User manual

2920 1475 00
38
Instruction book
4.2.2 Drive motor (M1-Figs. 1.1/1.2)
Contact your Customer Centre for the recommended grease
type, the greasing quantity and interval for the motor bearings.
Important
Never mix greases of different brands or types.
4.3 Oil specifications
It is strongly recommended to use following oils:
Roto-Inject Fluid is a high-quality lubricant ensuring optimum
lubrication for a service life of up to 4000 running hours.
HD Roto-FluidPlus is a very cost-effective oil ensuring optimum
lubrication for a service life of up to 8000 running hours.
Important
Never mix oils of different brands or types.
4.4 Oil change
1. Run the compressor until warm. Stop the compressor and
switch off the voltage. Wait a few minutes and depressurize
by unscrewing plug (5-Fig. 3.11) only one turn to permit
any pressure in the system to escape.
2. On GA, loosen vent plugs (5-Fig. 1.3/2-Fig. 1.4) on top of
the coolers.
3. Drain the oil by removing the drain plugs. Plugs are
provided on the air receiver (6-Fig. 3.11), oil stop valves
(3-Fig. 4.1), check valves (6-Fig. 4.1), oil coolers (on GA
only) (14 and 15-Fig. 1.3) and gearbox (2-Fig. 4.1). GA W
are additionally provided with a plug in the oil flexible
between the oil filter housing and the oil coolers. Tighten
the plugs after draining.
4. Remove filler plug (5-Fig. 3.11). Fill the air receiver with
oil until the level reaches the filler opening. Reinstall and
tighten plug (5-Fig. 3.11). Tighten the vent plugs (5-Fig.
1.3/2-Fig. 1.4).
5. Run the compressor loaded for a few minutes to allow the
oil cooler by-pass valve to open. Stop the compressor and
wait a few minutes.
6. Depressurize the system by unscrewing plug (5-Fig. 3.11)
only one turn to permit any pressure in the system to escape.
Remove the plug. Fill the air receiver with oil until the
level reaches the filler opening. Tighten plug (5-Fig. 3.11).
7. After carrying out the service actions of the related service
plan, the service warning must be reset. See also section
4.1.
4.5 Oil filter change
1. Stop the compressor, switch off the voltage and depressurize
by unscrewing plug (5-Fig. 3.11) only one turn to permit
any pressure in the system to escape.
2. Provide an oil pan to avoid possible oil spilling. Remove
oil filters (1-Fig. 3.11).
3. Clean the filter seats on the manifold. Oil the gaskets of the
new filters and screw them into place until the gaskets
contact their seats, then tighten by hand.
4. Tighten filler plug (5-Fig. 3.11).
5. After carrying out the maintenance operations of the related
service plan, the service warning must be reset. See also
section 4.1.
4.6 Storage after installation
Run the compressor, e.g. twice a week, until warm. Load and
unload the compressor a few times to operate the components
of the unloading/loading system.
If the compressor is going to be stored without running from
time to time, protective measures must be taken. Consult Atlas
Copco.
1 Unloader
2 Oil drain plug
3 Oil drain plug
4 Oil stop valve
5 Compressor element
6 Oil drain plug
7 Check valve
8 Air receiver
Fig. 4.1 Compressor element
1
8
7
6
5
4
3
2
50545F