Ascaso Steel DUO Espresso Machine User Manual

1. Introduction

Welcome to the world of premium espresso with your new Ascaso Steel DUO Espresso Machine. This manual provides essential information for the proper installation, operation, and maintenance of your machine. Please read it thoroughly before first use to ensure optimal performance and longevity of your appliance.

The Ascaso Steel DUO combines Spanish design with advanced technology, featuring dual thermoblocks, PID temperature control, and volumetric programming for a consistent and high-quality espresso experience.

Figure 1.1: Front view of the Ascaso Steel DUO Espresso Machine, showcasing its stainless steel finish, pressure gauge, control switches, and digital display.

2. Important Safety Information

Please observe the following safety precautions to prevent injury or damage to the machine.

• Read all instructions before using the appliance.
• Do not touch hot surfaces. Use handles or knobs.
• To protect against fire, electric shock, and injury to persons, do not immerse cord, plugs, or 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 injury to persons.
• 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.
• Scalding may occur if the water reservoir lid is removed during the brewing cycle.

3. Unpacking and Initial Setup

3.1 Unpacking

Carefully remove the espresso machine from its packaging. Retain all packaging materials for future transport or storage. Inspect the machine for any signs of damage. If any damage is found, do not operate the machine and contact your retailer.

3.2 Placement

Place the machine on a stable, level, and heat-resistant surface. Ensure adequate ventilation around the machine. Keep it away from direct sunlight, heat sources, and areas with extreme temperature fluctuations.

3.3 Water Reservoir

The Ascaso Steel DUO features a removable water reservoir. Fill the reservoir with fresh, filtered water. Avoid using distilled water as it can negatively impact machine sensors.

Figure 3.1: Side view of the machine highlighting the transparent water reservoir, which should be filled with fresh, filtered water.

3.4 Power Connection

Connect the power cord to a grounded electrical outlet. Ensure the voltage matches the machine's requirements (120V).

4. Components Overview

Familiarize yourself with the main components of your Ascaso Steel DUO Espresso Machine.

Figure 4.1: Angled view of the machine, illustrating key components such as the portafilter, steam wand, drip tray, and control panel with switches and digital display.

• Pressure Gauge: Displays brewing pressure.
• Control Switches: For power, brewing, and steam functions.
• Digital Display (PID): Shows temperature, shot timer, and allows for volumetric programming.
• Portafilter: 58mm professional portafilter with a walnut wood handle.
• Group Head: Where the portafilter locks in for brewing.
• Steam Wand: No-burn steam wand for frothing milk.
• Hot Water Spout: For dispensing hot water.
• Drip Tray: Collects excess water and coffee.
• Water Reservoir: Removable tank for water supply.

5. Operating Instructions

5.1 Initial Start-up and Priming

1. Ensure the water reservoir is filled.
2. Turn on the machine using the main power switch. The PID display will show the current temperature.
3. Allow the machine to heat up to the set brewing temperature (typically around 90-95°C). This usually takes a few minutes due to the dual thermoblock system.
4. To prime the pump, place a cup under the group head and activate the brew switch until water flows consistently. Repeat for the hot water spout and steam wand.

5.2 Brewing Espresso

1. Prepare the Portafilter: Grind fresh coffee beans to an espresso-fine consistency. Dose the appropriate amount (e.g., 14-18g for a double shot) into the 58mm portafilter basket. Distribute evenly and tamp firmly.
2. Lock in Portafilter: Attach the portafilter to the group head, ensuring it is securely locked.
3. Set Volumetric Shot: Use the PID display and controls to select your desired volumetric setting for a single or double shot. The machine supports programmable pre-infusion.
4. Start Brewing: Activate the brew switch. The machine will automatically dispense the programmed volume of espresso. The PID display will show a shot timer.
5. Monitor Extraction: Observe the espresso flow. It should be a steady, honey-like stream. Adjust grind size or dose as needed for optimal extraction.
6. Remove Portafilter: Once brewing is complete, carefully remove the portafilter and discard the spent coffee puck.

5.3 Steaming Milk

The dual thermoblock system allows for simultaneous brewing and steaming without significant wait times.

1. Prepare Milk: Fill a stainless steel milk pitcher with cold milk, typically to just below the spout.
2. Activate Steam: Turn on the steam switch. Allow the steam wand to purge any condensed water into the drip tray by briefly opening the steam valve.
3. Steam Milk: Immerse the tip of the steam wand just below the surface of the milk. Open the steam valve fully. Position the wand to create a whirlpool effect, incorporating air for texture (stretching) and then submerging it deeper to heat the milk (texturing).
4. Monitor Temperature: Steam until the pitcher becomes too hot to touch, or use a thermometer to reach desired temperature (e.g., 60-65°C / 140-150°F).
5. Clean Wand: Immediately after steaming, turn off the steam switch, wipe the steam wand with a damp cloth, and purge it briefly to clear any milk residue.

6. Maintenance and Cleaning

Regular cleaning and maintenance are crucial for the performance and lifespan of your espresso machine.

6.1 Daily Cleaning

• Portafilter and Baskets: Rinse the portafilter and filter baskets after each use.
• Group Head: Flush the group head with water after removing the portafilter to rinse away loose coffee grounds.
• Steam Wand: Wipe and purge the steam wand immediately after each use.
• Drip Tray: Empty and rinse the drip tray daily.
• Exterior: Wipe down the stainless steel exterior with a soft, damp cloth.

6.2 Weekly Cleaning (Backflushing)

Backflushing cleans the group head and internal components.

1. Insert the blind filter basket into the portafilter.
2. Add a small amount of espresso machine cleaning detergent (e.g., Cafiza) to the blind filter.
3. Lock the portafilter into the group head.
4. Activate the brew cycle for 10-15 seconds, then stop. Repeat this process 5-10 times.
5. Remove the portafilter, rinse it, and repeat the backflushing process with just water to rinse away detergent.

6.3 Descaling

While the stainless steel thermoblock design minimizes limescale buildup, periodic descaling is recommended, especially in areas with hard water. Follow the instructions of a suitable descaling solution.

The machine also features a programmable automatic cleaning mode, refer to the PID menu for activation.

7. Troubleshooting

This section addresses common issues you might encounter.

8. Specifications

Figure 8.1: Product dimensions for planning counter space.

9. Warranty and Support

Your Ascaso Steel DUO Espresso Machine is manufactured by Ascaso. For specific warranty details, please refer to the documentation included with your purchase or contact Ascaso customer support directly.

Extended protection plans may be available for purchase separately:

• 3-Year Protection Plan
• 4-Year Protection Plan
• Complete Protect (monthly subscription)

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Ascaso customer service.

Manufacturer: Ascaso