Overview
MNS withdrawable low-voltage switchgear is widely used in industrial and mining enterprises, power plants, petrochemical facilities, commercial buildings, and residential high-rise structures, among others. It is designed for power distribution and centralized motor control in AC power systems operating at 50–60 Hz with a rated voltage of 660 V or less. This product complies with the relevant technical standards.
Complies with standards such as IEC 439-1, GB 7251, ZBK 36001, and BS 5486.
Operating environmental conditions
1. The ambient air temperature shall not exceed +40°C, nor fall below -5°C, and the 24-hour average temperature shall not exceed +35°C.
2. At a maximum temperature of +40°C, the relative humidity shall not exceed 50%; at lower temperatures, higher relative humidity levels are permitted.
3. The product shall be used at altitudes not exceeding 2,000 meters.
4. Locations free from fire and explosion hazards, severe contamination, chemical corrosion, and conductive dust;
5. In case of special circumstances, please specify at the time of ordering.
After-sales service Service
Product User Manual · Maintenance and Repair · Safety Warnings · After-Sales Service · Ordering Instructions
Maintenance and Repair
During prolonged operation, the fan must undergo scheduled inspections, cleaning, and lubrication to ensure safe, stable performance and effective noise reduction.
When the silencing holes of the fan become blocked by dust, resulting in increased noise, it is necessary to use… Compressed air Perform rinsing, Do not wash with water. , otherwise the noise reduction effect will be compromised.
Ventilators shall be managed and operated by dedicated or part-time operators. Part-time operators must, prior to starting the ventilator, … 10 min Only after confirming that everything is normal may other work proceed, but the operation of the ventilation fan must be monitored at all times.
- Each time the bearing operates 2500 h (About six months) Inspect at least once; if the grease is found to have deteriorated, it must be replaced promptly.
- Before replacement, the bearing must be thoroughly cleaned with gasoline.
- Electric motor with oil injection and drainage device: Clean the grease from the grease fitting, then inject lubricating grease using a grease gun. Add oil while rotating the motor shaft. , ensuring uniform distribution of the grease
- Lubricating grease is used. ZL-3 Lithium-Based Grease , the amount of lubricant is equal to the net internal volume of the bearing housing. 1/2
- Greases of different grades Strictly prohibited to mix.
- Storage More than 3 months : Before use, the motor bearings should be lubricated with grease.
- Storage 6 months and older : Replace the bearing grease before use.
When disassembling or assembling an electric motor, care must be taken to protect the flameproof surfaces. During assembly, apply a coating to the flameproof surfaces. 204-1 Rust-preventive Oil The flameproof joint shall be free from damage and corrosion; otherwise, it will lose its flameproof integrity.
| Maintenance Project | Cycle / Condition | Technical Requirements |
|---|---|---|
| Muffler cleaning | When the noise increases | Compressed air flushing; water is prohibited. |
| Bearing Inspection | Every 2,500 hours (approximately every six months) | Inspect the grease condition; replace it if it has deteriorated. |
| Grease Replacement | According to the inspection results or if stored for more than 6 months | ZL-3 lithium-based grease, filled to 1/2 of the net free volume. |
| Flameproof Surface Maintenance | Each time the motor is disassembled and reassembled | Apply anti-rust oil 204-1; no damage, no corrosion. |
| First maintenance after startup | After three months of operation | Inspect the motor, lubricate it, remove coal dust, and check the nameplate and impeller. |
Transportation and Storage
Proper transportation and storage conditions are the foundation for ensuring the performance and service life of fans.
When not in use, it should be placed in Good ventilation and dryness at the designated location to prevent the motor from becoming damp and to protect the entire unit from corrosion and other damage. If the motor has become damp, it must be dried.
Before leaving the factory, fans must undergo factory inspection; only those that pass are packaged for shipment. Typically, they are… Whole-machine transportation If disassembly for transport is unavoidable, care must be taken to ensure that no damage is inflicted on any component of the fan.
Safety Warning
The product complies with the industry standard MT 222-2019, “Technical Specifications for Local Ventilators Used in Coal Mines,” and the enterprise standard Q/AYF 003-2020. Please read the Product User Manual carefully before using this product.
Please read the Product User Manual carefully before using this product. The operation and maintenance of the motor must be performed in accordance with the motor’s user manual.
