Bosch GOL 20 D Professional User manual

Robert Bosch GmbH
Power Tools Division
70745 Leinfelden-Echterdingen
Germany
www.bosch-pt.com
1 619 929 L41 (2012.07) T / 145 XXX
GOL Professional
20 D | 20 G | 26 D | 26 G | 32 D | 32 G
de Originalbetriebsanleitung
en Original instructions
fr Notice originale
es Manual original
pt Manual original
it Istruzioni originali
nl Oorspronkelijke gebruiksaanwijzing
da Original brugsanvisning
sv Bruksanvisning i original
no Original driftsinstruks
fi Alkuperäiset ohjeet
el Ðñùôüôõðï ïäçãéþí ÷ñÞóçò
tr Orijinal işletme talimat
pl Instrukcja oryginalna
cs Původní návod k používání
sk Pôvodný návod na použitie
hu Eredeti használati utasítás
ru Îðèãèíàëüíîå ðóêîâîäñòâî ïî
ýêñïëóàòàöèè
uk Îðèã³íàëüíà ³íñòðóêö³ÿ ç åêñïëóàòàö³¿
ro Instrucţiuni originale
bg Îðèãèíàëíà èíñòðóêöèÿ
sr Originalno uputstvo za rad
sl Izvirna navodila
hr Originalne upute za rad
et Algupärane kasutusjuhend
lv Instrukcijas oriģinālvalodā
lt Originali instrukcija
cn 正本使用说明书
tw 正本使用說明書
ko 사용 설명서 원본
th หนังสือคูมือการใชงานฉบับตนแบบ
id Petunjuk-Petunjuk untuk
Penggunaan Orisinal
vi BΩng hõëng dÿn nguy›n bΩn
ar
fa
ΕΎϤϴϠόΗϞϴϐθΘϟ΍ΔϴϠλϷ΍
Ϡλ΍ έΎ ίήσ ΎϤϨϫ΍έ
OBJ_BUCH-1239-003.book Page 1 Friday, July 27, 2012 2:05 PM

3|
1 619 929 L41 | (18.6.12) Bosch Power Tools
15
12
20
19
17 18
1214
GOL 20 D/GOL 20 G
GOL 26 D/GOL 26 G
GOL 32 D/GOL 32 G
1
23
4
5
6
7
8
12
14
9
12
13
16
10
11
OBJ_BUCH-1239-002.book Page 3 Monday, June 18, 2012 10:51 AM

8| English
English
Safety Notes
Read and observe all instructions. SAVE
THESE INSTRUCTIONS FOR FUTURE REFER-
ENCE.
fHave the measuring tool repaired only through quali-
fied specialists using original spare parts. This ensures
that the safety of the measuring tool is maintained.
Product Description and
Specifications
Please unfold the fold-out page withtherepresentationofthe
measuring tool and leave it unfolded while reading the operat-
ing instructions.
Intended Use
The measuring tool is intended for determining and checking
precise horizontal partitions. It is also suitable for measuring
heights, distances and angles.
Product Features
The numbering of the product features shown refers to the
illustration of the measuring tool on the graphic page.
1Objective lens
2Optical peep sight
3Bubble vial mirror
4Eyepiece cover
5Adjusting screw for sighting line
6Eyepiece
7Circular bubble vial
8Compensator lock
9Horizontal circle reference mark
10 Horizontal circle
11 Adjusting screw of circular bubble vial
12 Levelling screw
13 Tripod mount 5/8" (on the rear side)
14 Horizontal drive screw
15 Serial number
16 Focusing knob
17 Allen key
18 Adjusting pin
19 Case
20 Plumb-bob
The accessories illustrated or described are not included as stand-
ard delivery.
Technical Data
Automatic level GOL20D GOL20G GOL26D GOL26G GOL 32 D GOL 32 G
Article number 3 601 K68 400 3 601 K68 401 3 601 K68 000 3 601 K68 001 3 601 K68 500 3 601 K68 501
Working range 60 m 60 m 100 m 100 m 120 m 120 m
Height accuracy for
an individual meas-
urement 3 mm/30 m 3 mm/30 m 1.6 mm/30 m 1.6 mm/30 m 1 mm/30 m 1 mm/30 m
Deviation for 1 km
double run leveling 2.5 mm 2.5 mm 1.5 mm 1.5 mm 1.0 mm 1.0 mm
Accuracy of the
bubble vial 8´/2 mm 8´/2 mm 8´/2 mm 8´/2 mm 8´/2 mm 8´/2 mm
Compensator
– Levelling range
– Magnet dampening
±15´
z
±15´
z
±15´
z
±15´
z
±15´
z
±15´
z
The measuring tool can be clearly identified with the serial number 15 on the type plate.
OBJ_BUCH-1239-002.book Page 8 Monday, June 18, 2012 10:51 AM

