CHV180 series frequency inverter special for elevator                                      Maintenance 
.98. 
Items  Instructions  Method   
The screws of 
the external 
terminal 
Check  the  screws  are 
loose or not. 
Tight the screw driver/sleeve. 
PCB board  Dust and dirtiness. 
Use  dry  and  compressed  air  to  clean 
the dirtiness completely.   
The fan   
The  accumulative  time 
of  abnormal  noise  and 
vibration  is  over  20 
thousand hours.   
1. Clean the foreign objections. 
2. Chang the fan.   
Electrolytic 
capacitors   
Check the color changes 
or  not  and  there  is 
peculiar smell. 
Change the electrolytic capacitor. 
Radiator  Dust and dirtiness.   
Use  dry  and  compressed  air  to  clean 
the dirtiness completely. 
Power 
component 
Dust and dirtiness. 
Use  dry  and  compressed  air  to  clean 
the dirtiness completely. 
Connection 
wires   
Check  to  ensure  the 
internal  connection 
wires,  plug-in  parts  and 
the plug of the extension 
card is available.   
The screw driver and hands.   
 
9.3 Replacement of wearing parts 
Fans  and  electrolytic  capacitors  are  wearing  part;  please  change  the  wearing  parts 
periodically for a longterm, safe and smooth operation. The replacement periods of the 
wearing parts are as follows: 
◆Fan: Should be changed after 20,000 hours of utilization; 
◆Electrolytic Capacitor: Should be changed after 30,000~40, 000 hours of utilization.