1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Ascaso Steel PID Programmable Espresso Machine. Designed for both home and semi-professional use, this machine features accurate PID temperature control, programmable pre-infusion, and volumetric shot lengths for consistent espresso extraction. Its robust construction, featuring sleek stainless steel and walnut accents, ensures durability and a refined aesthetic.
2. Safety Information
Please read all safety instructions carefully before operating the machine. Retain this manual for future reference.
- Ensure the machine is connected to a grounded electrical outlet with the correct voltage (120V).
- Do not immerse the machine, cord, or plug in water or other liquids.
- Keep hands and fingers away from hot surfaces and steam outlets during operation.
- Unplug the machine before cleaning or when not in use for extended periods.
- Do not operate the machine with a damaged cord or plug.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
3. Product Overview
The Ascaso Steel PID espresso machine is engineered for precision and durability. Key features include:
- Electronic Group Temperature Control: Digitally displayed PID temperature control, adjustable in one-degree increments for precise brewing.
- Adjustable Over Pressure Valve (OPV): Allows for fine-tuning of brewing pressure.
- Electronic Steam Control: Features an advanced no-burn steam wand for consistent milk frothing.
- Volumetric Programmable Settings: Customize pre-infusion, single shot, double shot, and auto-standby for repeatable espresso quality.
- Thermoblock Technology: Aluminum and stainless steel thermoblock group ensures continuous, unlimited steam with constant pressure, enhanced stability, and minimal energy consumption. Freshwater is drawn for every espresso shot.
- Food-Safe Water Circuit: 100% food-safe AISI 316 stainless steel water circuit prevents metal migration.
- Professional Portafilter: Includes a 58mm professional portafilter with a real walnut wood handle.
- Included Accessories: 5 professional baskets (2 traditional, 2 pressurized, 1 monodose ESE), 1 stainless steel tamper, 1 blank basket for backflushing, and 1 walnut wood portafilter handle.
Figure 3.1: Front view of the Ascaso Steel PID espresso machine in white, showcasing the pressure gauge, control switches, PID display, portafilter, and steam wand.
Figure 3.2: Angled front-right view of the machine, highlighting the portafilter with its walnut handle and the steam wand.
Figure 3.3: Side view of the machine, showing the transparent, removable water reservoir for easy access and refilling.
4. Setup
- Unpacking: Carefully remove all packaging materials. Inspect the machine for any damage.
- Placement: Place the espresso machine on a stable, level, and heat-resistant surface. Ensure adequate ventilation around the machine.
- Water Reservoir: Remove the water reservoir from the side of the machine. Rinse it thoroughly with clean water. Fill the reservoir with fresh, filtered water up to the MAX line. Reinsert the reservoir securely.
- Initial Rinse: Before first use, perform an initial rinse cycle.
- Ensure the machine is plugged into a grounded 120V outlet.
- Turn on the main power switch. The PID display will show the current temperature.
- Once the machine reaches operating temperature, place a cup under the group head.
- Activate the brew switch to run water through the group head for approximately 30 seconds. Repeat this process 2-3 times.
- Open the steam valve to release steam for 15-20 seconds to purge any air from the steam wand.
5. Operation
5.1. Brewing Espresso
- Prepare Portafilter: Grind fresh coffee beans to an espresso-fine consistency. Dose the appropriate amount into your chosen basket (e.g., 14g for a double shot). Distribute evenly and tamp firmly with the included tamper. Wipe any loose grounds from the rim of the portafilter.
- Insert Portafilter: Attach the portafilter to the group head by inserting it and twisting firmly to the right until secure.
- Pre-infusion (if programmed): The machine can be programmed for pre-infusion. Refer to the PID settings section for adjustment.
- Start Extraction: Place your espresso cup(s) under the portafilter spouts. Activate the brew switch. The machine will extract espresso according to your programmed volumetric settings or until manually stopped.
- Stop Extraction: The machine will stop automatically if volumetric settings are used. Otherwise, deactivate the brew switch when the desired volume is reached.
- Remove Portafilter: Carefully remove the portafilter by twisting it to the left. Discard the spent coffee puck.
5.2. Steaming Milk
- Prepare Milk: Fill a stainless steel milk pitcher with cold milk (dairy or non-dairy) to just below the spout.
