Schletter FS Uno User manual

FS DUO | 400224EN | V4 | INSTALLATION MANUAL | 202011 1
SCHLETTER SOLAR GMBH | SUBJECT TO MODIFICATIONS
FS UNO
INSTALLATION MANUAL
with SRF Foundation Posts

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Table of Contents
1. General Information ................................................................................................................................................................. 4
1.1. Short Description ....................................................................................................................................................................................4
1.2. Intended Use.............................................................................................................................................................................................4
1.3. Copyright and Intellectual Property Rights...................................................................................................................................4
1.4. Safety Precautions ..................................................................................................................................................................................5
1.5. Obligation of the Plant Owner / Operating Company...............................................................................................................7
1.6. Commitment of the Sta......................................................................................................................................................................7
1.7. Training of the Sta ................................................................................................................................................................................7
1.8. Additional documents relevant for the mounting......................................................................................................................8
2. Transportation, Loading and Unloading .............................................................................................................................. 8
2.1. Delivery of the components................................................................................................................................................................8
2.2. Preparing the delivery...........................................................................................................................................................................8
2.3. Provide forklift trucks and hoisting equipment...........................................................................................................................9
2.4. Check the scope of delivery (for completeness)..........................................................................................................................9
2.5. Storage of the components.................................................................................................................................................................9
3. Technical data...........................................................................................................................................................................10
3.1. System description and properties ............................................................................................................................................... 10
3.2. Rack tolerances ..................................................................................................................................................................................... 10
3.3. Systems overview................................................................................................................................................................................. 11
3.4. Components .......................................................................................................................................................................................... 12
3.4.1. Foundation posts.................................................................................................................................................................... 12
3.4.2. Module-bearing rails and connection elements......................................................................................................... 12
3.4.3. Strut assembly ......................................................................................................................................................................... 12
3.4.4. Girder assemblies and components................................................................................................................................ 13
3.4.5. Module clamps for vertical module mounting............................................................................................................ 14
3.4.6. Module clamps for horizontal module mounting...................................................................................................... 15
3.4.7. Module clamp adapter and connection elements for module clamps .............................................................. 15
3.4.8. Screws for standard module clamps ............................................................................................................................... 16
3.4.9. Auxiliary equipment / accessories.................................................................................................................................... 16
4. Mounting information............................................................................................................................................................17
4.1. Terrain....................................................................................................................................................................................................... 17
4.2. Foundation ............................................................................................................................................................................................. 18
4.2.1. Ramming (pile-driving) tolerances ................................................................................................................................... 18
4.2.2. Pile-driving obstacles and concreting ............................................................................................................................. 18
4.3. Tools .......................................................................................................................................................................................................... 19
4.3.1. Dening the positions of the foundation posts and marking these positions (staking).............................. 19
4.3.2. Pile-driving (ramming) ......................................................................................................................................................... 19
4.3.3. Rack mounting ........................................................................................................................................................................ 19
4.3.4. Module mounting .................................................................................................................................................................. 20
4.4. Torque specications .......................................................................................................................................................................... 20
4.4.1. Bolted connections in the substructure......................................................................................................................... 20
4.4.2. Fastening of the module clamps ...................................................................................................................................... 20
5. Assembly steps ........................................................................................................................................................................21
5.1. Pile-driving of foundation posts and applying corrosion protection.............................................................................. 21
5.2. Mounting the girder assembly....................................................................................................................................................... 23
5.3. Mounting the module-bearing rail (purlin)............................................................................................................................... 24
5.4. Mounting the purlin connectors (optional) .............................................................................................................................. 25
5.5. Mounting the module clamp adapter (optional) .................................................................................................................... 25
6. Module mounting and module clamping ..........................................................................................................................27
6.1. Module mounting and clamping in the case of vertical module bearing....................................................................... 28
6.2. Module mounting and clamping in the case of horizontal module bearing................................................................. 29
6.3. Module mounting and clamping in the case of combined module bearing................................................................. 30
7. Disassembly and disposal......................................................................................................................................................31
8. Maintenance and care ............................................................................................................................................................32
9. Warranty and liability .............................................................................................................................................................32

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1. General Information
1.1. Short Description
The system FS Uno is a one-support substructure for the mounting of photovoltaic modules in ground mount plants. The
supporting structure and the module-bearing rails are made of hot-dip galvanized steel, the fastening elements and screws/
bolts are made of steel or stainless steel. By means of the leveling holes, it is possible to adjust the system to the result of the
pile-driving process and even out tolerances. FS Uno allows to use framed as well as unframed modules that can be mounted
either in portrait or in landscape, or with the Schletter combined clamping system. It is also possible to mount additional
accessories for the cable management or components for the internal potential equalization.
