NOTICE
Risk of property damage from excess voltage
Incorrect or excessive mains voltage will destroy the motor.
►
Always observe the motor rating plate specifications.
►
Route the mains connection in accordance with locally applicable provisions.
►
Always provide a suitable mains fuse to protect the motor and supply cable in the event of a fault.
NOTICE
Property damage from the voltage range being set incorrectly
Recommissioning after longer downtimes of the vacuum pump or after changing the oil requires the
current settings to be checked.
►
Before switching the vacuum pump on each time, check the currently set voltage range.
►
Make changes to the voltage range only after the vacuum pump has been disconnected from the
mains.
The magnetic coupling does not offer an overload protection.
The magnetic coupling's torque is so strong that it does not provide any overload protection
for the motor.
Depending on the pump type, there are different motor designs or mains voltages.
●
Single-phase motor with replaceable voltage range,
─
thermal protection switch,
─
mains switch and
─
Rubber connector
In the event of excess temperature, the thermal protection switch interrupts the motor current, but does
not offer a permanent cutoff of the motor.
Fig. 8: Motor circuit diagram, single-phase motor with switch
Installation
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