INVT XG50KTR

Three-phase Grid-tied Solar Inverter Running
27
Check Item
Inspection Method
Maintenance Cycle
Electrical
connections
Check whether the system cable connection is
loose, whether the inverter wiring terminal is
loose, and then tighten it according to the method
specified in section 4. Check whether the cable is
damaged, especially whether the rubber skin in
contact with the metal surface has cut marks.
Once per half a year
Cooling fan
maintenance
and
replacement
For three-phase inverter products, observe
whether the air inlet and outlet are normal, and
check whether there are cracks in the fan blades.
Listen for abnormal vibration when the fan is
running. If necessary, clean the air inlet and
outlet; if the fan is abnormal, it needs to be
replaced in time, see section 6.4.2.
Once per half a year
Security
function
Check the inverter LCD and the shutdown
function of the system. Simulate stop and check
the stop signal communication. Check the
warning labels and replace them if necessary.
Once per half a year
6.4.2 Maintenance guidance
Inverter cleaning
The cleaning steps are as follows:
(1) Disconnect the input and output connections.
(2) Wait ten minutes.
(3) Use a soft brush or vacuum cleaner to clean the surface of the inverter and the air inlet and
outlet.
(4) Repeat the operation content in section 6.1.
(5) Restart the inverter.
Fan maintenance
 Stop the inverter before maintenance work, and all power inputs of the inverter
must be disconnected.

Wait at least 3 minutes for the capacitors inside the inverter to fully discharge
before starting maintenance work.
 Only professional electricians can perform maintenance and replacement of the
fan.
Step 1: Stop the inverter and disconnect the electrical connection.
(1) Disconnect the input and output connections.