Porter-Cable N020227 instruction manual Speed Control, BRUSH-TYPE Skirt, Sanding Drywall

SPEED CONTROL

The 7800 Sander is equipped with a variable speed control. Adjust the speed by turning the control knob (B) Fig. 4. The control knob is numbered “1” through “5”. The setting “1” is the slowest speed (approximately 1000 RPM) and “5” is the fastest speed (approximately 2,000 RPM).

Use the higher speed settings for fast stock removal. Use the lower speed setting to reduce removal rate for more precise control. The Model 7801 Drywall Sander has a constant speed of 2,000 RPM.

BRUSH-TYPE SKIRT

A brush-type skirt (A) Fig. 5 surrounds the abrasive pad on the Model 7800. This skirt serves two purposes:

•It extends below the surface of the abrasive pad to prevent the abrasive from “gouging” the work.

•It helps contain the drywall dust until the vacuum cleaner pulls it away.

Replace the skirt if it is damaged or if it is worn excessively. Replacement skirts are available from any PORTER-CABLE Service Center.

Since the Model 7801 requires no vacuum cleaner, the skirt is shorter, but still prevents "gouging".

A

B

Fig. 5

To replace A skirt

To reduce the risk of serious personal injury, turn tool off and dis- connect tool from power source before installing and removing accessories, before adjusting or changing set-ups or when making repairs. An accidental start-up can cause injury.

1.Remove abrasive pad (see Abrasive Pad Replacement).

2.Use phillips screwdriver to remove the six retaining screws (B) Fig. 5.

3.Lift the skirt out of housing.

4.Position the new skirt to the housing and install the six retaining screws.

5.Replace the abrasive pad.

SANDING DRYWALL

The Drywall Sander has an articulating sanding head. The head can swivel in multiple directions, allowing the abrasive pad to conform to the work surface (Figs. 6, 7, and 8). This action enables you to sand the top, middle, and bottom of a wall or ceiling joint without changing position.

1.Turn the vacuum cleaner switch ON (I). (Model 7800 only).

To reduce the risk of personal injury, ALWAYS wear a respirator approved by NIOSH for “Dust and Mist”.

2.Turn Drywall Sander switch ON (I).

3.Position the Drywall Sander lightly against the work surface. Apply just enough pressure to align the sanding head with the work surface.

4.Apply additional pressure to engage the abrasive pad on the work surface. Move the sander in an overlapping pattern to smooth the drywall compound down to a “featheredge”.

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