1. Introduction
Thank you for choosing the kejector Portable Coffee Maker Espresso Machine. This compact and versatile device is designed to provide a convenient espresso experience wherever you are, whether at home, in the office, or during outdoor activities like camping and hiking. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new coffee maker.
Please read this manual thoroughly before first use and retain it for future reference.
2. Safety Instructions
- Do not immerse the main body of the espresso maker in water or any other liquid. Never rinse the main body under running water.
- Keep the device out of reach of children.
- Use only the provided USB-C cable for charging.
- Ensure the water tank is filled to the appropriate level; do not overfill.
- Exercise caution when handling hot water or hot coffee to prevent burns.
- Do not operate the machine if it is damaged or malfunctioning. Contact customer support for assistance.
- Only use coffee grounds or capsules compatible with this machine. Refer to the 'Operating Instructions' section for details.
3. Package Contents
Verify that all items are present in the package:
- kejector Portable Electric Espresso Machine
- USB-C Charging Cable
- Ground Coffee Adapter
- Capsule Adapters (for large and small capsules)
- User Manual
4. Product Overview
Familiarize yourself with the components of your kejector Portable Coffee Maker.
Figure 4.1: kejector Portable Coffee Maker dispensing espresso. The image shows the main unit, a clear collection cup, and coffee ingredients.
The device consists of a main body with a power button, a water tank, and interchangeable adapters for ground coffee or capsules, which connect to the bottom section where espresso is extracted.
5. Setup
5.1 Initial Charge
Before first use, fully charge the device. The kejector Portable Coffee Maker is equipped with a 7500mAh rechargeable battery.
- Connect the provided USB-C cable to the charging port on the device.
- Connect the other end of the USB-C cable to a compatible power source (e.g., car charger, power bank, or wall adapter).
- The indicator light will show charging status. A full charge supports approximately 4 espresso shots with cold water heating or over 50 brews with pre-heated water.
Figure 5.1: Charging the kejector Portable Coffee Maker. The image shows the device connected via USB-C, with icons for various charging methods.
5.2 Assembling for Use
Ensure all parts are clean before assembly. Refer to the 'Maintenance and Cleaning' section for cleaning instructions.
6. Operating Instructions
The kejector Portable Coffee Maker offers a simple one-button operation for brewing.
6.1 Choosing Your Coffee Type (3-in-1 Versatility)
The machine is compatible with ground coffee, large capsules, and small capsules. It is not compatible with Nespresso Vertuo Series capsules.
Figure 6.1: 3-in-1 coffee options. The image displays the different adapters for large capsules, small capsules, and ground coffee.
Figure 6.2: Compatible and Incompatible Capsules. This image visually distinguishes between capsule types that can and cannot be used with the device.
- Ground Coffee: Use the ground coffee adapter. Ensure the coffee powder holder is installed correctly to avoid difficulty in removal. (See Figure 6.3)
- Large Capsules: Use the large capsule adapter. Dimensions: 2.13" diameter × 1.38" height.
- Small Capsules: Use the small capsule adapter. Dimensions: 1.46" diameter × 1.18" height.
Figure 6.3: Correct installation of the Coffee Powder Holder. Follow the correct method to ensure proper function and easy removal.
6.2 Brewing Modes
The device supports two brewing modes: Brewing Mode (for pre-heated water or cold brew) and Heating Mode (for heating cold water).
Figure 6.4: Brewing and Heating Modes. This image explains the button presses for different brewing options.
6.2.1 Brewing with Pre-heated Water (Hot Brew) or Cold Water (Cold Brew)
- Fill the water tank with hot boiled water (for hot brew) or cold drinking water (for cold brew). The maximum capacity is 60ml.
- Insert your chosen coffee adapter (ground coffee or capsule) into the bottom section.
- Place a cup beneath the dispenser.
- Long press the Power/Mode button to start extraction.
- The device will extract coffee directly. For hot water, extraction is quick (approx. 20 seconds). For cold water, extraction is also direct, producing a cold brew.
6.2.2 Heating and Extracting with Cold Water (Hot Brew)
- Fill the water tank with cold drinking water. The maximum capacity is 60ml.
- Insert your chosen coffee adapter (ground coffee or capsule) into the bottom section.
- Place a cup beneath the dispenser.
- Double click the Power/Mode button to initiate heating and extraction.
- The device will heat the water to 201°F (86°C) in approximately 3-4 minutes before automatically extracting the espresso.
Figure 6.5: One-Button Operation. This image details the specific button presses for different brewing methods.
Figure 6.6: Advanced Heating System. This image highlights the internal heating mechanism for quick water heating.
Note: The maximum capacity of the water tank is 60ml (approximately 2 espresso shots). Around 5-10ml of water may remain inside the machine during brewing, resulting in slightly less coffee in your cup.
The flavor of your coffee may vary depending on the grind size and type of coffee beans. Adjust to your preference for optimal taste.
7. Maintenance and Cleaning
Regular cleaning ensures the longevity and optimal performance of your kejector Portable Coffee Maker.
7.1 Cleaning Mode (Internal Cleaning)
- Ensure no coffee capsules or powder are loaded in the machine.
- Fill the water tank with clean water.
- Place an empty cup under the dispenser.
- Run the coffee maker once by pressing the Power/Mode button. This will flush clean water through the internal system.
7.2 Parts Cleaning (External Cleaning)
- Disassemble the coffee cup, coffee powder holder, and capsule holders.
- Rinse these removable parts thoroughly under running water.
- Wipe the main body of the espresso maker with a damp cloth. Do not immerse the main body in water or other liquids. Never rinse the main body under running water.
- Allow all parts to air dry completely before reassembling or storing.
Figure 7.1: Cleaning Instructions. This image illustrates the cleaning process for the removable parts and emphasizes the warning against immersing the main unit.
8. Troubleshooting
If you encounter issues with your kejector Portable Coffee Maker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Device not turning on | Low battery; Device not charged | Charge the device fully using the USB-C cable. |
| Coffee not dispensing or slow dispensing | Insufficient water; Clogged coffee adapter/filter; Incorrect coffee grind size (too fine); Incorrect capsule type | Ensure water tank is filled; Clean the coffee adapter/filter; Use appropriate grind size; Verify capsule compatibility. |
| Water not heating | Low battery; Incorrect operating mode selected | Charge the device; Ensure you double-clicked the Power/Mode button for Heating Mode. |
| Leaking during operation | Parts not assembled correctly; Damaged seal | Disassemble and reassemble all parts, ensuring they are tightly secured; If leaking persists, contact customer support. |
If the problem persists after attempting these solutions, please contact kejector customer support.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | kejector |
| Model Name | KF-JN-02 |
| Product Dimensions | 3.3"D x 3.3"W x 9.67"H |
| Item Weight | 1.76 pounds (684 grams) |
| Battery Capacity | 7500mAh Lithium Ion (included) |
| Voltage | 5 Volts |
| Operation Mode | Fully Automatic |
| Coffee Input Type | Capsule, Ground Coffee |
| Water Tank Capacity | Max 60ml |
| Heating Time (cold water) | Approx. 3-4 minutes to 201°F (86°C) |
| Pressure | 20-bar |
| UPC | 717073821035 |
Figure 9.1: Product Dimensions and Weight. This image provides a visual representation of the device's size and mass.
10. Warranty and Support
The kejector Portable Coffee Maker comes with a 24-month support period from the date of purchase.
For warranty claims, technical assistance, or any questions regarding your product, please contact kejector customer support through the retailer where you purchased the device or visit the official kejector website.
