Only  qualified  electricians  are  allowed  to  carry  out  what  described  in  this 
chapter. Please operate  as the instructions in Safety Precautions. Ignoring 
these may cause physical injury or death or damage to the devices.   
 Ensure the power supply of the inverter is disconnected during the operation. 
Wait for at least the time designated until the POWER indicator is off after the 
disconnection  if  the  power  supply is  applied. It  is recommended  to  use  the 
multimeter to monitor that the DC bus voltage of the drive is under 36V.   
 The  installation  and  design  of  the  inverter  should  be  complied  with  the 
requirement  of  the  local  laws  and  regulations  in  the  installation  site.  If  the 
installation  infringes  the  requirement,  our  company  will  exempt  from  any 
responsibility. Additionally, if users do not comply with the suggestion, some 
damage beyond the assured maintenance range may occur.   
4.2 Mechanical installation 
4.2.1 Installation environment   
The  installation  environment  is  important  for  a  full  performance  and  long-term  stable 
functions of the inverter. Check the installation environment as followings:   
Environment    Conditions   
Installation site    Indoor   
Environment 
temperature 
-10~+50℃ 
If the ambient temperature of the inverter is above 40 , derate 3% ℃
for every additional 1 . ℃  
It  is  not  recommended  to  use  the  inverter  if  the  ambient 
temperature is above 50 . ℃  
In  order  to  improve  the  reliability  of  the  device,  do  not  use  the 
inverter if the ambient temperature changes frequently.   
Please provide cooling fan or  air conditioner to control the internal 
ambient temperature below the required one if the inverter is used