Bosch mm-Si plus EU1510 Series Technical manual

1
Solar Energy
Planning and Installation Instructions
μm-Si plus EU1510
For Specialists Version : ENG/2011/12

2
Solar Energy
List of Contents
1SAFETY INSTRUCTIONS AND EXPLANATION OF SYMBOLS 3
1.1 Safety instructions 3
1.2 Explanation of symbols 3
1.3 General safety instructions 3
2GENERAL PRODUCT PROPERTIES 4
2.1 Specifications for the product series 4
2.2 Specifications for the junction box system 4
2.3 Nameplate 5
2.4 Intended use 5
2.5 Normal conditions of use / environmental conditions 5
2.6 EC declaration of conformity 6
2.7 Certification 6
3INSTRUCTIONS ON THE SYSTEM LAYOUT 6
3.1 General instructions 6
3.2 Guidelines on the electrical system layout 7
3.3 Guidelines for attaching solar modules up to 2,400 Pa 8
3.4 Transport and storage before installation 10
4STANDARDS AND REGULATIONS 11
5INSTALLATION 11
5.1 Safety instructions 11
5.2 Storage and transport on the construction site 12
5.3 Checks before installation 12
5.4 Module installation 12
5.5 Electrical connection 13
6ENVIRONMENTAL PROTECTION 13
6.1 Packaging 13
6.2 Disposal 13
7INSPECTION, MAINTENANCE AND CARE 13
7.1 Inspection 14
7.2 Cleaning 14
8CONTACT ADDRESSES, CONTACT PERSONS 15

Solar Energy
1Safety instructions and
explanation of symbols
1.1 Safety instructions
General
Read these instructions carefully and com-
pletely until you have fully understood the
required safety measures and the individual
steps in the installation process.
Do not start installation work until the re-
quired physical and organizational conditions
are in place to implement the necessary
safety precautions.
Keep these instructions in a safe place.
Installation and initial operation
Solar modules should be installed and put
into operation by a specialist company only.
Maintenance and repair
Repairs to the system should only be carried
out by a specialist company.
Only use original replacement parts.
1.2 Explanation of symbols
Signal words indicate the seriousness of a hazard
which will be caused if precautionary measures are
not taken.
Caution means that material damage may
be caused.
Warning means that injuries to persons or
serious material damage may be caused.
Danger means that serious injuries to per-
sons may be caused. There is risk of death
in particularly serious cases.
Notes contain important information regard-
ing situations where there is no hazard to
human health or equipment.
1.3 General safety instructions
For your own safety and that of your employees or
third parties and for the protection of the system you
are installing, please follow the safety instructions in
this section as well as those in Section 5. There may
be other hazards which arise in addition to the ones
mentioned in the safety instructions here. You will
need to take additional safety precautions in such
cases. Carry out a risk assessment for this purpose if
necessary.
Danger!
Do not disconnect, pull or open the coupler under
load!
Danger!
Use insulated tools only. Do not insert any metal ob-
jects into plug couplers!
Danger!
Do not touch any live electrical components!
Danger!
The solar module features a junction box without a
bypass diode. A permanent or regular shadowing ef-
fect must be avoided at all costs!
Warning!
Modules may become hot and their surfaces can
reach up to 90 °C!
Warning!
The voltages in modules increase when modules are
connected in series. A maximum of 10 modules may
be connected in series!
Warning!
Connecting modules in series leads to high system
voltages even under poor light conditions and may
damage modules and connected system components!
3

