
Check whether there are any abnormalities in the power supply and circuits of the forward-curved multi-blade fan.
Verify that the specifications and model of the forward-curved multi-blade fan and its driving device meet user requirements, and ensure all protective measures are fully installed.
Confirm that the switching power supply (operating voltage, power switches, etc.) and wiring comply with electrical codes, and all connections are correctly terminated.
Inspect the fan and connected ducts for condensation, dust and other dirt accumulation. Clean the fan thoroughly if contaminants are found to avoid malfunction upon startup.
Check that anchor bolts, the fan main body, auxiliary accessories and pipeline joints are tightened in accordance with relevant specifications.