Dymo 31-250 Checking and Adjusting Table Parallel to Drum, Setting the Height Scale

Page 12

CHECKING AND ADJUSTING TABLE PARALLEL TO DRUM

NOTE: The table to drum parallelism (D) Fig. 18 has been set at the factory. Distance (D) should be the same front to back over the entire width of the feed belt. It is best to measure the board thickness at several places along the length and width to ensure parallelism. To check and/or to adjust parallelism (D) follow the steps below.

1.To check if the feed table is parallel with the drum cylinder, sand a wide board (B) Fig. 19A (preferably 12" or more in width x 2 feet long) until it is flat across the total surface area on both sides.

A.To do a quick check, draw pencil lines (C) Fig. 19B extending across the width of the board at several places along the length of the board. DO NOT ADJUST THE

TABLE HEIGHT AT THIS TIME.

B.Reverse the board (end for end) and run the board through the sander. If the sanding table is set properly, the drawn lines will disappear. If the lines still appear on the left or right side of the board, the table height must be adjusted.

2.Use a ½” wrench to hold the leveling screws (E) and (F) Fig. 20. Insert 3/16" hex wrench (D), and loosen the hex screws. Rotate leveling screws (E) and (F) Fig. 20, one flat at a time until parallel. NOTE: One flat on the leveling screw will raise or lower the table .010". Turn leveling screw (E) Fig. 20 clockwise to lower the table or counterclockwise to raise the table. Adjust both leveling screws (E) and (F) the same amount and in the same direction.

3.Tighten screws loosened in step 2.

D

D

Fig. 18

B

 

 

C

Fig. 19A

Fig. 19B

SETTING THE HEIGHT SCALE

D

F E

Fig. 20

1.Run a piece of lumber through the drum sander (Fig. 22) to finish one side of the board.

2.Use a square (A) Fig. 23 to measure the thickness of the lumber.

3.Loosen the screw (B) Fig. 24. Move scale up or down until the cursor shows the exact board thickness that was measured in STEP 2. Tighten the screw.

A

Fig. 22

Fig. 23

CHANGING DRUM SPEEDS/REPLACING DRIVE BELT

The drum sander has two drum speeds - 2210 SFM or 3300 SFM, depending on the belt arrangement on the motor pulley and drum pulley.

To change the sanding drum speeds or to replace the drive belt:

DISCONNECT MACHINE FROM POWER SOURCE.

1.Raise the top drum cover (A) Fig. 25.

2.Remove the two hole plugs (B) Fig. 25.

B

Fig. 24

A

G

B

G

12

Fig. 25

 

Image 12
Contents 18 x 36 Drum Sander Safety Guidelines Definitions Important Safety InstructionsStay ALERT, Watch What YOU are Doing Additional Safety Rules For Drum Sanders Hold the Work Firmly when sandingPower Connections Unpacking and Cleaning ForewordCarton Contents Drum Sander PartsAssembly Attaching LegsAttaching the Handwheel Attaching and Leveling Feed Table Attaching Thickness ScaleOperating Controls and Adjustments Locking the Drum Switch in the OFF PositionTable FEED/SPEED Switch Starting and Stopping the MachineChecking and Adjusting Feed Belt Tracking and Tension Disconnect Machine from Power SourceRaising and Lowering Feed Table TrackingChecking and Adjusting Table Parallel to Drum Setting the Height ScaleChanging Drum SPEEDS/REPLACING Drive Belt Table Height AT this TimeRemoving and Replacing Drum Sanding Belt To relieve tension on the belt. Replace or change the beltRemoving and Replacing Feed Belt Dust CollectionFrequently Asked Questions When do I Change the Drum SPEED?What is Recommended for Dust Collection What Factors Affect Sanding OPERATIONS?What Causes Burn Marks What are the Maximum and Minimum Sanding Stock SIZES?HOW do I Sand Multiple BOARDS? HOW do I Sand the Edges of BOARDS?HOW do I Sand Glued BOARDS? HOW do I Sand Boards Wider than 18?HOW do I GET STARTED? Tips for Increasing Sanding Belt LifeTable Movement Troubleshooting Guide Tension on Timing BeltChecking the Table Support Plate Checking Lock NUT Adjustment Lock NUT AdjustmentMaintenance Brush Inspection and ReplacementDrum Motor Overload Protection Feed Belt Motor Overload ProtectionPage Page Accessories PARTS, Service or Warranty AssistanceCanadian PORTER-CABLE Delta Service Centers