Bosch Power Tools 1812PSD, 1811PSD, 1810PSD manual Operating Instructions, Grinding Operations

BM 1609929J65 02-08 2/20/08 11:30 AM Page 9

Operating Instructions

! WARNING	Hold the tool with both hands
	while starting the tool, since

torque from the motor can cause the tool to twist.

Start the tool before applying to work and let the tool come to full speed before contacting the workpiece. Lift the tool from the work before releasing the switch. DO NOT turn the switch “ON” and “OFF” while the tool is under load; this will greatly decrease the switch life.

PADDLE SWITCH WITH

"LOCK-OFF"FEATURE

(Models 1810PSD, 1811PSD & 1812PSD

only)

The Paddle switch enables the operator to control the switch functions of "Lock-OFF", and "ON/OFF".

TO UNLOCK SWITCH AND TURN TOOL "ON": Push "Lock-OFF" switch release lever backward to unlock paddle switch, then squeeze paddle switch (Fig. 6).

TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.

PADDLE SWITCH WITH "LOCK-OFF" AND

"LOCK-ON" FEATURE

(Models 1810PS & 1811PS only)

The Paddle switch enables the operator to control the switch functions of "Lock-OFF", "ON/OFF" and "Lock-ON".

TO UNLOCK SWITCH AND TURN TOOL "ON": Push switch release lever backward to unlock ON/OFF switch, then squeeze paddle switch (Fig. 6).

TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.

"LOCK-ON" BUTTON

(Models 1810PS & 1811PS only)

The "Lock-ON" feature, incorporated into the paddle switch, is a convenience for long operations.

TO LOCK SWITCH "ON": After paddle switch has been activated push "Lock-ON" button at rear of tool completely in and release paddle switch (Fig. 6).

TO SWITCH TOOL "OFF": Squeeze and release paddle switch.

FIG. 6

PADDLE

SWITCH

"LOCK-OFF"

SWITCH

RELEASE LEVER

"LOCK-ON" BUTTON (Models 1810PS &

1811PS only)

Grinding Operations

SELECTING GRINDING WHEELS

!WARNING Before using a grinding wheel, be certain that its

maximum safe operating speed is not exceeded by the nameplate speed of the grinder. Do not exceed the recommended wheel diameter.

DISC GRINDING WHEELS

Grinding wheels should be carefully selected in order to use the grinder most efficiently. Wheels vary in type of abrasive, bond, hardness, grit size and structure. The correct

type of wheel to use is determined by the job. Use disc grinding wheels for fast grinding of structural steel, heavy weld beads, steel casting, stainless steel and other ferrous metals.

GRINDING TIPS

Efficient grinding is achieved by controlling the pressure and keeping the angle between wheel and workpiece at 10° to 15°. If the wheel is flat, the tool is difficult to control. If the angle is too steep, the pressure is concentrated on a small area causing burning to the work surface.

-9-