All safety covers should be well fixed before inverter is power connected, to
avoid any electric shock.
Only professional personnel are allowed for any maintenance, checking or
replacement of parts.
No live-line work is allowed.
1.9 Maintenance
1.9.1 Periodic Checking
Cooling fan and wind channel should be cleaned regularly to check whether it is
normal; remove the dust accumulated in the inverter on a regular basis.
Check inverter‟s input and output wiring and wiring terminals regularly and
check if wirings are ageing.
Check whether screws on each terminals are fastened.
Check whether inverter is corrosive.
1.9.2 Replacement of wearing parts
The wearing parts include cooling fan and electrolytic capacitors.
The life of the fan usually is 2~3 years. Users should change the cooling fan
according to all running time of inverter. Cooling fan could be damaged
because bearing is damaged and fan blades are aging. Users could check fan
blades for cracks or check the abnormal vibration noise when starting. Users
could change fan according to abnormal phenomena.
The useful life of electrolytic capacitors is 4~5 years. Users should change the
electrolytic capacitors according to all running time of inverter. Capacitors
could be damaged because the power supply is unstable, the environment
temperature is high, frequent over-load occurs and electrolyte is ageing. By
checking whether there is leakage of liquid, or the safety valve bulges out, or
the static electricity and insulated resistor is ok, users could change the
capacitor according to these phenomena.
1.9.3 Storage
Please put the inverter in the packing case of manufacture.
If inverter is stored for long time, please charge the inverter within half a year
to prevent the electrolytic capacitors damaged. The charging time should be
longer than 5 hours.
1.9.4 Daily Maintenance
Environment temperature, humidity, dust and vibration would decrease the life of
inverter. So daily maintenance is necessary to inverter.
Daily inspecting:
Inspecting for noise of motor when it is working.
Inspecting for abnormal vibration of motor when it is working.
Inspecting for the installing environment of inverter.
Inspecting for the fan and inverter temperature.
Daily cleaning:
Keep the inverter clean. Clean surface dust of inverter to prevent dust, metal
powder, oily dirt and water from dropping into the inverter.Inspecting for the fan
and inverter temperature.
Daily cleaning:
Keep the inverter clean. Clean surface dust of inverter to prevent dust, metal
powder, oily dirt and water from dropping into the inverter.
