If you're an espresso enthusiast, you know that the right pressure is crucial for pulling the perfect shot. Low pressure in your Breville/Sage espresso machine can lead to weak, under-extracted coffee that lacks the rich flavour and crema you love. If you're facing this issue, don't worry! Here’s a comprehensive guide to help you troubleshoot and fix low pressure on your Breville/Sage espresso machine.

Step 1: Check the Water Source and Reservoir

First things first, ensure your machine has enough water:

• Water Reservoir: Make sure the water reservoir is full and properly seated. A misaligned or empty reservoir can disrupt water flow.

• Water Quality: Use fresh, clean water. Avoid distilled water as it lacks minerals needed for proper pressure. If you have hard water in your area, try using a water filter to avoid a build up of scale in your machine.

Step 2: Clean and Descale the Machine

Cleaning your espresso machine is crucial for several reasons, all of which contribute to the quality of your coffee, the longevity of your machine, and your health. Cleaning on a regular basis will help with espresso consistency, preventing malfunction, general cleanliness and may even extend your machine’s lifespan.

• Cleaning: Follow the manufacturer’s instructions for regular cleaning. Remove and clean the portafilter, basket, and group head.

• Descaling: Mineral build-up can obstruct water flow. Descale your machine periodically using a descaling solution designed for espresso machines. I live in a very hardwater area so I do this on a monthly basis.

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Step 3: Inspect the Portafilter and Basket

Ensure your portafilter and basket are in optimal condition:

• Portafilter Position: The portafilter should be securely locked into place.

• Basket Cleanliness: A clogged basket can restrict water flow. Clean it thoroughly with a brush and check for any blockages. I soak my basket in a Puly Caff and water solution weekly to help remove coffee residue build up.

Step 4: Adjust Grind Size and Coffee Amount

The grind size and amount of coffee can significantly impact pressure:

• Grind Size: Use a fine to medium grind size. Too fine a grind can clog the basket and cause low pressure by restricting the water flow too much. Try experimenting with different grind sizes until you are able to product a double espresso shot in around 28-32 seconds. If it takes longer, increase your grind size, if faster, reduce the grind size.

• Coffee Amount: Use the correct amount of coffee, typically around 18-20 grams for a double shot. Overfilling can impede water flow.

Step 5: Check for Blockages

Blockages can occur in various parts of the machine:

• Steam Wand: Ensure the steam wand is not blocked. Clean it regularly to maintain proper steam pressure.

• Water Flow: Run water through the machine without the portafilter attached. Consistent water flow indicates no internal blockages. If the water flow is slower than usual, this could be sign that there may be a blockage internally so you should descale your machine to remove any scale build up.

We recommend using an Espresso machine brush set (View on Amazon) to clear away any stuck coffee grounds.

Step 6: Inspect the Pump and Pressure Gauge

Listen and observe for signs of pump issues:

• Pump Sound: A weaker than usual sound from the pump might indicate a problem.

• Pressure Gauge: If your model has a pressure gauge, monitor it during operation. It should reach the optimal pressure zone for espresso extraction.

Step 7: Check Gaskets and Seals

Worn out gaskets and seals can cause pressure leaks:

• Group Head Gasket: Inspect the group head gasket for wear and tear. Replace it if it looks worn out or damaged.

When to Seek Professional Help

If you’ve tried all the above steps and still experience low pressure, it might be time to contact Breville customer support or a professional technician. Internal components like the pump or valves might need inspection or replacement.

Summary

Fixing low pressure on your Breville/Sage espresso machine involves a series of checks and regular maintenance. By ensuring the water source is adequate, keeping the machine clean, using the right grind size and amount of coffee, and inspecting for blockages and worn parts, you can enjoy consistently great espresso. If all else fails, professional servicing can get your machine back in top shape. Happy brewing!