Bosch GRL 150 HV Professional Original Instructions Manual page 30

OBJ_BUCH-757-004.book Page 30 Wednesday, December 10, 2008 4:25 PM
30 | English
Do not charge the battery pack 13 each time
after using, otherwise its capacity will be re-
duced. Charge the battery pack only when the
charge-control indicator 12 flashes or lights up
continuously.
A considerably reduced operating period after
charging indicates that the battery pack is used
up and must be replaced.
If the battery pack is empty, the measuring tool
can also be operated off of the battery charger 21
when connected to a power supply. Switch the
measuring tool off, charge the battery pack for
approx. 10 min and then switch the measuring
tool on again with the battery charger connected.
To change the battery pack 13, turn the locking
knob 16 to position and pull out the battery
pack 13.
Insert a new battery pack and turn the locking
knob 16 to the position.
Remove the battery pack from the measur-
ing tool when not using it for longer peri-
ods. When storing for longer periods, the
rechargeable batteries can corrode and dis-
charge themselves.
Charge-control Indicator
When the charge-control indicator 12 flashes
red for the first time, the measuring tool can still
be operated for approx. 2 h.
When the charge-control indicator 12 lights up
red continuously, measurements are no longer
possible. The measuring tool switches off auto-
matically after 1 minute.
Power Supply of the Laser Receiver
Use only alkali-manganese batteries.
Press the latch 24 of the battery lid outward and
open the battery lid 34.
When inserting the battery, pay attention to the
correct polarity according to the representation
on the inside of the battery compartment.
When the battery indication b appears for the
first time on the display 32, the laser receiver
can still be operated for approx. 3 h.
Remove the battery from the laser receiver
when not using it for longer periods. When
storing for longer periods, the battery can
corrode and discharge itself.
1 609 929 R48 | (10.12.08)
Operation
Starting Operation of the Rotational
Laser Level
Avoid heavy impact to or falling down of the
measuring tool. After severe exterior effects
to the measuring tool, it is recommended to
carry out an accuracy check (see "Levelling
Accuracy of the Rotational Laser Level",
page 33) each time before continuing to work.
Do not subject the measuring 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 measuring tool to ad-
just to the ambient temperature before putting
it into operation. In case of extreme tempera-
tures or variations in temperature, the accura-
cy of the measuring tool can be impaired.
Setting Up the Measuring Tool
Horizontal
position
Vertical
position
Position the measuring tool on a firm surface in
the horizontal or vertical position, mount it to a
tripod 48 or to the wall mount 43.
Due to the high levelling accuracy, the measur-
ing tool reacts sensitively to ground vibrations
and position changes. Therefore, pay attention
that the position of the measuring tool is stable
in order to avoid operational interruptions due
to re-levelling.
Switching On and Off
Do not direct the laser beam at persons or
animals (especially not at their eye level),
and do not stare into the laser beam your-
self (not even from a distance). Immediately
after switching on, the measuring tool sends
out the vertical plumb beam 9 and the varia-
ble laser beam 6.
For switching on the measuring tool, press the
On/Off button 4. The indicators 1, 3 and 12 light
up briefly. The measuring tool immediately
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