Frequently Asked Questions

Causes: single phasing (lost one power phase), seized pump impeller, insufficient voltage, or motor winding damage. Solutions: check all three power phases, verify supply voltage, manually check if pump shaft rotates freely, and inspect motor windings with multimeter.

Causes: insufficient lubrication, over-greasing, misalignment, excessive load, or bearing wear. Solutions: check lubrication level and quality, verify proper alignment, inspect for excessive radial or axial loads, and replace bearings if worn or damaged.

Causes: fluctuating inlet pressure, unstable power supply, cavitation, impeller damage, or bearing wear. Solutions: stabilize suction conditions, check power supply quality, inspect impeller for damage, verify bearings are in good condition, and ensure pump operates within stable range.

Solutions: 1) Tighten flange bolts evenly, 2) Replace damaged or deteriorated gasket, 3) Check pipe alignment for stress on connection, 4) Ensure proper gasket material for the chemical, 5) If threaded connection, reseal with appropriate thread sealant.

Causes: pump operating off-design point (too low flow), bearing failure, misalignment, cavitation, or excessive discharge pressure. Solutions: verify system valve positions, check for clogged discharge line, inspect bearings, ensure proper flow through pump, and verify suction conditions.

Causes: lost prime, clogged suction line, air leak in suction pipe, impeller damaged or worn, suction lift too high, check valve stuck closed, or pump rotating in wrong direction. Solutions: reprime pump, inspect and clean suction strainer, check suction line for leaks, verify rotation direction.

Explosion-proof rating depends on the motor and configuration. Standard motors are non-explosion-proof. ATEX/IECEx compliant explosion-proof motors (Ex d IIB T4 or similar) are available as an option for hazardous area applications.

Anti-corrosion grades are generally divided by material: PP (general corrosion resistance - acids, bases, salts), PVDF (high corrosion resistance - strong acids, oxidizers, solvents), Stainless Steel 304/316 (moderate to high corrosion), and exotic alloys (extreme corrosion applications).

Electromagnetic Compatibility (EMC) standards followed include: IEC 61800 series for variable frequency drives, and relevant industrial EMC standards for emission and immunity. VFD-driven systems include appropriate filtering to meet EMC requirements.

Products are designed to meet relevant occupational health and safety standards including: proper guarding of moving parts, safe electrical systems, ergonomic maintenance access, and materials that do not pose health hazards under normal operating conditions.

Yes, our products meet internationally common electrical safety standards including IEC 60335, IEC 60034 for motors, and relevant low-voltage directive requirements. CE marking confirms compliance with EU electrical safety standards.

Electrical code compliance varies by country: IEC standards for most international markets, NEC for USA, and various national standards. Motors and electrical components are selected to meet the electrical codes of the target market.