NAKAYAMA NP1180 Submersible Pump User Manual

: June 3, 2024
: NAKAYAMA

Table of Contents

Safety Instructions
Operating Instructions/Installation
Cleaning
Storage
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NP1180 Submersible Pump
User Manual NP1180
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Safety Instructions

All electrical sockets must be earthed.
No power cord should be used for transporting or fixing the equipment.
Don’t pull the power cord on the sharp edge and don’t press the power cord.
The power supply voltage must be the same as the voltage given on the model board.
To avoid hazards, all installation and replacement of components can only be carried out by authorized customer service personnel.
Electrical connections can only be performed by electrical professionals, and please comply with state regulations for this.
The pump must be connected with a current type leakage current breaker which carry a rated leakage current of no more than 30 MA.
Check the connection of the plug before running. If the wire is damaged, it must be replaced by the manufacturer, the agent or the relevant technical personnel to avoid any danger.
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.
Children are not allowed to wash or maintain equipment without supervision.
Liquid contamination may be caused by leakage of lubricating oil.
The water pump can be connected with a shock proof plug installed in accordance with the regulations.
Do not use pumps when there is someone in the water.
When cleaning and maintaining, please disconnect the water pump from the main power supply.
Please contact technical staff .
Connectors for power plugs and extension cables must be made sure that they are watertight and must not be placed in the water. Furthermore, connec- tors cannot be placed on the ground. It is recommended to ensure that the outlet is at least 60 mm from the ground.

WARNING!
None follow of the safety tips will have the life risk brought by the current!
Danger type and source:
None follow of the safety tips will have the life risk brought by the current!
Do not repair the power cord if there is any external damage to the power cord or plug.

Operating Instructions/Installation

Pumps have automatic functions of multiple modes.

When the outlet valve is closed, the pump enters the state of holding pressure and standby. The pump is in a stop state at this time, but there is pressure in the pipeline. The pump will automatically open the pump after releasing the pressure of the pipeline when the outlet valve is opened.
When the water is not enough, the pump can not be pumped out again. The pump will enter the dry operation protection mode. The pump is stopped at present. The pump will open only when the power is reconnected.
When there is a small leakage in the pipeline, causing the machine to open frequently, the pump will enter protection mode. The pump is stopped at present. The pump will open only when the power is reconnected.

Before operation
Please check the following before the pump is turned on:

The pipeline is fitted with a metal tube or pressure hose that can withstand pressure.
The joints on the pipe are sealed reliably.
The pump is firmly fixed.
The diving depth of the pump should not exceed the nominal maximum of the technical parameters.
All electrical connections are in compliance with safety instructions.
Open the outlet valve.

Attention!
For rope handling: Do not operate the pump without the pressure hose to prevent the pump from twisting around its longitudinal axis. In continuous use of a pump with a rope, the condition of the rope must be checked periodically, as it may break with increasing use time.
Long enough and strong ropes should be attached to the handle before the first use. When the pump is immersed into the liquid, the rope along with a handle can be used to balance the pump.

Warning!
The pump is only suitable for extracting clean water, not for domestic sewage or water containing solid particles.
Installation

The equipment requires a cross sectional area of at least 20 x 20 cm.
The equipment is immersed to the depth of the technical parameters.
The suction opening will not be blocked by foreign bodies when installing the equipment. The stability of the equipment must be ensured.

Caution!
There is a risk of damage to the equipment!
Do not lift the pump by cable or pressure hose because the cable or pressure hose is redesigned without taking into account the tensile force from the pump weight.
Warning!
All connection lines and joints must be sealed reliably. Any leakage will cause the machine to operate frequently and reduce life.

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Connecting the pressure pipe

Screw the pressure pipe into the pressure joint. All joint connections must be sealed with a threaded seal belt.
You should screw the appropriate pressure hose adapter into the pressure joint when using the pressure hose.
You should firmly screw the pressure hose into the hose adapter and fix it with a hose clip.