English | 9
Bosch Power Tools 1 619 929 L41 | (18.6.12)
Operation
fCheck the levelling and indication accuracy of the
measuring tool each time before using and after longer
transport of the measuring tool.
fProtect the measuring tool against moisture and direct
sun light.
fDo not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for long time. In case of large varia-
tions in temperature, allow the measuring tool to adjust to
the ambient temperature before putting it into operation.
In case of extreme temperatures or variations in tempera-
ture, the accuracy of the measuring tool can be impaired.
fAvoid any impact to or dropping of the measuring tool.
After severe exterior effects to the measuring tool, it is rec-
ommended to carry out an accuracy check (see “Accuracy
Check of the Measuring Tool”, page 10) each time before
continuing to work.
fPlace the measuring tool in the provided case when
transporting it over larger distances (e.g. in the car).
Ensure that the measuring tool is correctly placed in
the transport case. When placing the measuring tool in
thecase,the compensatorislocked; otherwise,itcouldbe
damaged in case of intense movement.
Setting Up/Aligning the Measuring Tool
Mounting on the Tripod
Set up the tripod stable and safe against tipping over or slip-
ping off. Place the measuring tool via the tripod mount 13 on-
to the male thread of the tripod and screw the measuring tool
tight with the locking screw of the tripod.
Roughly level the tripod.
Over short distances, the measuring tool can be carried
mounted on the tripod. To ensure that the measuring tool is
not damaged during this, the tripod must be held vertically
during transport, and should not be carried lengthwise over
the shoulder.
Aligning the Measuring Tool
Align the measuring tool with the levelling screws 12 so that
theairbubbleis positionedinthecentreof thecircularbubble
vial 7.
Turnthe first two levellingscrews Aand Bto move theair bub-
ble so that it is centred between the two levelling screws.
Then turn the third levelling screw Cuntil the air bubble is po-
sitioned in the centre of the circular bubble vial.
Any remaining deviation of the measuring tool to the horizon-
tal plane following the balancing of the circular bubble vial is
compensated by means of the compensator.
While working, regularly check (e.g. by viewing through the
bubble vial mirror 3) whether the air bubble is still in the cen-
tre of the circular bubble vial.
Centring the Measuring Tool over a Point on the Ground
If required, centre the measuring tool over a point on the
ground. For this, hang the plumb-bob 20 onto the locking
screw of the tripod. Align the measuring tool above the point
on the ground either by moving the measuring tool on the tri-
pod or by adjusting the tripod.
Focusing the Telescope
Remove the lens cap from the objective lens 1.
Direct the telescope against a bright object or
hold a white sheet of paper in front of the ob-
jective lens 1. Turn the eyepiece 6until the
crosshair appears sharp and deep black.
Telescope
–Image
– Magnification
– Field of view
– Clear objective
aperture
– Minimum measur-
ing distance
–Stadiaratio
– Stadia addition
erect
20x
1°30´
36 mm
0.3 m
100
0
erect
20x
1°30´
36 mm
0.3 m
100
0
erect
26x
1°30´
36 mm
0.3 m
100
0
erect
26x
1°30´
36 mm
0.3 m
100
0
erect
32x
1°30´
36 mm
0.3 m
100
0
erect
32x
1°30´
36 mm
0.3 m
100
0
Horizontal circle
graduation 1° 1gon 1° 1gon 1° 1gon
Tripod mount 5/8" 5/8" 5/8" 5/8" 5/8" 5/8"
Weight according to
EPTA-Procedure
01/2003 1.7 kg 1.7 kg 1.7 kg 1.7 kg 1.7 kg 1.7 kg
Degree of protection IP 54 (dust and splash water protected)
Automatic level GOL20D GOL20G GOL26D GOL26G GOL 32 D GOL 32 G
The measuring tool can be clearly identified with the serial number 15 on the type plate.
C
BA
C
BA
2.1.
OBJ_BUCH-1239-002.book Page 9 Monday, June 18, 2012 10:51 AM

