Frequently Asked Questions

Wet Scrubbing Process: Grease-laden air first passes through multiple stages of water spray, where mist contacts high-temperature exhaust to cool and condense the gas, capture coarse oil particles, dissolve some odor molecules, and trap sparks. It then enters a high-voltage electrostatic field to adsorb sub-micron oil droplets before being released through final odor treatment. The front-end water wash handles the majority of the load, while the rear electrostatic section operates under lower pressure with extended cleaning intervals.

High-voltage electrostatic fields charge oil mist particles, which are then adsorbed and collected by the plates. Medea uses 0.4-1.2 mm stainless steel plates with a 12-bend reinforcement structure. Each electric field module weighs approximately 26 kg. Purification efficiency is reported based on the standard testing conditions outlined in the official test report.

The water filtration system performs pre-treatment to capture dust, reduce odors initially, and cool high-temperature flue gas. The electrostatic stage adsorbs oil droplets and particles. The medium-efficiency filter captures fine particles at the PM2.5 level. The high-efficiency composite coconut shell activated carbon filter traps even finer particles and adsorbs odor molecules.

The internal circulation system purifies cooking fumes within the unit and recirculates clean air indoors, making it ideal for mall islands, ground-floor office spaces, and subway retail units without existing ductwork. The external exhaust method follows traditional practice: after purification, fumes are vented to the roof or outdoors, suitable for street-facing shops with proper exhaust conditions.

An internal circulation system does not mean no exhaust is vented; rather, it purifies the cooking fumes inside the unit before recirculating them back into the room: canopy → water wash or deodorization → electrostatic precipitation → deodorization → outlet. When used with open-flame stoves, the kitchen still requires independent ventilation to promptly remove heat and combustion byproducts.

Composite purifiers achieve over 95% oil mist removal efficiency under rated conditions, with some models rated at 98%. Odor removal is approximately 80%. Water-circulating units show no visible smoke at the exhaust outlet. For low-altitude direct discharge applications, ensure adequate airflow and odor-removal stages are installed. Actual performance depends on the number of burners, oil mist concentration, and airflow matching.

The unit features a 1.0 mm stainless steel body with seamless folding and full welding. All components exposed to smoke, oil, and moisture are corrosion-resistant. SUS304 material is available upon request.

Each unit comes with a built-in stainless steel electrostatic filter. The quantity increases with model length: 1.6 meters (2 sets), 2 meters (3 sets), and 2.4 meters (4 sets). Plates are formed in one piece via stamping, reinforced with 12 bends.

Equipped with an AC pure copper winding dual-inlet outer rotor centrifugal fan for slow suction decay and long service life. Fan quantity varies by model: 1.6 models have 3 units, while 2 and 2.4 models have 4 units.

All products operate on 220V/50Hz power. Other voltage specifications require a separate transformer configuration.

For heavy-oil, recirculating models: 1.6 m 1600×1100×1365 mm, approx. 280 kg; 2 m 2000×1100×1365 mm, approx. 330 kg; 2.4 m 2400×1100×1365 mm, approx. 380 kg. See the product specifications table for details by model.

Normal operating noise is typically no higher than 65 dB, comparable to a normal conversation. The fan offers 9 speed settings and produces approximately 68 dB at full load. Noise can be further reduced using vibration dampers and flexible duct connections.

The water system recirculates within the tank, requiring no continuous inflow—only periodic top-ups and water changes. Estimated daily consumption: 1.6 m ≈ 36 L/day, 2 m ≈ 44 L/day, 2.4 m ≈ 55 L/day. Low water cost.

Power varies randomly, approximately 1.8-2.8 kW. Based on 1.8 kW running for 4 hours daily, the estimated consumption is about 7 kWh/day. At commercial rates, the average daily cost is under 10 yuan. Actual figures depend on local electricity prices and operating hours.

No. The device targets grease particles and odors, not combustion gases such as carbon monoxide or carbon dioxide. Open-flame scenarios require supplemental exhaust ventilation or fresh air systems.

Yes. Multiple stoves can share a single canopy; calculate the airflow based on the total number of burners. This approach has been successfully implemented in multiple similar projects.

