Breville Oracle won't stop hissing

Equipment doesn't work? Troubleshooting? If you're handy, members can help.
P4RS4
Posts: 17
Joined: 1 year ago

#1: Post by P4RS4 »

Hi everyone

Just picked up a used Breville Oracle 980. The owner told me that the hot water tap doesn't work and the steam function is somewhat faulty too. Brought it home and after it heat up, the steam works, and the hot water also activates the pump however not one drop of water comes out. Also it wouldn't stop 'hissing' so I opened it up and saw that what I assume to be the anti vacuum valve doesn't seem to close and the steam boiler is constantly leaking steam. I was wondering if my diagnostic is right and if so what is the part called and where can I get a replacement? Also is it a simple procedure or am I better off taking it to a technician.

Thanks

The red circle shows the source of the leak

austinado16
Posts: 387
Joined: 1 year ago

#2: Post by austinado16 »

I don't know anything about your machine.

Have you tried sliding out that hair pin style clip that holds that unit in place, and pulling the electrical unit out, and inspecting it's o-ring, or whatever it uses to seal itself inside that round housing? If it uses an o-ring, and you find that that has become baked hard, or is cracked, you can find drawers of o-rings at auto parts stores like NAPA, and at real hardware stores (not a big box store). If it's a failed o-ring, it's likely to be metric. If you can't find actual metric o-rings, you can very likely find and SAE size that's close enough to work. Upon re-assembly, put a little food safe lube/grease (also available at hardware stores in the plumbing dept) or give it wipe with some olive oil, so that it slides down into position, without damaging or rolling the o-ring.

Again, I know nothing about your machine, but that's how I would approach the repair if it were mine.

A quick search online shows the part is called an NTC With Wire, and is about $8. Below is a photo I found of it, from someone else's attempt to repair theirs. You can see there's a red silicone o-ring that seals it into the housing.

luvmy40
Posts: 1152
Joined: 4 years ago

#3: Post by luvmy40 »

Definitely the NTC. I would replace all the o-rings in the steam circuit. If one is done, the rest will follow soon. They are cheap and the job is fairly easy. Be aware there is a port with an 0-ring seal on the inboard side of the boiler below the solenoid. It's the most dificult to replace, but it should not be ignored.

The vacuum breaker is in the middle of the top and has the silicon tube with the spring inside. They do go bad from time to time, but can usially be cleaned up rather than replaced.

Most parts available can be purchased from Out West Coffee https://outwestcoffee.com.au/index.php/ ... lle-parts/

O-rings for PTFE tubing connections: https://www.amazon.com/Sterling-Seal-OR ... 0188NN0A2/

O-rings for the boiler water level sensor probe connections: https://www.amazon.com/gp/product/B00138384I/

O-rings for the water level probe internal seal(probe to insulator): https://www.amazon.com/gp/product/B01MTD9ZJ5/

P4RS4 (original poster)
Posts: 17
Joined: 1 year ago

#4: Post by P4RS4 (original poster) »

Thanks for the replies. Does a faulty NTC explain why I'm not getting any hot water? Everything else seems to function normally.

gverig
Posts: 8
Joined: 7 years ago

#5: Post by gverig »

@luvmy40 (or anyone else who knows)
Is there a guide for what o'rings (size and type, but mostly type) are the best to use? E.g. the difference between silicone vs. fluorosilicone (in your recommendations there are two different types), also Peter Russel mentions in one of his videos EPDM vs. Aflas. How much of a difference does this make?

Also, any recommendations on o'ring sets (e.g. https://www.amazon.com/dp/B07L1249RF/)?

Thank you!