Service And Maintenance; Maintenance; Unit Cleaning - Siemens SITRANS F Operating Instructions Manual

Service and maintenance

7.1

Maintenance

The device is maintenance-free, however, a periodic inspection according pertinent
directives and regulations must be carried out.
An inspection can include check of:
● Ambient conditions
● Seal integrity of the process connections, cable entries, and cover screws
● Reliability of power supply, lightning protection, and grounds
Instrument cleaning
During the setting into operation of new systems, residual materials are conveyed in the
medium and could adhere to the variable area meter. In this case we recommend cleaning
the instrument after a short period of operation. In particular ferromagnetic substances such
as weld beads could lead to the shut-down of the equipment. A magnet filter (accessory)
should be mounted in front of the instrument if such fragments cannot be avoided in routine
operation.
7.2

Unit cleaning

Depending on the measuring substances, contamination, abrasion or chemical reactions
could affect the measuring orifice and the float and hence have an impact on the measuring
accuracy. In this case the instrument should be dismounted and cleaned with suitable agents
including the rotameter.
Aggressive cleaning agents
Do not damage the device mechanically by hard objects or by aggressive cleaning agents.
Device corrosion
If attacks are detected on the measuring orifice or the float, they must be recalibrated or
replaced.
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01
CAUTION
WARNING
7
47