What are the key points and frequency of maintenance for the motor of a fume hood?

Key points for maintenance

Clean the motor surface: Regularly remove dust and debris from the motor surface to prevent dust accumulation from affecting the motor's heat dissipation effect. The motor casing can be wiped with a clean damp cloth. For some hard-to-clean areas, a soft-bristled brush can be used to gently remove the dust.

Check the motor's operating status: During the use of the fume hood, pay attention to listening to whether the motor's running sound is normal. If the motor makes abnormal noises, such as humming or friction sounds, it may indicate that there is a fault inside the motor. It is necessary to stop the machine in time for inspection. At the same time, observe the vibration of the motor. Excessive vibration may cause damage to the motor and should be adjusted or repaired in time.

Check the motor connection components: Regularly inspect the motor connection components, such as screws and terminal blocks, to ensure they are securely fastened and reliable. Loose connecting components may cause poor contact of the motor, affecting its normal operation and even potentially leading to safety accidents.

Lubricate the motor bearings: According to the motor's user manual, lubricate the motor bearings regularly. Select the appropriate lubricant and operate in accordance with the specified lubrication cycle and amount. Insufficient lubrication will lead to accelerated wear of bearings and affect the service life of the motor.

Check the insulation performance of the motor: Regularly use an insulation resistance tester to check the insulation performance of the motor. If the insulation resistance value of the motor is lower than the specified value, it indicates that the insulation performance of the motor has declined, and a leakage accident may occur. Timely maintenance or replacement of the motor is required.

Maintenance frequency

Daily inspection: Before each use of the fume hood, the operator should briefly check whether the appearance of the motor is intact and whether there are any abnormal sounds or vibrations. During use, pay attention to the operating status of the motor. If any abnormality is found, stop the machine in time.

Weekly maintenance: Clean the motor surface once a week to remove dust and debris. At the same time, check whether the connecting parts of the motor are loose. If any are loose, tighten them in time.

Monthly inspection: Lubricate the motor bearings once a month to ensure smooth operation. Check the insulation performance of the motor. Use an insulation resistance tester to measure the insulation resistance value of the motor to ensure it meets the requirements.

Annual maintenance: A comprehensive maintenance of the motor is carried out once a year, including disassembling the motor for inspection, cleaning the dust and debris inside the motor, checking whether the motor windings are damaged, and replacing worn parts, etc.