The stiffness of the supporting structure of the equipment, the overall contour size of the equipment, the interval between installing vibration dampers, and whether the center of gravity of the equipment is too high.

In a noisy room, feel it with your ears against the wall, open and close the windows, observe if there are any changes in the indoor noise, and check if there are any sound leaks in the pipes or other areas of the room.

Only considering the air conditioning unit and ignoring the vibration isolation of the water pump and pipeline will continue to generate vibration transmission, so comprehensive vibration isolation is necessary. Air conditioning units, pipe supports, rigid connections through walls, small motors, fans, and water pumps all require vibration isolation treatment.

Use your hands to touch the bottom corners of each device and the channel steel or ground below the shock absorber to see if the vibration is reduced. If there is a vibration short circuit, adjust the shock absorber. Check whether vibration reduction measures have been taken for the support of the water pump and pipeline through the wall, the strength of the floor structure, and whether the equipment is located at the load-bearing beam position.

Standard 304, neutral salt spray is generally between 48-72 hours; Standard 316, neutral salt spray generally lasts for 72 to 120 hours. The salt spray test is also related to the processing accuracy and surface flatness of the product.