OBO Bettermann SLM50 User manual

Mounting
instructions
SLM50 suspended rising sections for the maintenance of electrical function
to DIN 4102 Part 12

© 2021 OBO Bettermann Holding GmbH & Co. KG
SLM50 suspended rising sections for the maintenance of electrical function
Mounting instructions

3 | EN
SLM50 suspended vertical ladders with maintenance of electrical function
Table of contents
Table of contents
1 About these instructions . . . . . . . . . . . . . . . . . . . . . 5
1.1 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Relevance of these instructions . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Types of warning information . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Basic standards and regulations . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Applicable documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.1 General safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Personal protective equipment . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Necessary tools . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 System description . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1.1 Mounting variant 1: Direct mounting with head plate . . . . . . . . . . . . . . . . . . . 9
5.1.2 Mounting variant 2: Direct mounting with bracket . . . . . . . . . . . . . . . . . . . . . 9
5.1.3 Mounting variant 3: Mounting on transverse profile with head plate . . . . . . . . . . . . 9
5.1.4 Mounting variant 4: Mounting on lengthwise profile with head plate . . . . . . . . . . . 9
5.2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Preparations for mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 Mounting vertical ladders up to a max. storey height of 3.5 m . . . . . . . . . 11
6.2.1 Mounting the ladder rails with head plates . . . . . . . . . . . . . . . . . . . . . . . 11
6.2.2 Mounting the ladder rails with a mounting bracket . . . . . . . . . . . . . . . . . . . 13
6.2.3 Mounting the ladder rails with transverse profiles . . . . . . . . . . . . . . . . . . . . 15
6.2.4 Mounting the ladder rails with lengthwise profiles . . . . . . . . . . . . . . . . . . . . 18
6.3 Mounting vertical ladders up to a max. storey height of 7.0 m . . . . . . . . . 21
6.3.1 Mounting the ladder rails with head plates . . . . . . . . . . . . . . . . . . . . . . . 21
6.3.2 Mounting the ladder rails with transverse profiles . . . . . . . . . . . . . . . . . . . . 23
6.3.3 Mounting the ladder rails with lengthwise profiles . . . . . . . . . . . . . . . . . . . . 26
6.4 Mounting ladder rungs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.5 Mounting U support connectors . . . . . . . . . . . . . . . . . . . . . . . . .30
6.6 Fastening cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.7 Attaching the identification plate . . . . . . . . . . . . . . . . . . . . . . . .31
7 Additional required measures . . . . . . . . . . . . . . . . . 32
7.1 Closing ceiling openings with insulation . . . . . . . . . . . . . . . . . . . .32
7.2 Mounting the strain relief . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
8 Retrofitting . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9 Checking and maintaining the system . . . . . . . . . . . . 34
10 Dismantling the system . . . . . . . . . . . . . . . . . . . . 34
11 Disposing of the system . . . . . . . . . . . . . . . . . . . . 34
12 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4 | EN OBO Bettermann
Table of contents

5 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
About these instructions
1 About these instructions
1.1 Target group
These instructions are intended for specialists and/or instructed technical
personnel (e.g. engineers, architects, heads of construction, and mount-
ing and installation engineers) who have had fire protection training and
are charged with the planning or installation of suspended vertical lad-
ders for the maintenance of electrical function.
1.2 Relevance of these instructions
These instructions are based on the standards valid at the time of compil-
ation (02/2021).
Follow these instructions to ensure correct and safe use.
Any images are intended merely as examples. Mounting results may look
different.
In these instructions, cables and lines are referred to simply as cables.
Add the mounting instructions for construction acceptance after mount-
ing to the construction file.
1.3 Types of warning information
Type of risk!
Shows a risky situation. If the safety instruction is not observed, then
serious or fatal injuries may occur.
Type of risk!
Shows a risky situation. If the safety instruction is not observed, then
medium or minor injuries may occur.
Note! Indicates important information or assistance.
1.4 Basic standards and regulations
– Standard support structure to DIN 4102 Part 12
1.5 Applicable documents
– Surveyor's report no. GS 3.2/17-436-4-r1 (MFPA Leipzig) for standard
support structure according to DIN 4102 Part 12 for cable routing on
suspended rising sections
– Surveyor's report no. GA-2020/044 (IBB) for standard support struc-
ture according to DIN 4102 Part 12 for cable routing on suspended
rising sections
– General construction test certificates of the cable manufacturers
Installation
mechanical expertise
WARNING
CAUTION

