Coffee & Espresso
Espresso machine below pressure
Espresso machine producing weak shots or low group pressure
Safe preliminary checks permitted
Low pressure gauge reading, poor extraction
Likely causes
- · Scale in the group and restrictors
- · Water softener exhausted
- · Pump or expansion valve wear
Safe preliminary checks
- · Confirm the inlet water is on and the softener has salt
- · Check the group is not blocked by a cleaning cycle
- · Compare the gauge reading across all groups
When it needs a professional
Boiler and pump work requires a trained espresso technician.
Stop immediately if
- · Smoke, burning smell or water on live parts
- · Refrigerant leak, gas odour or pressure vessel noise