Bosch GRL160DHV - Dual-Axis Self-Leveling Rotary Laser Service Manual download pdf (Page 11)

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Initial Operation

• Protect the tool against moisture and

direct sun irradiation.

• Do not subject the tool to extreme

temperatures or variations in

temperature.

As an example, do not leave it in vehicles

for longer periods. In case of large

variations in temperature, allow the tool to

adjust to the ambient temperature before

putting it into operation. In case of extreme

temperatures or variations in temperature,

the accuracy of the tool can be impaired.

• Avoid heavy impact or and prevent the

tool from falling. After heavy exterior

impact on the tool, an accuracy check

should always be carried out before

continuing to work (see “Leveling

Accuracy”).

• Switch the tool off during transport.

Switch off the leveling unit, which can be

damaged in the case of intense movement.

Setting Up the Tool

1. Place the tool on a flat surface, or set it on

a standard surveyor’s tripod, using the

built-in 5/8-11 tripod mount (located on the

bottom of the unit).

Note: Due to the high leveling accuracy, the

tool reacts sensitively to ground vibrations and

position changes. Therefore, pay attention that

the position of the tool is stable in order to

avoid operational interruptions due

to re-leveling.

Turning on the Tool

1. Turn on the tool with its power switch. The

tool immediately starts the automatic

leveling. During the leveling, LED 2 flashes

green. The tool is leveled in as soon as the

LED 2 continuously lights up green.

2. To switch on the horizontal and/or vertical

laser beam, press the On/Off button 26

and/or 34 on the control panel of the

rotational laser level 3.

Note: Each time after switching on, the tool is

in rotational operation mode with the lowest

rotational speed.

Turning off the Tool

1. To switch off the horizontal and/or vertical

laser beam, press the On/Off button 26

and/or 34 again.

2. To switch off the tool, push the On/Off

switch 1 into position O. The LED 2

goes out.

• ALWAYS turn off the laser and the main

power switch before transporting or storing

the unit.

Power Standby Mode

When commands are not received for 20

minutes, the GRL160DHV automatically

enters the power standby mode to save

battery life. The LED 2 flashes green, once

per second, to indicate power standby mode.

The timer is reset each time a button is

pressed. The power automatically turns off

after eight hours in Power Standby mode.

When the tool enters power standby mode, it

"remembers" the settings that were in effect,

and returns to these settings when a

command is issued and power returns.

Current settings are not retained when power

is turned off with the main power switch.

• To override power standby mode, press

and hold the on/off button 26 or 34 for three

seconds. The unit emits a beep and two

"chirps," confirming that automatic power

standby is disabled. After automatic power

standby is disabled, the unit continues to

operate for a maximum period of

eight hours.

• To re-enable automatic power standby,

press and hold the button 26 or 34 for three

seconds. A beep and a single "chirp"

confirm the command.

Charge-control Indicator

When the LED 2 flashes yellow, the tool can still

be operated for approx. 5h. The LED continues

to flash until the batteries are replaced or

discharged.

Working with Automatic Leveling

Position the tool on a level and firm support,

or attach it to the tripod 50.

After switching on, the automatic leveling

function automatically compensates

irregularities within the self-leveling range up

to ±6°. The leveling is finished as soon as

the tool stops beeping, the LED turns green,

and the laser beams stop flashing.

If the automatic leveling function is not

possible, e.g. because the surface on which

the tool stands deviates by more than 6° the

tool beeps, the LED flashes red once per

second, and the laser beams flash once

per second.

Operation

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Bosch GRL160DHV - Dual-Axis Self-Leveling Rotary Laser Service Manual Page 11

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