Centrifugal fan safety operation procedures
1. Wearing protective equipment
The basic protective equipment for fan operators includes safety helmets, safety shoes, work protective clothing, earplugs, etc., which must be stored in a special cabinet; they must be dressed neatly before operating or maintaining the equipment, and must be replaced immediately if damaged.
2. Centrifugal fan startup operation procedures
(I) Inspection and preparation before startup
Check whether there are obstacles around the fan, whether the anchor bolts are loose, whether the air inlet baffle is closed, whether the motor grounding wire is good, whether the wheel cover is tight, and whether the fan inspection door and observation hole are well sealed; confirm whether the fan lubrication system and circulating water system are normal, whether the regulating valve is flexible, and whether the starter is stuck; prepare necessary driving tools, such as valve hooks.
(2) Start-up operation steps
Please test to confirm whether the address is correct; start the fan motor, and slowly open the air inlet baffle to the required opening (adjust the air volume); if equipped with a frequency converter, adjust the air volume and air pressure by speed, and adjust the frequency to the value specified by the process.
3. Safe operation procedures for centrifugal fans
Ensure that the fan has no air leakage, good lubrication, abnormal noise, vibration, overheating, etc.; it is strictly forbidden to touch the running part of the fan or open the observation door. In case of emergency, such as mechanical damage, the energy should be isolated first to prevent secondary damage, and then managed according to the situation; if someone accidentally gets an electric shock, the power supply should be cut off immediately and corresponding measures should be taken first. Take relief measures after confirming that the person has no power supply.
4. Safe operation procedures for maintenance and repair
When maintaining and repairing the equipment, the power-off and locking procedures must be performed, and the emergency stop and zero position must be pressed on the spot; the fan operation requires the input of the corresponding work permit; after the maintenance work is completed, please clean up the site and close the inspection door.
5. Safe operation procedures for centrifugal fan shutdown
When shutting down, first slowly close the air inlet damper (or reduce the frequency of the inverter to 0), then stop the motor, and then close the cooling water valve.
