Well as a last little hoo rar, after putting the machine all back together, by the next day machine started playing up again. So pulled the old pump out, put new pump in and its quite running ALOT better. The new pump was made in '22 vs my '18 pump and its ALOT quieter, even for a rotary pump, it gets upto pressure alot quicker and obviously doesn't choke out at higher pressure.
another thing I noticed after cleaning out the steam boiler and cleaning both elements, when steaming milk the steam pressure comes back upto full pressure and retains high pressure for longer.
I suspect this is the end of the machine saga for now and ill just have to drink lots of coffee. ☕️
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Profitec Pro 600 Not hitting 9 bar
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Well seems there is nothing wrong with the machine now.
as i mentioned i pulled the original pump apart, just blew the tight bits out and gave it a good scrub. Reseated everything.
So I assembled the entire machine just to give it a go and bam, works completely fine.
So I basically put a little tape on the plumbing joints to seal them up and the machine works completely fine. The new pump arrived but I've already put it all back together so I figured, no point throwing out a perfectly good pump. So when and if it decides to die, should be a 20 minute job.
Honestly it's probably great this happened. Finally got an excuse and the confidence to open it up.
I didn't bother to do a full descale on it i just really scrubbed out the boilers and got a little little crud out and soaked the elements so they are like new. Seems to heat a little bit quicker.
just waiting on the e61 major rebuild kit and machine should be happy for few more years.
Within the next 12 to 24 months ill rip all the boilers out and give them a full descale. I've had the machine about 5 years now and this is the first hiccup it's had and its surprising how easy the machine are to work on, which is also a testament to their quality build.
Thanks for everyone's help too! Hopefully i can pass on knowledge if anyone ever needs some help.
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Was listening to a few pro's talking about the machines, the best method like you said is completely remove the boilers to descale them. That way you get it all out!
Ive ordered a full major e61 maintenance kit from Jetblack so its all the proper parts.
I also pulled the pump apart and had a look inside, its all clean, so i can only think maybe the electronics are gone on it.
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Easier than trying to describe it is this YouTube;
https://youtu.be/1C0VdpfGXhc
In case the YouTube gets removed search "Service and rebuild an E61 coffee group"
This guy is a Aussie coffee tech guru, I learnt heaps from his video.
What you might need as a minimum is 3 X rubber valve seals and maybe some good safe lubricant. Be careful with E61 rebuilt kits as each brand can have different sized parts.
With the age of your machine everything other than the rubber seals should be in good shape.
Pay attention to order of valves and springs in the group I usually put each group in a different clear plastic container of descaler.
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Great response!! Thanks for that one mate.
Honestly I was thinking that removing the boilers was essentially the best method but keep thinking there is probably some trick that the pros use, which to be honest is mostly what a decent tech would do anyway.
Considering how well the pro 600 is laid out and put together, you could have the boilers out in around 20 minutes each, so not to bad. Everything is easy to get at.
but definitely yes labelling pipes and wires and also lots of photos of how its assembled is a must to. My t64 pid died randomly one day and did essentially just that.
I didn't take the boilers out for now as there is a minor amount of surface crust on the steam boiler but really not heaps, more was directly baked onto thr element, of which there wasnt that much. I just soaked both boiler elements for a while each in some proper descaler and they came out looking like brand new. After I reassembled they heated up quickly with no problems. I can't really tell if they are working any better, but they weren't to bad to begin with. I did find some loose scale in the boiler and i suspect this has found its way around.
Took your advise and already ordered a new pump. Could it be that the loose scale has found its way into the pump? Judging by the pipe work, it appears water is returned to the tank so any scale could potentially be recirculated.
I've pulled the obv and the solenoid completely apart and they were completely clean, nothing had got into them.
to descale the e61, should i just unbolt it off and soak it separately? Only appears to be 2x bolts and top and bottom copper pipes.
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There are a few methods if descaling depending on how far you pull apart the machine that I have used;
1. Pull them out if the machine and soak in a bucket or tub of hot water mixed with activated descaler for a fair time I would suggest overnight. Then hose out scrub with green scourer, plastic brush to remove any chunky and a small scale.
