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Humans tend to make mistakes. One unfortunate mistake when choosing an air curtain can remind you of itself in the future with drafts, temperature imbalance, excessive noise and irrational energy costs. It turns out that when choosing a thermal curtain, the lion’s share of potential buyers step on the same rake. To avoid this, all you need to do is read this text.
TOP 5 misses
Air curtain disassembled (video)
TOP 3 causes of air curtain breakage
1. Ignoring the indicator of the height of the opening
The first place in the list is occupied by an incorrect calculation of the length of the opening (or height, if the installation is supposed to be vertical). In this case, cold air from the street can enter the room from the left or right (from above or below, respectively). To avoid this, choose a curtain equal to the width of the opening or with a margin — a little wider. The typical length of the air curtain unit is 0.8 to 2 m.aboutgreater width, the curtains are mounted in a row at a minimum distance from each other. The closer the curtains are, the higher the final efficiency of the thermal equipment will be.
3. Wrong choice of energy source
Wrong choice of equipment according to the source of energy consumed. Sometimes, in order to save energy costs, buyers choose a water air curtain, or vice versa, based on ease of installation, they choose an electric one. Remember that equipment can consume up to 48 kW, and your electrical network must be designed for such loads. In the case of choosing a water curtain, consider the availability of water and its pressure.
5. Invalid advanced options
Last but not least on our list are errors related to advanced options. The noise level from the equipment can be critical for catering establishments. Special housing and parts protection may be required for air curtains in places with aggressive environment, such as car washes, etc.
2. Performance mismatch
Wrong choice of equipment for performance. It is important to understand that the efficiency of the air-thermal curtain is not determined by the temperature of the air blown out by the device, but by the strength and speed of the air flow. This is called curtain performance. Therefore, the higher the doorway, the more productive the equipment is needed.
4. Wrong calculation of power
Unreasonable choice of equipment power. Power is a measure of the temperature of the air blown out by the fan. The main thing in determining the required power is to adequately assess the characteristics of the doorway, the frequency of opening doors or gates, the presence of indoor heating, etc. Remember that even the most powerful air curtain blows warm, but not hot air, so you should not choose a curtain for the purpose of heating the room.
Related video: disassembled air curtain
A few words about reliability and repair
Like any other equipment, air curtains can fail if used incorrectly. A malfunction requiring repair may manifest itself in a decrease in the power of the equipment, the appearance of extraneous noise and vibration on the case, a decrease in the speed of the air flow and a decrease in its temperature, the appearance of streaks, etc. This may be due to a breakdown of the main components and assemblies of the air curtain — a fan and a heat exchanger, as well as individual heating elements or equipment control systems.
Many factors influence the correct choice of an air curtain: from the parameters of the room and the doorway to the available power sources, therefore, for the most suitable and efficient equipment for your conditions, it is better to turn to professionals who will select the best solution.
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In some cases, the repair of thermal curtains consists in replacing elements. However, only a master can make a diagnosis and find the true cause, so you should not disassemble and repair the device yourself, especially if it is under warranty.
To prevent breakdowns of thermal curtains, maintenance should be carried out regularly. Before starting, inspect the machine to avoid the ingress of dirt and foreign objects.
Water quality is important for a water thermal curtain. Before entering the water curtain heat exchanger there is a filter that collects all the dirt. In order for the equipment to serve for a long time, it must be cleaned regularly.
An important role is played by the condition of the wiring — power cables, switches, and control lines that need to be inspected periodically.
Top 3 main causes of air curtain breakdowns:
the air curtain is incorrectly selected, the thermal power is illiterately calculated, due to which the heat exchanger failed (this is especially true for water curtains);
equipment is out of service.
If air curtains are stale in warehouses, then these are almost always models of the “mini” and “midi” categories. They are purchased by dealers in bulk at the beginning of the season and, if demand is lower than expected (due to, for example, weather conditions), they remain unclaimed. Models from the “maxi” and “supermaxi” categories in most cases are intended for end customers and for real projects, so they are less likely to end up in surplus.
Thermal curtains: all models