Choose a TEFC induction motor rated for continuous duty (S1) with thermal overload protection, then match voltage, phase and starting current to the site supply. On a direct driven air compressor the motor speed fixes the compressor output, so the motor decision is permanent.
Nhiệt độ khí xả của oil-free air compressor tăng cao trong thời tiết nóng thường do khí nóng thải bị hút tuần hoàn trở lại cửa gió làm mát trong phòng máy kín, chứ không phải do máy hỏng. Xử lý gốc là dẫn khí nóng ra ngoài, cấp khí mát sạch từ phía đối diện, rồi mới kiểm tra aftercooler, lọc gió và quạt.
In most hot-weather cases, high oil-free compressor discharge temperature is caused by the machine re-ingesting its own heated cooling air — a ventilation and installation problem, not a failed component. Compare intake air temperature with outdoor ambient to confirm it in minutes.
Una turbina de alta velocidad consume típicamente entre 30 y 50 NL/min y una jeringa de aire/agua entre 10 y 20 NL/min, por lo que un puesto dental en uso simultáneo demanda alrededor de 50–70 NL/min a 5–6 bar en la línea. Ese caudal, más un margen de reserva, es el dato que define la clase de motor eléctrico del dental compressor.
Untuk booth powder coating manual dengan 1–2 spray gun, kompresor direct driven 3–5 HP berkapasitas sekitar 12–20 CFM pada 90–100 PSI umumnya memadai, ditambah margin 25–30% dan tangki minimal 150 liter. Kuncinya adalah total CFM seluruh titik pakai, bukan angka HP saja.
For a single manual powder coating or paint booth, size the compressor at roughly 15–25 CFM FAD at 90–120 psi, with a 60–80 gallon receiver and a refrigerated dryer — then verify the unit’s duty rating against your running hours.
Para una cabina manual de powder coating, el oil-free air compressor se dimensiona por el consumo en CFM de las pistolas que trabajan a la vez, con un margen del 25–50% y una presión ajustada a la pistola; el tanque y el tipo de compresor dependen del ciclo de trabajo.
Size a coating booth compressor by adding the simultaneous CFM of every air consumer and then adding 30–50% headroom. A single manual booth usually lands at 15–25 CFM at 90–110 PSI, and the air must be oil-free and dried to protect finish quality.
انسداد aftercooler يمنع تبريد الهواء المضغوط قبل دخوله خطوط العيادة، فيتكثّف بخار الماء داخل الأنابيب بدلًا من التصرّف في مصيدة المكثفات. يوضح هذا الدليل كيف تفرّق بين انسداد المبرد اللاحق ومشكلة dryer، وما خطأ التركيب الشائع، ومتى تستبدل aftercooler.
Water carryover at the dental chair is usually a heat problem, not a drain problem: a clogged aftercooler lets hot, moisture-laden air reach the refrigerated dryer, which then cannot reach its pressure dew point. Clean the cooler core, restore airflow through the fins, and the downstream drying chain works again.