NAKAYAMA PRO NP2120 Electronic Controller Instruction Manual

NAKAYAMA PRO NP2120 Electronic Controller

Product Information

Specifications

• Model: NP2120
• Voltage/frequency : 230V / 50Hz
• Rated power : 1100W
• Max. height : 45m
• Max. suction height : 8m
• Max. conveying amount : 4600 L/h

Product Usage Instructions

• Safety Instructions
  • Before starting the equipment, read through the instructions for use. Failure to follow the instructions may result in electric shock, fire, or serious injury. Keep the instructions in a safe place and do not allow children or inexperienced individuals to operate the equipment.
• Intended Use
  • This pump is designed for watering parks, vegetable fields, gardens, lawns, and drawing water from ponds, streams, waterfalls, and wells. Do not use the pump for pumping corrosive, abrasive, flammable, gaseous, or explosive substances.
• Before Operation
  • Use pre-filters and water purification equipment with inlet hoses to avoid maintenance issues and damage to the pump.
• Operation
  • When the indicator lights show different statuses, follow the corresponding actions as described in the manual. Ensure proper cooling of the water pump.
• Maintenance
  • Perform maintenance tasks as recommended in the manual. If there are blockages, follow the instructions to clear them. Replace the main cable if damaged by contacting the manufacturer or relevant technical personnel.
• Troubleshooting
  • Refer to the troubleshooting table in the manual for solutions to common issues like power supply interruptions, defective power lines or plugs, mechanical seal suction, pressure switch issues, and faucet installation height problems.

FAQ

• Q: Can this pump be used for pumping corrosive fluids?
  • A : No, the pump should not be used for pumping corrosive fluids such as acids, alkalis, or abrasive substances like sand.

SAFETY INSTRUCTIONS

WARNING! READ THROUGH THE INSTRUCTIONS FOR USE BEFORE STARTING UP THE EQUIPMENT. Failure to follow all instructions listed below may result in electric shock, fire, and /or serious personal injury. Persons, who are not familiar with the instructions, may not operate the equipment. Keep the instructions for use in safe custody. Children and youths are not permitted to operate the equipment.

• Do not use the pump when there is someone in the water.
• The pump must be connected with a current-type leakage current breaker which carries a rated leakage current of no more than 30 MA.
• The device is suitable for children at eight or older. People with sensory or physical disabilities or deficiencies are required to use under supervision or knowledge of safety, use, and danger. It is forbidden for children to use water pumps for play. Children are not allowed to wash or maintain equipment without supervision.
• If the power line is damaged, it must be replaced by the manufacturer, the agent, or the relevant technical personnel to avoid any danger.
• Please contact technical staff.
• Please check the equipment before use. Do not use any electrical appliances if safety equipment is damaged or worn. It is forbidden to use safety devices.
• The equipment shall be used only for purposes specified in this instruction.
• You are responsible for the safety within the working area of the equipment.
• The power supply voltage shall conform to the AC voltage specified on the nameplate.
• It is forbidden to use a power cord to move, transport, or fix the water pump.
• Ensure the equipment free of the risk of water and humidity.
• Before any maintenance or repair is performed on the pump, you must always pull the plug out of the socket.
• It is forbidden to connect the water pump with direct flow.
• Equipment operators shall be responsible for any safety and installation-related matters (consult with professional personnel).
• Take proper measures to avoid any indirect damages like water soaking that may cause water pump errors (e.g., alarm systems, standby pumps etc.).
• If the water pump breaks down, any maintenance can only be performed by professional personnel.
• It is forbidden for dry running and operation when the water pump is energized. Because the damage caused by dry running is not covered by the warranty.
• The water pump must not be used in swimming pools.
• During continuous operation, the maximum temperature of the liquid in the pump shall not be higher than 35°C.
• The pump shall also not be used for pumping corrosive fluids (acids, alkalis, seepage, etc.) and abrasive substances (sand).
• The pump shall not be used for pumping flammable, gaseous or explosive substances. Substances that can be extracted are clean water and rain water.

Intended use

This pump is designed for watering parks, vegetable fields, gardens, and lawns, working with pre-filters, and for drawing water from ponds, streams, waterfalls, and wells.

SPECIFICATIONS

Technical Data

Model: NP2120
Voltage/frequency: 230V / 50Hz
Rated power: 1100W
Max. height: 45m
Max. suction height: 8m
Max. conveying amount: 4600 L/h

• The manufacturer reserves the right to make minor changes to product design and technical specifications without prior notice unless these changes significantly affect the performance and safety of the products. The parts described/illustrated in the pages of the manual that you hold in your hands may also concern other models of the manufacturer’s product line with similar features and may not be included in the product you just acquired.
• To ensure the safety and reliability of the product and the warranty validity, all repair, inspection, repair or replacement work, including maintenance and special adjustments, must only be carried out by technicians of the authorized service department of the manufacturer.
• Always use the product with the supplied equipment. Operation of the product with non-provided equipment may cause malfunctions or even serious injury or death. The manufacturer and the importer shall not be liable for injuries and damages resulting from the men anon conforming sautinmont

BEFORE OPERATION

We suggest using the pump with pre-filters and water purification equipment with inlet hoses to avoid prolonged maintenance on the check valve and other unnecessary damage.

Electrical connections

• There are reliable ground connections for power supply which is connected with a leakage current protection switch with a maximum leakage current of 30mA.
• The pump should be switched on and off by touching the ON/OFF button.
• The pump comes with a thermal overload protector. In the case of overheating, the thermal overload protector will automatically turn off the pump. After cooling, the water pump will restart automatically.

