Atlas Copco Secoroc YT29SA Manual de instruções do operador - Página 4
Procurar online ou descarregar pdf Manual de instruções do operador para Perfurar Atlas Copco Secoroc YT29SA. Atlas Copco Secoroc YT29SA 11 páginas. Pusher leg rock drill
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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 lubrication 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 continuous 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
h
Check that all of the drilling equipment is in good working order.
h
Check that the impact surface of the working tool shank is flat, with no signs of
wear.
Make sure that the air inlet and exhaust ports are free from obstructions.
h
h
Check that the flushing holes in the working tool and drill bit are not blocked, and
that the flushing air/water flows through without obstruction.
h
Ensure that the fittings are tight and leak-proof.
WARNINg
Always check for damaged or loose hoses and fittings before operation.
Whipping hoses can cause serious injury.
2. Blow out the air hose
Every day before using the drill, blow out the air hose to clear it from
h
accumulated dirt and moisture.
3. Fill the lubricator with oil
Check the lubrication oil level, fill the lubricator if necessary.
Note! Check that the chuck and working tool shank are always covered by a film of
oil.
Note! Always use a recommended lubricant. Operation without lubrication is not
allowed.
Lubricant
Recommendation
Air tool oil
Use a mineral-based air tool oil
Ambient
Viscosity grade
temperature ºC
(ISO 3448)
-30 to 0
ISO Vg 32-68
-10 to +20
ISO Vg 68-100
+10 to +50
ISO Vg 100-150
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4. Air/water pressure and hose dimensions
Air pressure
Ensure that the compressor can deliver the required air pressure of 5 bar at the tool.
h
High pressure (>6 bar) causes rough operation and damage.
h
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 at 1 bar less than the working pressure. For
example if the air pressure is 5 bar, the water pressure must be below 4 bar
to prevent water entering the impact mechanism.
Note! Dry drilling is strictly prohibited. Operation without air- and water tube is not
allowed as it will result in poor drilling performance.
Hose dimensions
The air hose diameter must be no less than 25mm. The inner diameter of
connection nipple and hose must be no less than 19mm. The ideal overall air hose
length is less than 15m.
Fitting and removing the tool
Before fitting the working tool
h
Check that the tool shank is of the correct size and length for the chuck used.
h
The shank must be clean and the tool must be in good condition.
h
The suitable quenching hardness of the shank is HRC48-53. A harder end face will
cause piston damaged and breakage of the end face of the piston. If shank face is
too soft, it will be easily deformed by the piston, which will result in difficulty in
removing the working tool.
h
Shank end face shall be flat and perpendicular to the axis.
h
Remove sharp edges from the shank's end face. Rough shank surface will cause
premature piston failure.
h
Inspect the bits: Dull bits will slow down the drilling speed and overstrain the drill
mechanism. When changing bits make sure that the new bit is the correct size to
follow your previous bore.
h
Before drilling check that the flushing hole in the working tool is not blocked.
YT29SA
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