ABB RCNA-01 Manual de usuario descargar pdf (Pagina 385)

100

101

Diagnostics and maintenance 381

ACH550-01 User's Manual

Heatsink

The heatsink fins accumulate dust from the cooling air. Since a

dusty sink is less efficient at cooling the drive, overtemperature

faults become more likely. In a “normal” environment (not dusty,

not clean), check the heatsink annually. In a dusty environment,

check more often.

Check the heatsink as follows (when necessary):

1. Remove power from the drive.

2. Remove the cooling fan (see Main fan replacement on page

381.

3. Blow clean compressed air (not humid) from bottom to top

and simultaneously use a vacuum cleaner at the air outlet to

trap the dust.

Note: If there a risk of the dust entering adjoining equipment,

perform the cleaning in another room.

4. Reinstall the cooling fan.

5. Restore power.

Main fan replacement

The drive’s main cooling fan has a life span of about 60,000

operating hours at maximum rated operating temperature and

drive load. The expected life span doubles for each 10 °C

(18 °F) drop in the fan temperature (fan temperature is a

function of ambient temperatures and drive loads).

Fan failure can be predicted by the increasing noise from fan

bearings and the gradual rise in the heatsink temperature in

spite of heatsink cleaning. If the drive is operated in a critical part

of a process, fan replacement is recommended once these

symptoms start appearing. Replacement fans are available from

ABB (see page 441). Do not use other than ABB specified spare

parts.

1 2 ... 380 381 382 383 384 385 386 387 388 389 390 ... 473 474

Comentarios a estos manuales

Sin comentarios

ABB RCNA-01 Manual de usuario Pagina 385

Comentarios a estos manuales

Relacionado con productos y manuales para De medición, control y control ABB RCNA-01