6 | EN OBO Bettermann
Correct use
2 Correct use
The rising section standard support structure, type SLM50C40F, is suit-
able for suspended mounting under the ceiling and is used for vertical
support and routing of cables for the maintenance of electrical function
(E30–E90). The following mounting parameters must be maintained:
– Suspension height max. 3.5 or 7 m
– Width of the vertical cable ladder max. 600 mm
– Cable load per vertical ladder max. 20 kg/m
– Cable bundling, heavy current cables, max. quantity 3, max. diameter
25 mm
– Cable bundling, installation cables, quantity not limited, total cable
weight max. 3.0 kg/m
3 Safety
3.1 General safety information
Observe the following general safety information:
–All the appropriate regulations and technical regulations of other units,
in particular those for electrical engineering, must be complied with.
– Risk of cutting from plate edges.
– The rising section should be included in the protection measures and/
or the equipotential bonding.
– The inclusion in the equipotential bonding of the overall system must
be performed by specialist personnel.
3.2 Personal protective equipment
List of personal protective equipment to be used:
Use hand protection
Wear safety shoes
Wear eye protection
Wear head protection

7 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Necessary tools
4 Necessary tools
List of required tools:
– Angle grinder
– Drill
– Linear laser; spirit level
– Wrench set
– Ladder
– Roller scaffolding or work platform
5 System description
The SML50C40F.. vertical ladders, with a max. width of 600 mm, can be
used as standard support structures in the mounting variants, according
to the surveyors' reports, as suspended rising sections for the mainten-
ance of electrical function (E30–E90).
The suspended mounting of the vertical ladder can be performed regard-
less of the structure or type and of the distance to the wall. For this, the
vertical ladders are mounted flush to solid ceiling structures. Depending
on the mounting version, the maximum storey height may not exceed
3.5 m or 7.0 m.
Fig. 1: Overview, mounting variants
No. Mounting variant Suitable for storey heights
≤ 3.5 m > 3.5 m – ≤ 7.0 m
Direct ceiling mounting with head plates
Direct ceiling mounting with mounting angles —
Mounting in a direct run below the ceiling opening with
transverse profiles
Mounting in a direct run below the ceiling opening with
lengthwise profiles
Tab. 1: Overview, mounting variants

8 | EN OBO Bettermann
System description
5.1 System overview
Fig. 2:
2
1
5
6
3
4
8
11 10 9
7
Overview of system components
1 SLM50 C... F vertical ladder
2 KUS 5 NOK head plate
3
GMS 3 VW 90 mounting bracket
4
KUS 5 head plate
5
US7 U support
6
M12 threaded rod
7
M12 anchor, fire protection-tested
(e.g. bolt tie BZ12-15-35/110)
8
M12 truss-head bolt (with washer and nut)
9
M10 truss-head bolt (with washer and nut)
10 M12 hexagonal nut
11
M12 washer
Note! The SML50 C... F vertical ladder
1
is required for all mounting variants
and is 3 m long. The quantity of vertical ladders required per storey is
dependent on the appropriate storey height. For storey heights > 3 m,
2 VUS 5 U support connectors are required for each additional vertical
ladder.

9 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
System description
5.1.1 Mounting variant 1: Direct mounting with head plate
No. Designation Quantity/storey at
≤ 3.5 m > 3.5 m – ≤ 7.0 m
2
KUS 5 NOK head plate 4 4
9
M10 truss-head bolt 2 4
7
M12 anchor 4 4
Tab. 2: System components, variant 1
5.1.2 Mounting variant 2: Direct mounting with bracket
No. Designation Quantity/storey at
≤ 3.5 m —
3GMS 3 VW 90 mounting
bracket
4—
9
M10 truss-head bolt 2 —
7
M12 anchor 4 —
Tab. 3: System components, variant 2
5.1.3 Mounting variant 3: Mounting on transverse profile with head plate
No. Designation Quantity/storey at
≤ 3.5 m > 3.5 m – ≤ 7.0 m
2KUS 5 NOK head plate 6 6
5
US7 U support 3 / 2* 3 / 2*
9M10 truss-head bolt 2 4
7
M12 anchor 6 6
8M12 truss-head bolt 4 4
6
M12 threaded rod 2 4
10 M12 hexagonal nut 8 16
11
M12 washer 6 12
Tab. 4: System components, variant 3
5.1.4 Mounting variant 4: Mounting on lengthwise profile with head plate
No. Designation Quantity/storey at
≤ 3.5 m > 3.5 m – ≤ 7.0 m
2
KUS 5 NOK head plate —6
4Head plate KUS 5 6 —
5
US7 U support 6 / 4* 12 / 8*
9M10 truss-head bolt 2 4
7
M12 anchor 12 24
8
M12 truss-head bolt 4 8
6
M12 threaded rod 2 4
10 M12 hexagonal nut 8 16
11 M12 washer 6 12
Tab. 5: System components, variant 4
* If suspended vertical ladders are installed across multiple storeys, then fewer
U supports are required for the installation from the 2nd storey.

