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Engine does not start Engine oil pressure does not build up. See Engine Operation Manual.
Compressor oil pressure does not build up. See problem “Compressor oil pressure too low”.
Faulty compressor oil pressure shutdown switch. Remove and test switch. Replace, if out of order.
ECM fault. Consult Atlas Copco.
Coolant level(s) too low. Check and adjust coolant level(s), if necessary.
Crank time too short. Adjust crank time on User Interface.
Ambient temperature too low. Connect engine heaters.
Speed sensor inoperative. Check speed sensor and electric wiring.
Insufficient fuel supply. Check fuel lines or bleed.
Temperature or pressure sensor missing or malfunctioning. Check via the User Interface display and replace sensor.
After working for some time, the
unit keeps shutting down
Restriction in fuel supply to engine. Check fuel lines and fuel filters.
Air leak in fuel suction line or fuel filters. Check suction side of electric fuel pump and fuel filters for air
leaks.
Compressor oil pressure too low. See problem “Compressor oil pressure too low”.
Engine oil pressure too low. See Engine Operation Manual.
Compressor overheating. See “Compressor overheating”
Engine overheating. See Engine Operation Manual.
Excessive oil fumes or air flow
coming from breather pot assembly
on gear casing.
Compressor element(s) seals defective. Have compressor element(s) inspected by Atlas Copco.
Symptom Possible cause Corrective action
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