Service 17
2.4 Power supply
Using the power supply – 33 2628 3100
WMF 1500S+; WMF 5000S+, WMF 9000S+; WMF 9000F
Notes:
o The spare part power supply 154C does NOT have a mounting bracket
o Jumper J4 is correctly placed across pins 2 and 3.
Important: If the jumper is incorrectly placed on 1 and 2, then the machine can no longer be switched off
The power supply can be run at either 115 V (jumper plugged in at J5) or 230 V input voltage. It converts an unstabilized input voltage into stabilized 5 V, 24 V,
and 30 V DC voltages.
When the machine is switched on using the On/off button, the DC voltages are provided by the power supply.
In case of a error, such as overcurrent or short circuit, the power supply cuts off to protect itself and the power stage.
> If an error is detected 6 times within one minute, then the power supply shuts off and can be reset only by briefly disconnecting the entire machine from the
grid.
The power supply is generally set to 154C on the software side.
USA machine versions are an exception. These MUST be set to 154C-US in order to comply with the law in the USA. The setting results in someone poorer
dispensing consistency for milk foam quality in the Dynamic Milk model.
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