The test run is divided into two steps: no load test run and load test run:
1 The gas at the outlet of the unloaded test fan shall be transferred by air without any resistance. Generally speaking, the outlet pipe is disassembled. No load test, usually 4 hours.
2 The gas at the outlet of the load test port is operated under the condition of resistance, and the specified technical performance is gradually reached according to the technical specification of the factory of the fan, and the time of the load test machine is generally 8 hours. In the case of high-pressure high-speed turbine compressors and blowers, for an extended period of time, it shall be over 24 hours.