Solar Energy
2General product properties
2.1 Specifications for the product se-
ries
Basic specifications for the μm-Si plus EU1510 prod-
uct series
Efficiency 7.3 – 9.0 %
Output 105 – 130 Wp
Grading -0/ +4.99 Wp
Initial Voc
(before stabilization) 90 V
Stab. Voc
(after stabilization) 89 V
Temperature coefficients
Voc
Isc
Pmpp
-0.37 %/K
+0.08 %/K
-0.33 %/K
System voltage 1,000 V
Reverse-current resis-
tance 6 A
Application class accord-
ing to IEC 61730 A (buildings, commercial) A-1 (accessible ground-
mounted and on-roof in-
stallations)
Protection class II
Weight 25 Kg + 0.7
Surface 1.43 m²
Weight/surface 16.78 Kg/m²
Note:
All power ratings on the data sheet and product label
refer to a stabilized solar module output.
Note:
Electrical parameters are typical mean values from
historical production data. Bosch Solar Energy AG
does not assume any guarantee for the accuracy of
this data for future production batches. All data and
figures are subject to a tolerance of 10 %, unless
specified otherwise.
Warning!
Under normal conditions, a photovoltaic module is
likely to experience conditions that produce more cur-
rent and/or voltage than reported at standard test
conditions. Accordingly, the values of Isc and Voc
marked on this module should be multiplied by a fac-
tor of 1,25 when determining component voltage rat-
ings, conductor current ratings, fuse sizes, and size of
controls connected to the PV output!
2.2 Specifications for the junction box
system
Junction box system properties
Cable cross-section 2.5 mm²
Length of connecting cable
with PV-KST 4 coupler
socket (MINUS)
1,000 mm
Length of connecting cable
with PV-KBT 4 MC4 coupler
plug (PLUS)
500 mm
Contact material Tin-plated copper
Conductive material Copper
Rated voltage 1,000 V
Rated current 10 A
Protection rating for junction
box IP 65
UV-resistant & weatherproof Yes
Flame class UL 94-V0
Temperature range -40 to +90 °C
4

Solar Energy
PV-KBT 4 MC4 coupler plug
PV-KST 4 coupler socket
Figure 1: Multi-Contact MC4 type coupler system
2.3 Nameplate
The name plate is on the rear of the solar module. It
contains all information required to comply with DIN
EN 50380. It also includes information on the mod-
ule's output and other electrical data. The serial num-
ber is also featured as a Code 39 (3of9) barcode.
Figure 2: μm-Si plus EU1510 series nameplate
2.4 Intended use
μm-Si plus EU1510 series solar modules have been
very carefully built for use in ground-mounted and
rooftop photovoltaic systems. They are not intended
for any other use. No liability will be accepted for any
damage in cases of different use.
Improper applications or use particularly refers to:
Applications which focus light on the surface
of the module.
Applications where the solar modules must
comply with requirements for overhead glaz-
ing or toughened glass which can be walked
on or offers fall protection.
Note:
Bosch Solar Energy AG's warranty and guarantee be-
comes null and void if the module and module com-
ponents (couplers, cabling, junction box, label and
other parts) are tampered with in any way!
2.5 Normal conditions of use / envi-
ronmental conditions
Normal conditions of use / environmental condi-
tions
Module temperature -40 - +90°C
Humidity 85 % (rh)
Hail storm 25 mm/ 23 m/s
Mechanical load-bearing
capacity vertical to the
module plane
2,400 Pa
5

Solar Energy
Non-standard conditions of use:
Environmental conditions which exceed the
aforementioned limit values
Environments containing acidic, alkaline,
abrasive or other chemical substances
Partially shaded environments
2.6 EC declaration of conformity
This equipment complies with the applicable require-
ments specified in European Directive 2006/95/EC
(Low Voltage Directive).
The equipment has been tested in compliance with
IEC 61646 and IEC 61730
You can find the declaration of conformity at
www.bosch-solarenergy.de.
2.7 Certification
The product is certified in accordance with the follow-
ing standards and guidelines:
IEC 61646 (TÜV Rheinland)
IEC 61730 (TÜV Rheinland)
DIN EN61701: 1995 (pending)
You can find these product certificates at www.bosch-
solarenergy.de.
3Instructions on the system
layout
3.1 General instructions
The solar modules are a key component in a photo-
voltaic system. Solar electricity outputs and the length
of lifecycles in systems depend on a variety of factors.
The following instructions on the mechanical and
electrical system layout serve to ensure an optimum
layout for systems containing μm-Si plus EU1510 so-
lar modules. You can find relevant standards and
guidelines in Section 4.
You should also familiarize yourself with ap-
plicable local standards, guidelines, direc-
tives and official regulations, such as techni-
cal conditions for connecting to the respec-
tive power supplier's grid, handling asbestos
roofs, lightning protection regulations and fire
safety regulations.
μm-Si plus EU1510 solar modules are prod-
ucts which contain two panes of glass. En-
sure that nobody can tread on the module
surfaces and fastening elements during in-
stallation and maintenance.
Allow for access to the system for installa-
tion, inspection and maintenance purposes,
ensuring that sufficient space is provided for
carrying out installation and maintenance
work.
The optimum orientation for surfaces used to
generate solar energy depends on the lati-
tude and local weather conditions. In non-
tracking systems in Europe, the most solar
power is generated when solar modules are
placed at an angle of around 30° ± 15° with
the solar module's active surface facing the
Equator. You can find more detailed informa-
tion on surface orientation in relevant spe-
cialist publications. If solar modules are
placed in a suboptimal position, this gener-
ally leads to loss of output.
6

