Hub van Doorneweg 8 • 2171 KZ Sassenheim – NL •
T
+31(0)252 228850 •
F
+31(0)252 228235 •
E
sales@euronorm.nl •
I
euronormdrives.com
Hub van Doorneweg 8 • 2171 KZ Sassenheim – NL •
T
+31(0)252 228850 •
F
+31(0)252 228235 •
E
sales@euronorm.nl •
I
euronormdrives.com
68
69
NEURN030000_220_A
NEURN030000_220_A
10 Maintenance and repair
10.1 Inspection and maintenance
During normal use of the inverter, in addition to routine inspections, the regular inspections are required (e.g. the overhaul
or the specified interval, and the interval shall not exceed 6 months), please refer to the following table to implement the
preventive measures.
Check Date
Check
Points
Check
Items
Check to be done
Method
Criterion
Rou-
tine
Re-
gular
√
Display
LED display
Whether display is abnormal or not
Visually check
As per use status
√
√
Cooling
system
Fan
Whether abnormal noise or vibration exists or
not
Visually and
audibly check
No abnormal
√
Body
Surrounding
conditions
Temperature, humidity, dust, harmful gas.
Visually check
with smelling
and feeling
As per Section 2-1
√
Input/output
terminals
Voltage
Whether input/output voltage is abnormal or
not
Test R, S, T
and U, V, W
terminals
As per standard
specifications
√
Main circuit
Overall
Whether these phenomenon of loose
fastenings, overheat, discharging, much dust,
or blocked air duct exist or not
Visually check,
tighten and
clean
No abnormal
Electrolytic
capacitance
Whether appearance is abnormal or not
Visually check
No abnormal
Wires and
conducting bar
Whether they are loose or not
Visually check
No abnormal
Terminals
If screws or bolts are loose or not
Tighten
No abnormal
”√” means routine or regular check to be needed
Do not disassemble or shake the device gratuitously during check, and never unplug the connectors, otherwise the
system will not run or will enter into fault state and lead to component failure or even damage to the main switching device
such as IGBT module.
The different instruments may come to different measurement results when measuring. It is recommended that the pointer
voltmeter shall be used for measuring input voltage, the rectifier voltmeter for output voltage, the clamp-on ammeter for
input current and output current, and the electric wattmeter for power.
10.2 Parts for regular replacement
To ensure the reliable operation of inverter, in addition to regular care and maintenance, some internal mechanical wear
parts(including cooling fan, filtering capacitor of main circuit for energy storage and exchange, and printed circuit board)
shall be regularly replaced. Use and replacement for such parts shall follow the provisions of below table, also depend on
the specific application environment, load and current status of inverter.
Name of Parts
Standard life time
Cooling fan
1 to 3 years
Filter capacitor
4 to 5 years
Printed circuit board(PCB)
5 to 8 years
10.3 Storage
The following actions must be taken if the inverter is not put into use immediately(temporary or long-term storage) after
purchasing:
• It should be store at a well-ventilated site without damp, dust or metal dust, and the ambient temperature complies
with the range stipulated by standard specification
• Voltage withstand test can not be arbitrarily implemented, it will reduce the life of inverter. Insulation test can be made
with the 500-volt megger before using, the insulation resistance shall not be less than 4MΩ.
37
