Applications
Industrial Hot Air Blowers
In the food and beverage industry, hot air tools are used for sterilizing and cleaning machines and devices, as well as roasting coffee and drying fruit. Chocolates and other sweets are enhanced by the use of hot air, thanks to their high level of controllability and precise temperature regulation. Leister air heaters enable safe process control for optimum protection of food.
In order to package consumer goods, cling films and packaging films made of polymers (for example PET, PE-HD and PE-LD) are frequently sealed with heat guns from Leister. Plastic containers are also formed and sealed with hot air. In the cosmetics industry, hot air is used for the production of tubes and composite cartons. In addition, goods and packaging can be dried with Leister hot air and plastic shrink tubes/sleeves, can be shrunk or shrunk on.
For Production Processes
Leister Hot Air Blowers
Leister’s MISTRAL 6 PREMIUM is equipped with a low-maintenance, brushless blower motor. MISTRAL 6 PREMIUM is available with a 36.5 mm (1.37 in) or 50 mm (1.97 in) tube diameter. The heating tube has a special diaphragm for an even airflow distribution and an optimized, aerodynamic airflow velocity. The practical mounting plates on the device ensure easy installation.
Thanks to its brushless motor, the HOTWIND SYSTEM is durable and requires very little maintenance. Air volume adjustment is continuously variable with the potentiometer up to 900 l/min or 31.78 cfm. The HOTWIND SYSTEM stands out through its application diversity: Remote control of air volume and heating output is possible thanks to an interface with alarm contact. An integrated temperature probe ensures additional precision. The digital display on the HOTWIND SYSTEM enables the ability for users to monitor the tools parameters.
The HOTWIND PREMIUM is particularly suited for continuous use as a hot air blower. Thanks to its quiet operation, brushless motor and integrated overheating protection, it can be used seamlessly in systems for continuous plastic processing. The air volume and heating output are infinitely variable and can be used for a range of applications, thanks to its high maximum temperature of 650°C (1202 °F).
The VULCAN SYSTEM hot air blower from Leister is a true powerhouse with an output of 10/11kW. The blower has a compact design, which can be easily integrated into industrial processes. Like the smaller hot air blowers from Leister, the VULCAN SYSTEM can also be remotely controlled with a standard analog interface.
For Production Processes
Leister Air Heaters
The integrated current and target values display enables precise output control. The hot air tool can also be remote-controlled via an electroplated separate 4 – 20 mA-interface or can be connected to a controller or PLC (Programmable Logic Controller). The air heater is available in 550 W or 770 W options and it reaches the maximum air temperature of 650 °C.
The compact LHS 15 PREMIUM air heater delivers up to 650 °C of hot air. Temperature adjustment is continuously variable with a potentiometer. It also comes with all the tested and proven features of the LHS air heaters: durable, powerful heating elements, reliable, integrated protective systems and precise hot air temperature control.
The small LHS 15 CLASSIC air heater is easily integrated in production lines and technical packaging systems. The electrically powered heater is featuring an overheating alarm protection system for the heating element and entire device. Additionally, it can be integrated into unmanned production and technical packaging systems with complete peace of mind. Thanks to its compact design, the hot air system is easily integrated into machines, units and devices from above.
The LHS 21S SYSTEM air heater features integrated power electronics, enabling continuously variable air temperature adjustment, which renders external power control (e.g. semiconductor relay) unnecessary. Regulation via a remote control is also an option with an electroplated separate 4 – 20 mA interface as a controller, PLC (Programmable Logic Controller) or external potentiometer. The integrated device and heating element cover offers reliable protection against damage to the air heater from excessively high temperatures.
The LHS 21L SYSTEM is a step further in the development of the tested and proven line of Leister air heaters for production processes: As with all SYSTEM process heating devices, the LHS 21L SYSTEM features direct connection to a PLC control system and offers system designers and production managers even better control and functionality. The system works in ambient temperatures up to 65 °C and the heating output adjustment is continuously variable up to 650 °C. This can be controlled by a PLC or stand-alone controller via a 4 – 20-mA signal or 0 – 10 V interface.
The LHS 21S PREMIUM shows that that Leister Technologies AG is also considered a market leader in industrial hot air applications worldwide. This highly developed air heater is characterized by its extremely small dimensions. At only 67 mm (2.65 in) in width, the LHS 21S premium is easily installed in machines and production lines with tight spaces. Durability, reliability and protection against heating element and device overheating makes the LHS 21S PREMIUM the optimum device for continuous use.
