How to Disassemble a Water-Cooled Fresh Air Fan? A Complete Guide to Selection and Maintenance of Kitchen Cooling Units for Snack Shops
How to Disassemble a Water-Cooled Fresh Air Fan? First, Understand Why It Has Become Essential for Snack Shop Kitchen Cooling
A water-cooled fresh air fan is a commercial ventilation and cooling device that uses the principle of water evaporation to absorb heat, cooling outdoor hot air before delivering it into the kitchen. Unlike traditional air conditioning, it does not rely on a compressor; instead, it uses a water curtain working in tandem with a fan to achieve simultaneous ventilation and cooling. For snack shop kitchens—environments with high heat, high humidity, and heavy grease—it is almost one of the most cost-effective cooling solutions available. However, many shop owners, after installation, when facing cleaning, relocation, or malfunction, immediately ask: how do you disassemble a water-cooled fresh air fan?
Disassembly is neither extremely difficult nor simple. If you force it apart without understanding the structure, at best you’ll damage the water curtain and motor; at worst, the entire unit becomes scrap. Below, from an industry education perspective, we’ll explain the disassembly logic, key selection points for snack shop kitchen cooling units, and daily maintenance all in one go.
How to Disassemble a Water-Cooled Fresh Air Fan? Four Steps—Don’t Skip Any
Step One: Cut Power and Water, Drain the Lines
Before disassembly, you must shut off the main power and unplug the control panel wiring terminals. At the same time, close the water inlet valve and drain the water tank and piping. This step prevents electric shock and water leakage—especially since snack shop kitchen floors are usually slippery, and standing water creates additional safety hazards.
Step Two: Remove the Water Curtain and Filter Screen
On most water-cooled fresh air fans, the side panels or top panels can be opened by manually unscrewing the bolts. After removing the outer filter screen, you’ll see the water curtain (wet curtain). The water curtain is typically slot-mounted—push it up gently and pull it outward to remove. If the water curtain has hardened, yellowed, or is caked with grease, it’s best to replace it directly rather than forcing a cleaning and continuing to use it.
Step Three: Separate the Fan Unit from the Housing
The fan unit is usually secured to the base frame with four bolts. After removing the bolts, two people are needed to slowly lift the unit out. Be careful not to pull on the motor cables or let the fan blades hit the housing. If the machine is mounted on a wall or roof, you must set up a support frame before disassembly to prevent it from falling.
Step Four: Clean the Base Pan and Drain Pipe
The base pan is where sludge and grease accumulate most easily. Remove the drain pipe and clean it with a high-pressure water gun or a soft-bristle brush. If the drain pipe is clogged, it will cause the water-cooled fresh air fan to leak or even burn out the motor. After cleaning, reassemble in reverse order, connect the water first for a test run, and confirm there are no leaks before restoring power.
If the brand you carry or use is LCCFAIR, its modular design makes disassembly and reassembly much easier—both the water curtain and motor support independent replacement without taking the whole unit apart. But regardless of brand, taking a few photos before disassembly to reference during reassembly can save you a lot of trouble.
How to Choose a Snack Shop Kitchen Cooling Unit? Don’t Just Look at Air Volume—Check These Three Points
Snack shop kitchen cooling units and water-cooled fresh air fans are often confused with each other, but they have different emphases. Cooling units focus more on output air temperature, while fresh air fans focus more on air exchange rate. For snack shops like fried skewer stands, malatang stalls, and steamed bun shops, the kitchen area typically doesn’t exceed 30 square meters, but stove density is high and the heat load is concentrated.
Point One: Check Whether Cooling Range Matches Air Exchange Rate
The cooling range of a water-cooled fresh air fan is generally 5 to 12 degrees Celsius, depending on ambient humidity and water curtain efficiency. If the kitchen itself has a high smoke exhaust volume, you must ensure the fresh air volume exceeds the exhaust volume; otherwise, negative pressure will form and cooling effectiveness will be greatly reduced. When selecting, an air exchange rate of 25 to 35 times per hour is recommended.
Point Two: Check Corrosion and Grease Resistance
Snack shop kitchens have heavy grease fumes, and ordinary galvanized steel housings may rust within six months. A good commercial kitchen air conditioner or water-cooled fresh air fan will have a powder-coated anti-corrosion housing, and the water curtain will have an added anti-grease coating. Brands like LCCFAIR that focus on commercial scenarios will reinforce sheet metal and motor protection specifically for food service environments.
Point Three: Check Whether Disassembly and Cleaning Are Convenient
This point is often overlooked but directly determines your later maintenance costs. If every cleaning requires disassembling the entire unit, shop owners simply won’t keep up with it for more than a few months. So when purchasing, be sure to ask: Can the water curtain be slid out? Can the base pan be removed separately? Are the motor connections quick-plug type? These details determine how difficult it is to disassemble a water-cooled fresh air fan.
Commercial Kitchen Air Conditioning and Water-Cooled Fresh Air Fans—How to Use Them Together
Many shop owners ask: I’ve installed a commercial kitchen air conditioner—do I still need a water-cooled fresh air fan? The answer is that the two complement each other and don’t conflict. Commercial kitchen air conditioning handles precise spot cooling, such as near the chef’s head and the stove area; the water-cooled fresh air fan handles overall ventilation and oxygen supply, cooling outdoor fresh air before delivering it inside.
If you only install air conditioning without fresh air, the kitchen will be stuffy, oxygen-deficient, and grease fumes won’t be exhausted; the AC compressor will also frequently shut down due to high temperature and pressure. If you only install a water-cooled fresh air fan without air conditioning, although the air quality improves, spot temperatures during extreme heat will still be too high. So a more reasonable approach is: water-cooled fresh air fan for baseline cooling and ventilation, commercial kitchen air conditioning for spot reinforcement.
For brand selection, you can pay attention to the industry’s top ten brands and manufacturers, but don’t just look at rankings. Check whether the manufacturer has case studies in food service scenarios and whether they can provide on-site air volume calculations and installation guidance. For how to disassemble and maintain a water-cooled fresh air fan, reputable manufacturers will provide video or illustrated instructions—this is more practical for snack shop owners than a spec sheet.
Do Daily Maintenance Right, and You’ll Halve Your Disassembly Frequency
Water-cooled fresh air fans don’t need frequent disassembly, but they do need regular maintenance. It’s recommended to clean the filter screen every two weeks, check the water curtain and water tank monthly, and clean the base pan and drain pipe quarterly. If your water is hard, consider installing a water softener or periodically running a descaling agent through the system.
Additionally, during long periods of non-use in winter, you must drain the water tank and piping to prevent freezing and cracking. Before restarting, manually rotate the fan blades to confirm there’s no jamming, then power on for a test run. These actions don’t take much time but can significantly extend equipment lifespan.
For snack shop kitchen cooling units, stability is more important than anything. Once the unit stops, the chef works under high heat, and both food output efficiency and food safety are affected. So choosing a brand like LCCFAIR that provides complete after-sales service and disassembly guidance is essentially reducing your own operational risk.
If you’re currently struggling with the heat in your snack shop kitchen, start by clarifying your exhaust volume, air exchange rate, and workstation layout, then decide how to disassemble, install, and configure your water-cooled fresh air fan. Get the cooling right, and summer in the kitchen will be a little more bearable.
