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3.5
Electrical connection
3.5.1
Electrical circuit diagram
DANGER
Life-threatening danger due to electric shock
Live units and exposed connection cables can generate an electric shock and cause severe accidents.
➢ Work on electrical connections must be carried out exclusively by trained, qualified electricians.
➢ Ensure that the unit is voltage-free before routing all electrical connections.
Power cable
Alarm
Pos
Designation
B1
Thermostat
X1
Plug contact
X6
Terminal contact
F1
Internal fuse
Only cooling units with the rated operating voltage 400V / 460V can be optionally connected to a different mains
voltage.
▪ Reconnection takes place via the supply of the primary side of the transformer.
Operating manual PWS and PWI 6302C 086100047c © Pfannenberg GmbH
Cover
Pos
Designation
M1
Fan
X3
Plug contact
X40
Ground terminal contact
Pos
Designation
T1
Transformer
X5
Terminal contact
Y1
Solenoid valve
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