Trannergy TRM025KTL, Руководство пользователя

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User Manual 31
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
7.4 Replacing the string fuses
For optional version inverter
，
it is necessary to replace the blow string fuses due to over current.
To do so
，
proceed as follows
：
1. Disconnect the AC circuit breaker.
2.
Turn off the DC circuit and rotate DC switch to the “OFF” position.
3. Wait at least 20 minutes.
4. Loose the lower cabinet as Figure 4-9.
5. Observe the string fuse assignment and check the fuse conductivity using the multimeter. A
non-conductive fuse indicates a fault in the affected string.
6. Have the installer of the PV generator check the affected string and order the fuse from
Trannergy.
7. Replace the broken fuse and close the inverter and startup the inverter again.
Figure 7-3 Replace the broken fuse
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.