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Engine maintenance
Refer to the engine’s operator manual for full maintenance
schedule.
(*) Measuring the alternator insulation
resistance
A 500 V megger is required to measure the alternator
insulation resistance.
If the N-terminal is connected to the earthing system, it
must be disconnected from the earth terminal. Disconnect
the AVR.
Connect the megger between the earth terminal and
terminal L1 and generate a voltage of 500 V. The scale
must indicate a resistance of at least 2 M.
Refer to the alternator operating and maintenance
instructions for more details.
Engine fuel specifications
For fuel specifications, please contact your Atlas Copco
Customer Center.
Engine oil specifications
High-quality, mineral, hydraulic or synthesized
hydrocarbon oil with rust and oxidation inhibitors, anti-
foam and anti-wear properties is recommended.
The viscosity grade should correspond to the ambient
temperature and ISO 3448, as follows.
It is strongly recommended to use Atlas
copco branded lubrication oils for both
compressor and engine.
Never mix synthetic with mineral oil.
Remark:
When changing from mineral to
synthetic oil (or the other way around),
you will need to do an extra rinse.
After doing the complete change
procedure to synthetic oil, run the unit
for a few minutes to allow good and
complete circulation of the synthetic oil.
Then drain the synthetic oil again and
fill again with new synthetic oil. To set
correct oil levels, proceed as in normal
instruction.
Type of lubricant Engine
between -10°C (14°F) and 50°C (122°F) PAROIL E mission Green
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