Avanti Model Specifiche Scaricare il pdf (Pagina 32)

AVANTI Service Lift for Wind Turbines

6.4.5 Torques Assurance

Check tightening torques of all screw connections with

approved and calibrated torque wrench in the following cases:

1. In tower factory, during assembly of ladder section to tower

section.

2. On site, pre-commissioning, and in each annual inspection.

See joints to be checked and appropriate tightening torques for

each case in the list below:

Ladder: TORQUE (N•m)

ASSEMBLY IN

TOWER

FACTORY

ASSEMBLY

ON SITE

JOINT METRIC

Rung U-bolts

12 50 50

Rest platforms

attachment

12 50 50

Ladder sections

12 50 50

Ladder

anchorages –

Tower brackets

12 50 12

Rung ﬁttings of

safety rail 6 8 8

Ladder – Top

mechanical stop 8 15 15

Ladder – Bottom

mechanical stop 8 15 15

Motor group: TORQUE (N•m)

ASSEMBLY IN

TOWER

FACTORY

ASSEMBLY

ON SITEJOINT METRIC

Gear box –

Centrifugal brake 8 15 15

Motor group – Main

structure 8 15 15

Motor – Centrifugal

brake 8 15 15

Cabin: TORQUE (N•m)

ASSEMBLY IN

TOWER

FACTORY

ASSEMBLY

ON SITEJOINT METRIC

Fall protection an-

chor point – Cabin

12 15 15

Roller shafts –

Main structure 12 50 50

Counter roller

guide shafts –

Main structure

12 50 50

Anti-derailment

brackets 8 15 15

6.4.6 Overload, static and dynamic tests

1. Overload detection system test: check that the overload

detection system works by applying a load of 125% of working

load limit to the lift ﬂoor. The service lift shall not move UP and

the overload light on the control box shall light up.

2. Static test: apply a load of 125% of working load limit to the

lift ﬂoor. The service lift shall not show any damage or cracks.

3. Dynamic test: apply a load of 110% of working load limit to

the lift ﬂoor. The service lift shall be able to move UP.

If the overload detection system fails, it must be veriﬁed

by AVANTI or qualiﬁed personnel authorised by AVANTI.

6.4.7 Motor group

6.4.7.1 Gear box

1. Visually check for oil leaks. In case oil leaks are found,

exchange the gasket on the gear box cover, and re-ﬁll with oil

as needed.

2. Close the cover and ensure that the correct torque is applied.

6.4.7.2 Centrifugal brake

Perform the following test to check that the centrifugal brakes

are in good condition.

1. Remove the motor cover so that the motor groups are

accessible from inside the lift.

2. Ascend the service lift 20 m.

3. While introducing a tachometer inside the shaft hole of the

top or bottom pinion, and with cold centrifugal brakes, perform

a manual descent of 20 m.

4. If the tachometer´s reading is higher than 140 rpm, it means

that the centrifugal brakes are too worn out.

5. In such case, replace the brake linings and hubs.

This operation shall be done only by AVANTI or qualified personnel authorised by

AVANTI. and following the centrifugal brake manufacturer instructions.

6.4.7.3 Motor brake

1. Load the service lift with a load of:

Release one of the two motor brakes by pulling its hand lever.

While keeping the brake open, push the UP button and stop

after 0,5 m. The cabin should stop and the brake must be able

to hold the cabin. Repeat this operation 3 times.

2. Repeat the operation with the other motor brake.

If any of the two motor brakes fail to stop and hold the service

lift in position, proceed as follows:

3. Measure the air gap. If the air gap is greater than speciﬁed by

the manufacturer and the brake disc thickness is sufﬁcient,

readjust the air gap according to the motor brake manufac-

turer’s speciﬁcations.

Check the brake discs and the springs for irregularities or

damages. If any damages or broken parts are found, replace

motor brake.

6.4.8 Obstruction devices

Clean and lubricate the guiding shafts of the top and bottom

obstruction devices, in order to guarantee that the obstruction

devices compress and decompress properly.

6.5 Ordering spare parts

Only original parts must be used. Spare parts list is available

from AVANTI upon request.

• 1.1 times the nominal load for CE versions.

• 1.5 times the nominal load for AECO version.

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 53 54

Commenti su questo manuale

Nessun commento

Avanti Model Specifiche Pagina 32

Commenti su questo manuale

Prodotti e manuali riguardandi no Avanti Model