HITACHI WT Series Water Pump Instruction Manual

HITACHI WT Series Water Pump

Product Information

Specifications

• Model: WT-P100XX, WT-P150XX, WT-P200XX, WT-P250XX, WT-P300XX, WT-P350XX, WT-P400XX
• Output: 100W – 670W
• Motor Input: 510W – 670W
• Rated Voltage: Varies
• Frequency: Varies
• Suction Lift: Up to 20m
• Discharge Head: Up to 20m
• Pump Capacity (at Total Head 12m): Varies

Product Usage Instructions

Installation

It is necessary to have the pump installed by a professional to ensure proper installation.

Safety Precautions

• Always remove the plug or turn off the switch immediately in case of abnormal pump operation.
• Avoid rolling, twisting, pulling, bending, or modifying the power cord.
• Do not use wet hands when plugging or unplugging the pump.
• Ensure a Leakage Circuit Breaker is installed specifically for the pump.
• If the power cord is damaged, have it replaced by a qualified person to avoid danger.

Maintenance

Wear gloves while performing maintenance tasks. Check for water leakage around the pump regularly to prevent damage.

Initial Setup

1. Fill the pump with water after installation by opening the hopper cap and pouring water in.
2. Check for any leaks around the pump.

Air Charger Usage

If pumping water more than 3 meters deep, remove the check spring from the pump to reduce the load. Follow the steps provided in the manual for proper air charger usage.

Suction from Well or Reservoir Tank

Assemble the strainer to prevent waste from entering the pump when sucking from a well or reservoir tank.

Frequently Asked Questions

Q: What should I do if the pump does not work properly?

A: If the pump works abnormally or does not work at all, contact the distributor for inspection and repair.

Q: Can I adjust the pressure switch on the pump?

A: Adjusting the pressure switch may cause malfunction and void the warranty instantly. Do not adjust the pressure switch yourself.

MODEL

• MODEL : WT-P100XX, WT-P150XX, WT-P200XX, WT-P250XX, WT-P300XX, WT-P350XX, WT-P400XX
• Thank you for choosing to use the HITACHI pump and supporting the various products of the company.
• Please read and understand the manual before using the pump.
• Please keep this manual after reading it along with the warranty card as a reference.

PRECAUTIONS ON SAFE USE

Before using, please try to understand [the precautions on the safe use] carefully and use the pump correctly.

The precautions are shown as follows:

• The level of damage and wear that may occur from abuse or ignorance of the warnings is shown in the table as follows.
• Warning Content in the symbol means [The danger may result in severe injury or death]
• Precaution Content in the symbol means [The danger may cause damage to assets or injury]

Examples of the symbols

• The content shows [warning or precaution]
• The content shows prohibitions [Do not do it]
• The content shows a necessity that must always be done [Explanation]

WARNING

• Do not disassemble, repair, or modify the unit unless you are a professional serviceman.
• Do not Disassemble This may result in fire, malfunction or personal injury.
• While repairing you must take off the plug or cut off the electricity, and do not use wet hands to plug in or remove the olua out.
• Do not touch with wet hands It may cause a short circuit.
• You must always ground the appliance, and install a Leakage Circuit Breaker specifically for it.

Grounding

• If there is a defect or electric leak, it may cause a short circuit. For the installation of an earth wire, please consult the distributor.
• Do not use the pump while its cover is removed.
• Prohibition It may cause a short circuit or fire from dust or degenerated insulation.
• WARNING In case there is dust on the plug blades or surface, please clean it.

Cleaning

• If not, it may cause a fire.
• Wiring should be made with correctness and safety according to the internal requirements on technical standards for electrical appliances.
• Wiring Faulty wiring may cause a short circuit or fire.
• One should remove the plug out or turn off the switch immediately to prevent an accident.
• In case the pump works abnormally or does not work, call the distributor for inspection and repair.

Repairing

• There is a risk of fire, short-circuit, power leak, and electric shock.
• Do not roll, twist, pull, bend, or modify the power cord or cause a mark or damage to it. Do not put heavy things on it, clip, or modify the cord.

