4
D5 MAINTENANCE......................................................................................................................... Pag. 16
D5.1 DE-LIMING ...................................................................................................................... Pag. 16
D5.2 Prolonged period of inactivity...........................................................................................Pag. 17
D5.3 Preventive maintenance ..................................................................................................Pag.17
D6 RESIDUAL RISKS ..................................................................................................................... Pag. 17
E TROUBLESHOOTING ..................................................................................... Pag. 18