1-50 CHAPTER 1: GETTING STARTEDRenewing the Internal Protection FuseCAUTION: First, read the section; 'Important safety information' at thestart of this manual.Isolate the electrical mains system supply before commencing installation.Ensure all on/off power switches are set to their 'OFF' positions and themains lead has been removed from the unit's power socket.1 Using a small thin-bladed screwdriver, remove the fuse retainer cap.The cap has a spring-loaded locking feature which needs to bedisengaged by pushing the cap inwards whilst turning it anticlockwise.The fuse carrier and fuse can then be withdrawn from its socket.2 Renew the protection fuse with a fuse of the same type and rating.3 Refit the protection fuse in reverse order.17Figure 1-26 Renewing The Internal Protection Fuse