1. Important Safety Instructions
Please read all instructions carefully before using the COSTAR Master 9S Fully Automatic Espresso Machine. Retain this manual for future reference.
- Ensure the machine is connected to a grounded power outlet with the correct voltage (220 Volts).
- Do not immerse the machine, power cord, or plug in water or other liquids.
- Keep children away from the machine during operation.
- Unplug the machine before cleaning and when not in use.
- Do not operate the machine with a damaged cord or plug. Contact customer service for repairs.
- Use only whole coffee beans in the bean hopper. Do not use ground coffee, instant coffee, or other substances.
- Exercise caution when handling hot surfaces and steam.
2. Product Overview
The COSTAR Master 9S is a fully automatic bean-to-cup espresso machine designed for convenience and quality. It features an integrated grinder, 19-bar Italian pump, and a milk frother.

Figure 1: Overview of COSTAR Master 9S features, including crema production, powerful steam wand, 30-second fast brew, intelligent cleaning, digital touchscreen control, and customer service details.
3. Setup and First Use
3.1 Unpacking
Carefully remove all packaging materials. Check for any damage during transit. Ensure all included components are present: Cleaning Brush (x1), Coffee Outlet Brush (x1), Sealing Ring (x4).
3.2 Water Tank Installation
Locate the removable water tank (Capacity: 1.1 litres). Fill it with fresh, cold water up to the MAX line. Ensure it is securely placed back into the machine.

Figure 2: Removable water tank.
3.3 Bean Hopper
Open the lid of the bean hopper and pour whole coffee beans into it. The bean hopper capacity is 100g. Close the lid securely.

Figure 3: Coffee beans in the bean hopper.
3.4 Initial Rinse Cycle
Before first use, perform an initial rinse cycle. Plug in the machine and turn it on. The machine will automatically perform a self-cleaning cycle. Place a container under the coffee spout and steam wand to collect water. This primes the system and cleans internal components.
4. Operating Instructions
4.1 Digital Touchscreen Control
The COSTAR Master 9S features a digital touchscreen for easy operation. Icons represent different functions and drink selections.

Figure 4: Digital touchscreen interface.
4.2 Adjusting Grind Settings
The integrated grinder offers 5 adjustable grind settings to suit different coffee bean types and desired brew strengths. Rotate the dial inside the bean hopper to select your preferred grind size. Finer grinds are suitable for espresso, while coarser grinds are better for drip or French press methods.

Figure 5: Fully automatic grinder with grind setting adjustment.
4.3 Brewing Coffee
- Ensure the water tank is filled and the bean hopper contains whole coffee beans.
- Place a cup under the adjustable coffee spout. The spout can be adjusted from 8-14cm in height to accommodate various cup sizes.
- Select your desired drink (Espresso, Americano, etc.) from the touchscreen. For a double cup, select the corresponding icon.
- The machine will automatically grind the beans, tamp them, and brew your coffee using its 19-bar Italian pump and pre-infusion technology for optimal extraction.

Figure 6: Adjustable coffee spout.

Figure 7: Professional espresso extraction with rich crema.
4.4 Using the Milk Frother
The built-in milk frother allows you to create creamy lattes and cappuccinos.
- Fill a pitcher with cold milk.
- Submerge the steam wand into the milk.
- Select the 'Steam' function on the touchscreen.
- Once the milk is frothed to your desired consistency, turn off the steam function.
- Immediately clean the steam wand after use by wiping it with a damp cloth and briefly purging steam to clear any milk residue.
5. Maintenance and Cleaning
5.1 Automatic Cleaning System
The machine features an automatic cleaning function that activates after each brew cycle and upon startup/shutdown. This helps maintain hygiene and coffee flavor.
5.2 Drip Tray and Coffee Grounds Container
Regularly empty and clean the drip tray and the internal coffee grounds container. The drip tray has an indicator to show when it needs emptying.

Figure 8: Removable drip tray.
5.3 Descaling
The machine has a descaling function to remove mineral buildup. Refer to the on-screen prompts or a more detailed guide for the specific descaling procedure. Descaling frequency depends on water hardness and usage.
5.4 General Cleaning
- Wipe the exterior of the machine with a soft, damp cloth.
- Use the provided cleaning brush and coffee outlet brush to clean the coffee spout and other accessible areas.
- Do not use abrasive cleaners or solvents.
6. Troubleshooting
If you encounter issues with your COSTAR Master 9S, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine not turning on | Not plugged in; Power outage; Faulty power cord | Check power connection; Verify power supply; Contact customer service |
| Coffee not dispensing | Water tank empty; Bean hopper empty; Coffee spout blocked | Refill water tank; Refill bean hopper; Clean coffee spout |
| Grinder not pulling beans | Beans stuck; Grinder unit blocked | Gently stir beans in hopper; Clean grinder unit (refer to detailed cleaning guide or customer service) |
| Weak coffee | Grind setting too coarse; Insufficient coffee quantity | Adjust grind to a finer setting; Increase coffee strength setting on touchscreen |
| No steam from wand | Wand blocked; Not heated sufficiently | Clean steam wand; Allow machine to heat up fully before steaming |
If the problem persists after attempting these solutions, please contact COSTAR customer service.
7. Specifications
Detailed technical specifications for the COSTAR Master 9S Espresso Machine:

Figure 9: Product dimensions and key specifications.
| Feature | Specification |
|---|---|
| Brand | COSTAR |
| Model Name | Master 9S |
| Capacity (Water Tank) | 1.1 litres |
| Bean Hopper Capacity | 100g |
| Color | Black |
| Product Dimensions (D x W x H) | 19D x 31.7W x 39.5H Centimeters |
| Material | SS+ABS |
| Operation Mode | Fully Automatic |
| Wattage | 1250 Watts |
| Voltage | 220 Volts |
| Pump Pressure | 19 Bar (Italian Pump) |
| Human Interface Input | Touchscreen |
| Coffee Input Type | Whole Bean |
| Special Features | Adjustable Brew Strength, Auto Clean Function, Auto Shut-Off, Integrated Coffee Grinder, NTC Temp Control |
| Included Components | Cleaning Brush (x1), Coffee Outlet Brush (x1), Sealing Ring (x4) |
8. Warranty and Support
COSTAR provides a 1-year product care warranty for the Master 9S Espresso Machine. For any support or service inquiries, please use the contact information below.

Figure 10: COSTAR Customer Service Information.
Customer Service Contact:
- Phone: +91 9579514004
- Email: Support@costarcosmos.com
- WhatsApp: +91 9579514004
Importer Contact Information:
E-RISING (INDIA) PRIVATE LIMITED, Gala No.: 5 to 9, A-8, Opposite Sonadevi Logistics Park, Lonad Pipeline Road, Village-Lonad, Bhiwandi, Thane, Maharashtra, 421302.
Manufacturer Contact Information:
FOSHAN LXGEEK ROBOT TECHNOLOGY AND SERVICE CO.,LTD, Room A308-1, Research Building A, Fogao High-Tech Think Tank, Nanhai Software & Tech Park, Shishan Town, Nanhai District, Foshan, China. E-mail: lxgeek0757@gmail.com