WEG CFW700 Manual Del Usuario página 59

Troubleshooting and Maintenance
ATTENTION!
The electronic cards have components sensitive to electrostatic discharges.
Do not touch directly on the components or connectors. If necessary, first touch
the grounded metallic frame or use proper grounding strap.
Do not execute any applied potential test on the inverter!
Maintenance
Fan replacement
If the inverter
is stocked
(not in use):
Electrolytic
"Reforming"
capacitors
Inverter being
used: replace
(1) The inverters are set at the factory for automatic control of the fans (P0352 = 2), so that they are only started when
the temperature of the heatsink increases. Therefore number of operating hours of the fans will depend on the operating
conditions (motor current, output frequency, temperature of the refrigeration air, etc.). The inverted records in P0045 the
number of hours the fan remained ON. When the fan reaches 50,000 hours of operation, the HMI display will show the
alarm A177.
Component
Terminals, connectors
Fans /Cooling systems
Printed circuit boards
Power module/ Power
connections
Capacitors of the DC
link (Intermediate Circuit)
Power resistors
Heatsink
54 | CFW700
If necessary, contact WEG.
Table 6.2: Preventive maintenance
Interval
After 50.000 hours of operation.
Every year from the
manufacturing date printed on
the inverter identification label
(refer to chapter 2 GENERAL
INSTRUCTIONS on page
Every 10 years.
Table 6.3: Periodic inspection at every 6 months
Abnormality
Loose screws
Loose connectors
Dirty fans
Abnormal acoustic noise
Blocked fan
Abnormal vibration
Dust in the panel air filters
Accumulation of dust, oil, humidity, etc.
Odor
Accumulation of dust, oil, humidity, etc.
Loose connection screws
Discoloration/ odor / electrolyte leakage
Safety valve expanded or broken
Frame expansion
Discoloration
Odor
Accumulation of dust
Dirt
Instructions
Replacement procedure shown in
Figure 6.1 on page 55
(1)
6.2 on page 56.
Apply power to the inverter with
voltage between 220 and 230 Vac,
single-phase or three-phase, 50 or
60 Hz, for at least one hour. Then,
disconnect the power supply and
3). wait for at least 24 hours before
using the inverter (reapply power).
Contact WEG technical support to
obtain replacement procedure.
Corrective Action
Tighten
Cleaning
Replace fan. See
on page 55
on page 56. Check fan
connections.
Cleaning or replacement
Cleaning
Replacement
Cleaning
Tightening
Replacement
Replacement
Cleaning
and Figure
Figure 6.1
and Figure 6.2