Do you know the key points for inspecting stainless steel centrifugal fans?

Do you know the key points for inspecting stainless steel centrifugal fans?

When accepting a new stainless steel centrifugal fan unit, it must undergo rigorous inspection before operation.

So, what aspects require attention during the acceptance process? Below is an analysis and discussion of this issue. I hope it proves helpful.

First, inspect the fan unit's appearance, ensuring its external dimensions match the design specifications on the drawings.

Second, ensure the fan housing and legs possess sufficient strength and rigidity. Even when external forces and torques on the flange interfaces reach permissible values, they must not compromise the equipment's normal operation.

Additionally, when employing any connection method between the propeller and the stainless steel centrifugal fan unit's shaft, verify that the rotor's balance state remains stable at high operating speeds without shifting to trip speeds.

Furthermore, equipment noise levels at a distance of 1 meter from the main unit must not exceed the low-noise standards required for the installation site.

Crucially, the motor supplied with the stainless steel centrifugal fan unit must meet relevant requirements and be designed according to operating conditions.

Specifically, the motor's rated power must be at least 1.1 times the maximum power required under operating conditions. Additionally, to satisfy the necessity for frequent starts, the motor must be capable of starting at low flow rates.

Furthermore, during acceptance testing, when the voltage drops to 85% during normal operation of the stainless steel centrifugal fan unit, ensure no overheating occurs. The unit must sustain rated power for 20 seconds under fluctuating voltage conditions.

Moreover, the motor installation space for the stainless steel centrifugal fan unit requires sufficient clearance for maintenance, and electrical components must be kept completely clean. The protective coverage of the coupling guard for the stainless steel centrifugal fan unit must comply with safety regulations.