Please use the appropriate plumbing if it is used occasionally. It is recommended that rigid pipes with check valves be used in fixed positions. It prevents the liquid from flowing back when the machine is shut down.
Use a strong rope to connect the handle of the pump and dip it into the liquid to be conveyed at a certain angle, so that the lower side of the device has no bubble formation to prevent the bubbles from being sucked in. Put the equipment down slowly, and once the pump is submerged, it can be adjusted again.
The pump is arranged at the bottom of a liquid container, Fasten the end of the rope after lowering so that the pump can also be handled when hanging on the rope. The pump can work after the device is connected to the main power source.
In most cases, you will be able to troubleshoot problems easily by yourself. Before you contact us, please refer to the following table for technical support.
This will help you save a lot of work and possible expenses.

Problem	Reasons	Solution
The pump cannot start Pump can’t start/ stop suddenly when running

1.Unconnected power supply/ the cut – off of supply – Defective power cord or plug .
2.Entering the state of keeping pressure at rest-abnormal block- age of pipes or pumps, hot circuit breaker cutting circuit.
3.Impeller damage causing blockage.
4.Thermal circuit breakers cut off due to high ambient or water temperature.
5.The internal pressure signal switch is failing.| 1.Checking power supply/ inspection of safety devices- professional electrical inspection.
2.You open the outlet valve. The pump will automatically open after discharge. Removing blockage, the pump is recharged water after it is full cooled.
3.Inspection by the maintenance service.
4.Ensure that the water temperature and ambient temperature is below 35 °C. And it is re-electrified pumping.
5.Check the signal source in the traffic maintenance department.
Pumps are frequently opened and stopped.| Leakage at outlet pipe or joint- fouling clogging internal, one-way valves leading to lax sealing.| Maintain or replace the pipes and joints- cut off the power supply and clean the one-way valve.
Too small flow rate
No flow of water or too small flow| 1.Insufficient water supply, not up to impeller height.
2.Pressure tube is bent and damaged.
3.Dirty water or particulate sewage reduces the flow of water.
4.Inlet blockage.| 1.Increasing water supply.
2.Adjusting hose and replacing pipeline.
3.Cleaning the inlet and replacing damaged parts (e.g. worn impellers). 4. Cleaning the inlet.
The pump can not be shut down.| The one-way valve in the pump is gripped with dirt.| Inspection by the maintenance service.

The pump is not allowed to transport corrosive substances, flammable and explosive substances (such as gasoline, petroleum, nitro diluent), grease, oil, brine and toilet equipment sewage, as well as low mobility mud sewage. The temperature of the liquid cannot exceed 35 °C.

Cleaning

Clean the equipment from the outside.
Flush with clean water. Use brush and detergent to remove stubborn pollution. Immerse the pump into a container with clean water, open it for running a while, and flush it in the pump.

Storage

If there is a risk of frost, remove equipment and accessories, and clean and store it a place protected from frost.
Warning!
Please unplug the plug before any maintenance, and then open the outlet valve to ensure that there is no pressure in the pipeline.
Attention:
Before using the pump again, first “clean” to prevent any possible dirt residue which could affect the equipment operation.
Risk for equipment damage!
Frost will destroy electrical appliances and accessories, because they always contain water.

Disposal
Products marked with adjacent symbols shall not be treated as domestic rubbish. You must deal with these old electrical and electronic equipment separately.
Please contact local authorities to see if they can be handled properly. Make the old equipment available for recycling,processing, or other forms of second use by separate handling.
You can avoid polluting the environment by doing so.
The packing is made of cardboard and corresponding marking plastic. These materials can be recycled.

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Technical Data

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.
Please note that our equipment has not been designed for use in commercial, trade or industrial applications. Our warranty will be voided if the machine is used in commercial, trade or industrial businesses or for equivalent purposes.
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.

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