Introduction
Thank you for choosing the Ranbomer NBYACM003 2-in-1 French Press Coffee Maker. This versatile and portable device allows you to brew delicious coffee using either ground coffee or K-cups, making it ideal for various settings including home, office, camping, and travel. Please read this manual carefully before use to ensure proper operation and maintenance.
Safety Instructions
- Always handle with care, especially when using hot water.
- Keep out of reach of children.
- Do not overfill the water tank beyond the maximum 10 oz mark.
- Ensure the coffee maker is placed on a stable, heat-resistant surface during use.
- Clean all components thoroughly before first use and after each use.
- Do not use abrasive cleaners or scouring pads that could damage the surfaces.
Product Components
The Ranbomer NBYACM003 coffee maker includes the following parts:
- Main brewing chamber with plunger
- Ground coffee filter basket
- K-cup adapter
- Base with non-slip feet

Image: Exploded view of the Ranbomer NBYACM003 coffee maker showing its main components and their dimensions.
Setup and Assembly
Initial Cleaning
Before first use, disassemble all removable parts and wash them with warm, soapy water. Rinse thoroughly and dry completely. This ensures optimal hygiene and taste for your first brew.
Assembly
The coffee maker is designed for easy assembly. Ensure the correct filter or adapter is in place depending on your brewing method.

Image: Demonstrates the two primary methods of preparing the coffee maker: filling the reusable filter with ground coffee and inserting a K-cup pod.
Operating Instructions
Brewing with Ground Coffee
- Prepare the Filter: Open the lid of the ground coffee filter basket.
- Add Coffee Grounds: Add your desired amount of ground coffee (up to 12g) into the filter basket. Close the lid.
- Place on Mug: Place the assembled filter basket onto the base, then position the entire unit securely on top of your coffee mug.
- Add Hot Water: Pour hot water into the main brewing chamber up to your desired level (indicated by the 4, 6, 8, or 10 oz markings).
- Press: Slowly and steadily press the plunger down until all the coffee has been extracted into your mug.
- Enjoy: Remove the coffee maker from your mug and enjoy your freshly brewed coffee.

Image: Visual guide demonstrating the steps for brewing coffee using ground coffee, from adding grounds to pressing the plunger.
Brewing with K-Cups
- Insert K-Cup: Place a K-cup pod into the K-cup adapter.
- Place on Mug: Position the assembled K-cup adapter onto the base, then place the entire unit securely on top of your coffee mug.
- Add Hot Water: Pour hot water into the main brewing chamber up to your desired level (indicated by the 4, 6, 8, or 10 oz markings).
- Press: Slowly and steadily press the plunger down until all the coffee has been extracted into your mug.
- Enjoy: Remove the coffee maker from your mug and enjoy your freshly brewed coffee.

Image: Illustrates the use of K-cup pods with the coffee maker, emphasizing the flexibility to brew different cup sizes.
Video: Official Ranbomer demonstration of the French Press Coffee Maker, showing both K-cup and ground coffee brewing processes, including adding water and pressing the plunger.
Maintenance and Cleaning
Regular cleaning ensures the longevity of your coffee maker and the best coffee taste.
- After Each Use: Disassemble the coffee maker. Rinse all parts under running water to remove coffee grounds or residue.
- Deep Cleaning: For a more thorough clean, wash all components with warm, soapy water. The item is dishwasher safe.
- Drying: Allow all parts to air dry completely before reassembling or storing to prevent mold or odors.

Image: The coffee maker is shown being placed into a bag, demonstrating its compact and portable design for travel and easy storage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Coffee tastes weak | Too little coffee grounds; water not hot enough; pressing too fast. | Increase coffee amount; use hotter water (around 200°F/93°C); press slower. |
| Coffee tastes bitter | Too much coffee grounds; water too hot; over-extraction (pressing too slowly). | Reduce coffee amount; use slightly cooler water; press at a consistent, moderate speed. |
| Difficulty pressing plunger | Coffee grounds too fine; filter clogged. | Use coarser grounds; ensure filter is clean and free of blockages. |
| Water leaks from unit | Components not properly assembled; seal damaged. | Reassemble all parts carefully; inspect seals for damage and replace if necessary. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Ranbomer |
| Model Name | NBYACM003 |
| Capacity | 10 ounces |
| Color | Black |
| Product Dimensions (D x W x H) | 3.9"D x 3.9"W x 8.7"H |
| Material | Plastic |
| Coffee Input Type | Ground Coffee, K-cups, Pod Coffee |
| Filter Type | Reusable |
| Dishwasher Safe | Yes |
Warranty and Support
Ranbomer products are manufactured with quality and performance in mind. For warranty information, technical support, or customer service inquiries, please refer to the contact information provided with your purchase or visit the official Ranbomer website. Please retain your proof of purchase for warranty claims.