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Service and maintenance
6.1 Safety instructions
Dangerous voltage at open device
Danger of electric shock when the enclosure is opened or enclosure parts are removed.
• Before you open the enclosure or remove enclosure parts, de-energize the device.
• If maintenance measures in an energized state are necessary, observe the particular
Electrostatic discharges
The electronic components and modules fitted in this device can be destroyed by electrostatic
discharging.
Comprehensive measures (such as the wearing of protective clothing by the maintenance
personnel) must therefore be made to prevent electrostatic discharging wherever they are
manufactured, tested, transported and installed.
Danger of burns resulting from hot surfaces
This symbol indicates a risk of burns from hot surfaces.
• Take appropriate protective measures, for example, wear protective gloves.
• Wait at least 60 minutes after switching off the heat source before starting work on hot parts
6.1.2
Danger of chemical burns for ULTRAMAT 23
Danger of chemical burns for ULTRAMAT 23
The O2 sensor contains acetic acid, which leads to burns on unprotected skin. Therefore, do not
use any tools when replacing the sensor module which could damage the sensor
through sharp edges or squeezing.
If contact with the acid occurs nevertheless, rinse the affected skin immediately with plenty of
water!
48
CAUTION
precautionary measures. Have maintenance work carried out by qualified personnel.
CAUTION
WARNING
of the device!
WARNING
Compact Operating Instructions, 01/2024, A5E45779144002-AB
Series 6 and ULTRAMAT 23
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