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For chillers with an integrated autotransformer sizes cBoxX 30 to cBoxX100, the transformer is
located in an additional flanged-mounted housing; for sizes cBoxX 120 to cBoxX 200 it is located
in the existing housing. For exact specifications, please refer to the circuit diagram. Please get in
touch with your KKT chillers contact person for further information on implementing this option.
3.15. Phase monitoring
The Compact-Line units can be equipped with optional phase monitoring. This monitors the phase
sequence, phase failure, undervoltage and asymmetry and covers a voltage range of 200-690V. If
the respective predefined limits are exceeded the system switches off and protects the electrical
components installed in the unit.
3.16. Hot gas bypass for output control <1K
If a more precise target constant than ±1 Kelvin is required, the chiller can be equipped with an
output control. In this case the output of the refrigeration circuit is adjusted to the cooling
demand by an electronically controlled valve. Unlike the standard control by switching
compressors on or off, a higher target constant is achieved by the continuous regulation of the
valve.
3.17. High-temperature package
In principle, the units must be operated within the given ambient temperature range (see
Table 3). If the high-temperature package is selected, the unit can be operated at an ambient
temperature of up to 50 °C without high-pressure faults.
3.18. Special paint finish
While the condenser's protective grille is always painted in RAL 7015 anthracite black, the
cladding panels (1.3 Elements) can also be optionally finished in special colours.
3.19. Air filter mat (accessories)
If the chiller is operated in surroundings with dust or oil vapour the condenser should be
protected with the air filter mat. The filter is fixed using the Velcro tapes attached in the
condenser protective grille. The filter is cleaned by removing it and washing it with water or a
slightly alkaline solution. Heavily-contaminated filters must be replaced by new ones. Please
contact the KKT chillers Service Team (see Table 1 Contact details).
3.20. Levelling feet (accessories)
The levelling feet are used for vibration isolation and for height adjustment. They consist of a
threaded rod and a grey cast iron shell with an elastic element attached. The threaded rod
enables the height to be adjusted and compensates for floors sloping by up to 5°. The elastic
element has a slip-resistant covering. Figure 6 and Figure 7 show the installed machine foot – the
technical drawing is given in the appendix.
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