1. Introduction
Thank you for choosing the Caso Espresso Gourmet Stainless Steel Portable Filter Machine. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new espresso machine. Please read it thoroughly before first use and keep it for future reference.
2. Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and/or injury to persons.
- Read all instructions carefully before operating the appliance.
- Do not touch hot surfaces. Use handles or knobs.
- To protect against fire, electric shock, and personal injury, do not immerse cord, plugs, or the appliance in water or other liquid.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts, and before cleaning the appliance.
- Do not operate any appliance with a damaged cord or plug or after the appliance malfunctions, or has been damaged in any manner.
- The use of accessory attachments not recommended by the appliance manufacturer may result in fire, electric shock, or personal injury.
- Do not use outdoors.
- Do not let cord hang over edge of table or counter, or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Always attach plug to appliance first, then plug cord into the wall outlet. To disconnect, turn any control to "off", then remove plug from wall outlet.
- Do not use appliance for other than intended use.
- Use extreme caution when disposing of hot steam.
- This appliance is intended for household use only.
3. Product Overview
Familiarize yourself with the components of your Caso Espresso Gourmet machine.

Figure 3.1: Front view of the Caso Espresso Gourmet machine, showing two espresso shots being dispensed into double-walled glasses. The pressure gauge is visible at the top center.

Figure 3.2: Angled view of the Caso Espresso Gourmet machine, highlighting the portafilter attached and the steam wand on the right side. The water tank is visible on the back right.

Figure 3.3: Included accessories: a stainless steel milk pitcher, a tamper with a black wooden handle, a measuring spoon, a portafilter with a black handle, and three different filter baskets (for 1 cup, 2 cups, and ESE pods).
Components:
- Control Panel: Soft touch buttons for power, single espresso, double espresso, and steam.
- Pressure Gauge: Displays the brewing pressure.
- Portafilter: High-quality stainless steel holder for coffee grounds.
- Filter Baskets: Three types included (1-cup, 2-cup, ESE pod).
- Steam Wand: For frothing milk and dispensing hot water.
- Water Tank: Removable, transparent 1.5-liter capacity.
- Drip Tray: Removable stainless steel with float indicator.
- Cup Warming Plate: Located on top of the machine.
- Tamper: For compacting coffee grounds.
- Measuring Spoon: For accurate coffee dosing.
- Milk Pitcher: Stainless steel, for frothing milk.
4. Initial Setup
- Unpacking: Carefully remove all packaging materials. Keep packaging for future storage or transport.
- Placement: Place the machine on a stable, flat, heat-resistant surface, away from water sources and direct sunlight. Ensure adequate ventilation.
- Water Tank Installation:Remove the water tank from the back of the machine. Wash it with mild detergent and rinse thoroughly. Fill the tank with fresh, cold water up to the MAX line. Place the tank back into its position, ensuring it is seated correctly.

Figure 4.1: A hand lifting the lid of the water tank on the Caso Espresso Gourmet machine, showing the transparent tank filled with water.
- First Use / Priming:
- Plug the machine into a grounded electrical outlet.
- Press the power button to turn on the machine. The indicator lights will flash as the machine heats up.
- Place a large cup under the portafilter head (without portafilter) and under the steam wand.
- Once the lights are solid, press the single espresso button to run water through the brewing head until water flows out. Repeat this process 2-3 times.
- Turn the steam knob to the steam position to release water/steam from the steam wand until a steady stream of steam appears. Close the steam knob.
- This process primes the pump and cleans the internal components.
5. Operating Instructions
5.1. Making Espresso
- Preheat Cups: Place your espresso cups on the cup warming plate on top of the machine.

Figure 5.1: Two white espresso cups resting on the heated top surface of the Caso Espresso Gourmet machine, designed to pre-warm cups.
- Prepare Portafilter:
- Select the appropriate filter basket (1-cup, 2-cup, or ESE pod).
- For ground coffee, add fresh, finely ground espresso coffee to the filter basket. Use the measuring spoon for accurate dosing (approx. 7g for 1 cup, 14g for 2 cups).
- Distribute the coffee evenly and tamp firmly with the tamper. Ensure the coffee bed is level.
- Wipe any excess coffee from the rim of the portafilter.
- Attach Portafilter: Insert the portafilter into the group head from the left and rotate it firmly to the right until it is securely locked.
- Brew Espresso:Place your preheated cup(s) under the portafilter spouts. Press the single or double espresso button. The machine will automatically dispense the correct amount of espresso. The pre-function ensures even extraction.

