Atlas Copco GA 7 VSD+ Instruction Book page 106

Preventive Maintenance schedule programmed in the Elektronikon
Running hours
4000 (1)
8000 (2)(3)
(1): or yearly, whichever comes first
(2): or every 2 years, whichever comes first
(3): For all 8000 hours actions, contact Atlas Copco.
The indicated oil exchange intervals are valid for standard operating conditions (see section
conditions and limitations) and nominal operating pressure (see section Compressor data). Exposure of the
compressor to external pollutants, operation at high humidity combined with low duty cycles or operation
at higher temperatures may require a shorter oil exchange interval. Contact Atlas Copco if in doubt.
Exchange interval for Roto-Inject Fluid
Ambient temperature
up to 25 °C
from 25 °C up to 35 °C
more than 35 °C
Exchange interval for Roto-Xtend Duty Fluid
Ambient temperature
up to 40 °C
more than 40°C
Exchange interval for Roto-Foodgrade Fluid
104
Operation
Change oil and oil filter (except when Roto-Xtend Duty Fluid is used).
Replace the air filter element.
Replace the oil separator element.
Check condition of the air intake hose between air filter and compressor element (where
applicable).
Check pressure and temperature readings.
Check operation of cooling fans of converter.
Check blow-off solenoid valve after stopping and pressing the emergency stop button.
Clean coolers. Check and clean cooling fan assembly.
All the actions for 4000 hrs.
Change oil and oil filter (when Roto-Xtend Duty Fluid is used).
Replace the filter elements of the electric cabinet.
Replace the non return valve of the scavenge line and clean the restriction nozzle.
Replace the minimum pressure valve, and replace the thermostatic valve. Remove
carefully.
Replace the electronic drain valve.
Carry out a LED/display test.
Check for possible air and oil leakages.
Have safety valve tested.
Element outlet
temperature
up to 90 °C
from 90 °C up to 100 °C
more than 100 °C
Element outlet
temperature
up to 110 °C
more than 110 °C
Exchange interval *
4000 hours
3000 hours
2000 hours
Exchange interval *
8000 hours
6000 hours
Instruction book
Reference
Maximum time interval
*
1 year
1 year
1 year
Maximum time interval
*
2 year
2 year
2920 7109 23