Maintenance And Repair Work - Siemens SITRANS LR560 Operating Instructions Manual

9.3

Maintenance and repair work

Maintenance during continued operation in a hazardous area
There is a risk of explosion when carrying out repairs and maintenance on the device in a
hazardous area.
• Isolate the device from power.
- or -
• Ensure that the atmosphere is explosion-free (hot work permit).
Humid environment
Risk of electric shock.
• Avoid working on the device when it is energized.
• If working on an energized device is necessary, ensure that the environment is dry.
• Make sure when carrying out cleaning and maintenance work that no moisture
penetrates the inside of the device.
Hot surfaces
Risk of burns during maintenance work on parts having surface temperatures exceeding
70 °C (158 °F).
• Take corresponding protective measures, for example by wearing protective gloves.
• After carrying out maintenance, remount touch protection measures.
Enclosure open
Risk of explosion in hazardous areas as a result of hot components and/or charged
capacitors inside the device.
To open the device in a hazardous area:
1. Isolate the device from power.
2. Observe the wait time specified in Technical data (Page 163) or on the warning sign
before opening the device.
3. Visually inspect sensor inlet and outlet.
Exception: Devices exclusively having the type of protection "Intrinsic safety Ex i" may be
opened in an energized state in hazardous areas.
SITRANS LR560 (mA/HART)
Operating Instructions, 06/2017, A5E34647946-AD
WARNING
WARNING
CAUTION
WARNING
Service and maintenance
9.3 Maintenance and repair work
151