7 
 
1.1.6 Maintenance 
Notice: 
All the instruction photographs and diagrams of opened drive in this manual are only for 
illustration. Do not attempt to operate any AC drives with the cover opened. 
1.2 Warning Label 
The warning label is on the front of the drive. Please read it carefully and follow the 
instructions. 
1.  Do not start or stop the drive by connection or disconnection the power supply. Failure 
to comply could cause drive damage. 
2.  Ensure the motor and equipment are in proper use before operation. Failure to; comply 
could damage the equipment. 
3.  The temperature of the braking resistor and heatsink could be very high during 
operation. Do not touch it or it could result in scald. 
4.  For lift applications, please install mechanical brakes. 
5.  Adjust a few parameters only if necessary as the defaults are optimum settings for most 
of  applications.  Editing  parameters  indiscriminately  could  cause  equipment  abnormal 
operation. 
6.  Interlock the electricity supply with AC drive supply when both are available to a motor.   
1.  Do not touch the main circuit of the drive when power is on. Failure to comply could 
cause electrical shocks.   
2.  Disconnect the power supply before opening the front cover of the drive.   
3.  Maintain  the  drive  5  minutes  after  turning  off  power  supply,  so  as  to  avoid  charged 
capacitors causing physical injury. 
4.  Allow only qualified electric engineers and electrician to maintain, repair and replace the 
AC drive modules. 
1.  The release of breaker on the AC drive primary side could be caused by incorrect wiring, 
short  circuit  and  damaged  drive  components.  Investigate  and  remove  the  problem 
before reconnecting the breaker. 
2.  Do  not  use  a  megger  (insulation  resistor)  to  test  the  drive  control  circuit.  Failure  to 
comply could cause drive damage.