10 | EN OBO Bettermann
Mounting
5.2 Accessories
Designation Figure Function
U support connector
VUS 5
Connect 2 vertical ladders at a storey
height > 3 m.
Clamp clip
2056U M
Cable fastening on the suspended
vertical ladder.
KS-E identification
plate
Identification of the cable system
according to DIN 4102-12
Tab. 6: Accessories
6 Mounting
The SLM50 vertical ladder is supplied unmounted. With all mounting vari-
ants, the ladder rails are first mounted to the ceiling fastening and then
the ladder rungs for cable fastening inserted.
Risk of injury!
The size and weight of the components can cause injuries. Do not mount
suspended vertical ladders on your own and use roller scaffolding or a
raised platform or mounting lift. Wear personal protective equipment.
6.1 Preparations for mounting
Before mounting, the ladder rails must be cut according to the storey
height.
Note! At a storey height of 3–6 m, 2 U support connectors are required. At a
storey height of 6–7 m, 4 U support connectors are required. Along the
length of the ladder rails, reckon with a gap of 13 mm per pair of connect-
ors.
Risk of cutting
During cutting work, metal chips or sharp cut edges can cause injuries to
eyes and hands!
– Wear protective glasses and gloves.
– Deburr cut edges.
1. Cut vertical ladders to the desired length, e.g. using an angle grinder.
2. Deburr cut edges.
WARNING
CAUTION

11 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Mounting vertical ladders up to a max. storey height of 3.5 m
6.2 Mounting vertical ladders up to a max. storey height of 3.5 m
Function loss in the event of fire!
At a storey height > 3.5 m, perfect functioning of the vertical ladder can-
not be guaranteed in the event of fire. Only use mounting variants at a
storey height of maximum 3.5 m.
6.2.1 Mounting the ladder rails with head plates
Fig. 3:
a
Drawing on the drill holes
Note! Distance “a” is dependent on the width of the vertical ladder used. a =
vertical ladder width – 50 mm.
1. Draw on two drill holes at spacing “a” behind the ceiling opening.
Maintain the minimum edge spacing according to the approval of the
anchor used.
2. Using a linear laser, transfer the position of the drill holes to the floor.
3. Pre-drill the drill holes. Ø according to anchor type and approval.
Fig. 4: Mounting head plates
4. Mount head plates with the open sides facing each other, using one
M12 anchor for the ceiling and one for the floor.
WARNING

12 | EN OBO Bettermann
Mounting vertical ladders up to a max. storey height of 3.5 m
Fig. 5: Mounting ladder rails under the ceiling
5. Mount ladder rails under the ceiling with 1 M10 truss-head bolt each
on the head plates.
– Mount the rails with the open sides facing each other.
– Place the bolts up to the limit in the slot, in order to prevent a verti-
cal movement of the vertical ladders.
Note! At a storey height > 3 m, additional ladder rails must be connected with
the mounted ladder rails. See also “6.5 Mounting U support connectors”
on page 30.
Function loss through length expansion in the event of fire!
If there is a fire, the material of the vertical ladders expands.
Do not bolt the vertical ladder to the floor. Maintain a minimum distance
of 40 mm between the end of the ladder rail and the floor.
Fig. 6:
min. 40 mm
Moveable bearing on the floor
WARNING

13 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Mounting vertical ladders up to a max. storey height of 3.5 m
6.2.2 Mounting the ladder rails with a mounting bracket
Fig. 7:
a
Drawing on the drill holes
Note! Distance “a” is dependent on the width of the vertical ladder used.
a = vertical ladder width + 42 mm.
1. Draw on two drill holes at spacing “a” behind the ceiling opening.
Maintain the minimum edge spacing according to the approval of the
anchor used.
2. Using a linear laser, transfer the position of the drill holes to the floor.
3. Pre-drill the drill holes. Ø according to anchor type and approval.
Fig. 8: Mounting installation profiles
4. Mount the installation profiles with 1 M12 anchor on the ceiling and
floor.
– Mount the installation profiles with the short side on the ceiling and
floor.
– Mount the installation profiles with the long side inward.

14 | EN OBO Bettermann
Mounting vertical ladders up to a max. storey height of 3.5 m
Fig. 9: Mounting ladder rails under the ceiling
5. Mount ladder rails under the ceiling with 1 M10 truss-head bolt each
on the installation profiles.
– Mount the rails with the open sides facing each other.
– Place the bolts up to the limit in the slot, in order to prevent a verti-
cal movement of the vertical ladders.
Note! At a storey height > 3 m, additional ladder rails must be connected with
the mounted ladder rails. See also “6.5 Mounting U support connectors”
on page 30.
Function loss through length expansion in the event of fire!
If there is a fire, the material of the vertical ladders expands.
Do not bolt the vertical ladder to the floor. Maintain a minimum distance
of 40 mm between the end of the ladder rail and the floor.
Fig. 10:
min. 40 mm
Moveable bearing on the floor
WARNING

15 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Mounting vertical ladders up to a max. storey height of 3.5 m
6.2.3 Mounting the ladder rails with transverse profiles
1. Draw the drill holes on next to the ceiling openings. Maintain the min-
imum edge spacing according to the approval of the anchor used.
2. Using a linear laser, transfer the position of the drill holes to the floor.
3. Pre-drill the drill holes. Ø according to anchor type and approval.
Fig. 11:
max. 3,5 m
Mounting transverse profiles
4. Mount the U supports in parallel to the vertical ladder, each with 2
M12 anchors.
Fig. 12:
a
Mount head plates under the ceiling.
Note! The threaded rods must be mounted at a spacing of “a” to each other.
a = vertical ladder width – 50 mm.