The LHS 21L PREMIUM air heater features an integrated, active device and heating element cover. An additional implemented alarm contact ensures high process safety warns of excess temperatures and the resulting failures. The heating power can be continuously adjusted via a rotary potentiometer. The air heater is perfectly suited for continuous operation and delivers continuously high output in industrial production processes with its associated external blower.
The LHS 21S CLASSIC is a further development of Leister air heaters and offers even more power than the LHS 15 line with a 1000 to 2000 watt capacity. This air heater’s compact size is remarkable at only 67 mm, while still offering immense durability and reliability. Leister quality standards ensure that the LHS 21S CLASSIC is robust and requires very little maintenance. This is reinforced with its alarm system that will detect if the heating element and device is overheating.
The LHS 21L CLASSIC was developed for special integration directly in production and machine systems for sterilizing, drying, welding, cleaning, shrinking, shaping, hardening, trimming and activation activities. With its compact housing and easy installation from above, the industrial air heater can be integrated quickly and easy in all types of production lines. With an output of 3.3 kW and a high maximum temperature, the unit is thus a universally applicable powerhouse.
The LHS 41S SYSTEM covers a broader spectrum of applications with its numerous analog and digital additional features compared to CLASSIC and PREMIUM products. The compact design and ability to attach a powerful external blower via air hose connection makes the air heater a perfect product for demanding production processes. The 50 mm (1.97 in) heating tube diameter also permits a particularly strong air flow, which allows more area to be processed simultaneously.
The LHS 41L SYSTEM air heater provides integrated power electronics for continuously variable adjustment of outgoing air temperature. In addition, there is also a remote power control option via an electroplated separate 4 – 20 mA or 0 – 10 V interface for external controllers, existing PLC systems or potentiometer. The integrated and patented heating element protection prevents the hot air device from overheating during operation.
With 2 kW to 3.6 kW capacity the LHS 41S PREMIUM air heater is a low-maintenance, reliable and powerful tool for various machines and systems. Like all PREMIUM devices from Leister it comes equipped with active device and heating element protection. An additional alarm contact ensures a highly safe process by immediately issuing a warning of any potential damage to the device.
With a capacity of up to 5.5 kW, Leister’s LHS 41L PREMIUM is a medium-sized air heater that has been tested in use thousands of times. The housing’s small dimensions and mounting plate facilitate its integration into the production process. With a heating pipe diameter of 50 mm , the LHS 41L PREMIUM also enables high air flow for applications with high requirements. At the same time, the heating power can be continuously adjusted via a red rotary potentiometer on top of the housing.
The medium-sized LHS 41 air heater series covers an extremely broad application range. With a capacity of 2 kW to 3.6 kW, these air heaters are even more powerful than the LHS-21 series. The small footprint, despite more powerful hot air capacity, enable integration in special production processes. The 50 mm heating tube diameter enables a particularly high air flow for applications with more requirements, making the hot air production process even more efficient.
Leister hot air systems are used in countless industrial production processes. The LHS 41L line was developed for particularly high demands, even in a 4.4 kW version, which provides twice as much capacity as the LHS 41S production line. As with all LHS CLASSIC products, the temperature cannot be regulated separately on the LHS 41L CLASSIC. However, the device is suited for easy, continuous use with consistently high heating output. All Leister LHS products are equipped with heating element protection, enabling use over long periods of time.
The LHS 61S SYSTEM is comprised of a two-component housing made of cast aluminum and polyamide, making it incredibly robust. It has integrated power electronics where the air temperature can be set continuously to up 650 °C. In addition, power control is possible via a galvanically separate 4-20 mA interface for controllers, SPS or external potentiometer. The heating element enables exceptional heat transfer and constant temperatures.
The LHS 61 air heater series is the first choice when high performance is required in applications. Alongside its optimized heating element design and traditional Leister quality, the patented heating element cover guarantees yet another increase to the service life of the heating element. The air outlet diameter of 92 mm allows high air volumes with up to 16kW of power. The LHS 61L SYSTEM allows a very simple control of the current and target temperature through an integrated temperature probe, integrated controller or interface.
Inline air heaters such as the LHS 61S PREMIUM are used for rapid air heating and specific hot air applications in industrial processes. Through the 62 mm wide heating tube, the device distributes hot air efficiently and is individually adjustable for respective requirements through various accessories and nozzles. Integrated power control allows easier installation, because fewer cables have to be laid. Not only does this reduce installation costs, but also reduces the risk of faulty connections.
The powerful LHS 61L PREMIUM air heater is easily integrated into industrial and commercial production lines with its 16kW-strong performance. The device is optimally suited for process heat in production lines and areas with individual temperature control. All LEISTER-LHS models have an overheating protection for the entire device and heating element. This can be connected to an external relay with the alarm output and thus ensure additional safety even in continuous operation.
