Frequently Asked Questions

Yes, filter screen material significantly impacts filtration effect. Different materials (PP, PE, nylon, stainless steel, PTFE) have varying pore structure, chemical compatibility, temperature resistance, and particle capture mechanisms. Material must match both fluid properties and filtration requirements.

Speed regulation methods significantly impact energy consumption: VFD (variable frequency drive) provides the best energy savings, reducing power proportionally to the cube of speed reduction. Damper control is less efficient as it wastes energy through restriction. VFD can save 20-50% energy at reduced loads.

Vertical pumps are suitable for: sumps and pits, underground storage tanks, wastewater lift stations, cooling towers, chemical tanks with limited floor space, deep well applications, and any installation where the liquid source is below ground level.

Cleaning cycle depends on: fluid contamination level, filtration precision rating, operating hours, and allowed pressure drop. Typical cycles range from daily for heavily contaminated fluids to monthly for clean applications. Monitor differential pressure to determine optimal timing.

For high-viscosity media: use larger pump sizing to compensate for reduced efficiency, select open or non-clog impeller designs, ensure suction piping is adequately sized to reduce inlet losses, operate at lower speeds, and verify motor has sufficient torque for viscous duty.

After long-term idling:
1) Inspect seals for drying or degradation,
2) Verify pump is primed (if self-priming),
3) Check for seized impeller from settled solids,
4) Lubricate if required,
5) Rotate shaft manually before startup,
6) Start at reduced speed if possible,
7) Monitor for unusual noise or vibration.