9
Lubricant recommendation
Use a mineral-based air tool oil
Ambient temperature ºC Viscosity grade (ISO 3448)
-30 to 0 ISO VG 32-68
-10 to +20 ISO VG 68-100
+10 to +50 ISO VG 100-150
4� Air/water pressure and hose dimensions
Air pressure
Ensure that the compressor can deliver the required air pressure
of 5 bar at the machine�
• High pressure (>6�3 bar) causes rough operation and damage�
• Low pressure (<4 bar) results in a slow drilling speed�
Water pressure
Make sure that the water pressure is set to around 3 bar�
Note! Maximum water pressure is 1 bar less than the working
pressure� For example if the air pressure is 5 bar, the water pres
-
sure must be below 4 bar to prevent water entering the impact
mechanism�
Note! Dry drilling is strictly prohibited� Operation without air- and
water tubes is not allowed as it will result in poor drilling perfor
-
mance�
Hose dimensions
The air hose diameter must be no less than 25mm� Inner diameter
of connection nipple and hose must be no less than 19mm� The
ideal overall air hose length is less than 15m�
Drill steel
Ejected insertion tool�
WARNING
If the tool retainer on the machine is not in a locked position, the
inserted tool can be ejected with force, which can cause personal
injury�
• Before changing the insertion tool, stop the machine, switch off
the compressed air supply and bleed the machine by activating
the start and stop device�
Before fitting the insertion tool
Check that the tool shank is of the correct size and length for the
chuck used� The shank must be clean and the tool must be in good
condition� Shanks which are chipped, rounded, out of square or
too hard on the striking end will operate inefficiently and cause
premature piston failure� Inspect the drill steel:
A dull drill steel will slow down the drilling speed and overstrain
the drill mechanism� When changing drill steel make sure that
the new one is the correct size to follow your previous bore�
Before drilling, check that the flushing hole in the drill steel is not
blocked�
Safety label
To avoid injury, before using or servicing tool, read and under-
stand separately provided safety instructions�
Operation
Using the rock drill for the first time
When the rock drill arrives from the factory, the inside of the tool
is coated with heavy oil to prevent corrosion�
After unpacking and installing the tool, pour a small amount of lu
-
brication oil into the air connection and operate the tool on partial
throttle to clean the interior� Follow this immediately with a liberal
amount of air tool oil�
The rock drill and pusher leg are lubricated with oil mixed with
compressed air, which is taken to the parts that need continu
-
ous lubrication� Oil is metered into the compressed air using the
FY250 lubricator connected to the air line�
Preparations before starting
1� Check the drilling equipment
• Check that all of the drilling equipment is in good working order�
• Check that the impact surface of the drill steel shank is flat with
no signs of wear�
• Make sure that the air inlet and exhaust ports are free from
obstructions�
• Check that the flushing holes in the drill steel and drill bit are
not blocked and that the flushing air/water flows through without
obstruction�
• Ensure that the fittings are tight and leak-proof�
Always check for damaged or loose hoses and fittings before
operation� Whipping hoses can cause serious injury�
WARNING
2� Blow out the air hose
Every day before using the drill, blow out the air hose to clear it
from accumulated dirt and moisture�
3� Fill the lubricator with oil
• Fill the lubricator (located on top of the cylinder) with oil if nec-
essary� The rock drill is lubricated with oil mixed with compressed
air, which is taken to the parts that need continuous lubrication�
Oil is metered into the compressed air�
• Use Atlas Copco Rock Drill AIR-OIL as a lubricant�
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General