BUCHI Recirculating Chiller F-125 - Manual (Page 20)

6 Operation
20 F-125 Manual, Version B
6 .2 .3 Filling the cooling media tank
Do not connect and operate before filling with coolant. Mind the maximum fill level! We recommend a
mixture of ethylene glycol / water at least 30/60, which does not freeze until -16 °C.
NOTE
If you have a large closed cycle cooling system (e.g. long hoses, many condensers connected to the
system in series) fill the refrigerant tank to maximum level.
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
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.
Before starting, the rollers of the instrument must be blocked •
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
Preparation 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. •
Press the START button to start the cooling process. •
Check the actual temperature on the Chiller, start working when the required temperature is •
reached