Delta 31-552 instruction manual Installing or Removing Abrasive Belt, Adjusting the Platen

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INSTALLING OR REMOVING ABRASIVE BELT

Your machine uses a 6"x48" belt. To install or remove the belt, proceed as follows:

DISCONNECT MACHINE FROM POWER SOURCE.

1.Remove the idler drum guard (A) and side guard (B) Fig. 20.

2.Turn the belt tension handle counterclockwise to reduce belt tension to a minimum. NOTE: It may be necessary when reducing belt tension that downward pressure be applied on the idler pulley (C) Fig. 21.

3.The sanding belt can then be easily slipped off or onto the drums, as shown in Fig. 21.

IMPORTANT: Lapless sanding belts can be run in either direction. Lapped belts should be installed so that the work will run OFF the lapped portion of the belt and not into the edge of the lap. Most sanding belts have a directional arrow on the inside of the belt to show the direction of rotation.

AFTER INSTALLING A NEW BELT, THE BELT MUST BE ADJUSTED FOR PROPER TENSION AND TRACKING.

ADJUSTING THE PLATEN

The platen (A) Fig. 24, is set at the factory 1/32 of an inch higher than the crown of the drums (B). This allows the belt, when properly tensioned, to lay flat on the platen and eliminate stretching and bulging which might occur if the platen is not at the right height.

When using the machine with a loose belt for "strapping," the platen is removed and replaced as follows:

DISCONNECT MACHINE FROM POWER SOURCE.

1.Remove the side cover (B) Fig. 20 and top idler drum guard (A) Fig. 20.

2.Remove the three screws (C) Fig. 26, that attach the platen to the machine and remove the platen.

3.When replacing the platen, attach it to the machine with the three screws (C) Fig. 26. Do not tighten the three screws.

4.Using a straight edge (D) adjust the platen (A) Fig. 26, so it is 1/32" higher than the crown of the drums (B), and tighten the three screws (C).

A

B

Fig. 20

C

Fig. 21

B

D

A

C

B

Fig. 26

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Contents Abrasive Belt Finishing Machine General Safety Rules Refer to them often Use them to instruct others Three Phase Installation Power ConnectionsSingle Phase Installation Grounding InstructionsUnpacking and Cleaning Extension CordsStand and Electricals AssemblyAssembling Machine to Stand Aligning PULLEYS, Assembling Belt and Adjusting Belt Tension Assembling Belt GuardAdjusting Sanding Belt Tension and Tracking Operating Controls and AdjustmentsLocking Switch OFF Position Starting and Stopping the Abrasive Finishing MachineAdjusting Table Adjusting Position of Sanding ARMInstalling or Removing Abrasive Belt Adjusting the PlatenAccessories Abrasive Belts Their Selection and USECanadian PORTER-CABLE Delta Service Centers