1.2. Intended Use
FS Uno is a substructure for the mounting of photovoltaic modules. Any kind of dierent use that is not mentioned in these
Mounting Instructions or an incorrect mounting (e.g. the utilization of components made by other producers or non-
observance of tolerances specied here and/or exceeding the indicated loads) are considered as non-intended use and, thus,
exclude any liability of the manufacturer.
The manufacturer accepts no liability for damage caused by failure to observe these Mounting Instructions.
1.3. Copyright and Intellectual Property Rights
The entire content of these Mounting Instructions is the intellectual property of Schletter GmbH and is subject to the German
copyright law.
Any reproduction, editing, distribution, transfer to third parties - in whole or in part - and any kind of utilization beyond the
limits of the copyright law must be approved in writing by Schletter GmbH.
Schletter reserves the right to take legal action in case of infringements.
These Mounting Instructions are subject to change without notice.
All names of products stated in these Mounting Instructions are trademarks of Schletter GmbH and are herewith recognized
and acknowledged.
Schletter GmbH is not liable for any damage of the product or subsequential damage caused by the product that are due to
improper handling.
First and foremost, Schletter GmbH is not responsible or liable for failures and faults that are caused by modications made
by the customer or other persons.
There is no claim for availability of previous designs and for the ability to retrot delivered components to the respective
latest state of the series.
Schletter Solar GmbH has made considerable efforts to make sure that these Mounting Instructions are
free of errors and omissions.
Schletter Solar GmbH does not assume any responsibility or liability for possible errors included in these
Mounting Instructions and/or incidental, concrete or consequential damages arising from the
publication of these Mounting Instructions.
Mounting instruction FS UNO with SRF Foundation Posts | 2016.09 V.004
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf

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1.4. Safety Precautions
Please read these Mounting Instructions carefully before starting the assembly and keep it in a safe place for further reference.
Please observe and adhere to the regional and national applicable standards, building regulations and accident prevention
regulations.
This instruction manual contains guidelines and notices you have to observe in order to ensure your personal safety and
to prevent physical injuries or damage to property. Such safety and warning notes are marked with a warning triangle.
Depending on the kind and degree of danger, warning notices are displayed as follows:
DANGER
indicates that death or severe personal injury will result, if proper safety precautions are not taken.
WARNING
indicates that death or severe personal injury may result, if proper safety precautions are not taken.
CAUTION
indicates that minor personal injury can result, if proper safety precautions are not taken.
DANGER
due to operations with electricity. Electric power can lead to serious accidents and can cause severe
injuries. Appropriate safety precautions are to be taken by all means.
Securing of the working area
Before the start of construction, the building site must be inspected by a supervising person by sight check
or using plans showing all supply lines (water, electricity, gas) in the relevant area. For this purpose, the
position of all supply lines (water, gas electricity, etc.) must be marked using marking paint and unstable
ground and areas that are landslide-prone must be sealed o with stable barriers or warning signs.
Read and make sure you understand the safety and warning notes in these Mounting Instructions and
always apply them according to the relevant conditions and type of operation!
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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We absolutely recommend to observe the following protective measures when mounting of FS Uno:
Always wear ear protection when
carrying out noisy work
Remember to wear reective
vests and safety shoes all the time
Always wear a hard hat when
there might be falling objects or if
you could hurt your head in some
other way
Wear protective gloves when
working with sharp-edged
components
When carrying out dusty work,
always wear breathing protection
Wear safety glasses when
carrying out grinding and abrasive
operations in order to avoid any
danger to your eyes caused by
ying liquids or parts (sparks,
splinters)
Apart from that, please consider the applicable rules and regulations on accident prevention and environmental protection
that apply at the respective installation site as well as the work instructions and directives by the plant owner/operating
company or at the place of operation.
