IWAKI EW Series User Manual (English)

Questions and Answers:

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Taylor KaiserAug 4, 2025
What to do if my IWAKI Water Pump does not start?
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  Lawrence DavilaAug 4, 2025
  If your IWAKI Water Pump doesn't start, there could be several reasons. First, check the wiring for faults or disconnections and correct it if needed. A lowered voltage could also be the cause; in that case, identify the source and raise the voltage to the specified level. Ensure the START/STOP key is pressed. Finally, if the electronic circuit of the control unit is damaged, the entire unit must be replaced, as components cannot be repaired.
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Caroline RobertsonAug 11, 2025
Why does the discharge amount fluctuate in my IWAKI Water Pump?
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  Brandy BrownAug 11, 2025
  If the discharge amount fluctuates in your IWAKI Water Pump, it could be due to a few reasons. The suction-side or discharge-side valve might be clogged with foreign matter, requiring you to disassemble, inspect, and clean it. Air trapped in the pump can also cause fluctuations, so bleed the pump. Overfeeding can be another cause, so install a check valve. Lastly, a damaged diaphragm can lead to fluctuations, and you would need to replace it.
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Samantha HarrisonAug 19, 2025
What to do if my IWAKI Water Pump leaks liquid?
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  samanthagonzalezAug 19, 2025
  If your IWAKI Water Pump is leaking liquid, ensure that the valve or connecting port is sufficiently tightened. If not, tighten the fittings. Also, check if the pump head is tightly fastened; if not, tighten the pump head bolts. A damaged diaphragm could also be the cause, requiring a replacement. Finally, verify that the O ring and valve gasket are installed; if not, install them.

IWAKI EW Series Specifications

General

Series	EW Series
O-ring	EPDM, FKM
Applications	Chemical Transfer, Semiconductor, Water Treatment
Frequency	50/60 Hz
Inlet/Outlet Connection	Flange
Seal	Magnetic drive, no mechanical seal
Type	Magnetic Drive Centrifugal Pump
Liquid Temperature Range	32°F to 176°F (0°C to 80°C)
Port Size	1/2" to 2" (depending on the model)