Maintenance
35
6 Maintenance
6.1 Routine maintenance
When you use EDS300 series you must assemble and operate it according to
demand listed in this
《
service manual
》
strictly. During run state, temperature,
humidity, vibration
，
parts aging and wearing may affect it and potential fault occur.
To avoid this, it is recommended to perform routine inspections and maintenance.
Table 6-1 Daily inspection items
Period
Inspection
item
Inspection content
Criterion
Daily
Periodic
√
Running status
parameter
(1) Output current
(1) Within range of rated value
(2) Output voltage
(2) Within range of rated value
(3) Inside temp.
(3) Temp. increment < 35
℃
√
Cooling
system
(1) Installing ambient
(1) Good ventilation,unblocked
air flue
(2) local fan of inverter
(2) Rotate normally without
abnormal noise
√
Motor
(1) Heating
(1) No abnormality
(2) Noise
(2) Even
√
Inverter
(1) Vibration, heating
(1) Vibration balanced, proper
wind temp
(2) Noise
(2) Without abnormal sound
(3) Fixed lead and terminal (3) Fixed screw no looseness
√
Running
ambient
(1) Temperature, humidity
(1) -10
℃～
+40
℃
40
℃～
50
℃
used in derating or
forced heat dissipation
(2) Dust, water and leakage
(2) No water leakage imprint,
no dust
(3) Gas
(3) No peculiar smell
Recommend to inspect the inverter with following instruments:
Input voltage: electric voltmeter; Output voltage: rectifying voltmeter;
Input&output current: pincers ammeter.
6.2 Inspection and replacement of damageable parts
Some component parts in the inverter will be wearing or performance declining
for long-term usage
，
to assure that the inverter can run stably and reliably, it is
recommended to perform preventive maintenance and replace corresponding parts if
necessary.
(1) Cooling fan
ENC
