Salicru CV50-008-4F, Руководство пользователя

Страница: 105 / 144

Fault Tracking 105 - 144
Checking part Checking item Checking method Criterion
instruments. the original value
*0.85.
Resistors
Ensure whether there is
replacement and splitting caused
by overheating.
Smelling and visual
examination
NA
Ensure that there is not offline.
Visual examination
or measure with
multimeter The resistors are in
±10% of the
standard value.
Transformers and
reactors
Ensure there is no abnormal
vibration, noise and smelling,
Hearing, smelling
and visual
examination
NA
Electromagnetism
contactors and
relays
Ensure whether there is no
vibration noise in the workrooms.
Hearing NA
Ensure the contactor is good
enough.
Visual examination NA
Control
circuit
PCB and plugs
Ensure there are no loose screws
and contactors.
Fasten up NA
Ensure there is no smelling and
color-changing. Smelling and visual
examination
NA
Ensure there are no cracks,
damage distortion and rust.
Visual examination NA
Ensure there is no weeping and
distortion to the capacitors.
Visual examination
or estimate the
usage time
according to the
maintenance
information
NA
Cooling
system
Cooling fan
Estimate whether there is
abnormal noise and vibration.
Hearing and Visual
examination or
rotate with hand
Stable rotation
Estimate there is no losses screw. Tighten up NA
Ensure there is no color-changing
caused by overheating.
Visual examination
or estimate the
usage time
according to the
maintenance
information
NA
Ventilating duct
Ensure whether there is stuff or
foreign objects in the cooling fan,
air vent
Visual examination NA
8.8.2 Cooling fan
The inverter’s cooling fans have a minimum life span of 25,000 operating hours. The actual life span depends
on the inverter usage and ambient temperature.
The operating hours can be found through P07.14 (accumulative hours of the inverter).
Fan failure can be predicted by the increasing noise from the fan bearings. If the inverter is operated in a
critical part of a process, fan replacement is recommended once these symptoms appear. Replacement fans
are available from SALICRU.