For example, in the heavy-oil smoke recirculation series: MDY-ND16 is 4000 m³/h, MDY-ND20 is 5000 m³/h, and MDY-ND24 is 6000 m³/h. Airflow for other product lines is listed in their respective specification tables.

The water filtration unit consists of a pump, spray pipe, perforated plate, and mist eliminator. The pump pressurizes water to create a stable film on the perforated plate; as smoke passes through this film, primary purification occurs.

Device price does not include installation. Local service providers or professional technicians will install on-site; fees are quoted separately based on actual conditions. Remote guidance is available for remote areas.

Light smoke and heavy smoke series installations take approximately 4 hours and include installation videos. Standardized mounting points secured with brackets can be completed in as little as 30 minutes.

Standard sequence: hood → purifier → fan → exhaust outlet. The purifier is installed in the fan's negative pressure zone, ensuring oil fumes are purified before passing through the fan. This reduces oil buildup on the impeller and extends equipment life.

Confirm your plan during the early stages of renovation. Pipe routing, equipment placement, utility预留s, and exhaust outlets must be finalized before construction begins; otherwise, retrofitting later will increase costs.

Standard models are in stock and typically ship within 3-5 days. Custom non-standard units have a production lead time of approximately 10-15 business days; installation time is calculated separately.

Yes. On-site surveys can be scheduled, or customers may provide photos and videos of the site for configuration confirmation. Most cities are covered by our on-site team.

No external exhaust duct required, but utilities are still needed. Water-cooled models require a connection to the water supply and drainage, and the unit itself must be powered.

The temperature of the purified air will be slightly higher than room temperature, with the stove being the primary heat source. You can lower the oil fume temperature below 50°C using front-end water washing, install an exhaust fan, pair it with a kitchen air conditioner or fresh air system, and adjust the airflow direction to avoid occupied areas.

Calculate airflow based on burners: 2000 m³/h per standard burner, 3000 m³/h for heavy-oil cooking (e.g., stir-frying, grilling), with a safety margin of 1.2-1.5x. Multiple burners under the same canopy can share one unit; separate units are recommended for dispersed cooking stations.

Allow maintenance clearance on both sides and in front. Ensure the front provides sufficient space for pulling out the electric field for cleaning. Typically, increase length and width by 30–50 cm beyond equipment dimensions, and reserve height for overhead lifting or floor mounting.

For all-in-one, heavy-oil, and light-oil models, install at a ceiling height of no less than 2.7 meters. If the ceiling height is insufficient, choose a split model or a custom solution.

When using open-flame appliances, it is recommended to install a dedicated fresh air system to ensure adequate oxygen for combustion and to efficiently remove excess heat and exhaust gases.

The device generates heat. Kitchen ambient temperature is typically 2-5°C higher than the surrounding environment. This can be mitigated by optimizing fresh air intake, exhaust fans, and airflow direction.

Yes. The ductless recirculation system does not require a roof exhaust connection, making it ideal for mall island units, subway station kiosks, and street-level retail spaces in office buildings where external venting is not feasible.

The recommended distance between the bottom of the exhaust hood and the cooking surface is approximately 80 cm, which can be adjusted slightly based on stove height and site conditions.

Remove the stainless steel filter, soak it in hot water with a specialized cleaner for about 5 minutes, then rinse with a water gun and clear water. Air dry before reinstalling. For light cooking fumes, clean every 1-2 months; for heavy fumes (e.g., BBQ, Sichuan cuisine), clean every 2-3 weeks. MDY-Q self-cleaning models automatically spray-clean overnight.

Power off before cleaning. The device automatically releases residual static electricity upon shutdown and includes short-circuit and leakage protection that cuts power in 0.05 seconds. Ceramic insulators are waterproof and oil-resistant; following operating procedures eliminates leakage risks.

The MDY-Q series features fully automatic hydraulic spray self-cleaning, with options for scheduled or one-touch activation. Other models require manual pull-out electrode cleaning—an easy process that doesn't need professional assistance.

The water filtration system and electrostatic plates are washable and reusable, with a cycle of 1-3 months. The medium-efficiency filter should be replaced approximately every 6 months. The high-efficiency composite activated carbon filter needs replacement every 6-12 months, depending on usage intensity.

