Atlas Copco ga55+ Instruction Book page 73

Instruction book
A level switch (7 - View of OSCi), connected to the Elektronikon® regulator of the compressor monitors
the condensate level in the second vessel. During normal operation this switch is in the closed position, so
that any abnormality (a too high condensate level) opens the electric circuit and triggers the alarm, which is
made visible on the Elektronikon® display (see section Warnings).
The condensate further flows to the third vessel, through a pipe connecting both lower halves of the
vessels. An activated carbon filter (7) cleans the condensate further, and the clean condensate flows out of
connection(9). A test outlet (8) is positioned below the normal outlet. Both outlets are connected to the
compressor drainplate by their corresponding tubes.
At the bottom of the vessels, drain tubes with valves (4) are provided for easy servicing.
In this setup, the cleaning process can be understood by splitting it up per vessel:
• First vessel: pre-separation and sorption of most of the free, directly separable oil
• Second vessel: emulsion separation and oil sorption
• Third vessel: sorption of the remaining oil
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