Grundfos MGE F, Инструкция по эксплуатации

Страница: 22 / 32

English (GB)
22
6. Emergency operation (bypass)
If it is necessary to continue pump operation even if replacement
or repair of the terminal box is not possible, establish emergency
operation by connecting the motor direct to the mains supply.
Emergency operation is illustrated on a label on the cover over
the motor terminals. See fig.
20 .
Prior to establishing emergency operation
Disconnect the mains supply in accordance with local regulations.
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply is switched off and that
it cannot be accidentally switched on.
- During emergency operation, the motor is only
protected by its backup fuse. Normal operation
must therefore be re-established as quickly as
possible.
- Wait 30 minutes before doing any work inside the
product.
Before establishing emergency operation of the
pump, make sure that the motor is OK. You may for
instance meg the motor.
The starting current will increase when the frequency
converter is bypassed.
WARNING
Electric shock
Death or serious personal injury
- Due to the capacitors of MGE-F, touching live
electrical parts may be fatal, even after the mains
supply has been disconnected. Disconnect the
mains supply, and wait at least 30 minutes or the
amount of time stated on the warning label under
the terminal box cover before touching any live
parts.
- Note that the relay may be connected to an
external power supply and still be live after the
mains supply to the motor has been disconnected.