Prepare Servicing Work - Siemens SIMOTICS HV C Operating And Installation Instructions

Maintenance
9.4 Corrective Maintenance
Testing after repair shall be carried out in accordance with EU directives.
Risk of explosion when altering the ignition gap geometry
Changing ignition gap geometries (gap dimensions) as part of repair work according to the
minimum specifications of IEC / EN 60079–1 is not permissible.
This can result in death, serious injury or material damage.
● Obtain the gap dimensions of the electrical machine from the manufacturer for the repair
Risk of losing the IP degree of protection as a result of damaged shaft sealing rings
This can result in death, serious injury, or material damage.
● Replace damaged components immediately.
9.4.2

Prepare servicing work

● The drawings and parts lists do not contain any detailed information about the type and
● Document the type, dimensions and arrangement of the parts so that you will be able to
● Use suitable tools to disassemble the machine.
● Take measures to prevent parts from dropping down before you dismantle them, e.g. by
● The centerings in the shaft extensions have reset threads. Use lifting gear which is suitable
Danger when a rotor falls
Eyebolts in accordance with DIN 580 are unsuitable for suspending the rotor. The rotor can
fall off. This can result in death, serious injury or material damage.
● Use lifting gear which is suitable for the rotor weight and direction of loading.
Machine damage caused by improper repair work
Improper servicing work can damage the machine. This can cause damages and/or faults
which can result in eventual or immediate death, serious injury, or property damage.
● Properly assemble or disassemble the machine.
● Use only suitable tools and equipment.
96
WARNING
or restoration of ignition gap geometries.
dimensions of fixing elements and components. For this reason, you should establish this
information when dismantling them and make a note of it for the purpose of reassembly.
reassemble the machine to its original state.
replacing fastening elements with extra-long screws, threaded bolts or similar. This ensures
that the part is supported after it is pulled off.
for the rotor weight and direction of loading.
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
Operating Instructions 06/2018