Porter Cable 503 Manuel D'utilisation page 9

2. A lock button (B) Fig. 2 is
provided to keep motor running
continually without pressing the
trigger.
3. To lock the trigger switch ON,
squeeze the trigger as far as it will go,
push in lock button and release
trigger.
4. To unlock lock button, squeeze
trigger and release, freeing the lock
button.
TRACKING THE ABRASIVE BELT
NEVER allow abrasive belt to rub on
frame of sander. This action will cause
excessive wear to both the sander and
belt. To prevent damage, track the belt
in the following manner:
Make sure trigger
switch is OFF before connecting tool
to power circuit.
1. Lift machine clear of work and turn
motor on.
2. Turn belt aligning screw (A) Fig. 3,
in either direction until edge of belt runs flush with outer edges of the
pulleys.
3. Turn motor OFF and allow sander to come to a COMPLETE STOP
before putting it down.
ATTACHING AND CARE OF THE DUST BAG (503 ONLY)
The dust bag is completely assembled at the factory. To attach to the
sander, push the dust bag tube into the hole on the back of the sander.
For most efficient operation, empty the dust bag when it is less than half
filled. Remove the bag. Unzip the rear of bag and shake out the dust.
Occasionally, turn the bag inside out and brush the dust accumulations
from the inside.
Do not use sander in any position other than that shown in Fig. 4. Using
the sander in a vertical or upside-down position may cause excessive
gear wear because of a lack of lubrication.
SECURE WORK and maintain a FIRM GRIP on sander.
Friction between sanding belt and work will move the work backward
and the sander forward.
ALWAYS be sure switch is OFF before connecting sander
to power circuit.
OPERATIONS
9
B
A
Fig. 2
A
Fig. 3