Siemens 1FK7 Series Operating Instructions Manual page 11

Observing the five safety rules
For your personal safety and to prevent material damage when working on the machine,
always observe the safety instructions and the following five safety rules. Apply the five
safety rules in the order stated before starting work at the machine.
1. Isolate the equipment from the power supply
2. Protect against reconnection.
3. Make sure that the equipment is de-energized and in a no-voltage condition.
4. Ground and short-circuit
5. Cover or enclose adjacent components that are still live.
After the work has been completed, undo the previous measures in the reverse order.
Thermal hazard
The surface temperature of the motors can exceed 100 °C.
Do not touch hot surfaces!
Temperature-sensitive components (electric cables, electronic components) must not be
placed on hot surfaces. If the motors overheat, this can destroy the windings/bearings and
permanent magnets may become demagnetized.
Only operate the motors in conjunction with effective temperature monitoring!
Synchronous Motors 1FK7
Operating Instructions, 03/2011, 610.40700.40c
You must also make sure that the auxiliary circuits are also disconnected.
CAUTION
Safety instructions
2.2 Safety and application instructions
9