10 | English
1 619 929 L41 | (18.6.12) Bosch Power Tools
Directthetelescopetowards thelevellingrod,if requiredwith
help of the optical peep sight 2.Turnthe focusing knob 16 un-
tilthegraduationfield ofthelevellingrod appearssharp.Align
the crosshair exactly with the centre of the levelling rod by
turning the horizontal drive screw 14.
When the telescope is correctly focussed, the crosshair and
the image of the levelling rod must remain aligned when mov-
ing your eye behind the eyepiece.
Measuring Functions
Always set up the levelling rod exactly vertical. Direct the
aligned and focussed measuring tool against the levelling rod
insuch a manner that the crosshair facescentrally against the
levelling rod.
Reading Off the Height
Read off the height of the levelling rod at the
centre line of the crosshair.
Height measured in the figure: 1.195 m.
Measuring a Distance
Centre the measuring tool above the point
from which on the distance is to be measured.
Read off the height of the levelling rod at the
topand bottomstadia lines. Multiplythe differ-
ence of both heights by 100 to receive the dis-
tance from the measuring tool to the levelling
rod.
Distance measured in the figure:
(1.347 m – 1.042 m) x 100 = 30.5 m.
Measuring Angles
Centre the measuring tool above the point from which on the
angle is to be measured.
Direct the measuring tool against point A. Rotate the horizon-
tal circle 10 with the zero point toward the reference mark 9.
Then direct the measuring tool against point B. Read off the
angle at the reference mark 9.
GOL 20 D/GOL 26 D/GOL 32 D: Angle measured in the
example: 45°.
GOL 20 G/GOL 26 G/GOL 32 G: Angle measured in the
example: 45 gon.
Accuracy Check of the Measuring Tool
Check the levelling and indication accuracy of the measuring
tool each time before using and after longer transport of the
measuring tool.
Checking the Circular Bubble Vial
Align the measuring tool with the levelling screws 12 so that
theairbubbleis positionedinthecentreof thecircularbubble
vial 7.
Rotate the telescope by 180°. When the air bubble is no long-
er in the centre of the circular bubble vial 7, the circular bub-
ble vial must be readjusted.
Readjusting the Circular Bubble Vial
Bring the air bubble of the circular bubble vial
7in a position between the centre and the end
position of the check by turning the levelling
screws 12.
UsingtheAllenkey17,turntheadjustingscrews11untiltheair
bubble is positioned in the centre of the circular bubble vial.
Check the circular bubble vial by rotating the telescope by
180°. If required, repeat the procedure or refer to an author-
ised Bosch after-sales service.
Checking the Compensator
After aligning and focussing the measuring tool, measure the
height at a reference point. Then press the lock button of the
compensator8andreleaseagain. Measuretheheightagain at
the reference point.
If both heights do not exactly match, have the measuring tool
repaired by an authorised Bosch after-sales service.
Checking the Crosshair
A measuring distance of approx. 30 m is required for the
check. Set up the measuring tool in the centre and levelling
rods Aand Bat both ends of the measuring distance.
A B
AB
x°
9
10
9
10
17
11
AB
30 m
a1b1
d
a1– b1= d
OBJ_BUCH-1239-002.book Page 10 Monday, June 18, 2012 10:51 AM

