Jack manufactures industrial sewing machines, including computerized lockstitch, overlock, and interlock models designed for the garment and textile industries.
Jack is a leading manufacturer of industrial sewing equipment, widely recognized for its high-speed and energy-efficient machines. The brand specializes in computerized direct-drive lockstitch, overlock, and interlock sewing machines that incorporate advanced automation features such as automatic thread trimming, foot lifting, and voice-guided operation panels.
Models like the Jack F4, A4, and A5 series are engineered for precision and durability, capable of handling a variety of fabrics from light to heavy weight. With a focus on innovation, Jack machines often feature bird's nest prevention technology and integrated servo motors to reduce noise and vibration, making them a staple in professional garment production facilities worldwide.
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If the control box shows an error like E5 or E7, or parameters are abnormal, press and hold the '-' button for 3 seconds while the panel shows 'P'. When the panel displays 'OK', the reset is successful.
On the operation panel, when 'P' is displayed, press the '+' button to increase speed or the '-' button to decrease speed. The new setting is saved automatically after 3 seconds.
It is recommended to use New Defrix Oil No. 10 (white oil). Fill the oil pan up to the HIGH mark (A) and refill if the level drops below the LOW mark (B).
Advanced models like the Jack A5E-WN feature a specialized bird's nest prevention mechanism. For other models, ensure the machine is threaded correctly and the thread tension is adjusted properly for the fabric weight.