2. Less work but less likely to succeed with heavy scale, put warm water and activated descaler in water tank and cycle through until boilers are filled with descaler, leave sit for a few hours. Problem is dislodged heavy scale will flow down the brew steam paths and block narrow outlets and solenoids. Then this requires flushing with 5-10 tanks full of fresh water until your water is running clear with no colour or smell.
You may get some results with vinegar but it sounds like you need the good stuff.
I use clean machine activated descaler powder but there a number of brands where the main ingredient I think is citric acid.
It is also likely you will probably want to descaler the E61 group but this can be done separately.
As to your pump it is not really a repairable item, once they fail you are better off just grabbing a new one. I had a similar failure in my Rocket Giotto and a new pump provided an instant fix to pressure loss.
If you are going to tackle option one, take heaps of photos and label electrical wires.
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Originally posted by roosterben View PostGrab a new Ulka Ex5 after seeing if your above cleaning works.
To me it sounds like a pump failure, under $40 on EvilBay.
Yeah ok, Basically pulled both elements out of the boilers to have a look. There was bit of crust on the 1400w steam element. So soaked that in descaler and came up like new. The inside of the boiler had quite a bit of sediment in it, so just fished it out and cleaned it out.
The main boiler 1000w element was white when i pulled it out, soaked that and back to new. The inside of that boiler is spotless and super clean.
Could it be possible that some of that sediment junk has got into the pump and nailed it ? I after i put it all back together it ran completely fine, then i kept testing it and its back to getting to 8 bar and going dead silent. It sounds like the pump is only running a little bit. What i mean is when u normally run it u get the usual vibrate and rumble, then at about 8 bar it still vibrates but only very gently. Then when you release it all and start again, it fires up, runs fine until 8 bar then back to very light almost sounds like its not running.
Ever since ive cleaned it out, sometimes it works, sometimes it doesn't. Usually its on the side of the pump going "quiet mode". Over all still good to give it a really good clean out and finally get inside the machine. Great build quality and super easy to fix too. Definitely worth the money!
Now all i need to know is how do you descale the boiler, as in what the technique if u disconnect the hoses any ideas?
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Grab a new Ulka Ex5 after seeing if your above cleaning works.
To me it sounds like a pump failure, under $40 on EvilBay.
If you have done the other items you should be able to swap out the pump just be careful of the parts that screws into the pump there should be a slot for a spanner in the pump side and the water line side.
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ive sinced cleaned and reasselmbed the OPV and the solonoid and ready to reinstall. Ive taken the elements out of the boilers and boyo, does it look fun in there. The element is starting to get caked up, so im cleaning the crud off that and clean out the boiler too.
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Hmmm not to sure, but as per Jetblack no screen, only the adjustment on the front of the machine (under drip tray)
I sent JetBlack_Espresso an email with a video before also. Hopefully you can offer some guidance of exactly what its doing.
I've got the OBV and solenoid out atm, giving it a clean out and its all tidy and clean. Nothing looking bad in there.
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No, the 600 doesn't have that adjustment.
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While it does sound like it could be build up, I have the pro 700 which has a screw underneath (back LHS) where you can change the pressure setting. Perhaps you can do the same with the 600.
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Profitec Pro 600 Not hitting 9 bar
Hey Folks,
My title could be a little off. Basically my machine is a few years old now and i think some sediment or build up is stuck in the machine. When i run it normally fires all the way up to around 8 bar then it sounds like the whole machine goes quiet. So for example, a coffee is run through the machine, it will run all the way upto around 7-8 bar and then it basically stops running, the pressure starts to drop, it goes down to around 5-6 bar and then starts running again.
I'm just guessing, but could be the OPV is a bit blocked or perhaps something in the group maybe blocked ? Just the fact its running upto around 7-8 bar then starts to drop off makes me look in that area.
Any suggestions of ideas. My machine is well past warranty and got no dramas opening it up to clean some bits out.
Thanks in advance

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