Endress+Hauser Proline Prowirl 72 - Maintenance; Exterior cleaning; Cleaning with pigs; Replacing sensor seals

Proline Prowirl 72 FOUNDATION Fieldbus 7 Maintenance
Endress + Hauser 43
7 Maintenance
The flow measuring system requires no special maintenance.
Exterior cleaning
When cleaning the exterior of measuring devices, always use cleaning agents that do not attack the
surface of the housing and the seals.
Cleaning with pigs
Cleaning with pigs is not possible!
Replacing sensor seals
Under normal circumstances, wetted seals must not be replaced. Replacement is necessary only in
special circumstances, for example if aggressive or corrosive fluids are incompatible with the seal
material.
!
Note!
• The time span between the individual replacements depends on the fluid properties.
• Replacement seals (accessory)Page 44. 
Only Endress+Hauser sensor seals may be used.
Replacing housing seals
The housing seals must be clean and undamaged when inserted into their grooves.
The seals must be dried, cleaned or replaced if necessary.
!
Note!
If the measuring device is used in a dust atmosphere, only the associated housing seals from
Endress+Hauser should be used.