
Originally Posted by
rsnidjik
I've just bought an eight-year-old Expobar Office Control and am learning to use it. My previous machine was a PID'd Silvia, so most of my learning curve has to do with getting used to an HX machine.
With the Expobar, I've noticed that the machine can take a very long time to put out water through the group head if it's been powered on but sitting idle for a while. I'm trying to figure out if this is normal behavior or not.
Here's some data:
At initial warm-up in the morning, if I pull a shot right after the brew light first goes out, water comes out of the group head almost immediately when I hit the brew switch. Subsequent shots take much longer, though.
The chart below shows the wait time for water to emerge at various times following the previous shot.
5 minutes after previous shot: 11 secs.
10 minutes after previous shot: 30 secs.
20 minutes after previous shot: 42 secs.
30 minutes after previous shot: 43 secs.
60 minutes after previous shot: 48 secs.
I ran this sequence a second time and got very similar timings.
Once the machine is initially warmed up, steam and hot water emerge from their respective outlets without a wait regardless of the time elapsed since previous shot.
Is this behavior normal for an HX machine?
If this isn't normal, does anyone know how I can diagnose the problem? Thank you very much.