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LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Sealing Boiler Connection

Imported from HubSpot KB export -- 2026-08-14

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Written by Zac P

Before proceeding with this procedure, it's important to drain the steam boiler and allow the machine to fully cool. Always unplug the machine from its power source before disassembling.

Tools required:

  • Phillips screw driver

  • 19mm socket wrench

  • adjustable wrench

  • metal brush / cleaning tool

  • If needed, a new Fill Probe

2. Once the top panel is removed:

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

Lucca_A53_fill_probe-1

Re-install the fill probe, making sure that it's pressed down as far as it will go.

If you need to remove the whole fill probe assembly from the boiler to seal the threads, follow these steps after removing the fill probe from the base fitting as shown above:

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Boiler Connection

Reassemble the machine in the reverse order you repaired it and test it for a leak when the machine is heating the steam boiler.

Don't forget to drain the steam boiler before testing the machine!

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