20
AVANTI Service Lift for Wind Turbines
4.8 Overload limiter
a) In case of an overload, the lift’s upward travel
should be blocked (L95 versions), and a buzzer should
sound in the connection cabinet.
Attempting to run in an overloaded lift is prohibited!
Performing a manual descent in case of an
overloaded lift is prohibited!
b) Remove enough of the load to make the buzzer
stop and enable upward travel (L95 version).
On entering and starting the lift, the buzzer may
sound briefly. This is due to temporary load peaks
occurring as the lift takes off.
The overload limiter is designed not to activate the
buzzer or stop the lift because of peak loads caused by
the cabin swinging.
If the problem persists have an a certified
technician adjust the overload limiter (Refer to
“Regulation of overload limiter” Appendix in
Installation and Maintenance Manual).
4.9 Manual descent
If a power failure or an operation fault etc. interrupts the
hoist, a manual descent is possible from inside the
cabin.
1. The lever is attached underneath the cabin top. Turn
it down.
2. Push the lever upwards the full way. The service lift
moves downwards. The built-in mechanical overspeed
limiter limits the pace of descent.
3. To stop, simply loosen the lever.
4. After manual descent, the system must be checked
by an expert
During manual descent if the bottom obstruction
device hits an obstacle, the brake release lever is
mechanically disengaged so the further descent is
disabled. The system is automatically reset once the
obstacle is removed.
4.10 Fall arrest device
To lock the fall arrest device in an emergency:
• Pull down the red handle.
If the fall arrest device engages, simply disengage it
from inside the cabin until the fall arrest device is
unlocked by:
• Pulling the black handle downwards.
• However, this is not possible if the safety wire rope
is under tension. If this is the case:
1. Remove the load on the safety wire rope by pushing
the UP button taking the lift upwards a few centimetres.
2. Manually open the fall arrest device until the fall
arrest device is unlocked by:
• Pulling the black handle downwards.
In case of no power and the fall arrest device is locked
with the safety wire rope under tension evacuate the lift
according to the “Evacuation guide”.
Brake release lever in L95
Pull to UNLOCK (Black)
Pull to LOCK (Red)
STOP
!
!