16 | EN OBO Bettermann
Mounting vertical ladders up to a max. storey height of 3.5 m
5. Run the first threaded rod through the lower U support and up to the
ceiling opening and screw on the M12 nut and M12 washer.
6. Run the threaded rod through the lower side of the upper U support
and screw tight from above using an M12 washer and M12 nut.
7. Lock from below with the previously screwed-on nut and washer.
8. Repeat steps 5–7 with the second threaded rod.
9. With the open sides facing each other, mount the head plates on the
threaded rods, using 1 M12 washer and 2 M12 nuts.
Fig. 13: Mounting head plates on the floor
Note! The head plates must be mounted vertically under the head plates under
the ceiling.
10. With the open sides facing each other, mount the head plates on the
floor, using 1 M12 truss-head bolt each on the U support.
Fig. 14: Mounting ladder rails under the ceiling

17 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Mounting vertical ladders up to a max. storey height of 3.5 m
11. Mount ladder rails under the ceiling with 1 M10 truss-head bolt each
on the head plates.
– Mount the rails with the open sides facing each other.
– Place the bolts up to the limit in the slot, in order to prevent a verti-
cal movement of the vertical ladders.
Note! At a storey height > 3 m, additional ladder rails must be mounted with the
mounted ladder rails. See also “6.5 Mounting U support connectors” on
page 30.
Function loss through length expansion in the event of fire!
If there is a fire, the material of the vertical ladders expands. Do not bolt
the vertical ladder to the floor. Maintain a minimum distance of 40 mm
between the end of the ladder rail and the top side of the transverse
profile.
Fig. 15:
min. 40 mm
Moveable bearing on the floor
WARNING

18 | EN OBO Bettermann
Mounting vertical ladders up to a max. storey height of 3.5 m
6.2.4 Mounting the ladder rails with lengthwise profiles
1. Draw the drill holes on at spacing “a”, in front of and behind the ceiling
openings. Maintain the minimum edge spacing according to the ap-
proval of the anchor used. a = vertical ladder width – 50 mm.
2. Using a linear laser, transfer the position of the drill holes to the floor.
3. Pre-drill the drill holes. Ø according to anchor type and approval.
Fig. 16:
max. 3,5 m
a
Mounting lengthwise profiles
4. Mount the U supports at a 90° angle to the vertical ladder, each with
2 M12 anchors.
Fig. 17: Mounting head plates
5. Run the first threaded rod through the lower U support and up to the
ceiling opening and screw on the M12 nut and M12 washer.

19 | EN
SLM50 suspended vertical ladders for the maintenance of electrical function
Mounting vertical ladders up to a max. storey height of 3.5 m
6. Run the threaded rod through the lower side of the upper U support
and screw tight from above using an M12 washer and M12 nut.
7. Lock from below with the previously screwed-on nut and washer.
8. Repeat steps 5–7 with the second threaded rod.
9. With the open sides facing each other, mount the head plates on the
threaded rods, using 1 M12 washer and 2 M12 nuts each.
Fig. 18: Mounting head plates on the floor
Note! The head plates must be mounted vertically under the head plates under
the ceiling.
10. With the open sides facing each other, mount the head plates on the
floor, using 1 M12 truss-head bolt each on the U supports.
Fig. 19: Mounting ladder rails under the ceiling

20 | EN OBO Bettermann
Mounting vertical ladders up to a max. storey height of 3.5 m
11. Mount ladder rails under the ceiling with 1 M10 truss-head bolt each
on the head plates.
– Mount the rails with the open sides facing each other.
– Place the bolts up to the limit in the slot, in order to prevent a verti-
cal movement of the vertical ladders.
Note! At a storey height > 3 m, additional ladder rails must be connected with
the mounted ladder rails. See also “6.5 Mounting U support connectors”
on page 30.
Function loss through length expansion in the event of fire!
If there is a fire, the material of the vertical ladders expands.
Do not bolt the vertical ladder to the floor. Maintain a minimum distance
of 40 mm between the end of the ladder rail and the top side of the
lengthwise profile.
Fig. 20:
min. 40 mm
Moveable bearing on the floor
WARNING