Dymo 31-250 instruction manual Removing and Replacing Drum Sanding Belt

Page 13

3. Use a 9/16” socket with an extension (not supplied).

Place it in one of the two holes where the hole plugs were

removed. Loosen one hex bolt, then the other to relieve

tension on the motor. (One is shown at (D) Fig. 26). Apply

upward pressure on the motor (located under the machine)

to relieve tension on the belt. Replace or change the belt

F

positions on the pulleys. IMPORTANT: When the belt is on

the inner pulleys (F) Fig. 26, the sanding drum speed is 3300

SFM. When the belt is positioned on the outer pulleys (G)

Fig. 27, drum speed is 2210 SFM. NOTE: Position the poly-

v drive belt on the pulleys correctly to provide maximum

performance with minimal belt wear.

4. After the belt (E) Fig. 28 has been repositioned or

replaced on the pulleys, apply downward pressure on the

motor and tighten the two hex head bolts (D) (loosened in

STEP 3).

5. Use light finger pressure on the belt (E) Fig. 28 midway

E

Fig. 26

D

F

between pulleys to check for proper tension. A deflection of

approximately 3/16" is correct.

6. Replace the hole plugs (B) Fig. 25.

REMOVING AND REPLACING DRUM SANDING BELT

The drum sanding belt is held on the drum with a spring clip located on each side of the drum.

DISCONNECT MACHINE FROM POWER

SOURCE.

1.Open drum cover (B) Fig. 31 to remove the sanding belt (A) Fig. 29.

2.Press spring clips (C) Fig. 29 together and remove one end of sanding belt (A). NOTE: Clip must be fully depressed against the drum support.

3.Rotate the drum, (D) Fig. 31 by hand until you reach the other end spring clip. Squeeze the spring clip to open and remove the sanding belt (A).

4.To replace the sanding belt, press spring clip (C) Fig.

30together and insert one end of sanding belt (A) through the slot (S) in the drum and into the spring clip

(C). The taper cut end of the sanding belt must line up with the edge of the drum.

5.Tightly wrap sanding belt (A) Fig. 31 around the drum cylinder (D), keeping each wrap close to the previous edge. IMPORTANT: DO NOT OVERLAP THE EDGES OF THE SANDING BELT (A). Insert the other end of the sanding belt into the left spring clip (C) Fig. 29 as tightly as possible.

6.The sanding belt will stretch during use. Periodically, press spring clip (C) Fig. 29 and reinsert stretched length into the clip.

A

D

S

C

Fig. 30

E

G

Fig. 27

D

E

Fig. 28

A

D

C

Fig. 29

D A B

Fig. 31

13

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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 ContentsAttaching Legs AssemblyAttaching the Handwheel Attaching Thickness Scale Attaching and Leveling Feed TableLocking the Drum Switch in the OFF Position Operating Controls and AdjustmentsTable FEED/SPEED Switch Starting and Stopping the MachineDisconnect Machine from Power Source Checking and Adjusting Feed Belt Tracking and TensionRaising and Lowering Feed Table TrackingSetting the Height Scale Checking and Adjusting Table Parallel to DrumChanging Drum SPEEDS/REPLACING Drive Belt Table Height AT this TimeTo relieve tension on the belt. Replace or change the belt Removing and Replacing Drum Sanding BeltDust Collection Removing and Replacing Feed BeltWhen do I Change the Drum SPEED? Frequently Asked QuestionsWhat is Recommended for Dust Collection What Factors Affect Sanding OPERATIONS?What are the Maximum and Minimum Sanding Stock SIZES? What Causes Burn MarksHOW do I Sand Multiple BOARDS? HOW do I Sand the Edges of BOARDS?HOW do I Sand Boards Wider than 18? HOW do I Sand Glued BOARDS?HOW do I GET STARTED? Tips for Increasing Sanding Belt LifeTension on Timing Belt Table Movement Troubleshooting GuideChecking the Table Support Plate Lock NUT Adjustment Checking Lock NUT AdjustmentBrush Inspection and Replacement MaintenanceDrum Motor Overload Protection Feed Belt Motor Overload ProtectionPage Page PARTS, Service or Warranty Assistance AccessoriesCanadian PORTER-CABLE Delta Service Centers
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