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13
Commissioning
Qualified personnel
The work described in this chapter needs to be performed by qualified
personnel. The following minimum knowledge is required for the work:
•
Instructed person in the process engineering field.
•
Detailed knowledge of the operating instructions and the applicable
safety regulations.
Note
Check the tightness of the tube fitting!
If necessary, include the tightness of the tube fittings in the maintenance
cycle.
Warning
If toxic or oxygen-displacing gases are cooled with the cooler, the gas paths
must be purged with inert gas or air before opening the gas-carrying parts.
The cooling circuit should always be connected and put into operation first,
and then the sample circuit.
Caution hot surfaces possible!
If hot media are fed through the cooler, the operator must check whether the
external surfaces are to be marked with the "Caution hot" pictogram.
Furthermore, the work safety regulations of the operator must be observed.
Before commissioning, check that the pressure specification corresponds to the specifications on the type plate.
13.1
Setting the Temperature
To set the desired temperature, proceed in the following order:
1. Apply the coolant.
2. Apply the sample to be cooled.
3. Wait until a stable temperature has been reached.
4. Increase or reduce the coolant quantity to set the desired temperature.
Warning
For temperatures > 95 °C, a sufficient coolant flow must be ensured.