Schletter PvMax3 User manual

PvMax3
Mounting Instructions
Schletter GmbH
Gewerbegebiet an der B15
Alustrasse 1
83527 Kirchdorf / Haag in OB
GERMANY
Phone: [phone] - 0
E-mail: [e-mail]
Your contact:
Technical advice for ground-mounted
solar plants
Phone: [phone] - 203
E-mail: tb-frei[e-mail]

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
2/35

©Schletter GmbH as of 10/2016
3/35
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 Information..................................................................................................................................................................................5
1.5. Obligation of the Plant Owner / Operating Company...............................................................................................................7
1.6. Commitment of the Personnel...........................................................................................................................................................7
1.7. Training of the Personnel .....................................................................................................................................................................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 ................................................................................................................................................................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. Strut assembly ......................................................................................................................................................................... 12
3.4.2. Components of the strut assembly.................................................................................................................................. 12
3.4.3. Girder assemblies ................................................................................................................................................................... 12
3.4.3. Girder assemblies ................................................................................................................................................................... 13
3.4.3. Girder assemblies ................................................................................................................................................................... 14
3.4.4. Module-bearing rails............................................................................................................................................................. 14
3.4.5. Purlin connector .................................................................................................................................................................... 15
3.4.6. Auxiliary equipment / accessories.................................................................................................................................... 15
3.4.7. Module clamping ................................................................................................................................................................... 16
3.4.8. Screws for Standard module clamps............................................................................................................................... 17
4. Mounting information............................................................................................................................................................18
4.1. Terrain....................................................................................................................................................................................................... 18
4.2. Foundation ............................................................................................................................................................................................. 19
4.2.1. Pre-cast strip foundations .................................................................................................................................................... 19
4.2.2. Dimensioning and reinforcement..................................................................................................................................... 19
4.2.3. Preparation of the soil and positioning of the foundations..................................................................................... 19
4.3. Tolerances regarding inclination and distortion (twist)......................................................................................................... 21
4.4. Tools .......................................................................................................................................................................................................... 22
4.4.1. Surveying, staking and aligning the foundations....................................................................................................... 22
4.4.2. Rack mounting ........................................................................................................................................................................ 22
4.4.4. Module mounting .................................................................................................................................................................. 23
4.5. Torque specications .......................................................................................................................................................................... 23
4.5.1. Bolted connections in the substructure......................................................................................................................... 23
4.5.2. Fastening of the module clamps ...................................................................................................................................... 24
5. Assembly steps ........................................................................................................................................................................25
5.1. Providing the concrete foundations and mounting the strut assembly......................................................................... 25
5.2. Mounting the girder assembly....................................................................................................................................................... 27
5.3. Mounting the module-bearing rails............................................................................................................................................. 28
5.4. Mounting the purlin connectors (optional) .............................................................................................................................. 29
6. Module mounting and module clamping ..........................................................................................................................30
6.1. Module mounting in case of horizontal (landscape) or vertical (portrait) module bearing..................................... 31
6.2. Module mounting and clamping in case of combined module bearing ........................................................................ 32
7. Disassembly and disposal......................................................................................................................................................33
8. Maintenance and care ............................................................................................................................................................34
9. Warranty and liability .............................................................................................................................................................34

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
4/35
1. General Information
1.1. Short Description
PvMax3 is a modular unit assembly system for the installation of ground-mount substructures in high-quality and ecient
aluminum design. As the individual components have been optimized and structurally synchronized, a minimum system
price is achieved. PvMax3 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
PvMax3 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, propagation, transfer to third parties - also in excerpts - and any kind of utilization beyond the
limits of the copyright law must be approved in writing by Schletter GmbH.
Schletter GmbH 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 a product or consequential 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 GmbH has made considerable eorts to make sure that these Mounting Instructions are free of
errors and omissions.
Schletter GmbH takes no responsibility respectively liability for faults that may be part of these Mounting
Instructions for example for direct or consequential damage that arise from placing these Mounting
Instructions at your disposal.