Figure 5.2: Close-up view of espresso flowing from the portafilter spout into a clear glass, demonstrating the extraction process.
- Monitor Pressure: Observe the pressure gauge during brewing. The optimal pressure range is typically indicated on the gauge.
- Remove Portafilter: Once brewing is complete, wait a few seconds for the pressure to dissipate. Carefully remove the portafilter by rotating it to the left. Dispose of the used coffee grounds.
5.2. Frothing Milk
- Prepare Milk: Fill the stainless steel milk pitcher with cold milk (dairy or non-dairy). Do not fill more than one-third full.
- Activate Steam: Press the steam button on the control panel. Wait for the steam indicator light to become solid, indicating the machine has reached steaming temperature.
- Purge Steam Wand: Place an empty cup under the steam wand and briefly turn the steam knob to release any condensed water. Close the knob.
- Froth Milk:Immerse the tip of the steam wand just below the surface of the milk. Turn the steam knob fully open. Angle the pitcher slightly to create a vortex. Move the pitcher up and down to incorporate air and heat the milk. Continue until desired foam consistency and temperature are reached.

Figure 5.3: A hand holding a stainless steel milk pitcher under the steam wand of the Caso Espresso Gourmet machine, demonstrating the milk frothing process.
- Clean Steam Wand: Immediately after frothing, turn off the steam knob. Wipe the steam wand with a damp cloth to remove any milk residue. Briefly purge the wand again to clear any internal milk.
6. Maintenance and Cleaning
Regular cleaning ensures optimal performance and extends the life of your espresso machine.
6.1. Daily Cleaning
- Drip Tray: Empty and rinse the drip tray daily. The float indicator will rise when it needs emptying.
- Portafilter and Filter Baskets: After each use, remove coffee grounds and rinse the portafilter and filter baskets under hot water. Use a brush to remove any stubborn residue.
- Steam Wand: As described in Section 5.2, clean immediately after each use.
- Exterior: Wipe the exterior of the machine with a soft, damp cloth. Do not use abrasive cleaners or solvents.
6.2. Weekly Cleaning / Backflushing
- Group Head: Use a damp cloth to wipe the shower screen and gasket of the group head.
- Backflushing (if applicable): If your machine supports backflushing, use a blind filter basket and follow the manufacturer's instructions for backflushing with or without a cleaning tablet.
6.3. Descaling
Descaling is crucial to remove mineral buildup and maintain machine performance. The frequency depends on water hardness and usage, typically every 2-3 months.
- Use a commercial descaling solution specifically designed for espresso machines. Follow the instructions on the descaling solution packaging.
- Empty the water tank and fill it with the descaling solution mixed with water according to the product's instructions.
- Place a large container under the group head and steam wand.
- Run approximately half of the solution through the group head by pressing the espresso button.
- Open the steam knob and run the remaining solution through the steam wand.
- Turn off the machine and let it sit for 15-20 minutes to allow the solution to work.
- Empty and rinse the water tank thoroughly. Fill it with fresh water.
- Run several full tanks of fresh water through both the group head and steam wand to rinse out any descaling solution residue.
7. Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| No coffee dispenses / Slow flow |
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| Coffee is watery / No crema |
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| Steam wand not producing steam |
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| Machine leaks water |
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8. Specifications
| Feature | Detail |
|---|---|
| Brand | Caso Design |
| Model Name | 01820 |
| Product Dimensions | 14.96"D x 7.68"W x 12.01"H |
| Item Weight | 9.02 pounds |
| Color | metallic silver |
| Pump Pressure | 19 Bar (Ulka Pump) |
| Water Tank Capacity | 1.5 Litres |
| Coffee Input Type | Coffee Powder, ESE Coffee Pods |
| Special Features | Removable Tank, Cup Warmer, Milk Frother, Pressure Gauge, Automatic Prefunction |
| Included Components | 3 filters (1 or 2 cups and coffee pods), Stainless Steel Milk Pitcher, Press with wooden handle, Stainless Steel Measuring Spoon |
| Voltage | 230V |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or visit the official Caso Design website. Keep your proof of purchase for any warranty claims.
Manufacturer: Caso

