www.enc.net.cn/en
Tel/Fax:86-755-26984485/26985120
5 Maintenance
25
5 Maintenance
5.1 Routine maintenance
You must assemble and operate it according to demand listed in this
《
service
manual
》
strictly when you use inverter. During run state, temperature, humidity,
vibration and aging parts may affect it. To avoid this, it is recommended to perform
routine inspections.
Table 5-1 Daily inspection items
period
daily periodic
Inspection
item
Inspection content
Criterion
(1)output current
(1)within range of rated value
(2)output voltage
(2)within range of rated value
√
Run state
parameter
(3)inside temp.
(3)temp. increment < 35
℃
√
Cooling
system
(1)installing ambient
(1)good ventilation, unblocked air-path
(1)heating (1)no
abnormality
√
Motor
(2)noise (2)even
(1) vibration, heating
(1)vibration balanced, proper wind temp.
(2)noise
(2) without abnormal sound
√
Inverter
(3)fixation of lead, terminal
(3)fixed screw don’t loose
(1)temperature, humidity
(1)-10 ~+40
℃
℃
40 ~50 used in lower volume
℃
℃
or execute compulsory heat dissipating
(2)dust, water and leakage
(2)no water leakage imprint, no dust
√
Run
ambient
(3)gas (3)no
peculiar
smell
Recommend to inspect with following instrument:
Input voltage: electric voltmeter
；
output voltage: rectifying voltmeter
；
input
output current: pincers ammeter.
5.2 Inspection and replacement of damageable parts
Some component parts in the inverter will be abraded or bear descending
performance for long-term usage
，
to assure that the inverter can run stably and
reliably, it is recommended to perform defending maintenance and replace
corresponding parts if necessary.
Summary of Contents for EDS780 Series
Page 3: ......