- Activate Steam: Turn on the steam switch. Wait for the machine to reach steaming temperature (indicated on the PID display).
- Purge Steam Wand: Briefly open the steam valve to purge any condensed water from the wand. Close the valve.
- 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 swirling motion in the milk. For aeration, keep the tip near the surface to introduce air. For heating, submerge the tip deeper.
- Monitor Temperature: Continue steaming until the milk reaches the desired temperature (typically 140-150°F / 60-65°C).
- Clean Steam Wand: Immediately after steaming, close the steam valve. Wipe the steam wand with a damp cloth to remove any milk residue. Briefly open the steam valve again to purge any milk from inside the wand.
5.3. PID and Volumetric Controls
The PID controller allows for precise temperature adjustments and programming of shot parameters. Consult the detailed instructions provided with your machine for specific menu navigation and programming steps for pre-infusion, shot volume, and auto-standby settings.
6. Maintenance
6.1. Daily Cleaning
- Portafilter and Baskets: After each use, remove the portafilter and discard the coffee puck. Rinse the portafilter and basket under hot water.
- Group Head: Use a group head brush to clean any coffee grounds from the group head gasket and shower screen.
- Drip Tray: Empty and rinse the drip tray daily.
- Steam Wand: Always wipe and purge the steam wand immediately after steaming milk.
- Exterior: Wipe down the exterior of the machine with a soft, damp cloth. Do not use abrasive cleaners.
6.2. Backflushing
Perform backflushing regularly (e.g., weekly for daily users) to clean the group head and release valve.
- Insert the blank basket into the portafilter.
- Add a small amount of espresso machine cleaning detergent (e.g., Cafiza) to the blank basket.
- Attach the portafilter to the group head.
- Activate the brew switch for 10-15 seconds, then deactivate for 5 seconds. Repeat this cycle 5-10 times.
- Remove the portafilter, rinse it, and repeat the backflushing process with just water (no detergent) to rinse thoroughly.
6.3. Descaling
While the stainless steel thermoblock is designed to resist limescale buildup, periodic descaling is recommended, especially in areas with hard water. Use a descaling solution specifically designed for espresso machines and follow the manufacturer's instructions. The frequency depends on water hardness and usage.
7. Troubleshooting
This section addresses common issues you might encounter. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No water flow from group head. | Empty water reservoir, airlock in pump, clogged group head. | Refill reservoir. Run pump with steam wand open to clear air. Clean group head. |
| Espresso extracts too slowly or not at all. | Coffee ground too fine, too much coffee in basket, tamped too hard, clogged basket. | Adjust grind coarser. Reduce coffee dose. Tamp lighter. Clean basket. |
| Espresso extracts too quickly. | Coffee ground too coarse, too little coffee in basket, tamped too lightly. | Adjust grind finer. Increase coffee dose. Tamp firmer. |
| No steam from wand. | Steam switch off, machine not at steam temperature, clogged wand. | Turn on steam switch. Wait for temperature. Clean wand tip. |
8. Specifications
Figure 8.1: Dimensions of the Ascaso Steel PID espresso machine.
| Feature | Detail |
|---|---|
| Brand | Ascaso |
| Model Name | Ascaso Steel PID |
| Color | White |
| Product Dimensions (D x W x H) | 12.5" x 10.5" x 15" |
| Item Weight | 57.9 pounds |
| Coffee Maker Type | Semi-Automatic Espresso Machine |
| Exterior Finish | Powder-coated carbon steel and polished stainless steel |
| Special Features | 100% food-safe AISI 316 stainless steel water circuit, Adjustable OPV, Electronic steam control with no-burn steam wand, Freshwater for each espresso shot, Limescale prevention in thermoblock. |
| Included Components | 58mm professional portafilter with walnut handle, 5 professional baskets (2 traditional, 2 pressurized, 1 monodose ESE), stainless steel tamper, blank basket for backflushing. |
9. Warranty and Support
9.1. Product Warranty
Ascaso provides a 12-Month Warranty against defects caused by faulty workmanship and materials for domestic use from the date of purchase. Additionally, a 5-Year Warranty is provided on all thermoblock boilers and groups.
Please retain your proof of purchase for warranty claims.
9.2. Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Ascaso customer support. Refer to the official Ascaso website or your purchase documentation for contact details.