The LHS 61 series is the first choice when high performance is required in applications. The air outlet diameter of 62 mm in the LHS 61S CLASSIC allows high air volumes with up to 9.0 kW output. The outgoing hot air can be heated quickly and accurately. This process heating tool is perfectly suited for processing packaging as well as for drying or sealing. Leister air heaters are industry leaders. This is because of their design, speed and constant temperature output.
Leister’s air heaters are specialized for use in applications with the highest hygiene requirements. The LHS 61L classic is suited for permanent operation without loss of power thanks to its 16kW of power and constant airflow. Leister’s inline heaters have been developed specifically for industrial process heat applications that require high temperatures and strong air flow.
With up to 40 kW, the LHS 91 SYSTEM is a high-performance air heater from Leister and a true hot air power package. It is used where large air volumes and high temperatures are required in continuous operation. With this output, the LHS 91 SYSTEM is able to replace gas heaters, thus increasing work safety and environmental friendliness. In addition, the LHS 91 SYSTEM can be individually adjusted to the respective requirements in industrial hot air systems, such as overlap nozzles, tubes and round nozzles, flange connections and extension tubes.
The LHS 210 SF (SF stands for Single Flange) is a small air heater from the Leister with a flange on one side. Due to its particularly compact design, it can be easily integrated into industrial plants with limited space. Connecting the power supply is also very easy thanks to the well thought-out design. The connection housing on the LHS 210 SF is located outside the air flow, which allows the air to flow through the air heater unhindered and with very little loss in pressure.
The LHS 210 SF-R (SF stands for Single Flange and the R stands for Recirculation) is a small air heater from the Leister with only one flange, which is capable of recycling hot air. Due to its particularly compact design, it can be easily integrated into industrial plants with limited space. Connecting the power supply is also very easy thanks to the well thought-out design.
The LHS 210 DF (DF stands for Double Flange) air heater is Leister’s smallest double flange air heater. Due to its particularly compact design, it can be easily integrated into industrial plants with limited space. The connection to the power supply is also very easy with this air heater due to its sophisticated design.
The LHS 210 DF-R air heater (DF stands for Double Flange, the R stands for Recirculation) is the smallest double flange air heater in the Leister range that’s able to recycle hot air. Due to its particularly compact design, it can be easily integrated into industrial plants with limited space. Connecting the power supply is also very easy due to its sophisticated design.
The LHS 410 SF (SF stands for Single Flange) is a compact air heater from Leister with only one flange. It offers an even higher air volume than the LHS 210 SF. Thanks to its small design, it can be easily integrated into various industrial processes with limited space. Connecting the power supply is also very easy due to the well thought-out design.
The LHS 410 SF-R (SF stands for Single Flange, the R stands for Recirculation) is a compact, hot air recyclable air heater from Leister with only one flange. It offers even higher air volume than the LHS 210 SF-R. Due to its compact design, it can be easily integrated into industrial processes where space is limited. Connecting the power supply is also very easy due to the well thought-out design.
The LHS 410 DF-R air heater (DF stands for Double Flange, the R stands for Recirculation) is a compact double flange air heater from Leister that recycles hot air with ease. It offers an even higher air volume than the LHS 210 DF-R. Due to its particularly small design, it can be easily integrated into industrial systems where space is limited. Connecting the power supply is also very easy thanks to the well thought-out design.
Compared to its predecessor, the LE 5000 DF-R is even more durable, works reliably and without any wear, even at an air inlet temperature of up to 350 °C / 662 °F and in ambient temperatures up to 200 °C or respectively 392 °F. This makes the device even better for integrating into air duct systems and heat recovery systems. The LE 5000 DF-R saves energy thanks to the difference between incoming and outgoing air temperature being kept low and the double flanges sealed assembly. Additional costs can be saved with the appropriate accessories, such as insulated hoses, temperature-resistant seals and efficient hot air recycling blowers (RBR).
High–temperature air heaters like the LE 5000 HT can be used for process heat applications up to temperatures of 900 °C / 1652 °F. The devices do not have any integrated power electronics. By using a solid state relay (SSR) and a controller (CSS or E5CC) and a thermocouple, the output can be controlled based on the air temperature.
The LE 5000 DF HT is even more powerful than its predecessors with a maximum airflow temperature of up to 900 °C (1652 °F). Air inlet temperatures up to 150 °C (302 °F) and ambient temperatures at 100 °C (212 °F) do not affect the double-flange device. Its compact size and easy mounting facilitate installation in existing or newly designed hot air systems.
