BUCHI Distillation Unit K-355 - Manual (Page 23)

6 Operation
2 K-350 Operation Manual, Version F
6 .2 Setting the distillation time
To set the distillation time, proceed as follows:
Press “TIME”, the digit for minutes starts to flash.
Press “TIME” again, the digit for seconds starts to flash.
Set the distillation time by pressing “UP” and “DOWN”.
Start the distillation by pressing “START”.
Digits stop flashing after a certain time or after starting the distillation.
When pressing “UP” and “DOWN”, the time is first counted slowly, then faster.
The distillation time can be set in a range of 1 second to 99 minutes 59 seconds.
6 .3 Steam generator status
6 .3 .1 Heating
A constant colon (:) and “HHHH” in the TIME-display as long as “START” is pressed indicates, that the
steam generator is heating.
A flashing colon (:) and a signal sound for 1 second indicates, that the steam generator is ready.
6 .3 .2 Standby mode (after 30 minutes)
The TIME-display shows (-----).
Press “START” to cancel the standby mode.
6 .4 Switching ON/OFF checklist
To switch on and preheat the instrument, proceed as follows:
Check the filling level of the supply tanks.
Open the main water tap.
Switch on the instrument and wait until the steam generator is ready.
Insert an empty sample tube and an empty receiving vessel.
Close the protective door.
Set the distillation time to 2 minutes (see section “Setting the distillation time”) and the steam to
100% (see section “Setting the steam power”).
Start the distillation by pressing “START”.
To switch off the instrument, proceed as follows:
Fill 0 ml distilled water into the sample tube.
Fill 50 ml distilled water into the receiving vessel.
Switch off the instrument.
Close the main water tap.
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