Suspected malfunction
If you suspect a malfunction due to unusual product reactions, isolate the device from power.
Immediately inform qualied personnel to check the function and ensure that the product
functions correctly.
The following signs can indicate a malfunction:
• Unusual or no functioning
• Unusual heat generation
• Smoke development
Repair
Send the device back to the manufacturer for repair, with details of the malfunction. The device
must only be repaired there.
Service and maintenance
10.1 Service and maintenance
NCU 1740
92 Equipment Manual, 10/2021, A5E51087503B AA
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