RIDGID R4331 Operator's Manual page 7

ELECTRICAL
MOTOR SAFETY PROTECTION
This motor should be blown out or vacuumed frequently to
prevent sawdust buildup which can interfere with normal
motor ventilation.
 Connect this tool to a power source with the appropriate
voltage for your model and a 15-amp branch circuit with
a 15-amp time delay fuse or circuit breaker. Using the
wrong size fuse can damage the motor.
 If the motor won't start, turn off the power switch im-
mediately and unplug the tool. Check the cutter head to
make sure it turns freely. If the head is free, try to start
the motor again. If the motor still does not start, refer to
the Troubleshooting section.
Frequent "blowing" of fuses or tripping of circuit breakers
may result if:
 Improper or dull blades are used.
NOTE: Do not continuously use the thickness planer set
at maximum depth of cut (1/8 in.) or at full 13 in. width
of cut. Continuous use at maximum cutting capacity will
damage your motor.
 Motor is overloaded. Overloading can occur if a workpiece
is fed too rapidly or if the tool is misaligned.
 Motor circuit is fused differently from recommendations.
Always follow instructions for the proper fuse / breaker.
Do not use a fuse/breaker of greater capacity without
consulting a qualified electrician.
 Low voltage. Although the motor is designed for opera-
tion on the voltage and frequency specified on the motor,
normal loads will be handled safely on voltage no more
than ten percent above or below that figure. Heavy loads,
however, require that voltage at motor terminals equal the
voltage specified on the motor.
NOTE: Always check the connections, the load, and the sup-
ply circuit whenever the motor fails to perform satisfactorily.
1.800.561.8187
MOTOR OVERLOAD PROTECTOR
See Figure 2, page 20.
This planer is equipped with a overload protector device which
will automatically "trip" and cause the planer to shut down
if the motor is overloaded due to continuous heavy cutting.
The planer overload protector can only be reset manually
by the user after the planer has been allowed to adequately
cool. Allow 15–30 minutes.
Should the overload protector "trip":
 Turn switch OFF ( O ).
 Raise carriage and remove board.
 After 15-30 minutes, reset the overload protector by push-
ing the reset button on the top of the motor housing. An
audible click will indicate the overload protector is reset.
Once the button is reset, the tool may be started and
operated as normal.
NOTE: If the button won't click into place immediately,
the motor is still too hot and must be allowed to cool.
 If motor has cooled, button will remain in.
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WARNING:
To reduce the risk of serious personal injury from
thrown objects or blade contact from unexpected
starting, immediately turn off the tool if the
protector stops the motor. Remove the switch key
and allow the motor time to cool.
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