The importance and necessity of repairing industrial exhaust fans and centrifugal fans in factories and workshops
Common problems in all types of industrial exhaust fans and the causes of their failure
Air exhaust systems and centrifugal fans operate under constant mechanical, thermal and chemical stresses in industrial environments. Familiarity with the signs of failure helps facility experts to request a technician before serious damage occurs.
Strong vibration and imbalance of the propeller (impeller)
One of the most common defects in industrial centrifugal fans is the abnormal vibration of the body and impeller. This phenomenon is usually caused by the adhesion of dust and grease particles to the blades, asymmetric erosion, physical impact to the blades or deformation of the wheel structure. Excessive vibration in a short time leads to breaking the shaft, crushing the bearings and damaging the electric motor. Kaveh wind turbine completes the static and dynamic balance of the centrifugal fan in Tehran with the portable vibration measuring devices.
Abnormal voice, howling and voice abnormality
Creation of abnormal sound can indicate failure of bearings, loosening of screw connections to the chassis, falling of the belt or wear of the impeller to the housing body. Diagnosing the exact source of the sound requires the high experience of the exhaust fan repairer to identify and fix the source of the sound without opening unnecessary parts.
Overheating of the electric motor and burning of the coil
Increasing amperage consumption, asymmetric amperage, capacitor failure in single-phase motors, overload due to inappropriate pressure drop in the channel, or blockage of the suction and exhaust path, are among the main reasons for overheating of the exhaust fan motor. Thermal monitoring, insulation test and checking of motor current by Kaveh wind turbine experts prevent the complete burning of the electric motor and the imposition of heavy costs.
Looseness, wear and failure of shafts, bearings and bearings
Decay and fat deposits in the exhaust fan of restaurants and industrial hoods
In industrial kitchens and large restaurants in Tehran, the accumulation of fat deposits on the backward centrifuge blades greatly reduces the evacuation efficiency and increases the risk of fire. Basic washing and removing the effects of fat on the balance of the propeller are done by Kaveh wind farm field teams in full compliance with safety standards.
Specialized steps of repairing industrial exhaust fan and centrifuge in Tehran
Providing repair services without an engineering approach and standard methodology will be a temporary solution. The Kaveh wind turbine technical team implements the following step-by-step protocol at the customer's place so that the reliability factor of the device's performance reaches the highest level.
First stage: technical inspection, initial troubleshooting and functional testing
The technicians of Kaveh wind farm, in the first step, measure the working parameters of the system with diagnostic tools such as tachometer, thermovision and clamp ammeter. Checking the alignment of the foleys, the health of the chassis and shock absorbers, the amount of belt tension and the visual inspection of the rotating parts is done in this section.
Second stage: safe separation and specialized cleaning of parts
After the complete power cut and circuit safety lock (Lockout/Tagout), the parts that need to be handled are opened and the propeller is washed from chemical particles, hardened dust or grease to prepare for accurate mechanical measurements.
The third step: fixing the swing of the shaft, replacing the bearing and re-aligning the bearing
If deviation or wear is observed in the central axis, the shaft is clocked and if necessary, portable turning or its replacement is prioritized. The use of original bearings in accordance with the machine's speed and static load will guarantee the continuation of silent operation.
The fourth step: In-situ Dynamic Balancing
The most advanced part of centrifugal fan exhaust repair is in-situ balance. Portable balance devices are attached to the rotating fan and the unbalanced mass is measured in different planes. Then the correction weights are installed with precision welding or mechanical connection at the calculated angles so that the vibration level is lower than the permissible limit of ISO 10816 standard.
The fifth step: laser alignment of the pulleys and the final test under load
The misalignment of the foleys causes rapid wear of the belts and loss of engine energy. Paid laser alignment of motor and propeller, precise adjustment of belts and test run for several hours under full load are done to stabilize temperature and vibration to be approved by the technical supervisor.
The special services of Kaveh wind industry in the field of industrial fans in Tehran
Kaveh Air Conditioning, as a specialized hub for designing, manufacturing and renovating industrial ventilation systems, has prepared a complete basket of repair services for factories, complexes and projects in the capital:
- Specialized repair of all types of exhaust fans, utility, double, package, ceiling (radial) and high pressure spiral fans.
- High-precision dynamic balance on site without the need to implement the fan in Shamsabad, Abbasabad, Simindasht, Golgoun, Chahardangeh and other areas of Tehran.
- Service, replacement, winding and testing Explosion-proof electric motors (EX) and heavy industrial motors.
- Custom design and manufacture of stainless steel, 316 steel, galvanized and wear- and heat-resistant propellers.
- Adjustment and direct coupling, belt and gearbox with first-class spare parts.
Why is Kaveh Badware the best choice for centrifugal fan repair in Tehran?
Choosing a group that, in addition to executive knowledge, has computational and academic mastery of fluid science and rotor mechanics, guarantees the final quality of repairs. Kaveh wind turbine is known for the following prominent features:
Speed in dispatching experts and support in all areas of Tehran
The nationwide coverage of the east, west, north and south of the capital, as well as the industrial suburbs, has made our experts arrive at the project site as soon as possible and minimize the downtime of your unit.
Using modern portable equipment
Vibration analysis tools, sound analyzers, laser alignment and balance devices of the new generation enable technicians to perform the most sensitive workshop services completely inside your engine room or production line.
Trained engineering staff and technicians
Kaveh Air Force personnel with a deep understanding of industrial ventilation standards, gas dynamics and material behavior, identify the root defects of the system and don't just fix the surface symptoms.
Use of original spare parts and service warranty
All bearings, pulleys, belts, shafts, and consumables from world-renowned brands are delivered to customers with a performance guarantee.
Golden tips for basic maintenance and prevention of exhaust fan failure
In order to optimize the efficiency of ventilation systems and reduce repair visits, the maintenance technicians are recommended to observe the following:
- Periodical check of bearing grease and use of grease with appropriate viscosity according to the manufacturer's recommendations.
- Check alignment and belt tension every two months to prevent slipping or additional pressure on the shaft.
- Continuous dusting and descaling of propeller blades, especially in environments with sticky dust or soot.
- Control Vibration absorbers under the chassis and prevent the transfer of environmental vibrations to the fan housing.
- Daily or weekly log recording of the ampere consumption of the motor, the sound of operation and the temperature of the bearing shell.
summary
Industrial exhaust fans and centrifugal fans are vital elements of air quality control, maintenance of sanitary conditions and non-stop circulation of Tehran's industrial lines. Any occurrence of vibration, abnormal sound or loss of suction should be addressed quickly to avoid irreparable damage to the engine and body. The repair service of industrial exhaust fan and centrifuge in Tehran by the experienced team of Badfazar Kaveh provides the highest productivity coefficient with the lowest cost and in the fastest possible time for the industries and commercial centers of the capital. In order to receive free advice, send an expert immediately and inquire about services, just contact Kaveh wind engineers.
