Specifications

28
AVANTI Service Lift for Wind Turbines
7. Troubleshooting
STOP
Breakdown Cause Solution
The service lift
cannot ascend nor
descend.
DANGER!
Attempting to use
the lift will jeopard-
ize work safety.
A1 The fixed EMERGENCY STOP
button is activated.
Turn this button clockwise until it moves
out to deactivate it.
A2 Rack or pinions are damaged.
a) Check the damage.
b) Evacuate the cabin.
A3 The service lift is stuck on an
obstacle.
a) Remove the obstacle.
b) Test the operational safety of affected
tower sections.
c) Inform the supervisor.
A4 Power failure.
a) Main switch is set to OFF.
b) Grid voltage is interrupted.
c) Supply between grid connection
and control is interrupted.
a) Turn the main switch to ON.
b) Find the cause and wait for the power
to return.
c) Test and if necessary repair the supply
cable, guide wires, fuses, and/or wiring
from the control box.
A5 Two phases are changed in
the supply.
Have an electrician switch the two phases
in the plug.
A6 The hatches or door switches
are triggered.
Check that door and hatches are properly
closed.
A7 Motor thermal protection.
a) Rearm.
b) If repeated, contact AVANTI.
A8 ELECTROMAGNETIC BRAKES
do not open.
a) Check voltage to the electromagnetic
brakes.
b) Check the springs.
c) Check the brake disc.
d) Regulate the brake disc.
A9 MAGNETIC THERMAL
CONTROL.
a) Rearm.
b) If repeated, contact AVANTI.
A10 CONTROL DIFFERENTIAL.
a) Rearm.
b) If repeated, contact AVANTI.
A11 OVER VOLTAGE
PROTECTION.
a) Rearm.
b) If repeated, contact AVANTI.
A12 EMERGENCY LIMIT STOP
SWITCH is activated.
a) On top platform, manually take the lift down
until the switch is released.
b) On bottom platform, disassemble the
bottom plate until the switch is released.
c) Check the position of the plates.
d) Check the top and bottom mechanical stop
position.
A13 OVERLOAD.
a) Test and if possible reduce the load.
b) If repeated, contact AVANTI.
All tests and repairs to the electric components shall
be performed by an authorised electrician only!
The wiring diagram is placed in the traction
hoist’s power cabinet.
Repairs to the motor group and to the system’s
supporting components shall be performed by
qualified installers only!
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If these steps do not identify the cause and rectify
the fault: consult a qualified electrician or contact
the manufacturer.