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Temperature surfing the Rancilio Silvia coffee machine [diagram]

I decided to put the recommended temperature surfing standard times [source: Web log of Mythos, Rini, Simon and Debbie (MRSD), here] for the Rancilio Silvia coffee machine up as diagram (rather than text print out).

For anyone that also wants this graphically, here you go.

 

PDF: http://www.swisswuff.ch/files/ranciliosilvia/tempsurfing-diagram-ranciliosilvia.pdf

How to temperature surf a Rancilio Silvia step by step

The line by line instructions cited from the  source [Web log of Mythos, Rini, Simon and Debbie (MRSD), here] :

  • Warm up the machine for at least 30-60 min (or brew at least 2 x double shot espresso and throw them down the drain.. not recommended though)
  • Current State: Indicator light = OFF
  • Turn ON brew button to run cold water into boiler until indicator light is ON
  • Reason: Cold water makes the boiler temperature drop and triggers the boiler to start again when temperature is below 86 C/186 F
  • Wait till the indicator light = OFF and immediately start a stopwatch (iphone or watch). Now, the boiler temperature is 102 C/215 F
  • Precisely wait for 30 seconds
  • Reason: The internal temperature keeps climbing because of pressure inside the boiler even the boiler is turned off. It reaches at 116 C/240 F (which is 30 seconds) and boiler starts to cool down by itself
  • Turn ON brew button to run cold water into boiler for 5 seconds.
  • Reason: This procedure is called “cold flush” to bring down the temperature to 110 C/ 230 F, you should see a lot of steam in first 3 seconds *
  • Turn OFF brew button at 35 seconds (read stopwatch)
  • Now, put the portafilter + cup under the brew head (You have around 15 seconds time to do so)
  • Turn ON brew button at 50 seconds (read stopwatch) to brew your coffee. Note: At this point, cold water comes in continuously for the next 25 seconds + temperature offset between the brewhead and boiler, so the final average temperature would be ideal when it touches the coffee which around 198 F to 204 F (92 C to 95 C) for the next 25 seconds.
  • Reset stopwatch and start it from 0 (Stopwatch at 0 seconds)
  • Your espresso should starts brewing, if tamped and grind properly, your espresso should finish at 25-30 seconds.
  • Note: the boiler indicator light = OFF all the time until the end, the indicator light will turn ON automatically at around 20 seconds **
  • Turn OFF brew button at 25-30 seconds, depends on coffee, tamp and grind

* If you don’t see steam, your machine has not been warmed up enough in (1)

** If you don’t warm up in (1), the boiler isn’t hot enough and the boiler starts to kick in too early, giving you the wrong temperature.

 

Supplement: temperature surfing a Solis Crema SL 70 coffee machine

I am currently trying to use up (as in: until it falls apart) an old Solis Crema SL 70 coffee machine I still had sitting around. Playing across the options of different temperature surfing results, I find that emptying a whole 2 DL cup of hot water into a cup (discarding that) and pulling the shot immediately after that – with the thermostat clearly indicating that the heating is on – gives a lot better results as to crema and taste than warmer temperatures. So I drain around 2 DL of water before making coffee. Without any particular wait in between. This is at around 400 meters above sea level.

 

 


Categorised as: tech



Cite this article:
Wolf Schweitzer: swisswuff.ch - Temperature surfing the Rancilio Silvia coffee machine [diagram]; published 24/07/2013, 12:55; URL: https://www.swisswuff.ch/wordpress/?p=385.

BibTeX: @MISC{schweitzer_wolf_1553619337, author = {Wolf Schweitzer}, title = {{swisswuff.ch - Temperature surfing the Rancilio Silvia coffee machine [diagram]}}, month = {July}, year = {2013}, url = {https://www.swisswuff.ch/wordpress/?p=385} }

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