Buchi F-100, Operation Manual, Page: 17 / 34

5 Putting into operation
17
F-100 / F-105 Operation Manual, Version C
5 .2 Electrical connections
Notice
Risk of instrument damage if mains supply is incorrect.
• External mains supply must meet the voltage given on the type plate
• Check for proper grounding
• Exchange defective cabling immediately
After the installation procedure has been completed successfully, the power plug of the Recirculating
Chiller can be connected to mains.
The used mains circuit has to:
• provide the voltage that is given on the type plate of the instrument.
• be able to handle the load of the connected instruments.
• be equipped with adequate fuses and electrical safety measures, in particular proper grounding.
See also technical data of all components regarding the different minimum system requirements!
NOTE
• Additional electrical safety measures such as residual current breakers may be necessary to
meet local laws and regulations!
• External power switches (e.g. emergency stop switches) must meet IEC 60947-1 and
IEC 60947-3 requirements. Such devices must be clearly labeled and accessible at any time.
• External connections and extension lines must be provided with a grounded conductor lead
(3-pole couplings, cord or plug equipment). All electrical cables used must be suitable for the
required power rating.
5 .3 Factors affecting chilling capacity
The available chilling capacity is dependent on various factors. The most important aspect to be
aware of is that the chilling capacity diminishes as the chilling temperature is lowered. In the case
of the F-105 it is approx. 600 W at 20 °C and only around 50 W at –5 °C. The ambient temperature
has an effect as well. At room temperatures above 35 °C the chiller's air cooling may, depending on
chilling capacity, no longer be sufficient and the chiller may switch off for safety reasons to protect
itself against overheating. At an ambient temperature of 30 °C the F-105 still has a chilling capacity
of around 150–W. We recommended a chilling temperature setting of 10–15 °C and a room tempe-
rature that does not exceed 25 °C. Outside of those parameters, the chilling capacity is substantially
reduced.