Bruker BPHG 90 - Replace Power Line Fuses; Replace Cryocooler Controller Fuse; Figure 9.3 Line Fuses Holder; Figure 9.4 Cryocooler Controller Fuse

Maintenance
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9.2.4 ReplacePowerLineFuses
Figure9.3:LineFusesHolder
1. Poweroffthegeneratorandremovepowercablefromplug.
2. Withasmallflatscrewdriveropenthefuseholder.
3. Removebothfuses.
4. Installnewfuses(P/N2257).
5. Closethefuseholder.
9.2.5 ReplaceCryocoolerControllerFuse
Figure9.4:CryocoolerControllerFuse
The power supply (red wire= +48V) of the cryocooler controller board is protected by a
fuselocatedontherearsideofthecabinet.
1. Turnoffthegenerator.
2. Thefuseholderislocatedontherearsideofthegenerator.
3. Unscrewthefuseholderwithaflatscrewdriver,removethefuse.
4. Installnewfuse(P/N1808869).
5. Closefuseholder.