What is involved in the daily maintenance of centrifugal fans? This is an important question, and only by understanding it correctly can we better use centrifugal fans and extend their lifespan. The daily maintenance of centrifugal fans includes the following:
After 2000 hours of operation:
(1) Clean the surface dust.
(2) Check and lubricate the bearings.
(3) Inspect and tighten all bolts.
(4) Inspect the inlet and outlet.
(5) Check and adjust the coupling clearance and alignment.
(6) Check and adjust the tension of V-belts.
(7) Inspect lubrication points, replace lubricating oil, and seals.
After 8000 hours of operation:
(1) Includes the above maintenance steps.
(2) Disassemble, clean, and inspect all components.
(3) Repair bushings and replace rolling bearings.
(4) Inspect, repair, or replace the impeller.
(5) Check the static and dynamic balance of the impeller.
(6) Inspect, repair, or replace the main shaft.
Here is a breakdown of the maintenance for the individual components:
Housing:
(1) Non-metallic housings should be free from cracks, with flat mating surfaces and good sealing.
(2) Metal housings should be securely welded without signs of cracks or aging.
(3) The inner surface should be flat, smooth, and free from protrusions or indentations.
Impeller:
(1) Weld seams on repaired impellers should be inspected using a magnifying glass or non-destructive testing for cracks and surface porosity.
(2) Riveted impeller pins should be straight and without looseness, with blades free from deformation.
(3) If impeller disc wear reaches half of the original thickness, it should be replaced.
