本文以英文原文提供。
文章目录
Describe the incoming wastewater
State whether the liquid is municipal sewage, industrial wastewater, stormwater or process drainage. Provide temperature, pH, solids size and concentration, fibre content, grease, abrasiveness and any chemical constituents that may affect materials or blockage risk.
Define the complete system head
Provide design, average and peak flow together with static lift, pipe sizes, route, fittings and discharge conditions. A single head figure without the system basis can hide friction changes and parallel-pump interactions. Include the wet-well operating levels and the minimum submergence.
Confirm installation and controls
Identify wet or dry installation, guide-rail arrangement, access, lifting equipment, power supply, start method, level control, alarms and duty/standby philosophy. Hazardous-area or explosion-protection requirements must be stated explicitly and verified for the proposed motor and complete installation.
Plan service access before ordering
Consider how the pump will be isolated, lifted, inspected and returned to duty. For an existing unit, send its full type designation, serial number, nameplate and photographs. DFIN can then organize a pump or parts enquiry around the installed build and required service scope.
Prepared by the DFIN editorial team as practical identification, selection and maintenance guidance. Confirm the exact product configuration and service procedure before ordering or maintenance.