Buchi F-100, Operation Manual, Page: 21 / 34

6 Operation
21
F-100 / F-105 Operation Manual, Version C
6 .2 .2 Filling the chiller
NOTICE
Risk of instrument damage if wrong cooling medium is used.
• Check to ensure that the cooling medium is suitable for use at the desired cooling tempera-
ture and does not freeze at the working temperature
Fill the cooling liquid in the opening to maximum filling level while the chiller is not connected to
another device. We recommend a mixture of ethylene glycol/water at least 40/60, which does not
freeze until –16 °C.
6 .3 Start operation
NOTE
See installation instructions (chapter 5.1) for initial startup!
!
WARNING
Danger of injury due to tipping or failure of the instrument due to vibrations.
• After being transported, the recirculating chiller must be allowed to stand for at least 2 hour
before it is switched on.
Start the Recirculating Chiller by switching on the Instrument by the main switch. Press start on the
Chiller to fill the cooling coils.
6 .4 No BUCHI vacuum controller connected to the system
Preparational steps
• System must be in good working order. See final installation check, section 5.1.
• Turn on instrument.
• Check level of cooling transfer medium as described in section 6.1 Level indicator.
• Set the desired working temperature by the UP and DOWN buttons (not for F-100).
• Press the START button to start the cooling process (not for F-100).
• Check the actual temperature on the Chiller until it has reached the required temperature and start
working.
Working steps
• The cooling temperature can be adjusted during the operation process by pressing the UP and
DOWN buttons on the Chiller (not for F-100).
• If the Chiller can’t keep the required temperature, do a slower distillation, by means of decreasing
the vacuum to a slightly higher level so that less vapour is coming to the cooling coil.
Steps for end of process
• Press the STOP button on the Chiller.
➡
The cooling stops immediately.
➡
After a few seconds ventilation also stops.