Siemens SINUMERIK ONE PPU 1740 Series Equipment Manual page 62

Service and maintenance
Protect the device from environmental effects
Protect the device against the following environmental factors:
● Direct sunshine and heat sources
● Mechanical vibration and shock
● Dust
● Humidity
● Strong magnetic fields
Suspected malfunction
If you suspect a malfunction due to unusual product reactions, isolate the device from power.
Immediately inform qualified 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.
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Equipment Manual, 01/2019, A5E47615272B AA
PPU 1740