YATO YT-09739 Manual Del Usuario página 13

The tool is operated by means of a lever which opens the air valve and thus ensures the supply of compressed air to the tool drive.
Press the lever towards the housing. The valve can be secured with a lock to prevent the lever from being accidentally pressed in.
Pull out the lever (VI) before starting the tool. Use the locking device whenever the switch lever is not pressed in.
Allow the tool to reach its rated speed and only then start working.
Working with the grinder
Make sure that the maximum equipment rotation speed is higher than that of the grinder.
Start the grinder and allow the blade to reach its full rotation speed. Only a rotating blade should be applied to the workpiece.
Position the grinder so that the entire surface of the grinding disc is used. This will ensure uniform wear of the disc.
Move the grinder towards and away from you, and gradually to a side. Wood should be sanded along the grain. Sanding should be
started with thicker grain sheets, and then use increasingly fi ner grain sheets until the desired eff ect is achieved. Avoid checking the
condition of the wood surface worked with your bare hand. This can cause injury from splinters and burrs generated during work.
The paper grain must be selected according to the surface worked. Too high grain of the grinding sheet will produce scratches
on the surface of the material.
Take regular breaks during operation to check the condition of the grinding sheet and the fi ll-up level of the dust container. If a
grinding sheet is found to have been clogged with dust generated during work, or that the abrasive grain has worn, replace the
sheet with a new one.
Only apply as much pressure to the tool as you need to process the material. Excessive pressure can lead to uneven work results
and even destroy the workpiece surface. Excessive pressure can lead to overheating of the surface, which can damage, for
example, the sanded paint coating.
Select the paper grain according to the type of work. Use more grain-rich paper for sanding and peeling. Use smoother paper for
fi nishing work.
Do not use the abrasive disc used for one type of work, for another type of work. For example, do not use the paint peeling disc
to remove corrosion. Contamination remaining on the disc after fi nishing working with it once may adversely aff ect the surface to
be machined during the next task.
MAINTENANCE
Never use petrol, solvent, or other fl ammable liquids for cleaning of tool. Fumes may ignite, causing the explosion of tool and
serious injuries.
Solvents used for cleaning the tool handle and tool body can cause softening of seals. Thoroughly dry the tool before starting work.
In case of any abnormality in the tool operation, the tool should be immediately disconnected from the pneumatic system.
All pneumatic system components must be protected from pollution. Pollution, which gets into the pneumatic system can destroy
the tool and other elements of pneumatic system.
Maintenance of the tool before each use
Disconnect the tool from pneumatic system.
Before each use you should implant a small amount of preservative fl uid (for example wd-40) through the air inlet.
Connect the tool to the pneumatic system and run it for about 30 seconds. This will allow to distribute the preservative liquid on
the tool interior and clean it. Disconnect the tool from pneumatic system again.
A small quantity of SAE 10 oil let to the tool interior by air inlet and openings intended for that purpose. It is recommended to use
SAE 10 oil intended for maintenance of pneumatic tools. Connect the tool and run it for a short time.
Attention! WD - 40 may not serve as the appropriate lubricating oil.
Wipe the excess of oil, which is escaped by the outlets. The left oil can damage the tool sealing.
Other maintenance
Before each use of the tool you should check whether there are on the tool any visible signs of damage. Drivers, tool holders
and the spindles should be kept clean. every 6 months, or after 100 hours of work you should submit the tool for examination by
qualifi ed personnel in repair workshop. If the tool was operated without the use of a recommended air supply system you should
increase the frequency of tool examinations.
Removal of defects
You should discontinue the tool use immediately after any failure detection. Operation with a damaged tool can cause injuries. Any
repair or replacement of the tool must be carried out by qualifi ed personnel in authorized repair workshop.
Failure Possible solution
Let a small amount of WD-40 through the air inlet. Run the tool for a few seconds. The blades may stick to the rotor. Run the tool for
The tool has too slow
about 30 seconds. Lubricate the tool with small amount of oil. Attention! The excess of oil can cause a decrease in power of tool. In this
rotations or it does not start
case, you should clean the drive.
O R I G I N A L
GB
I N S T R U C T I O N S
13