● Check the insulators, connectors and cable connections in the terminal box.
● Replace the damaged components if necessary.
WARNING
Short-circuit hazard
Damaged components can cause short circuits, possibly resulting in death, serious injuries
and property damage.
Replace damaged components.
9.3 Repair
When carrying out any work on the machine, observe the general safety instructions
(Page 13) and the specifications contained in EN 50110‑1 regarding safe operation of electrical
equipment.
Note
If the motor has to be transported, please observe the information and instructions in the
"Transport" (Page 36) section.
9.3.1 Screws with preCOTE coating
The motor can partly be fitted with screws with preCOTE coating. To ensure screw locking,
use new screws with preCOTE coating during assembly/repair. As an alternative, use normal
screws with a threadlocker such as Loctite.
If roller-contact bearings with an insulated design are installed, use roller bearings of the same
type as spare parts. This will prevent any bearing damage being caused by bearing currents.
9.3.2 Removing and installing the protecting ring
The protecting ring acts as an outer bearing seal. It sits on the shaft outside the bearing end
shield.
Disassembly
● Once the coupling is detached, you can remove the protective ring from the shaft. After it
has been removed, the protective ring will be deformed and must be replaced.
Maintenance
9.3 Repair
SIMOTICS M-1PH8 1PH818., 1PH822.
114 Operating Instructions 07/2016
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