Temp Drop

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Velcro
Latte
Posts: 19
Joined: Tue Mar 06, 2018 5:28 pm
Location: PA

Temp Drop

Post by Velcro » Sun Jul 22, 2018 10:06 pm

While pulling a 2oz warming shot I see the temperature drop 17F,
When I pull my espresso shot the drop is less, ~9F.
The temp is from the readout on the Dream display.

Is this amount of drop normal?
Do I have a problem?
Is there something I should be doing differently?

thanks
Velcro
Sette 270
La Spaziale Dream v1.24
IMS Baskets & Reg Barber C-Flat 53.3

Velcro
Latte
Posts: 19
Joined: Tue Mar 06, 2018 5:28 pm
Location: PA

Re: Temp Drop

Post by Velcro » Mon Jul 30, 2018 12:49 am

Anybody have any comments from their systems.
thanks
Velcro
Sette 270
La Spaziale Dream v1.24
IMS Baskets & Reg Barber C-Flat 53.3

AndyPanda
Macchiatto
Posts: 38
Joined: Sat May 27, 2017 1:34 pm
Location: Northern California

Re: Temp Drop

Post by AndyPanda » Sat Nov 17, 2018 11:35 am

You mean you see the LED lights displaying the temp drop when you pull your shots? yes that is normal.

The way this manages temps is to get the water in the boiler much hotter than you want and then as it flows thru all that brass of the grouphead, the water cools down and hopefully ends up hitting the coffee at the desired temp. The LED temp lights are reading the temp of the water inside the boiler and when you start your shot, the pump starts pumping cold water into the boiler. So, of course, that is why the LED lights show the temp dropping --- the LED lights are reading the cold water being pumped into the boiler and are really only meant to tell you when that cold water has been heated back up again.

Hope that makes sense --- the LEDs just give you an indication that the boiler is at the starting temp you set. They don't tell you anything at all about the temp of the water hitting the coffee in the portafilter.

Velcro
Latte
Posts: 19
Joined: Tue Mar 06, 2018 5:28 pm
Location: PA

Re: Temp Drop

Post by Velcro » Sat Nov 17, 2018 11:22 pm

yes that is what I expected.
My question is on the difference between pulling an empty warming shot - with a big temp drop
vs pulling a real shot with nearly 1/2 the temp drop of the warming shot.
why is there such a difference?
Velcro
Sette 270
La Spaziale Dream v1.24
IMS Baskets & Reg Barber C-Flat 53.3

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