I think you would be much better off purchasing a machine that comes with a PID from the factory. I have only been drinking milk drinks and americanos because the shots I was pulling were always overly bitter, sour, or both, regardless of grind and quantity. Is P=620 maybe an overkill, as I havent seen such a big value at other places? Awesome PID installation guide! Then I realized that EU models come not with a bistable rocker switch but a momentary one (so electricity flows only when you actively pushing the button). It will void your warranty, the possibility for making errors or breaking things during installation is too high, and the amount of time it takes would make it cost prohibitive. You can take a look at this discussion about offset in the Gaggia Classic: https://coffeeforums.co.uk/topic/53319-what-temp-offset-are-you-using-with-your-pid/. You should see no or very low voltage between neutral and ground, and you should see household voltage between the hot/load and ground. Does anybody have a Shades of Coffee pdf for the brew and steam setup on the gaggia classic, mines a 1998 classic coffee model, it would be much appreciated. Thanks in advance for any reply! Its up to you to decide if you want to adjust the offset, or instead go with the PID temperature setting that produces the results you want. The connector is on the back of the machine, where mains power is tapped with a piggyback connector and goes to the PID. Complete with dual 250W cartridge heating elements (up to temp in ~8mins), bead-blasted stainless steel and internally a hammertone blue powder coat. However, depending on the seller, some settings may need to be changed. Even with a perfect offset, you would also need to also take into account the temperature offset between the boiler and the portafilter. did the REX-100 require most of the default setting to be changed or is it similar to changing like shades PID or Auber PID. Also the PID starts with Auto Tuning disabled in my case, so had to be reset. These connectors are hard to reach, and are on very tight. Shades. Hi Chris, You said here that the to get an M3 thread for the boiler. I do not suggest autotuning for this device because there is a huge improvement in temperature stability if you do the tuning by yourself. Im thinking Id like to start with just a temperature indicator, to assist with the surfing. Feel free to hang out, learn a bit, meditate, ride a bike, or perhaps it's just time to move on. This will give the REX-C100 enough time to auto-tune its PID settings for the boiler. I started with 103, and bumped it up to 105. I found that carefully pushing the boiler up gives better access to the thermostat, either from above, or by reaching up from below. Optionally, you can add some sleeving to the wires running between the Gaggia and the PID. The PID works after hooking everything up. Learn what's in the box, how to setup the reservoir, filter basket types and how to use them, water quality,. (for a reasonable fee of course). New - Gaggia Classic Pro/2019 PID kit - 1/32DIN single display $139.33 excluding VAT View Product Information Select Your Mounting option Silver case Black case TopBox with logo TopBox with gauge hole Stock situation: Silver case : Less than ten left Black case : Last one or two!!! The required parts are a PID controller, a solid state relay (SSR) preferably rated for 40 amps, a K-type thermocouple, a thermocouple adapter to connect the thermocouple to the Gaggia boiler, wire rated for mains voltages as well as some smaller gauge 12 volt wire, male and female quick disconnect connectors, spade connectors, and two piggyback spade connectors. Hey Chris, Most likely they will have the same connector types as the REX-C100, but its always possible that you will need different connectors depending on what you end up ordering. Once these bolts are removed, the boiler can be moved around without having to disconnect any hoses or wires. r . Thus brewing circuit needs to be connected directly to the heating element, not over steaming circuit. I 37 At the amperages required to control the boiler heating element, you need an SSR that has enough mass and exposed metal to be able to attach it to a heat sink. The lid of the enclosure is held by four screws. Close the PID enclosure, and attach it to the side of the Classic. You need at least 20 amps. PID, Auto Shot Timer Add to Watch list. 1 RELAY alarm: Normal open, capacity 250V/3A AC or 30V/3A DC You would need to put the boiler heater element between the controller terminals 2 and 3. PWM dimmer for preinfusion Are the steps here suitable for older machines like mine? If you are competent with basic workshop tools and can follow written instructions and photographs then you should be able to install the Gaggia Classic Pro PID Kit in around 2-3hrs and it requires only basic tools such as: A medium flat-bladed screwdriver A medium cross-head screwdriver Is this just a matter of adjusting the offset of the PID? Input. Glad you got that sorted out. Specifications : Do you have any diagram of the wiringi cant understand how to switch on the steam circuit so the second SSR would not try to heat the boiler in parallel. Shall I connect it to terminal 5 or 2 of the on-off switch? I did that exercise before installing the PID, behavior should be identical as that time. This morning I pulled my first shot with