PRACTICAL OPERATING PROCEDURES

CAUTION

Never apply water or grinding fluid when sanding. This could result in electrical shock.

1.Switching the sander ON and OFF

The power can be turned on by setting the lever to ON (1) and turned off by setting the lever to OFF (0).

CAUTION

Never turn the power switch ON when the sander is contacting the surface to be sanded. This is necessary to preclude damage to the material. The same applies when switching the power OFF.

2.How to hold the random orbit sander

While gripping the housing, lightly press the sander against the surface to be sanded so that the sanding paper uniformly contacts the surface, as shown in Fig. 4. DO NOT apply excessive pressure to the sander while sanding. Excessive-pressure may cause overload of the motor, reduced service life of the sanding paper, and lowered sanding or polishing efficiency.

Fig. 4

3.How to move the random orbit sander

Move the sander by either moving it up and down or by moving it in circles while gradually progress- ing in a sideways direction (Figs. 5 and 6).

Fig. 5

Fig. 6

4.After installing new sanding paper

Movement of the sander may tend to become unsteady after new sanding paper has been installed, because of the new, coarse grain of the paper. This can be avoided by slightly tilting the sander forward or backward during sanding or polishing. Sander movement will become steady as the sanding paper surface becomes properly abraded.

MOUNTING THE OPTIONAL ACCESSORIES

￿Mounting the polyester buff

Since the attachment is a hook-and-loop type as with the sanding paper, the polyester buff can be mounted by just pressing it onto the pad (Fig. 7).

Polyester buff

Fig. 7

MAINTENANCE AND INSPECTION

1.Empting and cleaning the Dust Bag

If the dust bag contains too much saw dust, dust collection will be affected. Empty the dust bag when it gets full.

Remove the dust bag, open the fastener, and dispose of the contents.

2.Inspecting the sanding paper

Since use of worn-out sanding paper will degrade efficiency and cause possible damage to the pad, replace the sanding paper as soon a excessive abrasion is noted.

3.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. Failure to do so could result in serious hazard.

4.Maintenance of the motor

The motor unit winding is the very “heart” of the power tool.

Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

5.Replacing supply cord

If the supply cord of Tool is damaged, the Tool must be returned to Hitachi Authorized Service Center for the cord to be replaced.

6.Servicing

Consult an authorized Service Agent in the event of power tool failure.

4