You can clean the machine with a sponge and detergent. However, do not use boiling water to wash the fuselage shell, otherwise it will fade.
It is recommended to add pure water for extracting, mineral water may lead to the scale formation.
1.The portafilter is not tightened or the grounds basket filter is not installed properly
2. The ground coffee is too fine, causing the grounds basket filter to be blocked and extraction failure.
Please use espresso-grade grounds, then install the grounds basket filter properly and tighten the portafilter.