Quanzhou Ausenist Technology Co., Ltd

Investigate YS820 E-21 overheating by checking load, airflow, ambient temperature, fan condition, carrier settings and installation environment.

Diagnose YS820 E-16 by checking motor data, pump blockage, operating point, acceleration, voltage, rotation and overload settings.

Compare variable-frequency drives and soft starters for starting current, continuous speed control, pressure regulation, cost and maintenance.

Understand how pump speed changes, check valves, valve closure and multi-pump staging affect water hammer and pressure surges.

Build distributor expertise with selection forms, application training, fault evidence, OEM options and accurate YS620/YS820 claims.

Evaluate a pump VFD factory by the quality of its selection, documentation, commissioning, troubleshooting, training and OEM change support.

Survey the motor, old starter, capacitors, sensors and hydraulic system before retrofitting a booster panel with YS620 or YS820 control.

Collect the alarm, voltage, current, frequency, pressure, sensor, motor and hydraulic evidence needed for effective remote pump-VFD support.