Extruder Maintenance Rules

Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with over 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, PVC-O pipe extrusion line, RTP pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.

A Science Guide from Ningbo Fangli Technology Co., Ltd.

A. The equipment should always be kept clean and well lubricated. Perform routine wiping and lubrication, and keep the surrounding environment clean.

B. Regularly check the lubricating oil level in each gearbox, whether the cooling water flows freely, and the lubrication condition of all rotating parts. If any abnormality is found, handle it promptly or report it to the responsible personnel (gear oil should be added to the reduction gearbox and distribution gearbox; heat transfer oil should be added to the cooling machine housing).

C. Regularly inspect the seals and leakage of filters and joints in all pipelines, and protect the cooling pipes properly.

D. Raw materials in the hopper must be clean and free of impurities. Metal contamination is strictly prohibited to ensure that the barrel and screw are not damaged. When feeding, check whether a magnetic rack is present in the hopper; if not, install one immediately. Regularly inspect and clean metal debris attached to the magnetic rack.

E. The machine must generally not be run empty, to avoid friction and scratching between the screw and barrel or seizing between screws.

F. After each production run, immediately clean residual raw materials and easily degradable stagnant material from the mold and barrel. If the machine will be idle for a period of time, apply anti-rust oil to the surfaces of the screw, gearbox, and mold flow channels, and inject anti-rust agent into the water pump and vacuum pump.

G. In the event of a power interruption, all potentiometers must be reset to zero, and the drive and heating must be stopped. After the voltage returns to normal, the machine must be reheated to the set value and held at temperature (for some products, the mold must be removed first) before starting. This prevents damage to the equipment from cold starting.

H. The auxiliary water pump and vacuum pump should be maintained regularly. Promptly clean clogged nozzles in the water tank (trough) and replace damaged sealing strips on the calibration tank cover. The screw bearing requires regular grease lubrication to prevent rust.

J. Regularly drain accumulated water from the air source FRL unit (filter-regulator-lubricator).

K.Promptly carry out locking inspections of all fasteners on the machine, such as the tightening screws of heating rings, wiring terminals, haul-off clamps, cutting machine fixtures, and external guard components.

If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.