Can you recommend a sales agent?
For details on agents worldwide, please visit the overseas agent information page.
If you have any questions, please feel free to contact our overseas department.
Is continuous operation possible?
Continuous operation is possible, but the equipment must be used under appropriate operating conditions. Regular maintenance is required. For more details, please refer to the instruction manual or contact the nearest branch or sales office.
What does minimum water level for continuous operation refer to?
The minimum water level for continuous operation refers to the minimum water level required to operate the pump stably for extended periods. If the water level drops below this point, it may cause motor burnout, dry running of the pump, or cavitation. The minimum water level for continuous operation varies by model, so please check the specifications or instruction manual.
What does minimum effective suction height refer to?
The minimum effective suction height refers to the minimum suction height required for the pump to function properly. If the water level drops below this point, it may cause dry running of the pump or cavitation. The minimum effective suction height varies by model, so please check the specifications or instruction manual.
What factors should be considered when storing products?
For storage, avoid high-temperature and humid areas to preserve motor insulation, and select a well-ventilated location.
Please measure the motor’s insulation resistance (including the cable insulation resistance) with a megger every three months to check for any abnormalities.
If the insulation resistance measurement falls to 1 MΩ, refrain from using the product and inspect the cables and motor.
What should be checked before using the product?
Before using the product, measure the motor’s insulation resistance with an insulation resistance tester (megger) and confirm that there are no abnormalities. If the measurement result is below 1 MΩ, refrain from using the product and inspect the cables and motor. For detailed inspection methods, please refer to the instruction manual or contact your nearest branch or sales office.
Is inverter operation possible?
Inverter operation is possible by modifying the motor specifications, with the exception of certain products. For more details, please feel free to contact your nearest branch or sales office.
Can products be modified for enhanced corrosion and wear resistance?
We are able to propose the optimal material based on the situation.
For more details, please contact your nearest branch or sales office.
Is it possible to handle transfer liquids at 100°C?
Certain models are capable of handling liquids at 100°C.
For detailed specifications or any requests, please feel free to contact us.
Is it possible to handle transfer liquids at 80°C?
Our products are capable of handling transfer liquid temperatures up to 80°C (up to 70°C only for three-phase 1.5 kW and above, and 2-pole 0.75 kW).
The following models are not compatible.
Additionally, certain models are capable of handling temperatures up to 100°C.
For detailed specifications or any requests, please feel free to contact us.
Is customization possible?
Yes, customizations such as making changes to the materials and structures are available to suit your usage environment. For more details, please feel free to contact your nearest branch.
How do I read the model number?
For information on how to read the model number on the products page, please check the detailed page of the relevant model by using the free word search.
If you have any questions, please feel free to contact our local distributors or EIM overseas department.
What pumps are available for different applications?
We manufacture a wide variety of pump models. Please take a look at our delivery record.
What could cause low water discharge?
The main causes of low water discharge may include the following:
Please check these points and carry out inspections or repairs as needed. For more details, please contact your nearest branch or sales office.
There is an unusual noise coming from the pump. What could be the cause?
The main causes of unusual noise are as follows:
In either case, prompt inspection and repair are required. For detailed diagnostics and repairs, please contact your nearest branch or sales office.
Overcurrent has occurred. What could be the possible causes?
The main causes of overcurrent are as follows:
Please check these points and perform inspections or repairs as needed. For specific actions, please contact your nearest branch or sales office.
What should be checked if the pump is not operating or not lifting water?
If the pump is not operating, please check the following points.
1. Check the power supply
1-1.Check if the power switch is turned on.
1-2.Confirm that the breaker has not tripped.
1-3.Check if the power supply voltage is within the specified range.
2.Check the wiring and connections
2-1.Check if the wiring is properly connected and ensure that there are no disconnections or poor contacts.
2-2.Confirm that there are no loose terminals.
3.Check the control panel and protection devices
3-1.Confirm that there are no errors with the control panel settings.
3-2.Confirm that the overload protection device or thermal relay has not been triggered.
3-3.Confirm that the stop button has not been pressed.
4.Check the piping
4-1.Confirm that there are no blockage or foreign matters in the suction inlet.
4-2.For surface pumps, confirm that the suction valve is not in a closed position.
4-3.Confirm that the pump is not running dry.
4-4.Check if the discharge valve is open.
4-5.Check for any blockages or pressure abnormalities in the piping.
4-6.Confirm that there are no air pockets in the piping.
6.Check the pump body
6-1.Confirm that the impeller has not seized due to foreign matters.
6-2.Confirm that there are no abnormalities in the bearings or seal components.
6-3.Confirm that no cables are disconnected.
6-4.Check if the pump’s rotation direction is correct (especially for three-phase pumps).
6-5.For products with protection devices, the protection device may have activated due to motor overheating or an abnormal current.
6-6.Confirm that there is no voltage drop.
7.Check the surrounding environment
7-1.Check if the installation environment is appropriate (e.g., no excessive temperature, vibration, etc.).
7-2.Check if the operating procedures are being followed correctly.
I would like to update the existing equipment. What steps should I take?
If you wish to update the equipment, please check the product number listed on the nameplate of the existing pump.
Based on that information, please consult with your nearest branch or contact, and we will guide you to the appropriate solution.
Please provide guidance on how to maintain the product.
1.Daily inspection (before and after use)
1-1.Check for any abnormal vibrations or noises.
1-2.Inspect for any leaks in the piping or connections.
1-3.Confirm that there are no abnormalities in the discharge pressure.
2. Regular inspection (based on operating hours and usage frequency)
2-1.Measure the motor’s insulation resistance with an insulation resistance tester (megger) and check for any abnormalities.
(If the insulation resistance is below 1 MΩ, maintenance is recommended.)
2-2.Check for wear or abnormal noise in the bearing components, and perform an overhaul if necessary.
2-3.Turn the impeller by hand and check for any accumulation of foreign matter or scale.
What is the recommended frequency for regular pump maintenance?
1. Daily inspection (performed daily or after each operation)
Check for any abnormal vibrations or noises.
Check the suction and discharge pressure.
Check for leaks in the piping and connections.
2. Regular inspection (every 3 to 6 months)
Measure the motor’s insulation resistance (maintenance is recommended if below 1 MΩ).
Check for abnormal noises or vibrations, and change the oil if necessary.
Turn the impeller by hand and check for any accumulation of foreign matter or scale.
3. Overhaul (every 1 to 2 years)
Disassemble and inspect the pump (check for wear on the impeller, shaft, and seals).
Replace worn parts (gaskets, O-rings, bearings, etc.).
Perform a comprehensive operation check and performance evaluation.
In harsh operating environments (such as high temperatures, high pressures, or when transferring corrosive liquids), it is recommended to conduct inspections at shorter intervals.