HNC Electric HV590 Series, Руководство пользователя

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Section VII. Inspection & Maintenance
7.1 Inspection and Maintenance
Under normal working conditions, in addition to daily inspection, the frequency converter
should be subject to regular inspection (for example inspection for overhaul or as specified but
at an interval of at most six months). Please refer to the following table in order to prevent faults.
Daily Regular Check item Check details Method Criterion
√
LED display
If any abnormal display Visual check As per use state
√ √
Fan
If any abnormal noise or
vibration
Visual and audible check No anomalies
√
Surrounding
conditions
Temperature, humidity, dust
content, harmful gas, etc.
Visual\audible\sensory
check
As per 2-1 item
√
Input output
voltage
If any abnormal input, output
voltage
Measure R, S, T and
U, V, W terminals
As per standard
specifications
√
Main circuit
Fasteners whether loose, if
any signs showing overheat,
discharging, or too high dust
content, or the air piping is
blocked
Check visually, tighten
the fastenings, and clean
the related parts
No anomalies
√
Electrolytic
capacitor
If any abnormal appearance Check visually No anomalies
√
Current-conducting
leads or blocks
Loose or not Check visually No anomalies
√
Terminals If the screws or bolts loose
Tighten the loose
screws or bolts
No anomalies
“√” means need daily check or regularly check.
For inspection,do not disassemble or shake the parts without reason, or pull off the plug-in-
parts at random. Otherwise, the unit will not operate normally, or can not enter the mode of fault
display, or causes faults of components or even parts of the main switch components IGBT
module is damaged.
When needing measurement, the user should note that much different results will be gained
possibly if the measuring is performed with different instruments. It is recommended that the
input voltage be measured with pointer-type voltmeter, output voltage with rectification voltmeter,
input and output current with tong-test ammeter, and power with electrically-driven wattmeter.