Instruction book
1904 0504 83
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The Elektronikon® Graphic controller is provided with potential-free auxiliary NO contacts (NO =
normally open) (K05, K07 and K08) for remote indication of:
Manual or automatic operation (K07)
Warning condition (K08)
Shut-down condition (K05)
Maximum contact load: 10 A / 250 V AC.
Stop the compressor and switch off the voltage before connecting external equipment. Consult Atlas
Copco.
Maximum contact load: 10 A / 250 V AC.
Stop the compressor and switch off the voltage before connecting external equipment. Consult Atlas
Copco.
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On compressors equipped with an Elektronikon® graphic controller, see section Control mode selection.
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The compressor will react to commands entered by means of the buttons on the
control panel. Compressor start/stop commands via Clock function are active, if programmed.
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The compressor will react to commands from external switches. Emergency
stop remains active. Compressor start/stop commands via Clock function are still possible.
Have the modifications checked by Atlas Copco.
equipment. Only potential-free contacts are allowed
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The compressor is controlled via a local network. Consult Atlas Copco.
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Cooling water needs to fulfill certain requirements in order to avoid problems
of scaling, fouling, corrosion or bacterial growth.
In open circuit cooling towers, protective measures must be taken to avoid the
growth of harmful bacteria such as legionella pneumophila when there is a risk
of inhalation of the water droplets.
No general recommendation can encompass the effects of all combinations of the various compounds,
solids and gases typically found in cooling water in interaction with different materials. Therefore the
recommendations formulated in our Cooling Water Specifications are a general guide line for acceptable
coolant quality. However, where strict limits apply, a statement is made in the specification.
The water requirements refer to untreated water. When water is treated, some parameters will change.
Water treatments should be carried out by a specialized water treatment company, taking the
responsibility for the performance of the treated cooling water and the compatibility with the materials in
the cooling circuit. This includes not only the selection of the appropriate additives, but also the correct
application,
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