Power Supply - WMF 800 Manual

Engineering
2/8.2

Power supply

The power supply is connected with a plug to the controller. The controller supplies
the transformer. The transformer delivers voltage for:
• A 12 V part for supplying the logic,
• A 24 V part for the 24 V loads such as, for example, the magnetic piston pump, fan,
air pump, heat relay,
There are various inputs and outputs on the CPU board; see table.
Toroidal transformer
Switching on the 12/24 V supply for the coffee machine:
™ Turn on the ON/OFF switch on the operator control panel
™ Via the 5 V power supply input the controller switches on
Technical data: toroidal transformer
5.1 V voltage
24 V voltage
Mains input
maximum voltage compliance at 230 V
Line frequency
Technician instructions
If the 5 V supply is overloaded, the coffee machine switches off because the controller
has no power.
If the internal device fuse has tripped, as a rule the power supply is defective and the
power supply must be replaced.
Error without display message
• No 12 V and no 24 V available for controller
• No 5 V available
T2-46
oadable up to 1 A
oadable up to 7 A
Nominal voltage 230 V (as delivered)
or nominal voltage 120 V
175 - 264 V
47 - 63 Hz
See troubleshooting chapter part 6
© WMF 800 / 900 / 1000 S / 1000 pro S Edition 07/2014 - KMT