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LUCCA A53 Mini / Mini Vivaldi: Inspecting and Cleaning the Water Tank Valve

A working water tank valve is essential for getting water from your machine's reservoir to the pump, while preventing water from ending up all over your counter.

Tools Needed:

  • 17mm, 15mm, 14mm crescent wrenches

1. Remove the valve from the water tank using the 17mm crescent wrench on the brass retaining nut and the 15mm wrench on the valve tool slots.
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2. Disassemble the valve using the 14mm and 15mm crescent wrenches.

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3. Inspect the internal components for build-up. Clean or replace the plunger o-ring gasket if necessary.

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4. Reassemble the valve and re-install in the water tank. Replace the tank-interface o-ring gasket if necessary. Be careful not to crack the tank wall by over-tightening the brass retaining nut.

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