SAFERAIL MM 111, Руководство по установке

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Page 4
2.3 FASTENERS USED FOR INSTALLATION
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The SafeRail ladder elements Single Step Ladder MM 111 and Twin Step Ladder MM 112 are
attached to the chosen structure using fasteners that are based on the SafeRail Clamp-rail fastener
MM 211. These are MM 221- MM 263. The SafeRail ladder elements with handrails, Handrail Ladder
MM 121 and MM 122 are attached to the chosen structure using fasteners MM 271
– MM 273.
•
When installing the fasteners follow the instructions given for installing SafeRail Clamp MM 211 on
page 7 section 4.1.
2.4 FIXING DISTANCE BETWEEN FASTENERS
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The maximum fixing distance between the fasteners for SafeRail ladders MM 111, MM 112, MM
113, and MM 121 is 2,500 mm.
•
However, the maximum fixing distance between the two topmost fasteners is 1000 mm.
•
As the fasteners cannot be placed level with the steps of the SafeRail ladder, the fixing distance
between the fasteners must be divisible by 300 mm, for example 1500, 1800, or 2100 mm.
•
For the Handrail Ladder MM 122 with supporting handrails, the maximum recommended fixing
distance between the fasteners is 2900 mm. This requires the Handrail Ladder MM 122 to be
attached by the handrails (using Handrail Ladder Fastener MM 271
–273, for example). A section of
the ladder amounting to a maximum of 1500 mm may be left unsupported at the bottom of the
Handrail Ladder MM 122.
2.5 JOINING OF SAFERAIL LADDER ELEMENTS
•
The SafeRail Joint-extension piece MM 201 is attached using the holes at the ends of the SafeRail
ladder element.
2.6 GROUND CLEARANCE
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We recommend allowing a ground clearance of 500 mm for each SafeRail ladder model, to ensure
that the SafeRail Carriage-safety carriage can be easily coupled with the safety rail and removed
from it.
•
The maximum ground clearance allowed is 1000 mm.
2.7 INSTALLATION OF SAFERAIL CARRIAGE STOPPER -CARRIAGE BARRIERS
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At the top end of the topmost SafeRail ladder element
’s safety rail, install a SafeRail Carriage
Stopper-carriage barrier MM 313 or the unlocking model MM 312. This prevents the safety carriage
from uncoupling from the safety rail accidentally.
•
At the bottom end of the lowermost SafeRail ladder element
’s safety rail, install an unlocking
SafeRail Carriage Stopper-carriage barrier MM 311.
2.8 INSTALLATION OF SAFERAIL INSTRUCTIONAL SIGNS
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The SafeRail ladders must always be equipped with an instructional sign that informs the user of the
need to use a full-body harness and a SafeRail Carriage-safety carriage when using the SafeRail fall
arrest system.
•
The instructional sign must be installed in such a manner that it is easy to spot and clearly visible to
the user before using the system.