NOTICE
warns about situations that can lead to material damage and disturbances during the operating
procedure, if the instructions are not observed.
Important information and notices
regarding the product and its handling and/or mounting of the product are characterized by the
following symbol.
REFERENCES
All documents relevant for the mounting that are not included in these Mounting Instructions, are marked
with this symbol.
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
Mounting instruction FS UNO with SRF Foundation Posts | 2016.09 V.004

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1.6. Commitment of the Sta
Only people who give reason to expect that they will reliably do their job are allowed. Persons whose ability to react is
aected, for example by drugs, alcohol or medication, are NOT allowed.
• Every person that is involved in the mounting of FS Uno must have read and understood these Mounting Instructions,
especially chapter "1.4 Safety Precautions", as well as all relevant chapters regarding the corresponding operations.
• These Mounting Instructions should always be kept available and easily accessible for all persons involved.
• Only trained and instructed qualied personnel are allowed to execute the operations mentioned in this instruction manual.
• Sta that still is to be trained may only mount the FS Uno system under the supervision of an experienced person.
1.7. Training of the Sta
These Mounting Instructions are addressed to personnel qualied in the areas of transportation and loading, mounting,
disassembly and disposal, having the following qualications:
• The professional sta members must be capable of fullling the tasks they have been assigned with and must be able to
realize and avoid dangers on the basis of their professional formation, experience, expertise and their specic know-
ledge of the relevant regulations.
• The qualied sta members must have the required knowledge of the guidelines regarding safety, accident prevention
and environmental protection, as well as of loading and unloading regulations that apply at the respective construction site.
• The qualied personnel have the driving licenses required at the specic construction site to be able to drive site vehicles
and operate construction machines.
We recommend the operator to insist on a conrmation in writing in each case.
1.5. Obligation of the Plant Owner / Operating Company
The plant owner ensures that all parts of these Mounting Instructions are stored readily available and handy at the plant.
The plant owner/operating company undertakes to only let people work at and in the striking distance of the plant who
• have read and understood the parts of the mounting instruction that are relevant for the respective operations,
• are familiar with the fundamental regulations on work safety, accident prevention and protection of the environment
• and have been instructed in the safe handling of the plant (training course).
Before starting any mounting works, the plant owner/operating company designates
• a supervising person and ensures that
• the construction site is inspected using plans showing all supply lines (water, electricity, gas) and thus
• the position of all underground supply lines and unstable ground without sucient load-bearing capacities are marked
properly or sealed o with barriers.
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
Mounting instruction FS UNO with SRF Foundation Posts | 2016.09 V.004

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1.8. Additional documents relevant for the mounting
In addition to these Mounting Instructions, the following documents are required for the mounting of FS Uno:
2. Transportation, Loading and Unloading
2.1. Delivery of the components
The delivery of the components for FS Uno is carried out with an appropriate vehicle, for example
• trucks/lorries or
• overseas containers
2.2. Preparing the delivery
• Provide a stable and drivable surface for the delivery.
• Please make sure that all access roads, manoeuvring and unloading areas are suitable for trucks (up to 40 tons)
and can be used by forklift trucks and hoisting equipments.
• Please exclusively provide trained professionals for the loading and transportation activities.
WARNING
• Always wear protective equipment (safety shoes, hard hat, safety glasses, protective gloves and
reective vest) when unloading the FS Uno components.
• Besides also wear the personal protective equipment that is specied in your intra-company
regulations for the respective activity.
• It is compulsory to monitor and supervise the complete unloading process .
• Do not step under suspended loads!
• Please make sure that there are no unauthorized persons in the danger area.
• Pile-driving plan
• Blueprint drawing / general layout drawing
• Bill of materials / parts list
• Delivery note
• DIS unloading guidelines for transport in maritime containers
• General Terms and Conditions of Sale and Supply of Schletter GmbH
• Data sheet and instructions of the module manufacturer
Please observe all country-specic regulations and standards of the country of destination and its work
instructions!
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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2.3. Provide forklift trucks and hoisting equipment
• Organize suitable forklift trucks and hoisting equipment to be available at the moment of delivery.
• Choose the suitable forklift trucks and hoisting equipment in cooperation with the site manager in charge.
• Make sure that the components, pallets and long items can properly be unloaded.