The hot air sealing unit for liquid packaging include two different units: The LE 5000 HT-U air heater has the hot air outlet on the upper side, while the LE 5000 HT-S blows the hot air downwards. The air outlet openings are designed precisely for welding the longitudinal seam in liquid packaging. Thanks to the great thermal insulation on the units, the maximum amount of energy is implemented in the weld seam.
The latest generation of LE air heaters, with a double flange connection, are designed specifically for hot air recirculation systems. Depending on the air inlet and air outlet temperature, air efficiency is increased in the recirculation process. At a maximum air inlet temperature of 350 °C (662 °F), the LE 10000 DF-R and its recycling capabilities not only reduces costs, it also protects the environment.
The LE 10000 DF HT electric air heater can be used for temperatures up to 900 °C. The devices do not have integrated power electronics. Thanks to the well thought-out device design and the high quality workmanship, producing constant output without a large drop in pressure is a breeze. By using a solid state relay (SSR) and a controller (CSS or E5CC) and a thermocouple, the power can be controlled based on the air temperature.
The LE 10000 HT electric air heater can be used at temperatures up to 900°C. The devices do not have integrated power electronics. Constant output without a big drop in pressure is possible through the well thought out design and high-quality processing. By using a solid state relay (SSR), controller (CSS or E5CC) and a thermocouple, the power can be controlled based on the air temperature.
The high-performance LE 10000 DF-R HT air heater is a particularly economical air heater thanks to the hot air inflow of 350 °C and its maximum operating temperature of 900 °C. The well thought out design and the material selection at the inlet side allow these high air inlet temperatures. Thus, without major power loss, process heat can be generated efficiently and economically in a hot air recovery system. This saves energy, emissions and costs.
The electric heater, LE 10000 DF-C is referred to as a “clean air heater” integrated in air system with strict cleanliness is required. For example, food and beverage manufacturers, as well as medical, pharmaceutical, cosmetic or electronic products. The LE 10000 DF-C was developed on the basis of the latest standards for pure production, as they are from the European Hygienic Engineering & Design Group (EHEDG). Particle emissions are also minimized by its design, which is made exclusively from non-toxic materials.
LE MINI is a very small air heater with a heating tube diameter of 15 mm. The air heater is operated with compressed air up to 200 kPa (2 bar) and is well-suited for demanding work that requires ultimate precision. Suitable accessories are also available for this compact electric air heater: Flange connection, nozzle adapter, and suitable round, tubular and overlap nozzles or a sieve reflector. The LE MINI can be easily adapted to the respective requirements in the operation.
The LE MINI SENSOR is equipped with an integrated temperature probe and a thermal switch to protect the device and its heating element. The temperature can be read out via the analog and passive 4 – 20 mA standard interface. With a weight of 150 g, it is particularly light and extremely easy to install in tight spaces.
The LE MINI SENSOR KIT offers integrated power electronics and a temperature controller. This means that the hot air tool is the perfect plug and play solution. A heating element and device protection is integrated in order to prevent premature wear and tear. With the 400 W model, a maximum temperature of 600 °C is attainable, while the 800 W design has a maximum temperature of 750 °C. Thus, the LE MINI SENSOR KIT is suitable for high demands and for safe work with precise process heat methods.
For Production Processes
Leister Blowers
At 60 Hz, the medium-pressure ASO blower from Leister moves up to 561.5 cfm or 15900 l/min air. The housing is made from solid cast aluminum. With the appropriate accessories, multiple Leister air heaters can be supplied at the same time, making it ideal for use in production lines, for example in drying sequences.
The ROBUST blower from Leister is built in a compact size and still delivers high performance. Due to efficient sound damping, the ROBUST blower is very quiet at 62 dB(A), offers versatile installation in all positions in production lines and even under extreme operating conditions/continuous use. Various accessories are available for the ROBUST blower, from the air hose in three different diameters, to various hose connection adapters and more.
The AIRPACK high pressure blower is ideal for use in industrial assembly lines if large air quantities and high pressure are required. Thanks to the powerful blower, the AIRPACK can supply multiple air heaters with air at the same time. In addition, AIRPACK supplies enough pressure to efficiently supply Leister compressed air nozzles.
In spite of its compact dimensions, the MONO 6 SYSTEM blower continues to impress with its high air volume up to 600 l/min respectively 21.2 cfm. One of its new features is the ability to adjust the air volume, either on the device itself via the e-drive operating unit, or with an external controller through an interface. As a result, the blower can be adapted perfectly to suit any application. With its low-maintenance, brushless motor, the blower was made for continuous operation. The MONO 6 SYSTEM blower has an interface that allows external control.