Teffiko screw pumps are widely used in chemical industry, sewage treatment, food slurry and other working conditions thanks to their stable conveying performance. However, even premium equipment requires standardized operation and maintenance. Proper maintenance of screw pumps directly determines service life, conveying efficiency and failure rate. Starting from the three core operational links of start‑up, operation and shutdown, this article provides clear maintenance cycles and definite answers to what oil should be filled into Teffiko screw pumps, helping users maintain the equipment and reduce unplanned downtime.

Ventilating air before centrifugal pump startup essentially removes air trapped inside the pump casing and suction pipe to build an effective vacuum at the impeller centre and prevent pump damage caused by air binding. From the perspective of on‑site commissioning and operation & maintenance, this paper explains the causes of air binding, standard priming and air‑venting procedures, and troubleshooting points.

Most pump body ruptures stem from dead-heading (closed-valve pressure buildup), erroneous remote start-up, and failures of automatic interlocks. This article addresses manual, remote, and automatic start/stop scenarios to explain valve verification, operating procedures, and instrumentation interlock maintenance, thereby preventing centrifugal pump overpressure rupture incidents.