CoOptVal 20-Bar Professional Espresso Machine Compatible with Various Capsule Brands Whether you're a coffee enthusiast or not, CoOptVal can fulfill all your coffee fantasies Pain Point Addressed by CoOptVal：Providing coffee enthusiasts with a solution that is compatible with multiple coffee capsule brands, satisfying diverse taste preferences and delivering a rich, flavorful experience. What Dose CoOptVal All-in-Oine Coffee Maker Bring? Getting More Choices, Enjoying Greater Value Cup Size Guidance - Important for K-Cup Users K-cup users should be aware of the cup size limitation. It is recommended that customers use a 10 oz espresso cup with a height of up to 2.8 inches (7 cm) for the best experience. Please ensure your cup fits within these dimensions before purchase for a smooth and hassle-free coffee experience. Starting With CoOptVal For Optimal Coffee Extraction How do you measure the quality of a coffee machine? Endless Innovation, Perfecting Every Cup – CoOptVal Elevates Your Coffee Experience. Sleek, Compact, and User-Friendly Design for Effortless Brewing. Common Issues and Solutions 1. Why is my coffee machine not dispensing water? If your coffee machine isn’t dispensing water, it might be due to insufficient water in the tank, triggering the anti-dry protection mechanism. To fix this, follow these steps: Ensure there is enough water in the tank before use.Turn the knob to the Hot Water function.Once water flows from the steam wand, turn the knob back to Coffee mode.This should restore the coffee extraction function. 2.How do I extract coffee using the machine? Push the control lever forward to reduce water volume and backward to increase it.Push the control lever left for cold brew or right for hot brew.After setting, wait for about 20 seconds as the machine preheats and performs pre-infusion, then it will automatically begin the extraction process. For common issues, please carefully browse the User Manual.pdf available on the listing. Alternatively, you can send a message through the Q&A section or contact directly to us, and we will ensure your issue is resolved within 24 hours. CoOptVal Coffee Maker Disassembly Diagram What is CoOptVal's after-sales support? Important Considerations to Ensure Your Satisfaction？ We provide a 60-day exchange policy along with a 1-year protection plan and lifetime technology support on all products. We will strive to find the best solution for you. Committed to long-termism, we stand by every CoOptVal customer, growing together with you. CoOptVal adheres to the principle of "customer first" gaining trust through excellent after-sales service. The trust and support of our customers are the driving forces behind our continuous improvement and value delivery. To help you make an informed decision and ensure a delightful experience with our coffee machine, here are a few key factors to consider: 1. Cup Size Limitation: Our machine supports a range of cup sizes depending on the portafilter used. Universal Accommodation: Fits cups up to 3.5 inches (9 cm) in height.K-Cup Portafilters: Ideal for smaller cups, with a height limit of 2.8 inches (7 cm).Nespresso Portafilters: Suitable for medium-sized cups, up to 3.1 inches (8 cm).Dolce Gusto Portafilters: Accommodates cups up to 3.1 inches (8 cm).Ground Coffee/ESE Portafilters: Fits larger cups, up to 3.5 inches (9 cm).Please check the height of your preferred cups to ensure they fit comfortably under the machine. 2.More Effective After-Sales Service: We appreciate genuine feedback. Leaving only a rating without content may not allow us to confirm your purchase, identify the issue, or provide an effective solution. It could also cause confusion for other customers. Your detailed review and feedback will help us improve the product and deliver better after-sales support. We hope these insights help you make the best choice for your coffee needs. Should you have any questions or need further assistance, our dedicated customer support team is here to ensure you have a wonderful coffee experience.