Solar Energy
If lightning protection systems are legally required
as an integral part of fire safety measures, they
must not be affected by PV power generation
systems.
The solar module must be installed on a
non-combustible, fire-resistant subsurface.
The location of a PV system must be care-
fully selected. If a system is placed near
trees and buildings, these may cause a
shadowing effect on the PV system for part
of the day. Permanent or regular shading
must be carefully avoided.
The direct current side must always be fitted
with a DC-compatible switch with breaking
capacity to ensure that the direct current side
can be disconnected when under load.
3.2 Guidelines on the electrical system
layout
Danger!
The solar module features a junction box
without a bypass diode. A permanent or regular
shadowing effect must be avoided at all costs.
Acceptable system configurations
Mounting
system System voltage Functional grounding
Bosch Solar
Rack Slide 1,000 V Not required
Other 1000 V Minus terminal
Warning!
The initial values of the module series are to be taken
into account when designing the layout and dimen-
sioning the system!
Danger!
Only Type MC4 couplers may be used to connect
modules. Do not remove the pre-fabricated coupler
assemblies!
Warning!
Type μm-Si plus EU1510 modules must not be di-
rectly connected to previous products, such as μm-Si
plus and μm-Si plus EU1310!
Warning:
If μm-Si plus EU1510 modules are not installed using
the Bosch Solar Rack Slide mounting system, a func-
tional grounding system must be fitted to the module's
line conductor (see permissible system configura-
tions)!
All PV strings in a PV system should be built
using the same technology, should feature
the same number of PV modules connected
in series and should be positioned at the
same angle (horizontally and vertically) to
keep mismatching and malfunctions to an
absolute minimum and improve output from
the PV system.
All PV modules in a PV system should also
feature the same rated values for their elec-
trical characteristic values, including those
regarding short-circuit currents, open-circuit
voltages, currents at maximum output, volt-
ages at maximum output and rated outputs
(under conformance testing conditions).
Solar modules feature a reverse-current re-
sistance of 6 A. The system should be de-
signed in such a way that a reverse current
resistance greater than 6 A is avoided.
These solar modules have been tested for a
maximum system voltage of 1,000V. This
means a maximum of 10 modules can be
electrically connected in series per string.
The maximum voltage for the connected sys-
tem components is to be taken into account
while doing so.
You should install inherently short circuit-
proof and earth fault-proof wiring for the indi-
cated system voltage.
7

Solar Energy
You should fasten the solar module connec-
tion cables without applying tensile stress on
the junction box.
μm-Si plus EU1510 solar modules are pro-
tected by insulation (Protection Class II). As
a result, they do not have a ground wire con-
nection and do not require protective ground-
ing.
Note:
In the case of low-resistance grounding in a line con-
ductor, the overall generator voltage in the non-
grounded line conductor comes into contact with
ground potential. This is to be taken into account
when selecting and dimensioning protection systems
such as overvoltage protection.
Disconnection devices must be fitted be-
tween the module and inverter.
Cabling and disconnection elements are to
be selected and dimensioned while taking
into account external influences, such as re-
sistance to UV light and heat.
Ensure that the system does not come into
direct contact with saltwater.
Note:
Bosch Solar Energy AG does not accept any respon-
sibility for damage to equipment which has been op-
erated with Bosch Solar μm- Si plus EU1510 modules
based on information not obtained from technical data
sheets or operating instructions.
3.3 Guidelines for attaching solar
modules up to 2,400 Pa
Solar modules are a key component in a photovoltaic
system and are exposed to a wide range of mechani-
cal loads when installed. Such loads consist of sur-
face loads acting vertically to the plane, such as wind,
snow and, possibly, live loads. In the case of horizon-
tal and inclined solar modules, elements of dead load
must also be absorbed and channeled through the
fastening and support system.
In view of these considerations, Bosch a-Si plus solar
modules are to be mounted by trained specialists in
accordance with recognized technical standards while
taking into account applicable industrial standards
and regulations.
Standard DIN 1055- 4 “Action on Structures” contains
essential rules for all construction types regarding the
planning of the support framework for structures, in-
cluding their foundations, and must be observed when
dimensioning and designing the mounting and sup-
port system. IEC 61646 regulates, among other
things, the mechanical load-bearing capacity of solar
modules. The bearing capacity of solar modules for a
load of 2,400 Pa according to IEC 61646 is only
achieved if the following general instructions and
guidelines for the permanent and secure attachment
of solar modules are observed:
Solar modules must be secured in an upright
position with the junction box at the top, i.e.
laser lines should run vertically or parallel to
the slope of the roof.
Solar modules must be attached to the longi-
tudinal side along the specified clamping
sections with clamps at least 200 mm long.
Alternatively, the clamping length may be in-
creased, so that solar modules are provided
with two-sided linear support. However,
there must be a minimum support length of
200 mm to withstand both wind suction and
pressure loads. This is ensured by using suf-
ficiently stable profile sections and suitable
mechanical fasteners.
The supporting structure or substructure
must be adequately dimensioned based on a
structural analysis and adapted to the envi-
ronmental conditions locally to ensure that
the maximum permissible deflection or de-
formation under a load of L/100 is not ex-
ceeded. You also need to ensure that the
module does not distort or warp more than
30 mm across its diagonal line.
8