• Provide forklifts and hoisting equipment with dierent fork intervals or with adjustable forks.
2.5. Storage of the components
We recommend to observe the following points on receiving the goods:
• Visual inspection of the delivered goods
• Check whether the supplied goods correspond to the delivery order
• Delivered quantity / comparison with packing lists and delivery note
• General condition of the goods
• Damages of the delivery
• Delivery documents
The following shipping documents need to be veried on delivery:
• Delivery note
• Packing list
Claims as to defects by the customer shall require that he has complied with his duties of examination and
notication of complaint contained in Sections377, 381 of the German Commercial Code [HGB]. Defects
discovered during incoming goods inspection or later shall be notied to Schletter GmbH in writing
without undue delay. A notication shall not be unduly delayed if it has been made within two weeks;
the timely dispatch of this notication shall be deemed sucient to meet the deadline. Regardless of the
obligation to inspect and notify, the customer shall notify Schletter of obvious defects (including delivery
of the wrong product or in not enough quantity) within two weeks of delivery in writing; the timely
dispatch of this notication shall also be deemed sucient in this case to meet the deadline. A general
right to return purchased goods is not granted.
Extract from the General Terms and Conditions of Sale and Supply of Schletter GmbH - download available at www.schletter.de/AGB_en
2.4. Check the scope of delivery (for completeness)
The components will also be delivered in cardboard boxes on pallets. And there also are fragile and sensitive items among
those components.
• Unload the items on rm and stable ground only.
• Protect all components against rain, snow, moisture and other weather conditions.
• Store the items in dry and well-ventilated storage buildings or tents.
• Never store components outdoors or covered by a plastic sheet only.
If you adhere to the hints above, you can prevent the goods from being damaged already before mounting.
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
Mounting instruction FS UNO with SRF Foundation Posts | 2016.09 V.004

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System description FS Uno - one-support ground mount system by Schletter
Material • Pile-driven foundation posts: Steel, hot-dip galvanized
• Proles (rails): Steel, strip-galvanized
• Fastening elements and screws: Steel, hot-dip galvanized or high-grade steel (fastening
device, bolts)
Structural dimensioning • Customized structural analysis of the respective terrain based upon a geological survey
• Individual system structural analysis based on local data
• Load assumptions according to DIN1055, part 4 (03/2006), part 5 (06/2005), part 100
(03/2001), Eurocode 1 (06/2002), DIN4113, DIN18800, Eurocode 9 and further resp.
corresponding national standards.
• Structural verication of all construction components based on FEM-calculation
Characteristics of the structure • Quick and easy assembly
• Highly ecient and material-saving rail geometries
• Available in individual parts or highly pre-assembled if desired
Delivery and services • Ground survey and structural analysis
• Site-specic structural analysis based on local data
• Ramming (pile-driving) of foundation posts and delivery of the complete mounting material
• Optional: Rack mounting
• Optional: Complete module assembly
Module types • Framed modules with a frame thickness of up to 50 mm
• Unframed modules on request
3. Technical data
3.1. System description and properties
3.2. Rack tolerances
FS Uno is always congured specically for the wind and snow loads at the respective installation site. In the interest of
economic eciency, usually the maximum load-bearing capacity of the individual component is exploited. To achieve this,
however, the racks must be mounted with the utmost precision. If there are signicant deviations from the mounting plans,
this can lead to structural overstress which in turn can lead to damage cases. Schletter GmbH will not assume any liability for
such damages nor for any consequences thereof. Adherence to the specied tolerances is therefore essential to the structural
safety of the rack.
