Service And Maintenance; Basic Safety Instructions - Siemens SITRANS P320 Compact Operating Instructions

Service and maintenance

7.1

Basic safety instructions

The device is maintenance-free. However, a periodic inspection according to pertinent directives
and regulations must be carried out.
An inspection can include, for example, check of:
• Ambient conditions
• Seal integrity of the process connections, cable entries, and cover
• Reliability of power supply, lightning protection, and grounds
Dust layers above 5 mm
Risk of explosion in hazardous areas.
Device may overheat due to dust build up.
• Remove dust layers in excess of 5 mm.
Use of a computer in a hazardous area
If the interface to the computer is used in the hazardous area, there is a risk of explosion.
• Ensure that the atmosphere is explosion-free (hot work permit).
Releasing button lock
Improper modification of parameters could influence process safety.
• Make sure that only authorized personnel may cancel the button locking of devices for
NOTICE
Penetration of moisture into the device
Damage to device.
• Make sure when carrying out cleaning and maintenance work that no moisture penetrates
SITRANS P320/P420
Compact Operating Instructions, 09/2021, A5E38874562-AD
WARNING
WARNING
CAUTION
safety-related applications.
the inside of the device.
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