KBR multicount D5-0-LCD-1DO-3P-75A-MID Quick Manual page 7

To ensure proper and safe operation of the device, ensure that it is
transported, stored, installed, assembled, and carefully operated and
maintained in accordance with the specifications.
If the device has any visible damage it is considered unfit for use and
must be disconnected from the power supply! Troubleshooting, repairs
and maintenance work may only be carried out at our plant or after
contacting our customer service team .
Unauthorized opening of the device will render your warranty null and
void . Correct functioning can no longer be guaranteed!
Opening the device may expose live parts . Do not operate open
devices under any circumstances!
All input and output cables of systems that are at risk from lightning
strikes must be fitted with lightning protection.
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