Assessments - 4, GPA: 3.5
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Facilidade de uso
2. Install the abrasive to the sander as described in the ATTACHING STIKIT™ ABRASIVE section, or the ATTACHING CONVENTIONAL ABRASIVE section of this manual. 3. Position the sander to the punch (see Fig. 6), aligning the sander pad with the two corner guides on the punch. Push sander onto the punch until seated (see Fig. 7). 4. Remove sander from punch. Fig. 5 Fig. 6 Fig. 7 8 900008 - 04-29-02.qxd 5/23/02 2:17 PM Page 9 OPERATION TO START AND STOP SANDER 1. CAUTION: Make certain the switch is in the “OFF” position, and the power source is the same as that specified on the tool’s nameplate. 2. Connect the sander to the power source. 3. Lift sander off the work and hold it firmly when switching the motor “ON” and “OFF”. 4. The switch button (A) Fig. 8, is labeled “ON” and “OFF”. Depress the “ON” end of the switch button to start motor. Depress the “OFF” end of the switch button to stop motor. HOW TO HOLD SANDER Model 340 is designed to be held either around the housings, Fig. 9, or by the top of the housings, Fig. 10. When sanding for long periods, it is recommended you periodically alternate between the two holding positions. A Fig. 8 Fig. 9 Fig. 10 DUST COLLECTOR Model 340 is supplied with a Dust Collector Assembly that is attached to the sander as outlined below. An accessory hose assembly, is available to connect the sander to a remote vacuum system. CAUTION: Do not operate the sander without: (A) the dust collector installed, or (B) an appropriate vacuum system attached. Dust could be blown into your eyes and the level of dust in the atmosphere would be greatly increased. TO INSTALL DUST COLLECTOR 1. CAUTION: DISCONNECT TOOL FROM POWER SOURCE. 2. Position dust collector (A) Fig. 11, to sander nozzle as shown. Seat collector firmly onto the nozzle, (B) Fig. 11A. 3. Periodically remove the dust container (A) Fig. 12, from its mounting flange (B), and empty the collected dust. 9 900008 - 04-29-02.qxd 5/23/02 2:17 PM Page 10 A A B Fig. 11 Fig. 11A NOTE: A slight twisting action will ease removal and reassembly. Tap container lightly to remove compacted dust. DO NOT WASH CONTAINER. Dry compressed air may be used to blow out container. CAUTION: Wear safety glasses while using compressed air. B A Fig. 12 ACCESSORY PADS Model 340 is supplied with a Standard Profile, PSA (Pressure Sensitive Adhesive) Pad. This pad and some special purpose pads are available to fit this machine. To install one of these accessory pads: 1. CAUTION: DISCONNECT TOOL FROM POWER SOURCE. 2. Remove abrasive from sander. 3. Use a T20 Torx screwdriver to remove the four pad retaining screws (see Fig. 13), and lift the foam pad (and its aluminum backing plate), off the sander. 4. Position the accessory pad to the sander and attach with the four screws from Step 3. 10 900008 - 04-29-02.qxd 5/23/02 2:17 PM Page 11 Fig. 13 USING THE SANDER SANDING PROCEDURE The normal weight of the machine is sufficient for efficient sanding. Do not put additional pressure on the machine. This would only slow down the speed of the pad, reducing the sanding efficiency and put an additional burden on the motor. In addition, it might cause the sander to jump on the work. Let the sander do the work. FINE FINISHING The action of the Porter-Cable Finishing Sander causes thousands of tiny abrasive grits to move in circular orbits against the work at high speed. Each grain moves in the same direction at a constant speed so the cutting action is uniform over the entire pad surface. Crossing and re-crossing of the abrasive grits from all directions quickly levels surface irregularities to a fine, uniform smoothness. Start the work with an abrasive grit just coarse enough to remove the high spots and excessive roughness. Follow with a second sanding using a grit one or two grades finer. Continue with successively finer grits until the desired finish is obtained. DO NOT GO FROM A COARSE GRIT TO A VERY FINE GRIT IN ONE STEP. Going from a coarse grit to a very fine grit in one step could make it difficult to remove swirl marks that might have been made by the coarse grit abrasive. Use the finest grits practical for the roughing operation and then finish by using successively finer grits. 11 900008 - 04-29-02.qxd 5/23/02 2:17 PM Page 12 REMOVING PAINT AND VARNISH CAUTION: Read and follow all instructions in the ADDITIONAL SAFETY RULES FOR PAINT REMOVAL section of this manual. Your sander will do a good job of removing old paint and varnish if two precautions are taken. First, be sure to use a coarse, open coat abrasive to avoid the usual clogging of the abrasive surfaces. Second, keep the machine moving over new areas to avoid heating and softening the material being removed. Try to work the entire surface down at the same time by working in wide, overlapping arcs. Do not concentrate on small areas. If liquid removers or heaters are used to speed the work, be sure the surface is cool and dry and the excess material has been scraped away with a putty knife or other suitable scr...