KKT chillers vBoxX 10, Инструкция по эксплуатации

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2.6. Oil
The compressor components affected by friction are lubricated with oil, which is added in the
factory by the compressor manufacturer. The polyolestor oil FV50S is used for this. The oil is soluble
in the refrigerant and distributes itself with the refrigerant in the whole refrigerating circuit. A
corresponding safety data sheet can be requested from our KKT chillers service team (
see Table
1: Contact details ).
2.7. Filter dryer
The task of the filter drier is to absorb any contaminations (dirt) or moisture from the refrigerant
circuit. Both the refrigerant and the oil act hygroscopically. When the refrigeration circuit is installed
the oil can absorb moisture. This moisture can cause corrosion and have a negative effect on the
refrigeration process. The filter dryer binds this moisture and also has a mechanical filter effect. If
work is carried out on the refrigeration circuit, in which it is opened, it is necessary to change the
filter dryer.
2.8. Pressure sensors
The pressure sensors used are compact pressure transmitters with piezoresistive measuring cell.
The sensors record the system pressure continuously in various places in the refrigerant and cold
water circuit. The values are used to control the system and for visualisation at the controller
display.
2.9. Temperature sensors
The temperature sensors used are equipped with a platinum measuring cell. The sensors record
the temperature continuously in various places in the refrigerant and cold water circuit. The values
are used for to control the system.
2.10. Control unit
The control unit is a control system programmed in the factory. All system measured values and
information converges in this control system. The electrical components are also controlled via
algorithms.
2.11. Display
The days is used to visualise information required by the operator and the system processes. It is
also possible to make entries. The display communicates with the control unit. Further information
on operating the chiller is given in
Chapter 8.5 Control unit.
2.12. Control cabinet
The control cabinet conforms to the EN 60204 regulations and contains the electrical and
electronic components to control the chiller. To open the control cabinet, undo the screws in the
front panel first (hexagon socket, 4mm). Then tilt the front panel forward slightly and lift it out from
above (see figure below). Now open the control cabinet door with the corresponding control cabinet
key.