Field span Lateral cantilever
Upper
girder connection
Lower
girder connection
Support width ± 150 mm
Lateral cantilever of purlins ± 100 mm
Lower girder connection ± 100 mm
Upper girder connection ± 100 mm
Clearance between module and clamp 0.5 to 2 mm
Fig. 3.2.-1 (eld span / support width)
Fig. 3.2.-2 (girder connections)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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



SRF foundation post
Girder assembly
Module-bearing rail
Components Connection elements / fasteners
Hexagon bolt M12x30 DIN933, ange nut M12 DIN6923
and washer M12 DIN9021

Fastening device
Module clamp adapter Drill screw





Fig. 3.3.-2 (detail)
3.3. Systems overview





Detail

Fig. 3.3-1 (system visualisation)
Detail


Strut assembly

Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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3.4. Components
3.4.1. Foundation posts
143006-200 Steel foundation post SRF6
143007-200 Steel foundation post SRF7
143008-200 Steel foundation post SRF8
3.4.2. Module-bearing rails and connection elements
144901-001 FS Uno / Duo purlin
144999-003 FS Uno / Duo fastening device
144999-008 FS Uno / Duo purlin connector Gen2 kit
Fig. 3.4.2.-1 (144999-008)
Fig. 3.4.2.-2 (144999-003)
Fig. 3.4.2.-3 (144901-001)
Fig. 3.4.1.-1 (143006-200)
3.4.3. Strut assembly
144970-099 Strut assembly SRF
000022-235 Strut element SRF
000016-673 FS steel locking plate
943612-030 Hexagon head bolt M12x30 DIN933 A2 GMB
943912-012 Flange nut M12 serrated DIN6923 A4
943921-012 Washer 12 DIN125 A2
Fig. 3.4.3.-1 (144970-099)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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3.4.4. Girder assemblies and components
144301-000 FS Uno girder assembly 1V custom cut
144302-200 FS Uno girder assembly 2V custom cut
144303-200 FS Uno girder assembly 3V custom cut
144304-200 FS Uno girder assembly 4V custom cut
144305-200 FS Uno girder assembly 5V custom cut
144306-200 FS Uno girder assembly 6V custom cut
144307-200 FS Uno girder assembly 7V custom cut
144308-200 FS Uno girder assembly 8V custom cut
144301-000 FS Uno girder assembly 1H custom cut
144302-100 FS Uno girder assembly 2H custom cut
144303-100 FS Uno girder assembly 3H custom cut
144304-100 FS Uno girder assembly 4H custom cut
144305-100 FS Uno girder assembly 5H custom cut
144306-100 FS Uno girder assembly 6H custom cut
144307-100 FS Uno girder assembly 7H custom cut
144308-100 FS Uno girder assembly 8H custom cut
144999-006 FS Uno / Duo fastening plate galvanized
943612-030 Hexagon head screw M12x30 DIN933 A2 GMB
943912-012 Flange nut M12 serrated DIN6923 A4
943922-012 Large washer M12 DIN9021 A2
Fig. 3.4.3.-1 (144302-200)
Fig. 3.4.3.-2 (144999-006)
Fig. 3.4.3.-3 (943612-030)
Fig. 3.4.3.-5 (943922-012)
Fig. 3.4.3.-4 (943912-012)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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3.4.5. Module clamps for vertical module mounting
Steel clamp Rapid clamp* Standard clamp*
Module
height
End clamp
left
Middle
clamp
End clamp
right
End clamp Middle
clamp
End clamp Middle
clamp
20 mm --- --- --- --- --- 130001-020 130002-000
24 mm --- --- --- --- --- 130001-024 130002-000
28 mm --- --- --- --- --- 130001-028 130002-000
30 mm 144912-030 144910-001 144911-030 131001-030 131002-000 130001-030 130002-000
31 mm 144912-031 144910-001 144911-031 131001-031 131002-000 130001-031 130002-001
32 mm 144912-032 144910-001 144911-032 131001-032 131002-000 130001-032 130002-001
33 mm 144912-033 144910-002 144911-033 131001-033 131002-000 --- ---
34 mm 144912-034 144910-002 144911-034 131001-034 131002-000 130001-034 130002-001
35 mm 144912-035 144910-002 144911-035 131001-035 131002-000 130001-035 130002-001
36 mm 144912-036 144910-002 144911-036 131001-036 131002-000 130001-036 130002-001
