Endress+Hauser Proline Prowirl 73 - Maintenance; Exterior Cleaning; Pipe Cleaning; Replacing Seals

Maintenance Proline Prowirl 73
58 Endress+Hauser
7 Maintenance
The flow measuring system requires no special maintenance.
7.1 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.
7.2 Pipe cleaning
Do not use a pipe cleaning pig!
7.3 Replacing seals
7.3.1 Replacing sensor seals
Under normal circumstances, wetted seals need 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 replacement procedures depends on the fluid properties.
• Replacement seals (accessory) (ä 59).
Only Endress+Hauser sensor seals may be used.
7.3.2 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 device is used in a dust atmosphere, only use the associated Endress+Hauser housing seals.