Yes. The pump is a standard, externally mounted modular component that can be serviced without disassembling the entire unit. Spare parts are available at service centers.

The waterway is made of stainless steel; regular water changes and scale inhibitor addition prevent scaling. A drain valve allows complete drainage during shutdown. Properly connecting the drain hose prevents floor pooling.

No. The water circulation chamber and electrostatic field are separated by a baffle and gravity separation structure, preventing spray water from entering the electric field. The entire unit features waterproof design.

Indoor installations generally won't freeze. In colder regions, drain the water when shutting down to prevent pipes from cracking due to low temperatures.

Yes. Oil accumulation reduces pipe diameter, increases resistance, and lowers air velocity, which can impair purification performance. We recommend inspecting the ductwork quarterly and performing regular cleaning.

Periodic field cleaning maintains stable performance; degradation occurs only after prolonged neglect causes oil buildup and thickening on the plates. The device's touchscreen includes built-in maintenance reminders to support scheduled upkeep.

Runs continuously for approximately 12 hours. After continuous operation, allow the device to rest for 2-4 hours to ensure stability.

Maximum intake temperature is approximately 60°C. The device will trigger overheating protection if this limit is exceeded.

Yes. The device automatically alarms and shuts down to protect against dry burning if abnormal water levels or pump failures occur.

Required. Clean the water tank, mesh panel, and mist eliminator every 1-3 months, and inspect nozzles and piping for condition.

Standard tap water is sufficient; inlet water pressure must exceed 0.018 MPa. In areas with hard water, we recommend installing a descaling system.

Warranty for the complete unit is as per the contract, typically one year. Consumables and damage caused by human error are not covered; core components can be replaced free of charge if damaged without human intervention.

Two common issues: pumps burn out from dry running due to long-term inadequate cleaning, and power supply short circuits caused by accumulated oil on static electrode plates. Regular cleaning per schedule prevents most of these problems.

The system estimates the remaining life of plates and filters based on cumulative operating hours to trigger maintenance alerts. It does not perform precise pollution level measurements.

When the filter is clogged, a maintenance alert appears on the touchscreen with reduced suction. The device will not automatically shut off; please clean or replace the filter as prompted.

Water filter system cleaning takes approximately 30 minutes. The electrostatic field process (disassembly, cleaning, drying, and reinstallation) takes about 2 hour(s).

Consumables include medium-efficiency and high-efficiency composite filters. Pricing is based on the quantity and specifications configured per model; a complete set typically ranges from 1300 to 2600 CNY, subject to the current price list.

When properly sized, installed according to specifications, and cleaned regularly, most projects can meet local commercial kitchen exhaust emission requirements. Compliance is an ongoing obligation; equipment must be maintained on a scheduled basis with documented cleaning records.

Provides CCEP environmental product certification, CMA third-party test reports, ISO system certifications, and certificates of conformity. Typically used for mall registration and environmental compliance documentation.

Check if equipment is operating normally, review cleaning and maintenance logs, verify effluent concentration compliance, and ensure no unauthorized modifications have been made. Retain cleaning records and inspection reports.

Common causes include reduced efficiency due to uncleaned oil buildup, adding new stoves or switching to high-oil cooking styles, duct leaks and poor sealing, and targeted re-inspections following neighbor complaints. Compliance requires ongoing maintenance.

If the device itself meets standards but fails due to improper installation, insufficient airflow, or inadequate cleaning, resolve by adjusting the configuration or upgrading to a higher-capacity model as specified in the contract.

The main difference lies in the materials: stainless steel plate thickness and weight, pure copper-wound motor, proprietary digital constant-voltage power supply, 1.0 mm seamless welded stainless steel body, and dry-pressed ceramic insulators. Based on a 5-8 year usage cycle, maintenance and replacement costs are significantly lower.

Select airflow based on burner count and grease concentration: single burner with light smoke 4000-6000 m³/h, double burners or Sichuan cuisine 8000-16000 m³/h, canteens and central kitchens 20000 m³/h or more. Quotes are calculated by model and configuration; submit operating conditions online to get a tailored solution.

