Bosch GOL Professional 20 D - Manual (Page 11)

English | 11
Bosch Power Tools 1 619 929 L41 | (18.6.12)
After aligning and focussing the measuring tool, read the
heights at both levelling rods. Calculate the difference d be-
tween the height a
1
of levelling rod A and the height b
1
of lev-
elling rod B.
Example:
a
1
= 1.937 m
b
1
= 1.689 m
a
1
– b
1
= 1.937 m – 1.689 m = 0.248 m = d
Set up the measuring tool approx. 1 m away from levelling rod
A. After aligning and focussing the measuring tool, read the
height a
2
at levelling rod A.
Subtract the previously calculated value d from the measured
height a
2
in order to receive the set value for the height b
2
at
levelling rod B.
Measure height b
2
at levelling rod B. When the measured val-
ue deviates by more than 6 mm (GOL 20 D/G), 3 mm
(GOL 26 D/G) or 2 mm (GOL 32 D/G) from the calculated set
value, the crosshair must be readjusted.
Example:
a
2
= 1.724 m
d = 0.248 m
a
2
– d = 1.724 m – 0.248 m = 1.476 m
GOL 20 D/G: When measuring, height b
2
must be 1.476 m
±6 mm.
GOL 26 D/G: When measuring, height b
2
must be 1.476 m
±3 mm.
GOL 32 D/G: When measuring, height b
2
must be 1.476 m
±2 mm.
Readjusting the Crosshair
Unscrew the eyepiece cover 4. Using the adjusting pin 18,
turn adjusting screw 5 clockwise or anticlockwise, until the
calculated set value for height b
2
is reached when measuring
on levelling rod B.
Screw on eyepiece cover 4 again.
Example:
When measuring b
2
, the value 1.476 m must be set.
Check the crosshair again. If required, repeat the procedure
or refer to an authorised Bosch after-sales service.
Maintenance and Service
Maintenance and Cleaning
Store and transport the measuring tool only in the supplied
case.
Keep the measuring tool clean at all times.
Do not immerse the measuring tool in water or other fluids.
Wipe off debris using a moist and soft cloth. Do not use any
cleaning agents or solvents.
Handle the lenses with particular attention. Remove dust only
with a soft brush. Do not touch the lenses with your fingers.
Before storing, allow the measuring tool and the case to dry
completely. A bag of silica gel dryer for the removal of residual
moisture is included in the case. Renew the bag of silica gel
dryer regularly.
If the measuring tool should fail despite the care taken in man-
ufacturing and testing procedures, repair should be carried
out by an authorised after-sales service centre for Bosch pow-
er tools. Do not open the measuring tool yourself.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the type plate of
the measuring tool.
For repairs, only send in the measuring tool in the case.
After-sales Service and Customer Assistance
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Our customer service representatives can answer your ques-
tions concerning possible applications and adjustment of
products and accessories.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
Tel. Service: +44 (0844) 736 0109
Fax: +44 (0844) 736 0146
E-Mail: [email protected]
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: +353 (01) 4 66 67 00
Fax: +353 (01) 4 66 68 88
A B 1 m
a
2
b
2
a
2
– d = b
2
d
18 5
OBJ_BUCH-1239-002.book Page 11 Monday, June 18, 2012 10:51 AM