Service Manual EF 472
34
F U N C T I O N T E S T S
Test run
5) Place the measuring cup under the
drain hose of the pressure tester.
6) Fill and insert the water tank.
7) Connect the mains cable.
8) Switch on the coffee machine.
9) After heating up, press the "Small cup"
button.
10) Open the valve and let the water flow
for approximately 10 sec. out of the
drain hose.
11) Close the valve completely. The pres
sure stabilizes after increasing briefly
between 16 19 bar (pressure check).
The pressure increases slowly with
increasing temperature. Should the
pressure exceed 23 bar, switch off
the coffee machine and release the
pressure by opening the valve.