37 mm 144912-037 144910-002 144911-037 131001-037 131002-000 --- ---
38 mm 144912-038 144910-003 144911-038 131001-038 131002-000 130001-038 130002-001
39 mm 144912-039 144910-003 144911-039 131001-039 131002-000 --- ---
40 mm 144912-040 144910-003 144911-040 131001-040 131002-001 300001-040 130002-001
41 mm 144912-041 144910-003 144911-041 131001-041 131002-001 130001-041 130002-001
42 mm 144912-042 144910-003 144911-042 131001-042 131002-001 130001-042 130002-001
43 mm 144912-043 144910-004 144911-043 131001-043 131002-001 130001-043 130002-001
44 mm 144912-044 144910-004 144911-044 131001-044 131002-001 130001-044 130002-001
45 mm 144912-045 144910-004 144911-045 131004-045 131002-001 130001-045 130002-001
46 mm 144912-046 144910-004 144911-046 131001-046 131002-001 130001-046 130002-001
47 mm 144912-047 144910-004 144911-047 131001-047 131002-001 --- ---
48 mm 144912-048 144910-005 144911-048 131001-048 131002-001 130001-048 130002-001
49 mm 144912-049 144910-005 144911-049 131001-049 131002-001 --- ---
50 mm 144912-050 144910-005 144911-050 131001-050 131002-001 130001-050 130002-001
51 mm --- --- --- --- --- 130001-051 130002-001
* in combination with module clamp adapter
Fig. 3.4.4.-1 (144912-030) Fig. 3.4.4.-2 (131001-030) Fig. 3.4.4.-3 (130001-030)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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3.4.6. Module clamps for horizontal module mounting
Rapid clamp* Standard clamp*
Module height End clamp Middle clamp End clamp Middle clamp
20 mm --- --- 130001-020 130002-000
24 mm --- --- 130001-024 130002-000
28 mm --- --- 130001-028 130002-000
30 mm 131001-030 131002-000 130001-030 130002-000
31 mm 131001-031 131002-000 130001-031 130002-001
32 mm 131001-032 131002-000 130001-032 130002-001
33 mm 131001-033 131002-000 --- ---
34 mm 131001-034 131002-000 130001-034 130002-001
35 mm 131001-035 131002-000 130001-035 130002-001
36 mm 131001-036 131002-000 130001-036 130002-001
37 mm 131001-037 131002-000 --- ---
38 mm 131001-038 131002-000 130001-038 130002-001
39 mm 131001-039 131002-000 --- ---
40 mm 131001-040 131002-001 300001-040 130002-001
41 mm 131001-041 131002-001 130001-041 130002-001
42 mm 131001-042 131002-001 130001-042 130002-001
43 mm 131001-043 131002-001 130001-043 130002-001
44 mm 131001-044 131002-001 130001-044 130002-001
45 mm 131004-045 131002-001 130001-045 130002-001
46 mm 131001-046 131002-001 130001-046 130002-001
47 mm 131001-047 131002-001 --- ---
48 mm 131001-048 131002-001 130001-048 130002-001
49 mm 131001-049 131002-001 --- ---
50 mm 131001-050 131002-001 130001-050 130002-001
51 mm --- --- 130001-051 130002-001
* in combination with module clamp adapter
3.4.7. Module clamp adapter and connection elements for module clamps
144919-050 FS Steel Module clamp adapter KIT
129010-008 KlickIn click component for nut M8
943914-008 Square nut M8 DIN557 A4
Fig. 3.4.6.-1 (144919-050)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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3.4.8. Screws for standard module clamps
Frame height
in mm
Hexagon socket
screw in mm Name
943308-125 20 25 Hexagon socket screw M8x25 serrated DIN912 A3
943308-130 24 30 Hexagon socket screw M8x30 serrated DIN912 A3
943308-135 28 - 30 35 Hexagon socket screw M8x35 serrated DIN912 A3
943308-120 31 - 35 20 Hexagon socket screw M8x20 serrated DIN912 A3
943308-125 36 - 40 25 Hexagon socket screw M8x25 serrated DIN912 A3
943308-130 41 - 45 30 Hexagon socket screw M8x30 serrated DIN912 A3
943308-135 46 - 51 35 Hexagon socket screw M8x35 serrated DIN912 A3
The nuts and bolts of the Standard clamps are not included in the scope of delivery and must be ordered separately.
With big order quantities, clamps for other module thicknesses can be manufactured on request!
