Monarch nice3000 - Replacement of Vulnerable Components; Cooling Fan

NICE3000
new
User Manual 11 Inspection and Mainetenance
- 293 -
11
need not be performed again because it has been completed before delivery.
The measured insulating resistance must be greater than 5 MΩ.
Figure 11-1 Main circuit insulation test
R S
T
U
V
W
PB
+
-
500 VDC
megametor
+
-
NICE3000
new
11.3 Replacement of Vulnerable Components
11.3.1 Cooling Fan
Component Possible Cause Judging Criteria
Cooking fan
Bearing worn
Blade aging
● Whether there is crack on the blade
● Whether there is abnormal vibration noise upon startup
◆
Removing and Installing the Cooling Fan of a Plastic Housing
Removing the cooling fan
Depress the hooks on the fan cover, and pull upward to
remove the fan cover.
Hooks
Lift the fan a little, disconnect the fan power cables
from the socket, and then remove the fan.