Solar Energy
Solar modules must be firmly mounted in
permanently elastic bedding. The solar mod-
ule and its glass must not come into direct
contact with metal components in the sub-
structure. You also need to ensure two glass
surfaces do not come into contact with one
another at any time.
The solar module will warp more than 40 mm
under a load of 2,400 Pa. A permanently
elastic overlay must be installed to prevent
direct contact between solar modules and
the supporting structure or substructure. The
length of this overlay must be sufficient to
prevent contact between the glass and metal
even if there is only a small gap between a
solar module and the substructure. Perma-
nently elastic beddings and overlays must be
made of weatherproof, ozone-resistant, UV-
stable materials.
(a) Supporting structure or substructure
(b) Fastening clamp 200 mm in length (vertical
on the long side of the module)
(c) Permissible clamping section for 200 mm
clamps
Figure 3: Diagram showing fastening with 200 mm
clamps. View from the left and from the front, not to
scale
The clamps may be placed over the glass to
a maximum depth of 15 mm; this depth must
be at least 8 mm to allow for installation and
position tolerances.
When solar modules are installed in an in-
clined position, they must be secured in a
suitable way to ensure they do not slip.
Solar modules must be fastened in such a
way that they are free of any stress or distor-
tion under all operating conditions.
Mechanical stress which is caused by install-
ing slightly curved solar modules on a flat
plane is permitted.
Water must not be allowed to accumulate on
solar modules and must be able to reliably
drain off modules. Stagnant water, caused
by precipitation or condensation, leads to
corrosion on the glass panes and the adhe-
sive seal (PVB encapsulant between front
and rear glass) and may cause blinding of
the glass and damage the adhesive seal (de-
lamination).
Solar modules should be positioned at an
angle of at least 7 degrees. Lower angles of
inclination mean modules are more likely to
get dirty. Suitable measures, such as regular
cleaning, should be taken for angles of incli-
nation less than 7 degrees in order to coun-
teract any negative effects.
The different thermal expansion coefficients
in the materials used must be taken into ac-
count when selecting and dimensioning the
base frame. The thermal expansion coeffi-
cient of glass is considerably lower than that
of metals, meaning that any changes in tem-
perature may cause stress in the structure
due to such differences.
9

Solar Energy
(a) Supporting structure or substructure
(b) Linear fastening section and / or pressure plate
(vertical along the long side of the module)
Figure 4: Diagram showing the two-sided linear fas-
tening. View from the front, not to scale
You must maintain the specified gaps be-
tween fastening points for the vertical and
horizontal fastening clamps (see diagram).
Use the fastening torques for screws found
in the mounting system supplier's instruc-
tions to ensure a permanently elastic, firm
mount for solar modules.
You must prevent sealants, such as silicone
or butyl, from coming into contact with the
encapsulant between the two glass panes
(PVB or EVA encapsulant).
Warning!
The maximum permissible mechanical stress limits
may be exceeded due to pressure from the clamping
systems or if you tread on the module!
3.4 Transport and storage before in-
stallation
One packaging unit contains 20 solar modules and
consists of a two-section cardboard box standing on a
Euro-pallet.
Instructions on storing modules in transport packag-
ing:
No more than two packaging units may be
stacked on top of one another, i.e. no more
than two units in a stack.
Do not store in damp conditions.
Always store on a flat, even surface
Secure open packaging units properly before
transportation
Do not tread on packaging units.
Dimensions and weight of loaded transport
packaging:
Length 1,200 mm
Width 800 mm
Height 1,530 mm
Weight per module 25 Kg
Weight of transport packaging 535 Kg
Number of modules per packaging unit 20
Number of modules per truck 660
Number of packaging units per truck 33
Number of modules per container (40 ft.) 480
Number of packaging units per container
(40 ft.) 21
Number of modules per container (20 ft.) 220
Number of packaging units per container
(20 ft.) 11
10

