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11.3
Maintenance and repair work
CAUTION
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.
11.3.1
Defining the maintenance interval
WARNING
No maintenance interval has been defined
Device failure, device damage, and risk of injury.
● Define a maintenance interval for recurring tests depending on the use of the device and
your own experience.
● The maintenance interval will vary from site to site depending on corrosion resistance.
WARNING
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).
WARNING
Impermissible accessories and spare parts
Risk of explosion in areas subject to explosion hazard.
● Only use original accessories or original spare parts.
● Observe all relevant installation and safety instructions described in the instructions for
the device or enclosed with the accessory or spare part.
Service and maintenance
11.3 Maintenance and repair work
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA
177