• Shut-down condition (K05)
Example: K05 is a NO (NO = normally open) contact. It will be closed if all conditions are normal
and will open in case of power failure or shutdown.
Maximum contact load: 10 A / 250 V AC.
Stop the compressor and switch off the voltage before connecting external equipment. Consult
Atlas Copco.
Compressor control mode
On compressors equipped with an Elektronikon™ Swipe controller, consult section Machine
settings menu if it is desired to switch to another control mode.
On compressors equipped with an Elektronikon™ Touch controller, see section Quick access
screen.
The following control modes can be selected:
• Local control: 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.
• Remote control: The compressor will react to commands from external switches.
Emergency stop remains active. Compressor start/stop commands via Clock function are
still possible.
Options:
• Remote starting and stopping (switch S1')
• Remote loading/unloading (switch S4')
• Remote pressure sensing (switch S' combined with pressure switch S4')
Have the modifications checked by Atlas Copco.
Stop the compressor and switch off the voltage before connecting external equipment.
Only potential-free contacts are allowed.
• LAN control: The compressor is controlled via a local network. Consult Atlas Copco.
See section Electrical system to locate the connectors.
7.4 Cooling water requirements
General
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.
Instruction book
120 2920 7109 51
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