Payment is typically made via deposit followed by the balance before shipment. Specific terms are subject to the contract.

Invoices are available. Please provide billing details at checkout.

Trade-in not yet supported. We can assess your old device's condition and provide recommendations for retrofitting or replacement.

Most equipment prices include shipping; remote areas and export orders exclude shipping unless otherwise specified in the quotation.

The overall equipment warranty is executed in accordance with the contract, ranging from 1 to 2 years depending on the product line. Core components (electric field, power supply, fan) can be replaced free of charge for non-human damage during the warranty period; spare parts are supplied at cost price after the warranty expires.

Service centers nationwide; most cities offer 24-48 hour on-site support, plus phone guidance and local technician visits.

Agents and service centers are available in major cities. Share your city at checkout to arrange local installation and after-sales support.

We are expanding our regional agent network. Partners with channels in building materials, catering equipment, or environmental protection equipment are invited to contact headquarters for discussions.

Designed service life: approximately 15 years. The stainless steel body is corrosion-resistant; under normal use and regular cleaning, the electric field and fan can last 5-8 years. The power supply and water pump are replaceable components.

Yes. Authorized dealers and service partners are available nationwide. Warranty coverage applies to all equipment purchased anywhere in China.

Two options: clean it yourself (we provide instructional videos) or hire a professional cleaning service. Local exhaust system cleaners are typically available near your store.

Recommended for heavy-油烟 scenarios like BBQ, Sichuan cuisine, and teppanyaki; also recommended for Chinese stir-fry. Generally not required for businesses with minimal oil fumes, such as bubble tea, light meals, and salads. The key factor is whether open flames or hot oil are used.

Yes. Heavy-oil models include front-end water spray pre-treatment to prevent overloading the electric field, making them suitable for stir-frying, grilling, deep-frying, and high-heat cooking. While heavy-oil scenarios require more frequent cleaning, normal operation is unaffected.

Yes. The all-in-one water circulation unit can be equipped with a stand and casters for easy mobility. Plug it in and use it immediately—ideal for night markets, open-air dining stalls, and temporary events.

Yes. Indoor circulation units are suitable for venues without chimneys and have been successfully deployed in mall dining areas and subway commercial projects.

We recommend high-airflow ducted models or MDY-Q self-cleaning units. Given the concentrated meal times and heavy grease load in cafeterias, self-cleaning models significantly reduce the burden of manual disassembly and cleaning.

Smoke and odors can be kept to a low level with adequate airflow, proper odor removal, and regular cleaning. However, insufficient airflow or failure to clean over time may still lead to complaints; we recommend identifying the root cause before determining a solution.

The number of burners, cooking methods, duct length, and maintenance conditions vary, leading to different test results. Do not copy configurations from other stores; select based on your specific operating conditions.

Voltage fluctuations can affect the stability of electric field discharge. Medea uses a closed-loop digital constant-voltage power supply that automatically compensates for fluctuations, offering superior stability compared to standard power supplies.

Normal fan noise should not exceed 65 dB. Popping or sparking sounds usually indicate oil buildup or foreign objects in the electric field; check water flow for pump anomalies; inspect mounting screws for resonance.

Available. We have successful deployments in school cafeterias, shopping malls, chain restaurants, and transit commercial spaces. Contact sales to request documentation.

The factory is located at 8 Xilong Road, Huangjiang Town, Dongguan City, Guangdong Province, with a building area of approximately 8000 square meters. A research and development center is also available; factory visits can be scheduled by appointment.

The unit does not include an integrated automatic fire suppression system. It is recommended to install a commercial kitchen fire suppression system in accordance with fire safety regulations.

The product is CE certified and complies with ISO quality and environmental management systems. CCEP environmental product certification and CMA test reports are also available upon request.

The electrostatic field is installed vertically. After oil and grease are captured, they fall into the lower tank by gravity. Since grease floats on the water surface, it can be easily removed during regular cleaning, reducing the risk of internal buildup.

Automatically alarms and shuts down in case of abnormal water levels, pump failure, or overheating. First, cut off power, then follow the touch screen prompts to check the water circuit and electric field. If the issue persists, contact after-sales support for remote assistance.