Porter-Cable 340 instruction manual Maintenance

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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 scraping tool before applying the sander.

CABINETS AND DOORS

The orbital motion of the Porter-Cable Finishing Sander is ideally suited for finishing doors, cabinet fronts and other installations where wood grain is often perpendicular to that of a joining piece. Since the motion is circular, the machine may be moved in any direction and crossed from one part to the other without regard to direction of grain. A uniform and smooth finish will result on both parts. The same procedure may be used when evening joints in all types of cabinet work. The sander may be worked on both sides and in all directions to obtain a smooth, matching joint. By properly changing from coarser to finer grit abrasives, an excellent finish will result.

MAINTENANCE

KEEP TOOL CLEAN

Periodically blow out all air passages with dry compressed air. Remove buildup of grime resulting from working with green or sappy wood. All plastic parts should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material.

CAUTION: Wear safety glasses while using compressed air.

FAILURE TO START

Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check for blown fuses or open circuit breakers in the line.

BRUSH INSPECTION AND LUBRICATION

For your continued safety and electrical protection, brush inspection and replacement on this tool should ONLY be performed by an AUTHORIZED PORTER-CABLE SERVICE STATION or a PORTER-CABLE/DELTA FACTORY SERVICE CENTER.

At approximately 100 hours of use, take or send your tool to your nearest authorized Porter-Cable Service Station to be thoroughly cleaned and inspected. Have worn parts replaced and lubricate with fresh lubricant. Have new brushes installed, and test the tool for performance.

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Contents Double Insulated General Safety Rules Electrical SafetyPersonal Safety Work AreaService Tools USE and CareSpecific Safety Rules and Symbols Jackson, TNAdditional Safety Rules for Paint Removal Replacement PartsAssembly Functional DescriptionMotor Extension Cord SelectionAttaching Stikit Abrasive Attaching Conventional AbrasivePaper Punch HOW to Hold Sander To Install Dust CollectorOperation To Start and Stop SanderAccessory Pads Using the Sander Sanding ProcedureFine Finishing Maintenance Accessories Service and RepairsPORTER-CABLE Limited ONE Year Warranty Canadian PORTER-CABLE Delta Service Centers