Hkoenig expro980 Manuel D'instructions page 10

Choose appropriate ground coffee
The coffee should be freshly ground and subjected to deep roasting. You may need to use French
or Italian roasted coffee powder for espresso. Pre-ground coffee powder can only remain scented
for 7 to 8 days unless it is stored in a sealed container and placed in a cool place. Do not store
coffee in the refrigerator or freezer. It is recommended to grind all coffee beans into powder before
use. The fragrance of the coffee beans stored in the sealed container can be maintained for 4
weeks.
If you are grinding coffee beans for yourself, this step is a key step in the espresso making process
and requires more practice. The coffee beans must be finely ground, and the adjustment knob can
adjust the coarseness & fineness of ground coffee. The preset intermediate grind setting is optimal
when the machine leaves the factory. When coffee ground by cutting blade becomes coarser
during use, the adjustment knob can be properly rotated to make the ground coffee finer.
• The ground coffee should look like salt.
• If the powder is too fine, even if it is tamped it may cause the coffee to flow out intermittently.
These ground coffee feels like flour
• If the powder is too thick, the water will flow too fast, which will hinder the extraction of its rich
aroma.
In order to get a uniform, consistent coffee, be sure to use a high quality coffee grinder.
Operation instruction
1. Fill appropriate water into water tank, water level can't exceed MAX.
2. Connect the machine into power source, press the Power button (steam knob needs to be
turned off), the machine starts to preheat, the indicator flashes until the machine finishes
preheating, the power indicator becomes always on, and it enters the standby state.
3.Grinding coffee beans: Press power button, attach grinder to unit, grinding indicator is lighted
white, fill bean container with appropriate coffee beans, turn adjustment knob to the proper setting,
then attach pressurized filter holder into filter holder bracket and slightly push it forwards to grind
coffee beans until desired amount of ground coffee is reached.
Tip:1. it is recommended to make delicious coffee at grind settings 8-10 and the continuous
working time of grinder should not be more than 1min each time.
2.If pressure gauge indicates too low-pressure during brewing, you can turn the grind knob to a
finer setting and then try to grind the beans to brew the coffee. (see below figure)
3. If pressure gauge indicates too high-pressure during brewing so that coffee can't be brewed or
coffee is over-extracted, you can turn the grind knob to a coarser setting, and try to grind beans to
brew coffee. (see below figure)