BUCHI DuMaster D-480 - Manual (Page 117)

Operation Manual D-480 ©BÜCH Labortechnik AG
6 - Starting up and shutting down the instrument 117
Shutting the instrument down for short measuring breaks (standby)
What are short measuring breaks?
Short measuring breaks are breaks that last overnight or for 2-5 days.
Procedure
The analyzer and the PC stay online during short measuring breaks. Only the sleep function is
activated for the instrument.
Setting the analyzer sleep function.
Proceed as follows:
 Open the "Sleep/wake-up functions" dialog in the operating software by selecting Options >
Settings > Sleep/Wake-up.
 Define when to enable the sleep function. Select one of the following options:
 Sleep now... (button): The instrument is shut down immediately.
 "Sleep after end of sample": The instrument is shut down after finishing the last sample.
 "Sleep at sample No.:": The instrument is shut down prior to the appropriate sample.
 Check "Shut off carrier gas".
 Check "Reduce furnace 1 temp" and enter 800 °C in the box next to "Reduce furnace 1 temp".
 Specify when to "wake up" the instrument again. The working temperatures are increased again
and the instrument is flushed with gas. Choose one of the following options:
 Enter "Date" and "Time" when to "wake up" the instrument and select the box next to "One-
time wake-up at above time/date".
 Enter a "Time", select the box next to "Daily wake-up at above time, except:" and select the
weekdays on which you do not want to wake up the instrument.
 If you shut down the instrument in the middle of a series, you can continue this series after
"wake-up". To do so, check "Continue after wake-up if there are samples".
 Click OK to close the window and save your settings. The instrument is shut down and woken up
again according to your settings.
Shutting the instrument down for long measuring breaks (switching off)
What are long measuring breaks?
Long measuring breaks are breaks that last longer than 5 days.
Preparing the instrument for long measuring breaks.
Proceed as follows:
 Shut off the gas supply.
 Set the setpoint temperature of the furnaces to 0 °C in the operating software. Open the "Device
parameters" dialog by selecting Options > Settings > Parameters.
 Wait 2–3 hours until the instrument has cooled down to <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
ready for long measuring breaks.