Specifications

25
User’s, Installation and Maintenance Manual
3.19 Traction system
The traction system is rack and pinion type. The
system has two motor group working on the
same rack. They are installed on the main frame
of the cabin. Each motor groups has a
centrifugal brake, a gear box, a pinion and a
brake motor. Each motor brake includes a
manual release lever allowing a manual descent
in absence of electric current.
3.20 Guiding and
anti-derailment system
The service lift is guided along the stiles of a
ladder by means of ten guiding rollers.
An inductive sensor detects the presence of the
stile. If the stile is not detected (bigger distance
than setting), control is interrupted, avoiding
derailment of the service lift.
The service lift features two anti-derailment
brackets that prevent derailment if guiding
rollers fail.
3.21 Overload limiter
The overload detection system prevents any
movement of the service lift in the event of an
overload. In case of an overload, the overload
light (yellow) lights up.
This system consists of a floating floor with four
load cells. The load cells send the load signal to
the electronic equipment of the cabin control
box.
3.22 Manual descent system
Each motor group features a hand lever, that
allow manual release of the motor electromag-
netic brake. Once the motor brakes are re-
leased, the service lift descends with a con-
trolled speed limited by the centrifugal brake
installed in each motor group.
3.23 Rest platforms
There is a rest platform at least every 6 metres.
The rest platforms are attached to the ladder on
the ladder section connection.
Rest platforms are self folding using torsion
springs so they do not interfere with the cabin
movement when they are not used.
G
PINION
GEAR BOX
MOTOR
ANTI-DERAILMENT
BRACKETS
GUIDING ROLLERS
CENTRIFUGAL BRAKE
It allows to descend with
a controlled speed in case
of emergency.
HAND LEVER
For manual descent
F
FLOATING
FLOOR
CELLS
FIXED
FLOOR
BOTTOM
CABIN HATCH
Push hand levers
upwards and
downwards at the same
time to perform manual
descent and always
look through the
perforated sheet holes.
STOP