Foreword
There are two main ways of heat dissipation of the inverter: one is to rely on its own assembly structure (heat sink) to adopt natural heat dissipation, and the other is to rely on external force and forced cooling with fans. At present, Goodway's fan cooling models include SDT G2, DT, SMT, MT, etc. Fans are particularly important for inverters (especially high-power inverters) because heat dissipation performance directly affects the amount of power generated.
Today we mainly talk about the maintenance of inverter fans in terms of inverter installation and daily maintenance:
1. Installation Notes
1. Installation environment:
In the early stage of installation, the overall environment of the inverter installation must be fully evaluated. If the environment is harsh, such as more dust, more branches and leaves, or installing the device in the grass, it will affect the normal operation of the fan and cause the machine to operate. The machine is reported to be malfunctioning due to loud noise or direct jam.
As shown in the figure below, it is a typical case. For a long time in a place with a lot of dust, the fan outlet is blocked, the fan speed is reduced, resulting in low power generation and reporting a failure. For inverters with forced air cooling, due to their own normal working reasons and heat dissipation requirements, it is recommended that the installation site be far away from the crowd / dwelling place, etc., to ensure the comfort of the living environment.
2. Installation distance (very important):
The installation distance of each model must be considered during installation. If the distance is small, it will increase the fan speed, affect the heat dissipation, and ultimately affect the power generation. For the specific installation distance size, refer to the following:
According to the installation situation that Goodway's after-sales service engineers checked on the customer site, about 35% of the customers' installation distance is not standardized, which is easy to cause unsatisfactory heat dissipation 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.
Outer box deformation
Second, daily maintenance
1. Check regularly.
After the inverter is installed, it is necessary to regularly check the operation of the fan; it can be monitored and checked or the site operation and maintenance personnel survey;
2. Clean in time.
Regularly clean the external fan, such as foreign objects, dirt, etc .;
Cleaning method: Use a screwdriver to remove the 6 screws of the external fan to clean the fan cover and fan blades.
3. Troubleshooting
What should I do if the inverter reports abnormal fan failure?
Fault phenomenon: "Ext fan Failure" is displayed on the screen
Troubleshooting: When the 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 to see if the fan is stuck. Dulwich deals with after sales.
to sum up
For high-power inverters, once the fan fails, it not only affects the amount of power generation, but also seriously damages the interests of customers; the so-called details determine the success or failure. The stable operation of our photovoltaic system brings long-term benefits.
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