Quick MILL Carola Owner's Manual - Normal Operation
Normal Operation
Gauge
The gauge is for your pump (brew) pressure. When sitting idle the gauge is reading trapped pressure and
may vary. To get an accurate pump pressure reading install the backflush disc in the portafilter and lock it
into the grouphead and raise the brew lever. After a few seconds the pressure should rise to about 9-10
bar. When you make espresso the pressure will be slightly less which is normal. This can be helpful in
setting your grind. If your pressure is 9-10 bar with the backflush disc, but when you make espresso it is
less than 8 bar then you need to go finer with your grind which will create more resistance to raise the
pressure. Should you need to adjust the pump pressure please refer to the maintenance section of the
owner’s manual.
Lights
On the front of the machine there are 2 indicator lights. The green power light will illuminate when the
machine is on. The red heating light will illuminate every time the heater comes on and will cycle on and
off to maintain temperature.
Switches
There is one switch
on the front of the machine. When switched “on” the machine will automatically fill
and begin heating. Please be conscience of this on first time set up and refer to directions stated above.
Normal Operation, Continued
Pump
The machine is equipped with a 52W vibratory pump. Vibratory pumps can be loud by nature and their
tone may change during the course of a shot which is normal.
The pump (brew) pressure is regulated by the expansion valve. To learn how to set the pump pressure
please, refer
to the maintenance section of the owner’s manual.
The pump is equipped with a klixon thermal fuse. Should the pump run for an extended period of time the
klixon will kill power to the pump until it has cooled off.
The vibratory pump is also equipped with a pulsar. The main function for this device is to aid in the
quieting of the pump