Maintenance; Cleaning And Lubrication; Drum Maintenance; Conveyor Belt Replacement - Powermatic PM2244 Manual De Instrucciones De Operación Y Piezas

on the motor. Note that to get the best final finish,
however, the stock should be fed through the
machine so it will be sanded in line with the grain of
the wood on the final one or two passes.

9.0 Maintenance

Before doing maintenance on
the machine, disconnect it from the electrical
supply by pulling out the plug or switching off
the main switch. Failure to comply may cause
serious injury.

9.1 Cleaning and lubrication

For best results, make cleaning the sander a regular
shop procedure. Allowing excess build-up of dust
and debris can adversely affect performance
through loading of the abrasives, slippage on the
conveyor table, and/or the accumulation of material
inside the drums which can throw off the center of
balance.
Leave the dust collector on when cleaning dust from
the drums. Also brush the conveyor belt after
cleaning operations. If not cleaned, the conveyor
belt could allow stock to slip during sanding
operations.
NOTE: Bearings are pre-sealed and require no
lubrication.
•
Lubricate conveyor bushings as needed, and
check for wear.
•
Lubricate elevating leadscrew (A, Figure 18) as
needed.
•
Clean sawdust from abrasive strip and brush
dust from conveyor belt.
•
Keep gib areas
Periodically lubricate gibs lightly with grease.
•
Blow dust from motors and switches. Blow dust
from inside of sanding drum, which may cause
vibration or offset the center of balance.
•
Check all set screws for tightness on parts such
as bearings, conveyor bed, and couplings.
Figure 18
clean (B, Figure 18).

9.2 Drum maintenance

The drum should not require removal from the
machine under normal circumstances. Should
maintenance ever become necessary, the drum has
been designed for easy removal and replacement.
Remove four socket head screws (C, Figure 19).
Carefully lift out drum with coupling (D) attached.

9.3 Conveyor belt replacement

1. Disconnect sander from power.
2. Raise drum to highest position.
3. Loosen take-up screw nuts (Figure 11) on both
sides of conveyor to relieve belt tension, and
slide the driven roller fully inward.
4. Remove three (3) screws that attach conveyor
table to base. Lift up conveyor table and remove
it from machine. Avoid tearing the belt on any
edges underneath the conveyor bed. Do not
allow the Trackers to drop, as they may break.
5. Install new belt along with trackers (see sect.
11.0), and re-install conveyor table. Tension
and track the new belt.
Note: If the conveyor belt continually tracks to one
side of the machine, reversing the belt on the
conveyor bed may remedy the problem. To make
sure the conveyor bed is not twisted, place a level
on the conveyor bed. Level the machine if needed.
If there is still a problem, proceed with the steps
below:
Step 1: Check conveyor drive roller and driven roller
to make sure they are parallel to surface of conveyor
bed. To do this, first center conveyor belt on the bed.
Then lay a straight-edge on the exposed edge of
conveyor bed on left (outboard) side, extending it
over the roller. Note distance between roller and
straightedge.
Step 2: Now repeat Step 1 on right (inboard) side of
conveyor. Compare the measurements from side to
side. If they are not equal, loosen one of the
brackets that hold the roller in place. Tip this bracket
until distance between roller and straight-edge are
equal from side to side, then tighten bracket.
15
Figure 19