Checking For Leaks And Pump Pressure (2) - Nespresso Essenza EF 347 Service Manual

Function Tests
Checking for leaks and pump pres-
sure (2)
Procedure (continued):
8. Press any button to start the coffee
machine. Press coffee button after
heating-up.
9. Open valve and leave water to run out for
approx. 10 sec.
10. Fully close valve. The pressure will rise
rapidly initially and stabilise between
16 - 19 bar (check of pump pressure).
The pressure will rise slowly due to
the temperature increase.
If the pressure exceeds 23 bar, the
machine has to be switched off and
pressure released through the pres-
sure valve.
11. Perform visual and acoustic checks on all
pressurized connections.
The pump must not be in operation
for longer than 50 sec. without water
flow.
12. Open valve to empty pressure gauge.
Service Manual EF 347 / EF 348
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Version 1.0 en