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N
OTES
1. Top up with fuel at the end of each day's operation to prevent
condensate from contaminating the fuel.
2. More frequently when operating in high ambient temperatures.
3. More frequently when operating in a dusty atmosphere.
4. Screw the cap of the safety valve anticlockwise using a glove. After
testing, retighten the cap by hand.
5. Use ball bearing grease for the wheel bearings, graphite grease for
the drawbar and spindle.
6. Drain until clean fuel flows from the drain cock.
7. Some oil brands launch special oil types for screw compressors
allowing a longer oil change interval. Consult Atlas Copco.
8. Use Atlas Copco oil filters, with by-pass valve, as specified in the
parts list.
9. Replace the fuel filters regularly. Gummed or clogged filters mean
fuel starvation and reduced engine performance. The quality of the
fuel determines the frequency of filter renewal.
10. Replace the element if pressure drop exceeds 0.8 bar (12 psi).
11. To be performed only initially, after the first 50 hours.
B
ATTERY CARE
Charging
Before handling batteries, read the chapter ÔSafety precautionsÕ and
act accordingly. A Service Bulletin (ASB) dealing elaborately with
batteries and due care is available on request.
Maintenance
Keep the batteries clean and dry, the electrolyte level at 10 to 15 mm
(0.4 to 0.6 inch) above the plates or at the indicated level. Top up
with distilled water only. Cover the terminals lightly with petroleum
jelly.
S
TORAGE
Regularly run the compressor until it is warmed up. Load and unload
the compressor a few times. Keep the outlet valve closed after
stopping.
If the compressor is going to be stored without running from time to
time, protective measures must be taken as described in a separate
Service Bulletin (ASB), which may be obtained on request.
S
ERVICE PAK
The service paks of Atlas Copco offer you all the benefits of genuine
Atlas Copco parts. Service programmes and paks provide for the
right parts and maintenance for your compressor and engine. The
use of service paks minimises downtime and keeps your
maintenance budget low. The order numbers of the service paks kits
are listed on top of the maintenance schedule.
Contact your Atlas Copco representative for more information.
O
IL SPECIFICATIONS
Engine
It is strongly recommended to use Atlas Copco Par Oil SAE 15W40
which is specially selected to keep the engine in excellent condition.
Ð 5 litre can
: 1615 5953 00
Ð 20 litre can
: 1615 5954 00
Ð 208 litre drum
: 1615 5955 00
If it is desired to use another brand of oil, consult the engine
instruction manual for oil specifications, viscosity recommen-
dations and oil change intervals.
Compressor
Always use synthetic oil. It is strongly recommended to use Atlas
Copco Par Oil S which is specially selected to keep the compressor
in excellent condition.
Ð 5 litre can
: 1615 5950 00
Ð 20 litre can
: 1615 5951 00
Ð 210 litre drum
: 1615 5952 00
If it is desired to use another brand of oil, contact Atlas Copco for
the recommended oil.
C
HANGE OF OIL AND OIL FILTERS
1. Run the compressor until it is warmed up. Close the outlet
valve(s) and stop the compressor. Wait until the pressure is
released through the automatic blow-down valve. Unscrew the
oil filler plug one turn. This uncovers a vent hole, which permits
any pressure in the system to escape.
2. Remove the oil filters (by means of an oil filter spanner).
3. Clean the filter seats on the manifold, taking care that no dirt
drops into the system. Oil the gaskets of the new oil filters.
Screw the filters into place until the gaskets contact their seats,
then tighten one half turn only.
4. Drain the oil by removing all these drain plugs: the air
receiver/oil separator, oil cooler, oil stop valve, check valve and
gearbox drain plug. Reinstall and tighten the plugs, using new
gaskets, after draining.
5. Fill the air receiver until the level reaches the screw thread in the
filler pipe. Take care that no dirt drops into the system. Reinstall
and tighten the filler plug.
6. Run the compressor at no-load for a few minutes to circulate the
oil. Load the compressor and let it run at maximum speed and
normal working pressure until the thermostatic by-pass valve of
the oil cooler has opened (approx. 85 ¡C (185 ¡F) (TG)). Close
the air outlet valves. Stop and let the compressor depressurize as
described in step 1. Add oil until the level shows in the sight
glass (SG). Reinstall and tighten the filler plug.
7. Start the compressor and let it run at maximum speed and
normal working pressure. Close the air outlet valve and stop the
compressor. Let the compressor depressurize as described in
step 1. Check the oil level, which must show in the sight glass; if
it does not, repeat steps 6 and 7.
I
NSTRUCTION MANUAL
15
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