Bosch Power Tools 4212L manual Electrical Requirements, Electric Brake

Safety

“READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by BULLET (●) symbol list- ! WARNING ed BELOW and other safety precautions, may result in serious personal injury.

Double Insulated Tools Extension Cords

Double insulation is a design concept used in electric power tools which eliminates the need for the three wire grounded power cord and grounded power supply system. It is a recognized and approved sys- tem by Underwriter’s Laboratories, CSA and Federal OSHA authorities.

●Servicing of a tool with double insulation require care and knowledge of the system and should be performed only by a qualified service techni- cian.

●WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS.

●POLARIZED PLUGS. Your tool is equipped with a polarized plug (one blade is wider than the other), this plug will fit in a polarized outlet only one way. If the plug does not fit fully in the out- let, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. To reduce the risk of electrical shock, do not change the plug in any way.

“SAVE THESE INSTRUCTIONS”

●Replace damaged cords immediately. Use of damaged cords can shock, burn or electrocute.

●If an extension cord is necessary, a cord with adequate size conductors should be used to prevent excessive voltage drop, loss of power or overheating. The table shows the correct size to use, depending on cord length and nameplate amperage rating of tool. If in doubt, use the next heavier gauge. Always use U.L. and CSA listed extension cords.

RECOMMENDED SIZES OF EXTENSION CORDS

Tools		120 Volt A.C. Tools
Ampere		Cord Length in Feet
Rating		Cord Size in A.W.G.
	25	50	100	150
3-6	18	16	16	14
6-8	18	16	14	12
8-10	18	16	14	12
10-12	16	16	14	12
12-16	14	12	N/A	N/A

NOTE: The smaller the gauge number, the heavier the cord.

Electrical Requirements

1.Connect this saw to a 120V, 15-amp branch cicuit 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 workpiece 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 when- ever motor does not work well.

Electric Brake

Your saw is equipped with an automatic electric brake which is designed to stop the blade from spinning 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, impre- cise cut.

When electrical power is lost due to ! WARNING 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.

!WARNING 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.