Functional Description, Assembly, Motor | Porter-Cable 340 instruction

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MOTOR

Many Porter-Cable tools will operate on either D.C., or single phase 25 to 60 cycle A.C. current and voltage within plus or minus 5 percent of that shown on the specification plate on the tool. Several models, however, are designed for A.C. current only. Refer to the specification plate on your tool for proper voltage and current rating.

CAUTION: Do not operate your tool on a current on which the voltage is not within correct limits. Do not operate tools rated A.C. only on D.C. current. To do so may seriously damage the tool.

EXTENSION CORD SELECTION

If an extension cord is used, make sure the conductor size is large enough to prevent excessive voltage drop which will cause loss of power and possible motor damage. A table of recommended extension cord sizes will be found in this section. This table is based on limiting line voltage drop to 5 volts (10 volts for 230 volts) at 150% of rated amperes.

If an extension cord is to be used outdoors it must be marked with the suffix W-A or W following the cord type designation. For example – SJTW-A to indicate it is acceptable for outdoor use.

Nameplate Ampere Rating

RECOMMENDED EXTENSION CORD SIZES FOR USE WITH PORTABLE ELECTRIC TOOLS

Length of Cord in Feet

115V	25 Ft.	50 Ft.	100 Ft.	150 Ft.	200 Ft.	250 Ft.	300 Ft.	400 Ft.	500 Ft.
230V	50 Ft.	100 Ft.	200 Ft.	300 Ft.	400 Ft.	500 Ft.	600 Ft.	800 Ft.	1000 Ft.
	18	18	18	16	16	14	14	12	12
0-2	18	18	18	16	16	14	14	12	12

2-3	18	18	16	14	14	12	12	10	10
3-4	18	18	16	14	12	12	10	10	8

4-5	18	18	14	12	12	10	10	8	8

5-6	18	16	14	12	10	10	8	8	6
6-8	18	16	12	10	10	8	6	6	6

8-10	18	14	12	10	8	8	6	6	4

10-12	16	14	10	8	8	6	6	4	4
12-14	16	12	10	8	6	6	6	4	2

14-16	16	12	10	8	6	6	4	4	2

16-18	14	12	8	8	6	4	4	2	2
18-20	14	12	8	6	6	4	4	2	2

FUNCTIONAL DESCRIPTION

FOREWORD

Model 340 Finishing Sander is equipped to accept STIKIT™ adhesive backed abrasives (41/2" width) or conventional abrasive sheets (41/2" x 51/2").

This Sander is suitable for coarse, medium or fine sanding of wood, metal and plastics. It is ideal for finishing cabinets, fitting screens and doors and for general finishing work in the shop.

ASSEMBLY

PREPARATION FOR SANDING

SELECTING THE RIGHT ABRASIVE SHEET

By selecting the proper type of abrasive, the finest finishes can be attained. In general, coarser grit sizes will remove the most material and finer grit sizes will produce the best finishes.