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26. Measure hot water temperature with
electronic thermometer: Place
temperature sensor in water flow
approx. 3 mm under valve outlet.
The hot water temperature should
be between 80 °C to 90 °C (176 °F
to 194 °F) and must never exceed
98 °C (208.4 °F).
28. Wait until coffee machine is in eco
mode. Then unplug coffee machine.
29. Watch manometer for 30 sec.
The system is leakproof, if the
pressure drop is less than 1.5 bar
within 30 sec.
10
0
bar
approx.
3 mm
27. Close pressure control valve progres-
sively to reach Pmax.
Maximum pressure must be within
11.5 - 14.5 bar.
30 sec
30. Release the pressure by opening the
pressure control valve completely.
31. Remove an empty recipient.
F I N A L T E S T S
11.5 bar
10
15
14.5 bar
15
0
bar
no leakage
Lumio service manual
leakage
If the pressure test
failed continue with
the leakage check, other-
wise remove the test
equipment.
75
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Troubleshooting
