32 User Manual
7. Maintenance and Repair
7.1 Routine maintenance
Generally, the inverter needn’t to maintain or calibrate, but you need to ensure the
heat sink uncovered by the dust or dirty things.
In order to prove the inverter’s normal function and long life, you best to clean the
inverter and heat sink regularly and ensure there is enough space for air flow
around the heat sink. You can use the compressed air, soft cloth or brush to clean
the surface of inverter and heat sink. Please don’t use water, corrosive chemicals
or strong detergent to clean them.
7.2 Notes of maintain or service
When there are faults occurrences, the inverter can disconnect from grid
automatically and send out fault or warning information. The simple fault
approaches refer to appendix A (FAQ) please.
7.3 Safety for maintain or service
Before you handle the fault, you must open the DC and AC circuit
breaker first and prove others can’t close it again without your
permission.
The inverter must only be opened by qualified personnel for repair.
The inverter can still be charged with hazardous voltages even when it
is disconnected from the PV modules and the grid. Measure the DC bus
voltage, which must be lower than 48V, before starting work on the
electronic system inside the cabinet.