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 dbe-
tween the height a1of levelling rod Aand the height b1of lev-
elling rod B.
Example:
a1=1.937m
b1=1.689m
a1–b1=1.937m–1.689m=0.248m=d
Setup themeasuring toolapprox. 1 maway fromlevelling rod
A. After aligning and focussing the measuring tool, read the
height a2at levelling rod A.
Subtractthepreviously calculated value dfromthe measured
height a2in order to receive the set value for the height b2at
levelling rod B.
Measure height b2at 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:
a2=1.724m
d=0.248m
a2–d= 1.724 m – 0.248 m = 1.476 m
GOL 20 D/G: When measuring, height b2must be 1.476 m
±6 mm.
GOL 26 D/G: When measuring, height b2must be 1.476 m
±3 mm.
GOL 32 D/G: When measuring, height b2must be 1.476 m
±2 mm.
Readjusting the Crosshair
Unscrew the eyepiece cover 4. Using the adjusting pin 18,
turn adjusting screw 5clockwise or anticlockwise, until the
calculated set value for height b2is reached when measuring
on levelling rod B.
Screw on eyepiece cover 4again.
Example:
When measuring b2, 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.
Handlethe lenses with particularattention. 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.Abag ofsilicagel dryerfor theremovalof 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
outby an authorised after-sales service centrefor 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: [phone]
Fax: [phone]
E-Mail: [email protected]
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: [phone]
Fax: [phone]
AB
1 m
a2b2
a2– d = b2
d
18 5
OBJ_BUCH-1239-002.book Page 11 Monday, June 18, 2012 10:51 AM

12 | English
1 619 929 L41 | (18.6.12) Bosch Power Tools
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: [phone]
Fax: [phone]
Inside New Zealand:
Phone: [phone]
Fax: [phone]
Outside AU and NZ:
Phone: [phone]
www.bosch.com.au
Republic of South Africa
Customer service
Hotline: [phone]
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Bosch Headquarters
Midrand, Gauteng
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
People’s Republic of China
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Service Hotline: [phone]
Fax: [phone]
E-Mail: [email protected]
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Hong Kong Co. Ltd.
21st Floor, 625 King’s Road
North Point, Hong Kong
Customer Service Hotline: [phone]
Fax: [phone]
E-Mail: [email protected]
www.bosch-pt.com.hk
Indonesia
PT. Multi Mayaka
Kawasan Industri Pulogadung
Jalan Rawa Gelam III No. 2
Jakarta 13930
Indonesia
Tel.: [phone]
Fax: [phone] 23
E-Mail: [email protected]
www.bosch-pt.co.id
Philippines
Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio Global City,
1634 Taguig City, Philippines
Tel.: [phone]
Fax: [phone]
[email protected]
www.bosch-pt.com.ph
Bosch Service Center:
9725-27 Kamagong Street
San Antonio Village
Makati City, Philippines
Tel.: [phone]
Fax: [phone]
[email protected]
Malaysia
Robert Bosch (S.E.A.) Sdn. Bhd.
No. 8A, Jalan 13/6
G.P.O. Box 10818
46200 Petaling Jaya
Selangor, Malaysia
Tel.: [phone]
Fax: [phone]
[email protected]
Toll-Free: 1800 880 188
www.bosch-pt.com.my
Thailand
Robert Bosch Ltd.
Liberty Square Building
No. 287, 11 Floor
Silom Road, Bangrak
Bangkok 10500
Tel.: [phone] – 18 88 (10 lines)
Fax: [phone]
Robert Bosch Ltd., P. O. Box 2054
Bangkok 10501, Thailand
OBJ_BUCH-1239-002.book Page 12 Monday, June 18, 2012 10:51 AM

Français | 13
Bosch Power Tools 1 619 929 L41 | (18.6.12)
Bosch Service – Training Centre
2869-2869/1 Soi Ban Kluay
Rama IV Road (near old Paknam Railway)
Prakanong District
10110 Bangkok
Thailand
Tel.: [phone] – 4
Fax: [phone]
Fax: [phone]
Singapore
Robert Bosch (SEA) Pte. Ltd.
11 Bishan Street 21
Singapore 573943
Tel.: [phone]
Fax: [phone]
[email protected]
Toll-Free: 1800 333 8333
www.bosch-pt.com.sg
Vietnam
Robert Bosch Vietnam Co. Ltd
10/F, 194 Golden Building
473 Dien Bien Phu Street
Ward 25, Binh Thanh District
84 Ho Chi Minh City
Vietnam
Tel.: [phone] ext. 413
Fax: [phone]
[email protected]
www.bosch-pt.com
Disposal
Measuringtools, accessories and packaging should be sorted
for environmental-friendly recycling.
Subject to change without notice.
OBJ_BUCH-1239-002.book Page 13 Monday, June 18, 2012 10:51 AM