Riello UPS Sentinel Dual SDL 8000 Manuel D'installation Et D'utilisation page 68

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Secure the cable guide and the seal stop to the flange, close the drawer and secure it with the screw removed
previously.
A WARNING LABEL MUST BE AFFIXED TO ALL MAINS POWER ISOLATING SWITCHES INSTALLED FAR FROM THE
UPS AREA, IN ORDER TO REMIND SUPPORT SERVICE PERSONNEL THAT THE CIRCUIT IS CONNECTED TO A UPS.
THE LABEL MUST CARRY THE FOLLOWING MESSAGE:
ISOLATE THE UNINTERRUPTIBLE POWER SYSTEM (UPS)
BEFORE WORKING ON THIS CIRCUIT
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