Solar Energy
4Standards and regulations
The following standards and regulations must be
taken into account during planning, installation and
maintenance. This list is not exhaustive. Local official
regulations may also apply.
DIN VDE 0100-712 Low-voltage installations - Re-
quirements for special installations or locations - Solar
photovoltaic (PV) power supply systems (IEC 60364-
7-712:2002, modified).
DIN 1055 Action on Structures Parts 1 to 5.
Low Voltage Directive 2006/95/EC
Directive on the harmonization of the laws of Member
States relating to electrical equipment designed for
use within certain voltage limits.
IEC 60364-1 Electrical installations of buildings – Part
1: Fundamental principles, assessment of general
characteristics, definitions.
VDE 0126-23 Grid connected photovoltaic systems -
Minimum requirements for system documentation,
commissioning tests and inspection (IEC
62446:2009); German version EN 62446:2009.
VDE 0126-42 Installation and safety requirements for
photovoltaic (PV) generators (IEC 82/592/CD: 2009;
IEC 62548).
DIN IEC 60269-6 (In preparation) Low-voltage fuses
– Part 6: Supplementary requirements for fuse-links
for the protection of solar photovoltaic energy systems
(IEC 32B/543/CD: 2009).
Accident prevention regulations
Local standards and guidelines,
i.e. official regulations on lightning protection.
Technical conditions for connection required by
the respective electric utility.
5Installation
5.1 Safety instructions
μm-Si plus EU1510 Series solar modules are glass
products and convert light into electrical energy even
under very weak light conditions. In view of this, the
following safety instructions must be adhered to:
Warning!
Take adequate precautions to prevent falls and elec-
tric shock. You must comply with employers' liability
insurance association regulations on work safety!
Warning!
Do not install, service or clean cracked solar modules!
Warning!
Do not stand on the solar modules or fastening ele-
ments during installation, operation or maintenance!
Warning!
A solar module weighs 25 Kg. Two people are re-
quired to transport, position and fasten modules in
place. Anti-slip gloves or suction handles should be
used!
Caution!
Do not rest modules on a non-cushioned surface!
Caution!
Secure the modules firmly when taking a break from
work to ensure that they do not slide, fall or get blown
over by the wind!
Caution!
Secure work tools to ensure they do not fall onto the
glass surface!
11

Solar Energy
5.2 Storage and transport on the con-
struction site
A transport packaging unit contains 20 μm-Si plus
EU1510 solar modules, in which solar modules are
graded according to their performance class.
Do not transport opened boxes without using
transport securing devices.
The boxes are made of cardboard and will
no longer be rigid in extremely damp condi-
tions.
Secure module boxes to prevent them tip-
ping over when you are unloading them.
Danger!
A full transport packaging unit weighs over 500 Kg.
Place packaging units on a sufficiently strong sub-
structure and level, non-inclined surfaces only!
Note:
The front of the solar modules is labeled "Front" on
the outside of the packaging unit.
5.3 Checks before installation
Check power rating and model type informa-
tion on the module. Do not interconnect
modules which have different electrical
power ratings and are different model types.
Check that solar module cabling and cou-
plers are undamaged.
Check that the solar modules are undam-
aged. Do not install any defective modules.
Note:
It is strongly recommended to make an immediate re-
cord of any possible transport damage, so that you
can make a claim at a later stage.
5.4 Module installation
Two people are needed to lift the modules
out of their packaging and carry them to the
installation location.
Once in the installation location, depending
on the type of application (roof or ground-
mounted system), you either connect the
coupler system on the module to the electri-
cal system (see Electrical connection) or
mount the module in its installation position.
Fasten the solar module securely and per-
manently into position. You will find the fas-
tening torques and further detailed installa-
tion instructions in the mounting system sup-
plier's documentation.
Fasten cabling with UV-resistant materials in
a way that ensures that the connection cable
is relieved of any strain.
Warning!
Do not rest modules on a non-cushioned surface or
strike them against the substructure when transport-
ing or installing them!
Warning!
Do not use chemical substances as an aid to install
modules!
Warning!
Do not use the connecting cables or couplers to carry
solar modules under any circumstances!
12

