Operating The Shutters; Operating The Shutter To The Busbar Compartment In The Switching-Device Compartment - Siemens NXAIR M Operating Instructions Manual

18 Operating the shutters

The shutter to the busbar compartment and the shutter to the connection compartment can be opened
individually. When one shutter is opened, the mechanism of the other one must be padlocked. If both
shutters have to be opened at the same time, locking the other shutter mechanism is omitted.

18.1 Operating the shutter to the busbar compartment in the switching-device compartment

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HINT
Read and understand these instructions before attempting operating works.
DANGER
Electric shock
If the busbars in the busbar compartment have not been isolated, the contacts will
be live at operational high voltage.
Observe the Five Safety Rules.
Before opening the shutter to the busbar compartment:
Verify safe isolation from supply.
Put on personal protective equipment.
Isolate and earth the busbars in the busbar compartment.
Padlock the shutter mechanism on the right side in the switching-device
compartment unless you intend to open the shutter to the connection
compartment, too.
Open the shutter to the busbar compartment safely:
Only use the slip-on lever. Never try to open the shutter mechanism
touching it directly.
Always operate the slip-on lever outside the panel using the handle.
Always close the shutter to the busbar compartment:
Before interrupting operations inside the switching-device compartment.
Immediately after completing operations inside the switching-device
compartment.
CAUTION
Injury
The mechanism for the shutters on the left and right side in the switching-device
compartment can cause injuries by getting squeezed, caught or cut.
Do not remove any parts of the covering.
Do not reach into the shutter mechanism with hands or tools.
Operating the shutters
NXAIR M 143