English

Electronic Control

The grinder has an electronic speed control which provides:

￿full speed at all times in the range up to rated load.

￿soft-start.

￿variable speed

￿Kickback Protection

The kickback protection feature cuts off the power to the motor and stops the power tool in the event of a sudden drop in the rotational speed of the wheel during operation (for example, if the wheel locks during cutting operation, etc.).

￿0 Voltage Re-start Protection

The 0 voltage restart protection feature prevents the power tool from restarting after the power has been temporarily cut off during operation.

￿Overload Protection

The overload protection feature shuts off the power to the motor in the event of overloading of the motor or a conspicuous reduction in rotational speed during operation.

NOTE:

The grinder is equipped with a rotational speed control circuit. The rotational speed may fluctuate slightly due to the conditions of use and working voltage.

ASSEMBLY AND OPERATION

APPLICATIONS

￿Removal of casting fin and finishing of various type of steel, bronze and aluminum materials and castings.

￿Grinding of welded sections or sections cut by means of an acetylene torch.

￿Grinding of synthetic resins, slate, brick, marble.

WARNING:

To avoid the risk of serious injury, NEVER use this grinder with cup wheels and/or saw blades.

PRIOR TO OPERATION

1.Power source

Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate.

NOTE:

When connected to the power supply, the built-in electronic control circuit shifts to standby status and the grinder becomes slightly warm, but this is not a malfunction.

CAUTION

Do not operate from a direct current power source, engine generator, booster or any other type of transformer. Doing so may not only cause damage to the grinder, but may lead to accidents.

2.Power switch

Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury. When the kickback protection, 0 voltage re-start protection or overload protection feature has been activated, return the power switch to the OFF position and wait for 1 second or more before re-

10starting the power tool.

3.Extension cord

When the work area is far away from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

WARNING:

Damaged cord must be replaced or repaired.

4.Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs.

If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.

5.Check your work environment

Ensure the following before operation;

￿No flammable gas, liquid, or object at worksite.

￿When grinding thin steel sheet it may cause a high booming noise.

To avoid such noise, place a rubber mat under the workpiece.

￿Clear the area of children or unauthorized personnel.

6.Mounting the wheel guard

Be sure to mount the wheel guard at an angle that will protect the operator’s body from injury by a broken wheel piece.

[How to attach and adjust the wheel guard] (Fig. 2)

￿Set the wheel ass’y to the packing gland.

￿Tighten M5 screw to secure the wheel guard while the lever is in closed position.

￿Perform the adjustment, of the wheel guard while the lever is released. (Loosen M5 screw and readjust if the wheel guard does not rotate smoothly.)