Repair
Measuring flow rate
Procedure:
1.Fill water tank.
2.Insert pressure plug in capsule inlet.
3.Press down closing handle lightly till pressure plug fits in capsule cage.
4.Pull off holding device. The pressure plug clamps itself to the capsule cage.
5.Position measuring beaker underneath exit tube of pressure plug.
6.Switch on machine.
7.Press button "large cup" after
8.Open valve fully till water begins to flow.
9.Close valve until 12 bar are indicated.
)The manometer must be observed continuously and the pressure regulated using the valve if necessary. With increasing temperature the pressure also increases, if necessary readjust the pressure to 12 bar.
10.Perform measurement for approx. 30 sec.
11.There must be at least
2 | 1 |
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Notice: |
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-With a flow of < 60 ml the pump is defective or there is a leak in the system.
-Large fluctuations in the pressure gauge readings (± 4 bar) during measurement are indicative of a defective pump.
3 |
4 |
8 9 
7
6
5
Service Manual EF 473 / EF 474 | 28 | Version 1.0 en |
