RIDGID R2720 Manual Del Operador página 10

OPERATION
To lock-on the sander:
 Depress the switch trigger.
 Push in the lock-on button.
 Release the switch trigger.
 Release the lock-on button.
NOTE: To release the lock, depress and release the switch
trigger.
OPERATING THE SANDER
See Figure 9, page 15.
Clamp or otherwise secure the work to prevent it from mov-
ing under the sander.
WARNING:
Unsecured work could be thrown back toward
operator causing injury.
Before placing sander on work surface, squeeze the switch
trigger and let the motor reach its maximum speed, then
lower the sander to the work surface with a slight forward
motion. Using the rear handle to control the sander and the
front handle only to guide it, move it slowly over the work.
Allowing the sander to remain in one place will result in an
uneven surface.
WARNING:
Keep a firm grip on sander with both hands at all
times. Failure to do so could result in loss of control
leading to possible serious injury.
The sander was designed to provide the proper weight on
the sanding belt.
Excessive pressure will result in the following:
 Uneven work.
 Clogged sanding belts.
 Premature sanding belt wear. Removal rate will not in-
crease.
 Motor damage.
 Irregular sanding belt tracking.
NOTE: If the sanding belt moves while sanding, you may
be applying too much pressure. When this occurs, remove
sander from workpiece. If belt tracking is properly adjusted,
sanding belt will return to its normal and correct position on
the drive roller and front roller.
Use a coarser belt when heavy sanding is desired, not heavy
pressure. The importance of this cannot be over-emphasized.
Weight has been built into the tool to give the most efficient
pressure at the proper location.
NOTE: The front roller of the sander was not designed for
contour sanding. Sanding on the front roller could cause
irregularity in sanding belt tracking and will damage the
front roller.
TO ADJUST SANDING BELT TRACkING
See Figure 10, page 15.
 Connect the sander to power supply.
 With sander positioned as shown below, pull switch trig-
ger and release immediately.
NOTE: This position is for adjustments only. Sanding belt
should not be in contact with workpiece or any foreign ob-
jects when making belt tracking adjustments.
 Observe tracking of sanding belt. If the sanding belt runs
inward, slowly turn the tracking knob clockwise. If the
sanding belt runs outward, slowly turn the tracking knob
counterclockwise. This should be done until you are sure
belt will not run off sander, or come in contact with internal
parts.
NOTE: After installing a new sanding belt, it may become
necessary to change the adjustment several times until the
belt becomes conditioned.
CAUTION:
If the sanding belt wears excessively on the inner
edge it is probably adjusted too far inward and is
rubbing against internal parts. If this is the case,
readjust the tracking knob.
 When you are sure the belt will not rub against internal
parts, start the sander and fine adjust the tracking knob
until the belt stabilizes.
When correctly adjusted, the outer edge of the belt will
be even with the outer edge of the sander. Belt life will be
greatly increased if a few seconds are spent adjusting the
belt tracking.
NOTE: Replace a torn sanding belt immediately.
WARNING:
Keep hands and fingers away from moving
sanding belt. Any part of body coming in contact
with moving sanding belt could result in serious
injury. Do not wear loose clothing or jewelry when
operating sander. They could get caught in moving
parts and foreign objects could get thrown from
sander causing injury.
WARNING:
The sander is designed to be operated as shown
in Figure 9, page 15 with both hands on the tool at
all times for maximum control. Never operate the
tool overhead or inverted from the proper operating
position; serious personal injury may result.
10 - English