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4.0 MAINTENANCE
4.1 GENERAL INSTRUCTIONS
The inspection and maintenance interventions are strictly linked to the type of installation. It is
therefore advisable to perform a preventive maintenance, which periodicity, if not established by
the regulations, is relevant to:
- the quality of the transported fluid;
- the cleanness and preservation state of the pipelines in the plant; in general, after the first start
of the plants, more frequent maintenance services are required because of the poor cleanness
inside the pipelines
It is recommended to periodically check the intervention value of the valve according to the
provisions in force on the place of installation and, depending on the needs, perform a
preventive maintenance of the valve and of its pilot.
The periodical inspections concern also the state of the external surface of the valve. In particular
the surface protections shall be restored ( usually the varnishing) in case they are worn.
Before performing any intervention, make sure that the plant section where you operate has been
upstream and downstream cut-off and that the pressure in the concerned pipeline section has
been discharged.
Moreover, make sure to be have a series of recommended spare parts. The spare parts shall be
Pietro Fiorentini Spa genuine spare parts.
NOTE. The use of non genuine spare parts relieves the manufacturer from any liability.
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