There are two main types of heat dissipation methods for photovoltaic inverters: one is to rely on its own assembly structure (radiating fins) to use natural heat dissipation, and the other is to rely on external forces to force cooling by fans. Fans are especially important for photovoltaic inverters (especially high-power inverters) because the heat dissipation performance directly affects the amount of power generated.
Today we mainly talk about inverter fan maintenance from the perspective of photovoltaic inverter installation and daily maintenance:
First, installation precautions
1. Installation environment:
In the early stage of installation, the overall environment of the photovoltaic inverter installation must be fully evaluated. If the environment is harsh, such as more dust, more branches and leaves, or installing the equipment in the grass, it will affect the normal operation of the fan and cause machine operation When the noise is too loud or stuck directly, the machine reports a malfunction.
2. Installation distance (very important)
When installing, you must consider the installation distance of each model. If the distance is small, it will increase the fan speed, affect heat dissipation, and ultimately affect the power generation. The specific installation distance size.
According to the installation situation of Mercer's after-sales service engineers at the customer site, about 35% of customers have irregular installation distances, which may cause the heat dissipation of the machine to be unsatisfactory and affect the final power generation of the machine.
3. Installation method
Avoid brutal loading and unloading or other installation methods during installation to prevent abnormal or stuck external fans.
Second, daily maintenance
1. Check regularly.
After the photovoltaic inverter is installed, it is necessary to regularly check the operation of the fan; it can be monitored and inspected or surveyed by on-site operation and maintenance personnel;
2. Clean in time.
Regularly clean the external fan, such as foreign objects, dirt, etc .;
Cleaning method: Remove 6 screws of the external fan with a screwdriver, and clean the fan cover and fan leaves.
3.Troubleshooting
What should I do if the PV inverter reports an abnormal fan?
Symptom: "Ext fan Failure" is displayed on the screen
Troubleshooting: When the PV inverter is running (30 seconds self-test), observe whether the external fan is rotating; if it does not rotate, you can try to turn the fan and observe whether the fan is stuck with foreign objects; if it still does not rotate after dialing, please contact After sale processing.
to sum up
For high-power inverters, once the fan fails, it not only affects the power generation, but also seriously damages the customer's interests. The so-called details determine the success or failure. We must pay attention to details in the early installation environment selection and later operation and maintenance, etc. The stable operation of our photovoltaic system brings long-term benefits.