- Strictly prohibited Disassemble any flameproof components and move the ventilation fan only when de-energized.
- During the reassembly of the fan after maintenance, all fastening bolts and screws must be tightened to the specified torque; the anti-loosening measures for the impeller and the clearance between the impeller blade tips and the casing must comply with the relevant standard requirements.
- Take care to protect the motor’s flameproof surfaces and flameproof components; if any corrosion or damage is present, Replacement must be purchased from the original manufacturer. , Users are strictly prohibited from making unauthorized configurations or replacements.
- Prior to commissioning or testing the fan, verify that all documentation for the fan and its associated motor is complete, including the product manual, certificate of conformity, safety mark approval certificate, and explosion-proof certification. Ensure the fan is in good condition, with no visible damage to its exterior, and that the nameplate and identification tags are intact. Failure to meet any of these requirements will result in non‑compliance. Test driving or testing is not permitted. and promptly report to the management department.
- During commissioning, testing, and operation, safety warnings shall be posted at the air inlet and outlet, on the sides, and at the motor junction box to prevent personnel from approaching or coming into contact. The fan’s air inlet and outlet must be kept unobstructed. Within a 2 m range No personnel or foreign objects.
- During commissioning or testing, ensure that the rotation direction of each fan impeller matches the direction indicated by the arrow on the housing. For the first and second stages, each stage… Delay 10 s Start in reverse order, Simultaneous startup is strictly prohibited. Class I and Class II. Local axial-flow ventilation fans Running in standalone mode is strictly prohibited. 。
- Non-professionals are not permitted. Disassemble and assemble the fan and its associated motor.
- Strictly prohibited Use this fan or this fan array as the main ventilation fan.
- The installation and operation of local exhaust fans and their associated ductwork must comply with the relevant provisions of the latest Coal Mine Safety Regulations.
- After three months of operation, the fan should undergo maintenance: inspect the motor and replenish lubricant; clean the flow passages and remove coal dust; verify that nameplates and warning signs are intact and complete; and check the impeller for damage.
After-sales Service Commitment
Anyun Company adheres to a customer-first service philosophy and is committed to providing comprehensive, timely, and efficient pre-sales, in-sales, and after-sales support.
Twelve months from the date on which both parties sign to certify acceptance.
Upon receiving a customer call, service personnel will arrive on-site within 24 hours for distances of up to 1,000 km.
After six months of operation, the first maintenance, servicing, and oil change—along with any necessary blade‑angle adjustments—are provided free of charge.
- The company provides a comprehensive, optimized solution covering wind turbine design, manufacturing, and delivery for operational use, and dispatches qualified technical personnel to the site to offer on‑site guidance during equipment installation and commissioning.
- In the event of quality issues arising during the warranty period, we will promptly provide support upon receipt of the user’s notification. Free repair or replacement of parts
- During the warranty period, the company will repair hardware damage caused by improper user operation. Only the cost of materials will be charged.
- Beyond the warranty period, if the user requires repair, the company… Charge a cost fee
- Service personnel will be dispatched within 24 hours, even from 1,000 km away. If the issue is not resolved, the service personnel will not leave the work site.
- The company implements a customer follow-up system: telephone follow-ups are conducted every three months, and on-site visits are carried out every six months.
Ordering Instructions
Please select the appropriate fan model based on your specific requirements. We can provide an optimized structural design tailored to your needs.
- When placing an order, please first determine the required fan’s… Variety, Specification, and Model 。
- If the parameters are inaccurate and prevent you from selecting the correct model, or if the selected motor does not match the specifications listed in the brochure, our technical team can assist you. Help with selection 。
- When there is no suitable model in the brochure, our company can provide you with… Design and manufacture non-standard fans separately. 。
- The fan’s external dimensions and the silencer’s dimensions can be customized according to the user’s specific requirements. Customization 。
- The performance specifications in the brochure are for reference only. We can provide an optimized structural design solution tailored to your specific requirements, offering you… Economical and reliable Ventilation fan products.
After-sales service hotline
Anyun Company is dedicated to serving you, responding promptly upon receiving your call, and ensuring our service personnel remain on site until the issue is resolved.
MNS withdrawable low-voltage switchgear
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No. 1, Wenzhou Avenue, Industrial Park, Yanhu District, Yuncheng City, Shanxi Province
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