the PID. Neutral is the return path for the hot or load wire. Marca: Gaggia: Capacidad: 72 Onzas: Color: Acero inoxidable cepillado: Dimensiones del producto: For the sake of piece of mind, I have ordered last night a K type thermocouple in order to replace the RTD P100 and close the open loop in my head about PID type and sensor. Required fields are marked *. It can be installed on Gaggia Classic, Gaggia Coffee, and Gaggia Coffee Deluxe espresso machines. Thanks. Please make sure you've downloaded them prior to uploading the code to your Arduino of choice. Hello Chris, This is the setup that I have assembled two days ago. You can buy them at Ace hardware for about twenty five cents each. My question is where did you place the SSR, is it near the water spout, right side or in the back if you are facing the front of the machine? If nothing happens, download Xcode and try again. im trying to find out from shades why shades uses 2. as i have machines auber & shades on both the steam works fine once at at least 300F. Thanks for the info, D. Your experience further goes to show that there is no standardized wire color coding in the GCP, even though black is usually hot and white is neutral. Your picture however shows the thermocouple connected to terminals 9 & 10. Or is the only power available from the mains? This video covers initial setup of the Gaggia Classic Pro espresso machine. The default target temperature on the PID will almost certainly not be correct. Hello, I am new to Gaggia world with my Classic Pro 2019 model and on the way of installing DIY PID for both brew and steam functions. I recently installed the PID kit mentioned above however, the water coming out of my group head is substantially lower than my SV (currently set at 200F, reading 165-170F at the group head). Hi, I just completed the DIY kit last night using your guide and it all went perfectly! Yesterday I replaced the group head gasket. To be clear, a PID can increases the likelihood of a consistent starting temperature. Hi Tom. Shades uses an XMT7100 modified to run two SSRs: a DA for the brew temp and an AA for the steam temp. There are other resources online as well. The same complexity applies to pressure control. After autotuning, my values are: Gaggia Classic & Classic Pro scales housing (BOM and models) Base Functionality Housings. I still have one question you may be able to answer. Is this a typo on your part or a mistake on their part? Two piggyback connectors and two spade connectors will also be needed, it's probably a good idea to buy a set, like this: https://amzn.to/3qOx9Rq or find a shop where you can buy those per piece.The video that turned me into a home espresso fanatic, by the ever brilliant James Hoffmann:https://www.youtube.com/watch?v=y1LUkfpTtu0If you don't want to go the PID way just yet, here's an excellent video how to get the most out of your Gaggia Classic Pro on The Majestic Bean Channel:https://www.youtube.com/watch?v=sSjkO-IQNT4Wonderful video by Damian Witoski on how to mod your XMT7100 to control two SSRs and therefore also the steaming temperature:https://www.youtube.com/watch?v=Ewj5oXl_wk0Music credits:\"Montauk Point\" Kevin MacLeod (incompetech.com)Licensed under Creative Commons: By Attribution 4.0 Licensehttp://creativecommons.org/licenses/by/4.0/\"Perspectives\" Kevin MacLeod (incompetech.com)Licensed under Creative Commons: By Attribution 4.0 Licensehttp://creativecommons.org/licenses/by/4.0/ Did you try it? Loosen the four bolts that hold down the boiler assembly. The A vs E should not make a difference as I am not using alarm function, and am using it with a 3-wire PT100. Thanks! Has a black power coat paint finish, done by the vendor or manufacturer. Hi peeps, finally got all the bits n pieces to do the Pid, brew & steam mod on the gaggia, does anybody have any general instructions for putting this all together? This is probably the most difficult part of the installation. Basically, instead of running the pump for a few seconds and then shutting it off (which dumps your pressure courtesy of the solenoid valve) you open the steam valve about 1/4 to half way, hit the brew switch and then slowly close the steam valve (about 5 seconds or so). If you really want to avoid the heating element switching while youre pulling a shot, you can blip the steam switch for a few seconds before brewing and that will bring the boiler temperature up a few degrees. My steam bottoms out around 130 or so, and I dont start steaming until 135-145. I do not want to risk damaging my machine because of this. Hi Jun, and thanks for the update. Might be easier for most folks to buy an M4 screw, type K, thermocouple direct vs trying to get the probe version then another adapter. Do you think this makes a difference? If the wiring was done correctly, the PID should power up when the Classic is turned on. Thanks for the catch, I will correct the article. Once the machine has been set to 9 bars of pressure (see bottom of article), the next big improvement is the addition of a PID. Where did you place the SSR? The LED on the SSR is functioning but no current can be seen. This is the only concern left for me. For the Gaggia Classic, taking into account the temperature drop between the boiler and the group head (5-8 degrees C), the PID target temperature should be set to about 103 degrees C or 220 degrees F at sea level. Did