©Schletter GmbH as of 10/2016
5/35
1.4. Safety Information
Please read these Mounting Instructions carefully before starting the assembly and keep it in a safe place for further
reference. Please observe and abide by 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 serious personal injury will result, if proper safety precautions are not taken.
WARNING
indicates that death or serious personal injury can result, if proper safety precautions are not taken.
CAUTION
indicates that minor personal injury may result, if proper safety precautions are not taken.
DANGER
due to operations with electricity. Electric power can lead to serious accidents and can cause serious
injuries. Appropriate safety precautions are to be taken by all means.
Securing 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 GmbH as of 10/2016
PvMax3 Mounting Instructions
6/35
We absolutely recommend to observe the following protective measures when mounting PvMax3:
Always wear ear protection
when carrying out noisy work
Remember to wear high-
visibility 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 com-
ponents
Wear respiratory protection
when carrying out dusty work
Wear safety glasses when
carrying out grinding and cutting
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 GmbH as of 10/2016
7/35
1.6. Commitment of the Personnel
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 PvMax3 must have read and understood these Mounting Instructions,
especially chapter "1.4.
Safety Information", 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 and certied personnel are allowed to execute the operations mentioned in this
instruction manual.
• Personnel that still is to be trained may only mount the PvMax3 system under the supervision of an experienced person.
1.7. Training of the Personnel
These Mounting Instructions are addressed to certied personnel qualied in the areas of transportation and loading,
mounting, disassembly and disposal, having the following qualications:
• The certied professionals 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
knowledge of the relevant regulations.
• The certi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 certied professionals 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 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 GmbH as of 10/2016
PvMax3 Mounting Instructions
8/35
1.8. Additional Documents Relevant for the Mounting
In addition to these Mounting Instructions, the following documents are required for the mounting of PvMax3:
2. Transportation, Loading and Unloading
2.1. Delivery of the components
The delivery of the components for PvMax3 is carried out with an appropriate vehicle, for example
• truck/lorry or
• overseas container.
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.
• Ensure that loading/unloading and transport activities are carried out by trained and certied personnel only.
WARNING
• Always wear protective equipment (safety shoes, hard hat, safety glasses, protective gloves and high-
visibility vest) when unloading the components of the PvMax3 system.
• 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.
• Reinforcement plan (optional)
• 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 GmbH as of 10/2016
9/35
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 when 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 lists
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
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 GmbH as of 10/2016
PvMax3 Mounting Instructions
10/35
System description PvMax3 - unit assembly system for ground-mounted solar plants
Material • Module bearing rails: Aluminium, special rails of the S series
• Girders: Aluminium, special rails of the BF series
• Supports: Aluminium, RHP proles
• Bolts, nuts: A2-70, A4-80
Structural dimensioning • According to the current national standards (in Germany: DIN 1055, EC 1).
• System structural analysis with data on foundation dimensioning and screw anchor
recommendation based on the wind and snow loads that have to be considered
Characteristics of the structure • Quick and easy assembly
• Pre-assembled support structure
• Wide spans, which reduce the number of required supports and foundations
Foundation • Concrete (The structural analysis of the system features specications on reinforce-
ment and dimensioning)
Module clamping • Framed and unframed modules
• Combined module clamping possible
• with standard clamps or Rapid2+ clamps
• Grounding clamps
3. Technical data
3.1. System description and properties
3.2. Rack tolerances
PvMax3 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 / support width 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 GmbH as of 10/2016
11/35




Concrete foundation
Strut assembly
Girder assembly
Components Connection elements / fasteners
Hexagon head screw M10x25 DIN933, square nut M10, KlickIn click
component for square nut M10


Module-bearing rail
3.3. Systems overview


Detail A
Fig. 3.3-1 (system visualisation)
PvMax3 base bracket
Detail B
Detail C
Detail A Detail B Detail C
Hexagon head screw M12x80 DIN931 and ange nut M12
Hexagon head screw M12x100 DIN931, ange nut M12 and base clamp
Mounting clamp





Fig. 3.3.-2. (detail A) Fig. 3.3.-3. (detail B) Fig. 3.3.-4. (detail C)
Girder to strut connector front
Girder to strut connector rear













