Atlas Copco GA 160 VSD, Instruction Book

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9.2 Coolers
Checking the coolers for cleanliness on air-cooled compressors
Activate the "Cleanlinesstest" option in the Elektronikon regulator as follows:
• Starting from the main screen, press the "Menu" key.
• Press the arrow down key (1) until "Test" is followed by a horizontal arrow.
• Activate the menu by pressing the tabulator key (2).
• Press the arrow down key (1) until the option "Cleanliness" is followed by a horizontal arrow.
• Activate the menu by pressing the tabulator key (2).
Measure the pressure drop by the water column in mmWG. The condition of the cooler cleanliness can be
analyzed by comparing this value with the value in the table below depending on the compressor model.
Substract 3 mm WG from the values in the table when ducting is installed.
The values are given at maximum fan speed as activated by the cleanliness test. Mild clogging means that
25% of the section is blocked. Heavy clogging means that 50% of the section is blocked. The values should
only be used as guideline. Depending on the local (ambient) conditions the limits can be different. Readings
on the compressor should be observed on a regular basis to avoid high temperatures. Regular cleaning is
anyhow advised since clean coolers will reduce fan speed and thus power consumption.
Instruction book
98 APF192090