General Instructions on Assembly and Usage
Layher Uni Light Tower
Edition: 15.12.2011
The rolling tower may be used for the scaffolding group
and as additionally specified in the German operating
safety regulations (BetrSichV).
The user of mobile working platforms must
comply with the following instructions:
1. The user must check the suitability of the selected
rolling tower for the work to be performed (Section 4
of BetrSichV).
2. The max. platform height is, in accordance with
DIN EN 1004:2005-03
– inside buildings 12.0 m
– outside buildings 8.0 m
The material and ballasting requirements on page 5 must
be complied with; risk of accidents in the event
of non-compliance. For greater heights, additional
measures are necessary, obtainable from the manu-
facturer. Stability of the rolling tower must be assured.
3. The assembly, modification or dismantling of the rol-
ling tower in accordance with the present instructions
for assembly and use may only be performed under the
supervision of a qualified person and by
professionally suitable personnel after special
instruction. Only the scaffolding types shown in these
instructions for assembly and use may be used.
The unit must, after assembly and before being put
into service, be inspected by persons qualified to do so
(Section 10 of BetrSichV). The inspection must be do-
cumented (Section 11 of BetrSichV). During assembly,
modification or dismantling, the rolling tower must be
provided with a prohibition sign indicating “No access
allowed” and be adequately safeguarded by means
of barriers preventing access to the danger zone (Be-
trSichV Annex 2, para. 5.2.5).
4. Before starting assembly, examine all components in
order to make sure they are in perfect condition. Only
undamaged original components for Layher Mobile
tower systems may be used. Tower parts such as snap-
on claws and spigot must be cleaned of dirt after use.
Tower parts must be protected against slipping and
impacts during truck transportation. It must be ensured
that the tower parts are stored where they are free from
weather effects. Tower parts must be handled in such a
way that they are not damaged. For the fixing of ballast
weights and wall supports see the tables on page 5 of
these Assembly and Use Instructions.
5. During assembly and dismantling, system decks
or scaffold planks according to DIN 4420-3 (mini-
mum measurement: 28 x 4.5 x 220 cm long) must
be built in as auxiliary decks at maximum height
intervals of 2.0 m. Observe the equirements
for maxi-
mum support distances of scaffold boards
according
to their thickness. These auxiliary decks, providing
a safe footing for assembly and dismantling, are
removed after the erection. Each platform must be
completely boarded.
Due to structural reasons intermediate platforms with
access decks must be built in at maximum intervals
of 4.00 m. For safety reasons, it is advisable for two
persons to erect the towers above a height of 4.0 m. To
assemble the upper tower sections, the individual parts
must be hoisted using transportation ropes.
Small quantities of tools and materials can be carried
up in person, otherwise also hoisted by transportation
ropes to the working level.
6. Secure the ladder frame joints with spring clips
against unintended lift-off.
7. During assembly push guardrails and diagonal
braces outwards as far as possible on the ladder
rungs.
8. At intermediate decks used for climbing only,
two guardrails are required. For small towers where
the height of the deck exceeds 1.0 m, equipment must
be provided that permits the attachement of side guards
in accordance with DIN EN 1004:2005-03
9. Access to the working platform is only permitted on
the inside (exception Tower Type 3201) using the
ladder rungs provided.
10. It is not permitted to work on two or more decks at
the same time. In the event of discrepancies consult the
manufacturer.
11. Persons working on mobile towers should not lean
or press against the guardrails, nor jump onto platforms.
12. It is not permitted to affix lifting or hoisting devices
to mobile towers.
13. Move the tower manually and only on firm, level
ground which is free from obstacles and sufficiently
load bearing. Move the tower only longitudinally or
diagonally. Avoid any impact. After extending the base
one-sided with wall supports in use, move parallel to
the wall only. Do not exceed normal walking speed
during movement.
14. No persons or loose objects must remain on the
tower when moving it.
15. After moving the tower, lock the castors by pressing
the brake lever.
16. Do not expose the tower to corrosive liquids or
gases.
17. Mobile working platforms must not be bridged
between each other, or a building without special
verification. The same applies to special erections, e.g.
suspende use etc.
18. At a wind force above 6 (Beaufort-Scale) and after
finishing the working shift, move the tower when
operating outdoors or in open buildings to a wind
protected area or secure ot by other approviate
measures against toppling over. (Wind speeds above
6 on the Beaufort scale can be recognised by noticeable
difficulty when walking.) If possible, rolling towers used
on the outside of buildings must be securely attached to
the building or to another structure. It is recommended
that rolling towers be anchored when they are left
unattended.
19. In order to achieve different working heights decks
may be fixed one rung higher or lower. Take care to
comply with the prescribed guardrails at heights of 1
m or more. Diagonal braces, too, must be placed a the
corresponding lower or higher level. Contact the manuf-
acturer in order to find out whether an additional static
calculation will be necessary.
Avoid horizontal and vertical loads that can cause the
mobile work platform to topple over, such as:
- horizontal loads, for example when working on adja-
cent structures,
- additional wind loads (due to tunnel effect from
through-type buildings, unclad buildings and corners).
20. Keep the access hatches shut, except when
climbing the tower.
21. The mobile beam may double as a rung for climbing
up and down.
22. All couplers must be fastened with 50 Nm.
23. Set the rolling tower verhedly by placing suitable
materials underneath it. The inclination must not
exceed 1%.
24. A rolling tower is not intended for use as a stairway
tower providing access to other structures.
25. It is prohibited to jump on the decks.
26. A check must be made that all parts, auxiliary tools
and safety equipment (ropes etc.) for erecting the
rolling towers are available on the site.
27. If stipulated, mobile beams or tower supports or
outriggers and ballast must be installed.
28. It is prohibited to increase the height of the decking
by using ladders, boxes or other objects.
29. It is not permitted to construct bridges between the
rolling tower and a building.
30. Rolling towers are not designed to be lifted or
suspended.
Wilhelm Layher GmbH & Co. KG
Scaffolding Grandstands Ladders
Post Box 40
D-74361 Gueglingen-Eibensbach
Phone: +49-71 35-7 00
Fax: +49-71 35-7 03 72
www.layher.com
All dimensions and weights are guideline values.
Subject to technical modification.
Our deliveries shall be made exclusively in accordance
with our currently valid General Terms of Sale.
