BUCHI DuMaster D-480 - Manual (Page 244)

Operation Manual D-480 ©BÜCH Labortechnik AG
9 - Repairing the instrument 244
F7 + F8 Furnace transformer 15 A
Process
The section is divided into the following phases:
 Allow instrument to cool down and disconnect from the mains
 Remove and check fuse
 Insert fuses
 Switch the instrument on again
Note
Please note:
 If the fuses trip, please always notify your service office as there may be serious reasons for this.
 Only use fuses matching the indicated type and the indicated voltage on the fuse holder. No
fuses with a higher amperage (A) may be used.
Safety instruction
Strictly observe the safety instruction "Replacing fuses" under Warning notes during operation (on
page 24).
Phase 1: Allow instrument to cool down and disconnect from the mains
Proceed as follows:
 Open the "Device parameters" dialog in the operating software by selecting Options > Settings
> Parameters.
 Set the setpoint temperature of the furnaces to 0 °C and confirm by clicking OK.
 Wait 2–3 hours until the instrument has cooled down to at least 55 °C.
 Quit the operating software. Execute the following command: File > Exit.
 Switch off the analyzer and its peripherals.
 Disconnect the analyzer from the mains. Disconnect the power supply plug.
 The instrument is now ready for removal of the fuses.
Fuse holder
The following picture shows a fuse holder from the side: