Bosch 3915 - Manual (Page 7)

Electrical Requirements
1. Connect this saw to a 120V, 15-amp branch cir-
cuit with a 15-amp time delay fuse or circuit
breaker. Using the wrong size fuse can damage
the motor.
2. Fuses may “blow” or circuit breakers may trip
frequently if motor is overloaded. Overloading
can occur if you feed the blade into the work-
piece too rapidly or start and stop too often in
a short time.
3. Most motor troubles may be traced to loose or
incorrect connections, overload, low voltage
(such as small size wire in the supply circuit or
too overly long supply circuit wire). Always
check the connections, the load and the supply
circuit whenever motor does not work well.
Electric Brake
Your saw is equipped with an automatic electric
brake which is designed to stop the blade from spin-
ning in about five (5) seconds after you release the
trigger switch. It is useful when making certain cuts
in wood where a coasting blade would result in a
wide, imprecise cut.
When electrical power is lost due to
blown fuse or other causes, the
motor will gradually slow down and the braking action
is initiated ONLY by the release of the trigger switch.
The electric blade brake of your miter saw has been
designed for highest degree of reliability, but unex-
pected circumstances such as contamination on the
commutator and brushes or failure of motor’s compo-
nents can cause the brake not to activate. If this con-
dition occurs, turn the saw “ON” and “OFF” four to
five times without contacting the workpiece. If the
tool operates but the brake does not consistently stop
the blade in about five (5) seconds, DO NOT use saw
and have it serviced immediately.
The brake action of this saw is not
intended as a safety feature.
Remember to let the saw blade come to a complete
stop before raising the blade from the workpiece. As
always the guard system is your best protection
against unintentional contact with a spinning saw
blade. NEVER wedge open or defeat the closing
action of the lower guard.
7.
Black
From Field
Grey From
Brake Lead
Black From
Power Cord
Wiring Diagram
This wiring diagram can be used only with switch (Part No. 2610911881) supplied with your
miter saw. Other switches may look the same, but internal switch components can be different,
thus creating electrical shock hazard if wired according to this diagram.
WARNING
!
WARNING
!
WARNING
!