©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
12/35
3.4. Components
3.4.1. Strut assembly
147007-001 PvMax3 strut assembly V55-D55-H55
147007-002 PvMax3 strut assembly V75-D75-H75
147007-003 PvMax3 strut assembly V55-D75-H75
147007-004 PvMax3 strut assembly V55-D75-H55 / V55-D55-H75
3.4.3. Girder assemblies
146510-000 Girder assembly FS1H-BF0
146511-000 Girder assembly FS1H-BF1
146512-000 Girder assembly FS1H-BF2
146513-000 Girder assembly FS1H-BF3
146520-000 Girder assembly FS2H-BF0
146521-000 Girder assembly FS2H-BF1
146522-000 Girder assembly FS2H-BF2
146523-000 Girder assembly FS2H-BF3
Fig. 3.4.1.-1 (147007-002)
Fig. 3.4.3.-1 (146530-000)
3.4.2. Components of the strut assembly
000011-126 PvMax3 Strut 55x55 front custom cut
000011-127 PvMax3 Strut 55x55 diag. custom cut
000011-128 PvMax3 Strut 55x55 rear custom cut
000011-129 PvMax3 Strut 75x55 front custom cut
000011-130 PvMax3 Strut 75x55 diag. custom cut
000011-131 PvMax3 Strut 75x55 rear custom cut
147004-001 PvMax3 front base bracket
147004-002 PvMax3 rear base bracket
147004-001 PvMax3 girder to strut connector front
147004-002 PvMax3 girder to strut connector rear
147005-000 PvMax3 base clamp
Fig. 3.4.2.-1 (147004-001)
Fig. 3.4.2.-2 (147004-002)

©Schletter GmbH as of 10/2016
13/35
3.4.3. Girder assemblies
146530-000 Girder assembly FS3H-BF0
146531-000 Girder assembly FS3H-BF1
146532-000 Girder assembly FS3H-BF2
146533-000 Girder assembly FS3H-BF3
146540-000 Girder assembly FS4H-BF0
146541-000 Girder assembly FS4H-BF1
146542-000 Girder assembly FS4H-BF2
146543-000 Girder assembly FS4H-BF3
146550-000 Girder assembly FS5H-BF0
146551-000 Girder assembly FS5H-BF1
146552-000 Girder assembly FS5H-BF2
146553-000 Girder assembly FS5H-BF3
146560-000 Girder assembly FS6H-BF0
145561-000 Girder assembly FS6H-BF1
145562-000 Girder assembly FS6H-BF2
146563-000 Girder assembly FS6H-BF3
146110-000 Girder assembly FS1V-BF0
146111-000 Girder assembly FS1V-BF1
146112-000 Girder assembly FS1V-BF2
146113-000 Girder assembly FS1V-BF3
146120-000 Girder assembly FS2V-BF0
146121-000 Girder assembly FS2V-BF1
146122-000 Girder assembly FS2V-BF2
146123-000 Girder assembly FS2V-BF3
146130-000 Girder assembly FS3V-BF0
146131-000 Girder assembly FS3V-BF1
146132-000 Girder assembly FS3V-BF2
146133-000 Girder assembly FS3V-BF3
146140-000 Girder assembly FS4V-BF0

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
14/35
3.4.3. Girder assemblies
146133-000 Girder assembly FS3V-BF3
146140-000 Girder assembly FS4V-BF0
146141-000 Girder assembly FS4V-BF1
146142-000 Girder assembly FS4V-BF2
146143-000 Girder assembly FS4V-BF3
146150-000 Girder assembly FS5V-BF0
146151-000 Girder assembly FS5V-BF1
146152-000 Girder assembly FS5V-BF2
146153-000 Girder assembly FS5V-BF3
146160-000 Girder assembly FS6V-BF0
146161-000 Girder assembly FS6V-BF1
146162-000 Girder assembly FS6V-BF2
146163-000 Girder assembly FS6V-BF3
3.4.4. Module-bearing rails
124300-001 Module-bearing rail S0 - custom cut
124301-001 Module-bearing rail S1 ext. - custom cut
124302-001 Module-bearing rail S1 int. - custom cut
124303-001 Module-bearing rail S1.5 - custom cut
124307-001 Module-bearing rail S1.8 - custom cut
124304-001 Module-bearing rail S2 - custom cut
124305-001 Module-bearing rail S3 - custom cut
124306-001 Module-bearing rail S4 - custom cut
Fig. 3.4.4.-1 (124300-001)

