Bosch PSB 800-2 RA Operations Instructions download pdf (Page 22)

22 | English 2 609 002 333 • 4.6.07

To switch off the machine, release the On/Off switch

9 or when it is locked with the lock-on button 8, briefly

press the On/Off switch 9 and then release it.

Gear Selection, Mechanical

f Actuate the gear selector 11 only when the

machine is at a standstill.

Two speed ranges can be preselected with the gear

selector 11.

1st gear:

Low speed range; for working with large

drilling diameter or for driving screws.

2nd gear:

High speed range; for working with small

drilling diameter.

PSB 1000-2 RCE/PSB 1000-2 RCA:

Position “S”:

Low speed range; for working with high

torque, e.g. when working with core bits

or for driving screws.

If the gear selector 11 cannot be fully engaged, lightly

rotate the drive spindle with the drill bit by twisting the

drill chuck.

Overload Protection

(PSB 1000-2 RCE/PSB 1000-2 RCA)

f If the tool insert becomes caught or jammed,

the drive to the drill spindle is interrupted.

Because of the forces that occur, always hold

the power tool firmly with both hands and

provide for a secure stance.

The overload protection indicator 6 flashes when the

machine is subject to excessive load. Reduce the load

to continue working.

When overloading, the power tool switches off and the

overload protection indicator 6 lights up continuously.

Release the On/Off switch 9 and switch the machine

on again to continue working.

The overload protection indicator 6 lights up continu-

ously when the gear selector 11 is in the “S” position.

f The overload protection is deactivated when

the gear selector 11 is in the “S” position. Be

prepared for high reaction torque when the

drilling tool jams.

After longer periods of working at low speed, allow the

machine to cool down by running it for approx.

3 minutes at maximum speed with no load.

Adjusting the Speed/Impact Frequency

The speed/impact rate of the switched on power tool

can be variably adjusted, depending on how far the

On/Off switch 9 is pressed.

Light pressure on the On/Off switch 9 results in low

speed/impact rate. Further pressure on the switch

increases the speed/impact rate.

Preselecting the Speed/Impact Frequency

(see figure M)

(PSB 700-2 RE/PSB 780-2 RE/PSB 800-2 RA)

With the thumbwheel for speed preselection 30, the

required speed/impact frequency can be preselected

even during operation.

The required speed/impact frequency depends on the

material and the working conditions, and can be deter-

mined through practical testing.

Electronic Speed Preselection (Speed Control)

(PSB 1000-2 RCE/PSB 1000-2 RCA)

With the “Speed Control” thumbwheel 7, the required

speed/impact frequency can be preselected even dur-

ing operation.

The required speed/impact frequency depends on the

material and the working conditions, and can be deter-

mined through practical testing.

For working with low speed.

II:

For working with medium speed.

III:

For working with high speed.

For working with maximum speed.

Operating Instructions

f Apply the power tool to the screw/nut only

when it is switched off. Rotating tool inserts can

slip off.

Tips

After longer periods of working at low speed, allow the

machine to cool down by running it for approx.

3 minutes at maximum speed with no load.

For drilling in tiles, set the selector switch 2 to the “Drill-

ing” symbol. Do not switch over to the symbol “Impact

Drilling” or work with impact until after drilling through

the tile.

Use carbide tipped drill bits when working in concrete,

masonry and brick wall.

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Bosch PSB 800-2 RA Operations Instructions Page 22

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Bosch PSB 800-2 RA Operations Instructions Page 22

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