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8.1.3 Replacement of Vulnerable Components
Vulnerable components of the controller include the cooling fan and filter electrolytic
capacitor. Their service life is related to the operating environment and maintenance.
The service life of the two components is listed in the following table.
Table 8-1 Service life of cooling fan and lter electrolytic capacitor
Component Service Life Possible Damage Cause Judging Criteria
Fan 2 to 3 years
•
Bearing worn
•
Blade aging
•
Check whether there is crack on
the blade.
•
Check whether there is abnormal
vibration noise upon startup.
Electrolytic
capacitor
4 to 5 years
•
Input power supply in
poor quality
•
High ambient
temperature
•
Frequent load jumping
•
Electrolytic aging
•
Check whether there is liquid
leakage.
•
Check whether the safety valve
has projected.
•
Measure the static capacitance.
•
Measure the insulating resistance.
The service life is obtained based on the following conditions:
•
Ambient temperature: average 30°C per year
•
Load rate: below 80%
•
Running time: less than 20 hours per day
8.1.4 Storage of the Controller
For storage of the controller, pay attention to the following two aspects:
1. Pack the controller with the original packing box provided by Monarch.
2. Long-term storage degrades the electrolytic capacitor. Thus, the controller must be
energized once every 2 years, each time lasting at least 5 hours. The input voltage must
be increased slowly to the rated value with the regulator.
8.2 Description of Fault Levels
The NICE1000
new
has almost 60 pieces of alarm information and protective functions. It
monitors various input signals, running conditions and feedback signals. If a fault occurs, the
system implements the relevant protective function and displays the fault code.
The controller is a complicated electronic control system and the displayed fault information
is graded into ve levels according to the severity. The faults of different levels are handled
according to the following table.
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