Dymo 31-250 instruction manual Raising and Lowering Feed Table, Tracking, Tensioning

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RAISING AND LOWERING

THE FEED TABLE

To raise the feed table, turn the handwheel (A) Fig. 16 counter- clockwise. To lower the feed table, turn hand-wheel, (A) Fig. 16 clockwise. NOTE: Each 1/4 turn of handwheel (A) will increase or decrease the height of the table by 1/64".

CHECKING AND ADJUSTING FEED BELT TRACKING AND TENSION

A

Fig. 16

IMPORTANT: READ THIS COMPLETE SECTION BEFORE MAKING ANY ADJUSTMENTS TO BELT TRACKING OR TENSION.

TRACKING

DISCONNECT MACHINE FROM POWER SOURCE.

IMPORTANT: The feed belt runs slowly, therefore response time to adjustments may also be slow. Take your time.

1.The tracking and tensioning of the feed belt has been set at the factory. Before making any adjustments place a reference mark on the table on either side of the belt using a lead pencil. Using a visual aid mark will help the user observe the direction of belt movement over time. Turn feed/speed knob (E) Fig. 17A “ON" and adjust to the maximum speed. Let the belt run and observe tracking direction. If the belt does not make any measurable side movement within five minutes of running, no adjustment is needed.

NOTE: With a new belt, it is not unusual for one side of the belt to be tighter than the other to make the belt track. Frequent adjustments are normal for the first few hours use to allow for belt stretch. Adjustments to belt tracking can also affect belt tension.

2.If belt (F) is tracking to the right, use the 1/8" T-handle hex wrench provided. Turn the right set screw (B) Fig. 17A clockwise 1/4 turn or less.

3.If belt (F) is tracking to the left, use the 1/8" T-handle hex wrench provided. Turn the right set screw (B) Fig. 17A counterclockwise 1/4 turn or less.

NOTE: Only adjust one side at a time and let the movement stabilize before adjusting again. Continue to tighten or loosen this adjustment until the feed belt is tracking properly.

TENSIONING

4.Belt tension adjustment is needed if the belt slips on the rear drive roller during sanding operations.

5.To adjust belt tension, turn both set screws (A) and (B) Fig. 17A (one is shown at (B) Fig. 17B) clockwise in 1/4 turn increments, until the feed belt is tensioned sufficiently to prevent slipping. NOTE: When adjusting belt tension, turn both set screws the same amount. DO NOT over tension the belt. Excessive tension will cause premature wear of belt, bearings and overload the motor. Listen for motor load speed changes when adjusting belt tension.

NOTE: Adjustments to belt tension can affect belt tracking. Frequent adjustments are normal for the first few hours use to allow for belt stretch.

E

AB

F

Fig. 17A

B

Fig. 17B

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Contents 18 x 36 Drum Sander Important Safety Instructions Safety Guidelines DefinitionsStay ALERT, Watch What YOU are Doing Hold the Work Firmly when sanding Additional Safety Rules For Drum SandersPower Connections Foreword Unpacking and CleaningDrum Sander Parts Carton Contents Attaching the Handwheel Assembly Attaching Legs Attaching Thickness Scale Attaching and Leveling Feed TableStarting and Stopping the Machine Operating Controls and AdjustmentsLocking the Drum Switch in the OFF Position Table FEED/SPEED SwitchTracking Checking and Adjusting Feed Belt Tracking and TensionDisconnect Machine from Power Source Raising and Lowering Feed TableTable Height AT this Time Checking and Adjusting Table Parallel to DrumSetting the Height Scale Changing Drum SPEEDS/REPLACING Drive BeltTo relieve tension on the belt. Replace or change the belt Removing and Replacing Drum Sanding BeltDust Collection Removing and Replacing Feed BeltWhat Factors Affect Sanding OPERATIONS? Frequently Asked QuestionsWhen do I Change the Drum SPEED? What is Recommended for Dust CollectionHOW do I Sand the Edges of BOARDS? What Causes Burn MarksWhat are the Maximum and Minimum Sanding Stock SIZES? HOW do I Sand Multiple BOARDS?Tips for Increasing Sanding Belt Life HOW do I Sand Glued BOARDS?HOW do I Sand Boards Wider than 18? HOW do I GET STARTED?Checking the Table Support Plate Table Movement Troubleshooting GuideTension on Timing Belt Lock NUT Adjustment Checking Lock NUT AdjustmentFeed Belt Motor Overload Protection MaintenanceBrush Inspection and Replacement Drum Motor Overload ProtectionPage Page PARTS, Service or Warranty Assistance AccessoriesCanadian PORTER-CABLE Delta Service Centers
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