Preparation

• It is possible to place the pump on a level solid ground or fix the pump to the ground.
• Connect the suction pipe.
• Install suction pipe. When necessary, please wrap teflon PTFE tape on the threads, to prevent air leaks at the joint.

Tips

• In order to shorten the time of sucking water, it is recommended to fill the suction pipe with water before connecting to the pump.
• If the transport substance contains sand in water, we strongly recommend installing pre-filters so as to prevent access of foreign matter. The inlet pipe’s diameter shall be at least 3/4″, and the pipe shall be a vacuum-proof hose with reinforced threads or a pressure-proof tube.
• The inlet pipe shall be provided with a water inlet valve to prevent the evacuation of the suction pipe after use.
• If the inlet pipe is not sealed, the air in the pipe will block the flow.
• The intake should be immersed enough in water to prevent the water pump from being stopped without water flow when the water level drops. The installation of the inlet pipe and pressure pipe shall avoid any mechanical twisting of the pump.
• The inlet pipe shall be connected to the pump underwater. The pipeline shall not be higher than the pump. Otherwise, bubbles in the pipe will block the flow.
• Connect the pressure pipe.
• The pressure pipe shall be able to bear the maximum pressure of the pump.
• 1/2″ pressure hose can also be connected with the appropriate bolts, but it will reduce the output flow.
• In order to shorten the suction time, raise the pressure hose by about 1m.
• Any slight unsealing will lead to error, so it is recommended to install a pressure balance component (e.g. a pressure tank) at the pressure side, which will reduce the number of starting the pump.
• In order to simplify the emptying and decompression of the system, it is recommended to install a stop switch between the pump and the pressure pipeline. When emptying the pump, the stop switch could be switched off to prevent water from overflowing in the pressure pipeline.
• Insert power supply.
• All the shut-off devices (jet nozzles, valves, etc.) on the pressure pipe must be fully turned on during water injection and suction so that the air in the pipe can completely escape.
• Add water to the water inlet of the pump head and fill it up until it overflows.
• Screw the valve cover over the water inlet and screw it tight.

OPERATION

• Plug in the power plug.
• Power on through turning ON/OFF. (If there are not turn on /off on some pumps, plug in to switch on the power supply, without affecting the function).
• Press the “Restart” key on the electronic pressure switch panel with your fingers and then the pump starts to work and pump water.

After finishing work

• Turn off the pump by turning on / off. (if there is no turn on/off key on some pumps, then unplug the plug to turn off the pump directly, without affecting
  the function).

• Unplug the plug from the socket.

• Check if there is pressure at the pressure side. In case of pressure, relieve pressure by turning on the faucet.

DESCRIPTION OF LED INDICATOR LIGHTS

No indicator lights up

It means that no electricity is in the line.

Indicator light “Power on” is on

It means that there is power in the line, but the pump is not working. Press the “Reset” button to turn on the pump. It is also possible that the pump is in a constant pressure shutdown status. When the pressure at the pressure side line is lower than the starting pressure, the pump will automatically start pumping water.

The indicator light “Power on” is on, and the “Pump on” lights up It means that the pump is pumping in normal operation.

The indicator light “Power on” is on; The “Pump on” lights up and the “Failure” lights up

It means that the pump is pumping at work, but there is no water flow in the pipe. If it lasts for 30 seconds without water, the pump will come into shutdown mode.

The indicator light “Power on” is on ; The “Failure” indicator lights up

It means that there is a fault and the pump has stopped working. This may be caused by no water, leakage in water inlet pipe or damage of pump parts.

MAINTENANCE

• Warning : Please turn off the pump and remove the plug from the socket before any maintenance procedures are carried out. Risk of electric shock.
• In order to guarantee a longer service life, we recommend regular inspection and maintenance.
• If the water pump is out of use for a long time or is used after a winter, please clean the pump thoroughly with water and dry it up.
• If there is a risk of frost, the pump must be completely emptied.
• After the pump is not working for a long time, make sure the rotor is running normally when the pump is turned on and off.
• If the water pump is blocked, connect the pressure pipe to the water pipe and remove the suction hose. Turn on the water supply and start the pump several times for about 2 seconds. Most blocks can be removed.

Replacing the mains cable

If the power line is damaged, it must be replaced by the manufacturer, the agent or the relevant technical personnel to avoid any danger.

TROUBLESHOOTING

In most cases, you will be able to troubleshoot problems easily by yourself.

Before any attempt to repair the device, ensure that the device is turned off and that the plug is removed from the socket.

If you are unable to remove the faults, please contact with the local suppliers directly. Please remember that the repairing of laypeople will invalidate your warranty and claims for compensation and give rise to extra costs.

Attention : To avoid damage and to minimize the risk of electrocution, electrical problems must only be repaired by authorized repair personnel.

ENVIRONMENTAL DISPOSAL

In order to avoid damages on transportation, the tool has to be delivered in solid packaging. Packaging as well as the unit and accessories are made of recyclable materials and can be disposed of accordingly. The tool’s plastic components are marked according to their material, which makes it possible to remove environmentally friendly and differentiated because of available collection facilities.

Only for EU countries

Do not dispose of electric tools together with household waste material! In observance of European Directive 2002/96/EC on waste electrical and electronic equipment and its implementation in accordance with national law, electric tools that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility.

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