Lelit Bianca, Noises from grouphead

liadaloni

Hi,

My Bianca is 5 Month old, getting water from DVA water softner. Everything working properly but one month ago I stated to hear some noises. Sometimes it’s “ticks” Sometimes it’s sounds like water with air or starve pipe.

From my hearing, it’s sounds from the grouphead, it’s always appears in the first brew ,when the machine is after IDLE. Less After, coming and go.

One interesting thing, is that if I’ll start with the pedal on half way, no noise.

I tried with plumbing and with water tank.

I Attached some files, hope someone will figure it up.

Thank you.

DavecUK

When did you last backflush th machine with cleaner e.g Pulycaf?

Also when did you last remove the lever and lubricate things.?The o rings in the flow control also need lubricating.

liadaloni

Hi Dave,

I’m backflushing every 30-45 days, the last one was two weeks ago +/-.

I never lubricated the lever or some part, you think the sound coming from there?

The noise is only in the first 5 seconds, before the pressure is rising, I forgot to mention.

Thank you.

DavecUK

liadaloni ’m backflushing every 30-45 days, the last one was two weeks ago +/-.

I never lubricated the lever or some part, you think the sound coming from there?

If you are backflushing with cleaner, lubrication of the parts I mentioned are an absolute must, might even make the noise go away

DavecUK

liadaloni see these links for some background, how and what to lubricate.

https://coffeetime.freeflarum.com/d/188-expobar-office-leva-db-4-dead-pid/12

https://coffeetime.freeflarum.com/d/134-lelit-bianca-water-flow-is-down-to-drops/5

http://coffeetime.wikidot.com/e61-lubrication

And this for cleaning.

http://coffeetime.wikidot.com/how-to-make-a-big-improvement-in-shot-quality

liadaloni

I’ll try, thank you :)

Ernie1

This might sound ridiculous and apologies for the inane suggestion but is it the drip-tray?

I get some unusual sounding minor vibration noises occasionally and it’s because the drip-tray isn’t fully seated. Even a millimetre out seems to cause the noise.

May well not be that but it caught me out!

liadaloni

@DavecUK Thank you very much, the lubrication helped and stopped the noises!