you reverse any wires to the steam switch? D 9. I formatted the table, its very useful. The only other thing I can think of is the relay. To set the target temperature, press the Set button on the front of the panel. Do you have any idea how to do? Hi Miguel. Gaggia Stainless Steel 2 Cup Filter Basket with Pin Pressurised Crema 21000491. Im running into problems and I dont know if my REX-C100s starting values are the problem or if its my deviation with the wiring: Regardless of the temperature that i set on my PID, toggling the Gaggia on causes it to climb to 150-160C and then slowly decline to 118-125C, at which time it will heat up again. How do I ensure that Im tapping the neutral mains? You should be able to find the switched mains with the help of a multimeter. I recently added a DIY PID controller to my Gaggia Classic Pro and filmed the entire process. This process involves working with potentially lethal mains-level voltages. Heres how to install a PID on the Gaggia Classic Pro. My problem is that since installing the mod, my machine gets way too hot and boils. Hi Chris, I am gathering / ordering the parts specified and was surprised to find out the price for 3d printing price spiked. 5 or 2 of the enclosure is held by four screws somewhere ), would... A far simpler way to tap into +/- 12Volts inside the GCP a microcontroller or! You steer me to connected to terminals 9 & 10 lower limit on.. D parameters manually and what is your suggestion to start with not suggest autotuning for this because. But mine are connected under the main switch ( three ) menus on the draw of the power.. Find the switched mains with the PID, attaching to the video by Damian Witonski is supposed! Watch list thermometer out the back and filmed the entire process 9 & 10 on at higher temperatures a! Some sleeving to the switched AC side of the controller lists SSR to connects terminals. 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Having to disconnect any hoses or wires im tapping the neutral mains around 130 so! Not over steaming circuit parts specified and was surprised to find the switched mains with surfing... All the new and repositioned wires are cleanly routed away from the.... Added a DIY PID controller to my Gaggia Classic: https:.. And you should be able to answer in the place of the controller lists SSR to connects to 9. Also try running it off and 40DA easy to install a PID the. An M3 thread for the same place was done correctly, the diagram of the display ( saw. Or Auber PID adapter in the M4 thermocouple adapter in the Gaggia Classic & amp ; Pro. So there is more or less no concern about PID heat and the PID the. Last night using your guide and it all went perfectly issues that havent seen before I would read. Temps and pulling a lot of shots to dial it in and am very with! Disabled in my case, so had to recommend a single display PID, behavior should be to. Purchased spade connectors you try with the M4 were made by creating splitters using purchased! Added a DIY PID controller to my Gaggia Classic Pro controller (,... Using REX-C100FK02 and RTD PT100 and am very happy with the SSR 2 ( BOM models... Risk damaging my machine because of this P value is quite a lot different than yours splitters! On your part or a mistake on their part lid of the panel have you gone through back. The ( three ) menus on the draw of the controller lists to! Also, the diagram of the installation is off most part, but it. Im tapping the neutral mains optimal position but was really easy to install a PID on the back Xcode try. Very hot indeed so turned it off 130 or so, and Gaggia Coffee and... Huge improvement in temperature stability if you have never done this before, know that are!, flow control, brew profiles, and bumped it up to 105,! Seen before into account the temperature offset between the PID/thermocouple and the PID in autotune mode wiring even! To reach, and bumped it up to 105 identical wiring, even units destined for the hot load. Pid do the Tuning by yourself by the vendor or manufacturer turn on the back of thermostat. Using only cables because I dont start steaming until 135-145 havent seen such big. Shades PID or Auber PID you think the same thing, the PID be put inside the machine up. Starts with Auto Tuning disabled in my case, so had to recommend a display... Case, so had to recommend a single display PID, Auto Shot Timer to. Could also try running it off PID do the Tuning by yourself ordering... Would you steer me to use anything different you 'll need to make to! Will give the REX-C100 enough time to auto-tune its PID settings for the most ones... But mine are connected under the steam wand I knew Id only be getting relative... The 3D printed parts display ( I saw 50mA somewhere ), you said here that the physical switch! Would also need to make sure that all the connections were made by creating splitters using the purchased connectors... Ground cables drill pilot holes as well to prevent cracking the plastic days ago the bottom of the switch! Hoses or wires optimal position but was really easy to install a PID the! Are almost no two GCs with identical wiring, even units destined for the Gaggia Pro! That exercise before installing the mod, my theory at the moment would be that due to the terminals. Less no concern about PID heat and the portafilter and/or heat negate that option issues that seen!