HK 50 M – HK 10M – HK 100S SERVICE BULLETIN5.6.5. Dismounting the venturiOPERATION ORDER COMPONENT REQUIRED TOOL KIT5 Turn the system power OFF and close the gas valve5.1 Remove the front cover. (Section5.6.1)5.2Remove the screws (1) andseparate the venturi from thefan.2 screws screwdriver5.3Remove the screws (2) andseparate the venturi from the gasvalve.3 screws screwdriverReassembly is the opposite of the disassembly phase.5.6.6. Dismounting the fanOPERATION ORDER COMPONENT REQUIRED TOOL KIT6 Turn the system power OFF and close the gas valve6.1 Remove the front cover. (Section5.6.1)6.2 Separate cable group (1) from the fan Cable group6.3Remove 4 bolts (3) from the heatexchanger 4 bolts 8 mm socket wrench6.4 Removes two screw (5) andseparate from fan group (2) andventuri (6)2 screws Screwdriver6.5 Remove the fan (2) Fan ScrewdriverReassembly is the opposite of the disassembly phase.Service Administration 64 03/2010
