Inovance Monarch NICE-L-C-4037F

8 Inspection and Maintenance
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293
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8.2.2 Main Circuit Insulation Test
Before measuring the insulating resistance with megameter (500 VDC megameter
recommended), disconnect the main circuit cables from the controller. Do not use the
insulating resistance meter to test the insulation of the control circuit.
The high voltage test need not be performed again because it has been completed
before delivery.
R S
T
U
V
W
Pb
+
-
DC 500V
Megameter
+
-
NICE3000
new
󶙽Main circuit insulation test

Remove the piezoresistor screw to disconnect piezoresistor before testing.
8.3 Replacement of Vulnerable Components
8.3.1 Lifetime of Wear Parts
󶍾
replaced after reaching their
service life. Their service life is related to the operating environment and maintenance.
The service life of the two components is listed in the following table.
Component Service Life
[note]
Cooling fan 󶙯
Electrolytic Capacitor 󶙯
NOTE
◆
The lifetime is based on the following conditions. The user can decide when
to replace the parts according to the uptime.
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Ambient temperature: 40ºC
■
Load rate: 80%
■
Operation rate: 12 hours/day
8.3.2 Cooling Fan
1 Possible Cause
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Cooking fan bearing worn
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Blade aging