3.7
SYSTEM FILTER
The unit is sold with a filter that must be installed on the system return pipe in order to preserve the proper functioning of the system.
The filter can be cleaned periodically and when necessary.
In order to preserve the proper functioning of the manifold within the hydraulic circuit, it is necessary for the inspection Y-fil-
ter to work in a horizontal position.
3.8
TROUBLESHOOTING
Maintenance operations must be carried out by an authorised company (e.g. Authorised After-Sales Technical Assistance Cen-
tre).
Noise due to air in the system.
Check the correct deaeration of the system.
Make sure the system pressure and expansion tank factory-set pressure values are within the set limits.
The factory-set pressure values of the expansion vessel must be 1.0 bar, the value of system pressure must be between 1 and 1.2 bar.
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