Service Manual EF 472
32
F U N C T I O N T E S T S
6
F U N C T I O N T E S T S
6.1 Measure flow rate
1) Fill the water tank.
2) Push the connector adapter into the
capsule bay.
3) Carefully close the handle, until the
adapter sits firmly in the capsule cage.
4) Pull out the mount. The adapter locks
with the capsule cage.
5) Place a measuring cup under the drain
hose of the pressure tester.
6) Switch on the coffee machine.
7) After heating up, press the "Small cup"
button.
8) Open the valve until water begins to
flow.
9) Close the valve until the pressure
gauge indicates 12 bar.
Constantly monitor the pressure
gauge and if required readjust the
valve. As the temperature
increases, so does the pressure,
readjust the pressure to 12 bar
when required.
10) Carry out measurement for approx. 30
sec.
11) At least 60120 ml of water must be in
the measuring cup.
Notices:
•
Should < 60 ml leak out, then the pump
is defective or there is a leak in the
water system.
•
Large deviations in indicated pressure
while measuring (± 4 bar) means that
the pump is defective.
