4. Depressurise the system by unscrewing filler plug (FC) just one turn to permit any pressure in the system
to escape. Remove the plug.
Tighten the filler plug.
5. Reset the service timer:
For compressors equipped with an Elektronikon® regulator, see section Service warning.
For compressors equipped with an Elektronikon® Graphic regulator, see section Service menu.
8.5 Coolers
General
Keep the coolers clean to maintain their efficiency.
Never use a high pressure water jet to clean the compressor.
Instructions for air-cooled compressors
• Stop the compressor, close the air outlet valve and switch off the voltage.
• Cover all parts under the coolers.
• Remove any dirt from the coolers with a fibre brush. Never use a wire brush or metal objects.
• Next, clean with an air jet in the reverse direction to normal flow. Use low pressure air. If necessary, the
pressure may be increased up to 6 bar(e) (87 psig).
• If it is necessary to wash the coolers with a cleaning agent, consult Atlas Copco.
8.6 Safety valves
Location of safety valve
GA 15 up to GA 22
Instruction book
2920 7083 31 139
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