©Schletter GmbH as of 10/2016
15/35
3.4.5. Purlin connector
129300-000 Connector for module-bearing rail S0 kit
129301-000 Connector for module-bearing rail S1 kit
129303-000 Connector for module-bearing rail S1.5 kit
129306-000 Connector for module-bearing rail S1.8 kit
129304-000 Connector for module-bearing rail S2 kit
129305-000 Connector for module-bearing rail S3 kit
129307-000 Connector for module-bearing rail S4 kit
Fig. 3.4.5.-1 (129300-000)
Fig. 3.4.5.-2 (129600-000)
3.4.6. Auxiliary equipment / accessories
964000-176 Paint zinc dust silver gray satin-gloss
943755-925 Screw 5.5x25 self-tapping JT3-6 A2
119015-000 Punched mounting tape 12x0.8 hole 5.2mm - 50m
135005-000 Grounding connector kit
149100-900 Grounding pin kit variable
149100-000 Grounding pin kit
128014-000 Interior cable duct pre-assembled custom cut
128014-001 Exterior cable duct left, pre-assembled custom cut
128014-002 Exterior cable duct right, pre-assembled custom cut
129012-010 Proklip2000-B cable clip round duct M10
129012-002 Proklip2000-P round cable clip for the S design
129065-008 Proklip-Multi8
129065-010 Proklip-Multi10
129042-001 Proklip-F
129012-008 Proklip-S rectangular cable clip for M8 channel
129012-001 Proklip-Q
Fig. 3.4.6.-1 (943755-925)
Fig. 3.4.6.-2 (129012-010)
Fig. 3.4.6.-3 (129065-008)
Fig. 3.4.6.-4 (129012-001)

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
16/35
3.4.7. Module clamping
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
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:

©Schletter GmbH as of 10/2016
17/35
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

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
18/35
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: 10°
Regarding the structural calculations, additional measures
may be required (for example reinforcements)
Maximum admissible ground slope
North-South: 10°
(depending on the condition of the slope, soil
composition, rocks, etc.)
Installations on steeper slopes are only possible if special
measures such as anchoring or excavations of the terrain
are taken!
The PvMax3 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.)
• Geotechnical 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
personnel and assembled components are exactly specied.
• Accurately checking and comparing the delivery notes with the delivered goods on the site.
Fig. 4.1.-1 (ground slope)

©Schletter GmbH as of 10/2016
19/35
Before setting up the PvMax3 system, the terrain must be prepared for the positioning of the concrete foundations.
Please consider that individual sub-racks that are part of one rack are not parallel to the subsoil beneath them. Thus, the
foundations have to aligned correctly. This alignment must be maintained for all the racks in order to avoid "terracing" that
would lead to shades on individual racks.
4.2. Foundation
4.2.1. Pre-cast strip foundations
4.2.2. Dimensioning and reinforcement
PvMax3 can basically be combined with all kinds of concrete foundations!
Ground-mounted solar plants are often built on re-vegetated landll sites or agricultural terrains of low quality with bad
subsoil conditions. In such cases a foundation using posts at frost penetration depth mostly is not possible or not reasonable.
Thus, a foundation on concrete blocks made of pre-cast concrete or cast-in-place concrete is recommended as a standard
option. This kind of foundation is virtually always possible and very easy to carry out.
Other types of foundation on request!
Whether or not the subsoil is suitable for a certain type of foundation generally has to be determined on site in each case.
As a standard, strip foundations are put under the supports (continuous strips parallel to the module rows are also possible).
The weight of the foundations has to be dimensioned in such a manner that the wind loads are compensated by the
foundation weight only (see structural analysis).
The dimensioning of the foundations is carried out according to the structural analysis (by all means do specify the load
parameters - especially the wind loads!)
The foundations have to be reinforced by the concrete builder according to the loads that have to be considered.
4.2.3. Preparation of the soil and positioning of the foundations
WARNING
• Only use construction machines and site vehicles that comply with local safety requirements and
which ensure protection of health and safety when used as intended.
• Secure the work area by taking appropriate measures and make sure that there are no unauthorized
persons in the work area of the construction machines.
• See to it that persons who are performing earthworks are protected by personal protective
equipment (PPE), such as high-visibility vest, safety shoes and hard hat).

©Schletter GmbH as of 10/2016
PvMax3 Mounting Instructions
20/35
Cast-in-place
concrete
Casting
mold
NOTICE
If the terrain structure is too uneven, soil has to be removed and the terrain has to be graded, if necessary.
NOTICE
The concrete foundations must be aligned ush on a gravel bed. The rack can only be installed properly, if all
foundations are correctly aligned and at the same level.
Maximum height tolerance within the foundations: ± 30 mm.
NOTICE
Also when using a cast-in-place foundation, make sure that the foundations are cast up to the same height.
Fig. 4.2.3.-1 (removing soil and grading the terrain structure)
Fig. 4.2.3.-2 (aligning the concrete foundations on a gravel bed)
Fig. 4.2.3.-3 (ush height cast-in-place foundation)