The Standard clamps are not pre-assembled when they are delivered. These clamps are combined with a hexagon socket
head screw, a KlickIn click component and a square nut. The screws listed below can be used for that purpose:
3.4.9. Auxiliary equipment / accessories
964000-176 Paint zinc dust silver gray satin-gloss
149023-001 Cable fastening retainer 1.0-3.0mm, guidance at the top
149023-002 Cable fastening retainer 1.0-3.0mm, guidance at the side
149023-003 Cable fastening retainer 3.0 - 6.0 mm
144999-009 FS Uno / Duo cable fastener purlin
144999-010 Empty cable conduit
Fig. 3.4.8.-4 (149023-001)
Fig. 3.4.8.-1 (144999-009)
Fig. 3.4.8.-3 (149023-002)
Fig. 3.4.8.-2 (149023-003)
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4. Mounting information
4.1. Terrain
When planning the ground-mounted system, make sure that the ground slope is within the tolerances. In the following, the
guiding values for a structurally safe solar plant are specied.
Inclination North - South
Inclination East - West
Maximum admissible ground slope
East-West: 3°
Regarding the structural calculations, additional measures
may be required (for example reinforcements)
Maximum admissible ground slope
North-South: 35°
(depending on the condition of the slope, soil composi-
tion, rocks, etc.)
200 mm 100 mm
100 mm
The FS Uno system is customized for the respective installation site. The following indications are already needed during the
planning process:
• Site boundaries
• Rights of way / easements (the building site must be accessible for vehicles at any time)
• Obstacles in the subsoil (pipes, subterranean cables, etc.)
• Weather conditions (wind, rain, snow, etc.)
• Conditions that may inuence the building ground (seismic activities, erosion, etc.)
• Geo-technical reports about the topology of the site and the composition of the soil
When mounting the ground-mount system, we recommend:
• Keeping a clearly laid out and detailed daily construction report (site journal), where all daily work steps, employment of
sta and assembled components are exactly specied.
• Accurately checking and comparing the delivery notes with the delivered goods on the site.
The Schletter ground mount plants
within one rack are always parallel to
the terrain topography beneath them.
Height dierences of the subsoil
under a rack can be equalized with
the foundation posts. Please already
align the piles with a cord when
pile-driving. The tolerance of the
anchoring depth is ±100 mm.
Fig. 4.1.-1 (ground slope)
Fig. 4.1.-2 (tolerances of the anchoring depth)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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4.2. Foundation
Pile-driving
(ramming)
depth
Inclination
(East-West)
Inclination
(North-South)
+ 100 mm + 3° + 3°
Twist Height dierences of
the foundations posts
within one row
+ 30 mm+ 5°
4.2.1. Ramming (pile-driving) tolerances
4.2.2. Pile-driving obstacles and concreting
Pile-driving operations must be undertaken by specialist companies. Special pile-driving plans are created on the basis of a
digital terrain model with exactly specied contour lines. These plans must be available at least one week before the start of
the pile-driving operations and must include the positions of the foundation posts and their corresponding dimensions. The
position of the rst and last pile in each row must be marked on the terrain with a wooden stake. If a row length exceeds 50
meters, additional markings (wooden stakes) must be used within the row.
Extraordinary foundation posts must be clearly identied and documented in a pile-driving plan. Inconsistencies during
the pile-driving procedure which could aect the adhesive force of the piles must be documented, (e.g. slant position,
deceleration and subsequent, sudden acceleration of the penetration speed, swift penetration of the foundation pile while
pile-driving etc.). All pile-driving procedures deviating from the specications as to the ramming of the foundation posts
must be approved by Schletter GmbH.
If pile-driving operations are impeded by unexpected obstacles (blocks, solid rock on the site), the following procedure must
be implemented:
1. Pre-drill down to the intended target depth.
2. If possible, vacuum the drill cuttings out of the borehole. Otherwise, the drill cuttings that remain in the borehole have
to be compacted.
3. The borehole must be lled in layers with compressed concrete of strength C16/20 and compacted.
4. After that, ram (pile-drive) the pile without delay.
Fig 4.2.1.-1 (pile-driving tolerances - depth) Fig 4.2.1.-2 (pile-driving tolerances - E/W tilt) Fig 4.2.1.-3 (pile-driving tolerances - N/S tilt)
Fig 4.2.1.-4 (pile-driving tolerances - twist / distortion) Fig 4.2.1.-5 (pile-driving tolerances - dierence in height)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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4.3. Tools
In the following, the tools that are usually required for the mounting of FS Uno are listed. Additional tools that are required
for special cases (for example encasing the foundation posts in concrete) are not listed here.
