LSIS SV-iV5 Series, User Manual

Page: 95 / 131

6. Inspection and Replacement
6-7
6.6 Regular Checking (2 year interval)
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Description How to Check Judgment Criterion
In
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Megger Checking
(between the main
circuit terminal and
the ground terminal
Unfasten the
connection of the
inverter, and then
measure the gap
among R, S, T, U, V,
and W terminals and
this area after
having them shorted
out.
5M Ω or more
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0
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In
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Megger checking
(between the output
terminal and the
ground terminal)
Unfasten the
connection among
U, V, and W, and
then bind the motor
wiring.
5M Ω or more
5
0
0
V
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6.7 Replacement Interval and Maintenance of the Key
Components
Inverter constitutes a number of electronic parts including semiconductor
device. The parts used in the inverter are subject to change as time elapses
for its construction or nature. Therefore without any replacement of parts, it
may cause failure or deterioration in the performance the inverter. For this
reason, it requires regular replacement of the parts.
Name of parts
Standard interval
for replacement
Symptoms
How to Replace and
Countermeasure
Cooling Fan 2 ~ 3 years Poor Rotation
Replacement into new
part
DC Link condenser 5 years
Reduction in
Capacity
Replacement into new
part
Control Panel Flat
Condenser
5 years
Reduction in
Capacity
Replacement into new
part
Control Board Relay - Poor Operation
Replacement into new
part