Solar Energy
5.5 Electrical connection
μm-Si plus EU1510 solar modules are fitted with a
MC4 coupler system in the factory. The following
points must be observed when interconnecting mod-
ules. You can find further information on the coupler
system in Section 2.
Fasten couplers of the same type together.
The coupler connection is firmly in position
when you hear it click into place.
Connection cables must feature a minimum
cross-section of 2.5 mm² and must be ap-
proved for the maximum system voltage.
Use the correct, original tool if you need to
unlock the coupler connection.
Danger!
Do not disconnect, pull or open the coupler under
load!
Warning!
Do not use any chemical substances as an aid to
connect the coupler system!
Note
The junction box and couplers pre-fitted in the factory
must not be opened or removed!
6Environmental protection
Environmental protection is a key principle of the
Bosch Group's company policy. Product quality, prof-
itability, and environmental protection are equally im-
portant goals for us. Environmental protection laws
and regulations are strictly complied with. We ensure
that the environment is protected by using the best
possible technology and materials while taking finan-
cial considerations into account.
6.1 Packaging
We take part in local packaging recovery schemes to
ensure that packaging is recycled as effectively as
possible. All packaging materials are environmentally
friendly and re-usable.
6.2 Disposal
Defective or old solar modules must not be thrown
away with the household waste. They should be dis-
posed of in the correct manner.
7Inspection, maintenance
and care
You can make a considerable contribution to protect-
ing the environment if your solar modules undergo
maintenance on a regular basis. When solar modules
and system components are properly maintained, this
not only has a positive effect on yields, but also en-
sures that your system preserves its value.
Regular, expert maintenance may also be a require-
ment if you wish to make any warranty or guarantee
claims.
We recommend that the system be inspected or ser-
viced by a specialist company on a half-yearly basis.
Only original replacement parts should be used during
maintenance.
Danger!
Shut the system down before carrying out any work!
Danger!
Take all necessary fall protection measures before
carrying out any work. Do not tread on modules dur-
ing maintenance!
13

Solar Energy
Note:
Solar modules positioned at a low angle accumulate
dirt more easily. You can find instructions on mainte-
nance-friendly installation in Section 3.
Note:
The system should not be maintained in direct
sunlight or under extremely high insolation conditions
as module surfaces become extremely hot and elec-
trical voltages and currents reach a maximum level!
7.1 Inspection
The following tasks should be carried out during an
inspection:
Check solar modules for mechanical dam-
age (cracks, shattered glass). Replace dam-
aged modules immediately, carried out by a
specialist company.
Inspect coupler connections to ensure they
are firmly in place and free of corrosion.
Secure any cables and couplers which have
become loose using UV-resistant fastening
materials.
Check the spacing between solar modules;
re-position if necessary.
Ensure that the solar module is not in direct
contact with metal components in the sub-
structure, such as screws and rails. If neces-
sary, re-position solar modules or replace
the permanently elastic bedding.
Remove any dirt from solar modules; see
section on cleaning.
Check that fastening components such as
rails, clamps and anti-slip devices are se-
curely in position and, if required, re-fasten
securely or replace damaged components
according to the installation instructions.
7.2 Cleaning
You should use soft cloths and plenty of wa-
ter for cleaning.
Do not use high-pressure cleaners for clean-
ing.
The temperature of the water should not be
widely different from the temperature of the
solar module's surfaces, otherwise you risk
cracking the glass surface.
Do not use any sharp objects such as glass
scrapers or metal scourers to clean modules.
Any damage to glass surfaces due to
scratches will weaken the glass and cause it
to break.
Do not use cleaning agents. Do not use
abrasive, acid or alkaline cleaning agents
under any circumstances.
Do not step on the solar modules when
cleaning. Use inspection gangways or suit-
able machinery, such as a cherry picker or
an elevating work platform.
14

15
Solar Energy
8Contact addresses,
contact persons
How you can contact us...
Bosch Solar Energy AG
Robert-Bosch-Straße 1
99310 Arnstadt
Germany
Phone: [phone]
Fax: [phone]
[email protected]ch.com
www.bosch-solarenergy.de
Planning and Installation Instructions for the
μm-Si plus EU1510 Series
© Bosch Solar Energy AG, December 2011
Version: ENG/2011/12
We reserve the right to make any changes as a result
of technical advances and may do so without prior no-
tice.