Specifications

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AVANTI Service Lift for Wind Turbines
6.3.2 Visual inspection
1. Check that the service lift components are mounted
in accordance with the specifications and without any
noticeable defects or missing components.
2. Check that the traction system (ladder rack &
pinion) is not damaged or jammed.
3. Check that the guided system is not damaged or
jammed.
4. Check that the two motor groups are in good
conditions and not damaged.
6.3.3 Functional inspection
Check that the safeties are in place and working.
6.3.3.1 PLATFORM CONTROL BOX
1. Main switch ON/OFF: Turn the ON/OFF electric
isolator on the bottom platform control box to the OFF
position. The green light shall be OFF. The service lift
shall not run. Turn it ON; the green light shall be ON.
2. Emergency stop button: The service lift shall not
move UP/DOWN. Release the emergency stop button
and drive the lift UP approximately 1 m.
3. Press UP/DOWN buttons on the control box. The lift
should travel upwards or downwards.
6.3.3.2 CABIN CONTROL BOX
1. ON/OFF selector: Turn the ON/OFF selector on the
cabin control box to the OFF position. The green light
shall be OFF. The service lift shall not be able to run.
Turn it ON; the ready light (green) shall be ON.
The service lift shall be able to run.
2. Emergency stop button: Press the emergency stop
button. The service lift shall not move UP/DOWN.
Release the emergency stop button and drive the lift
UP approximately 1m.
3. Fault light: Press the emergency stop button, the
fault light (red) of the cabin control box shall be ON.
4. Top and bottom hatch: Open the hatch, the fault
light (red) shall be ON and the lift shall not move UP/
DOWN.
5. Service lift door: Open the door, the fault light (red)
shall be ON and the lift shall not move UP/DOWN.
6. Drive the service lift DOWN until the bottom ob-
struction device hits the bottom mechanical stop. The
lift shall stop.
7. Drive the service lift UP until the top obstruction
device hits with the top mechanical stop. The lift shall
stop.
8. Pull down the top hatch handle until the roof switch
is activated, the fault light (red) shall be ON and the lift
shall not move.
6.4 Annual inspection
Annual inspection may only be performed by AVANTI
or qualified personnel authorised by AVANTI.
6.4.1 Pinions
Check carefully that the pinions are free from
deterioration, damage or abrasion.
Wear limit:
To evaluate the wear of the pinion, “A” dimension
measured on the primitive line shall range between
24.41 and 25.7 mm.
Pinion replacement criteria is shown in table below:
DIMENSIONS NEW PINION (mm) CHANGE PINION ( mm)
A 25.70 < 24.41
6.4.2 Ladder rack
The user has to inspect the full length of the ladder by climbing on
the ladder.
1. Check carefully that the rack is free from
deterioration, damage or abrasion.
2. Check that the ladder mast has no cracks, dents or
damages.
6.4.2.1 Wear limit
1. Using a calibrated rod of Ø 12 and check that
dimension control “B”, as shown in the picture, is
between 32.69 and 34.59 mm. Measure the rack wear
on each mast section.
Rack replacement criteria is shown in table below:
DIMENSIONS NEW RACK (mm) CHANGE RACK ( mm)
B 34.59 < 32.69
2. Using two calibrated rods of Ø
12 mm check that distance between
ladder sections dents is 49.7 ± 0.5 mm.
6.4.2.2 Looseness limit:
To evaluate the looseness, check of
control dimension “C” shall be between 57 and 58 mm.
Rack replacement criteria is shown on table below:
DIMENSIONS NEW RACK (mm) CHANGE RACK ( mm)
C 57 > 58
PRIMITIVE
LINE
A (loose)
24,41
A (nominal)
25.70
B
(nominal)
B (loose)
C (nominal)
C (loose)
57
58