4.3.1. Dening the positions of the foundation posts and marking these positions (staking)
4.3.2. Pile-driving (ramming)
4.3.3. Rack mounting
• Measuring tapes (100 m)
• Line pins (about 20 pieces)
• Mason's lacing cord
• Club hammer
• Wooden stakes
• Color spray (for ground marking etc.)
• Permanent marker
• Zinc dust primer
• Brush
• Pile-driver with suitable ram
• Spirit level
• Torque wrench (30 Nm to 60 Nm)
• Wrench socket size 17
• Wrench socket size 19
• Hammer
• Club hammer (to hold against the connector hook)
• Plastic tip hammer
• Angle meter (goniometer) - spirit level
• Mason's lacing cord
• Cordless screw driver
We recommend using torque wrenches for all bolted connections. With fast rotary motions,
there is an increased danger of "bolt blocking"!
NOTICE
Please exclusively use the tools recommended for the assembly of FS Uno.
If you use tools that are not intended for this purpose, the rack can be damaged and the structural safety of
the plant could thus be endangered!
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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4.3.4. Module mounting
• Mason's lacing cord
• Measuring tape
• Possibly distance template for distances between the modules
• Cordless screw driver
• Size 8 socket for cordless screwdriver
• Size 6 hexagon socket wrench / 40TX key
• Torque wrench (< 8 Nm)
• Size 6 hexagon socket wrench / 40TX bit for torque wrench
4.4. Torque specications
4.4.1. Bolted connections in the substructure
Name Tightening torque (MA-Nm)
Hexagon head bolt DIN933 M12x30
A2 GMB
Hexagon nut DIN6923 M12 A4
Washer, large DIN9021 M12 A2
56 Nm
4.4.2. Fastening of the module clamps
Name Tightening
torque (MA-Nm)
Module
arrangement
Hexagon socket screw DIN4762 M8
(20 - 35 mm)
KlickIn click component for nut M8
Square nut DIN557 M8 A4
15 Nm H and V in com-
bination with
module clamp
adapter
Hexagon socket screw DIN912
M8 A2 (25 - 45 mm)
8 Nm V
TX stud screw M8 A2 GMB
(42.5 - 55 mm)
15 Nm H and V in com-
bination with
module clamp
adapter
Always fasten the bolted connection by turning the bolt head! When checking
the pre-stress of the bolts, it has to be considered that constraints and frictional
forces can lead to a loss of clamping force. This was taken into consideration when
the tightening torques were determined. When a bolted connection is checked, it
must not loosen when 50% of the specied tightening torque is applied.
Fig. 4.4.1.-1 (screw connection M12)
Fig. 4.4.2.-1 (Standard module clamp)
Fig. 4.4.2.-2 (steel module clamp)
Fig. 4.4.2.-2 (Rapid 2+ module clamp)
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
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5. Assembly steps
5.1. Pile-driving of foundation posts and applying corrosion protection
A zinc dust primer is to be used
to coat the top 30 mm of the
foundation post, inside and
outside.
Fig. 5.1.-1 (pile-driving tolerances) Fig. 5.1.-2 (prime-coated foundation post)
1.
Pile-drive the foundation post
according to the indicated
tolerances
Height tolerance of the piles to
each other: ± 30 mm
Tolerance of pile tilt in N-S and
E-W direction: ± 3°
Tolerance of the pile height
according to terrain topography:
± 100 mm
1.
2.
2.
WARNING
• Wear adequate protective equipment during the pile-driving operations, especially ear protection
and protective gloves, reective vest and safety shoes!
• Always keep looking on the machine and the surrounding area.
• Please especially pay attention to mechanically moving parts in the danger area of the ramming
machine to avoid crushing injuries.
• Prevent the ramming machine from toppling over by exclusively driving on adequate, stable ground!
Check the stability and rm embedment of the pile-driven foundations before mounting the racks!
Only a special paint (zinc dust primer) will give the required protection and is approved according to the
standards. Basic zinc spray coatings do not provide long-term protection.
The tolerances specied here must not be exceeded!
The exact positions of the foundation posts can be referenced in the corresponding pile-driving plan.
Schletter Solar GmbH – Alustraße 1 – 83527 Kirchdorf
Mounting instruction FS UNO with SRF Foundation Posts | 2016.09 V.004