Prohibition

• The power cord may be damaged and cause a short circuit.

PRECAUTIONS

• In the event of not using it for a long time, remove the plug out of the outlet or turn off the switch.
• Do not place objects on the pump.

Prohibition

• It may cause the pump to be damaged.
• While removing the plug, pull the plug body.
• Warning If not, it may cause an electric shock.
• Do not place flammable materials inside the pump cover, and do not cover the pump with any material.

Prohibition

• The pump will overheat, due to the inability to vent which may result in fire or pump damage.

Warning

• If the power cord is damaged, it must be replaced by the distributor agent or similarly qualified persons to avoid danger.
• The appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• Do not touch the pump motor while the pump is running.

Prohibition

• Due to the high temperature, it may cause a scald
• Caution While performing maintenance, should wear gloves during working.
• To prevent possible injury.
• ****Check whether the flooring offers effective leakage prevention and drainage.
• Caution Otherwise, in the case of a water leak, it may cause damage to the pump.
• When the pump is installed, please check that no water leakage occurs.
• (Dry Run) Do not dry run it.

Prohibition

• The water left in the pump may overheat and cause the parts damage.
• Prohibition Do not use the pump with other liquids such as oil, thinner, or hot water at 40°C or more.
• Otherwise, it may cause injury or a short circuit.
• Components of the pump, such as plastic, and rubber parts, can be damaged.
• CAUTION Check the installation area.
• Avoid sites that are easily flooded, as it may cause damage to the pump.
• Please read the operational manual with understanding before installing and using Pump.

CAUTION

1. Be careful after hilling water, tighten the hopper cap to prevent leaking water.
2. Check the possibility of leaking in the step of installing the pump (by turning on the pump) with certainty before closing the pump cover.
3. Do not open the cover while using.

PART NAMES AND STRUCTURE

MODEL : WT-P100XX, WT-P150XX, WT-P200XX, WT-P250XX, WT-P300XX, WT-P350XX, WT-P400XX

When pumping water more than 3 meters deep, have to take the check spring out from the pump to reduce the load of the pump.

ACCESSORY

1. Remove the screw from the valve cover (follow the position in the circled picture)
2. Remove the valve cover.
3. Take the check spring out
4. Close the valve cover and tighten it with a screw as before.

Strainer

In the event of sucking from a well or a reservoir tank, assemble the strainer to prevent the waste from entering the pump.

Prohibition Adjusting the pressure switch may cause the pump to malfunction and cause the parts damage. The warranty will be terminated instantly if you adjust the pressure switch.

CAUTION How to prime it

• After installation on the first run, open the hopper cap and fill in some water.
• While filling water, must not overflow, and be careful the water does not touch any electrical element such as the motor, electronic parts, etc. (For Pump lower than 350W. water must be filled more than 400mL)
• After filling the water, close the Hopper cap. Then check the leakage around the pump.
• In the case of a height of suction is deep 6-8 meters, or the length of horizontal pipe is long. Plesase follow these steps.
• Close the discharge valve (as picture below).
• Open the cap (Hopper cap) and fill the water. Until full of water from the pump housing cap position. After closing the cap, do not tighten.
• Operate the pump for the air out for approximately 5-6 minutes. The pressurized water up to the cap. Immediately turn off the cap and tighten it.
• If the water is not out vet. add more water and do the same. Until pumped up.
• If water pumped up, the pump will be stop working immediately. After that opening the discharge valve. It is finished.
• When pumping from deep water or the pump lines are laid horizontally for a great distance, may affect the water suction time.

SPECIFICATIONS

The valves are shown in the table variable according to the condition such as pipe diameter number of bent points, foot valve, and others.

INSPECTIONS BEFORE INSTALLATION

• Check the installation site.
• Choose a place that can easily be checked or serviced.
• It should be installed near the well as much as possible.
• Horizontal piping distance (from the well to the pump) is restricted by the suction height. (From the water level to the pump center) set the suction range considering the water level is reduced at a minimum level (during the summertime)
• Do not use soft pipes (PE pipe) on a hose to connect the suction and discharge side, cause the efficiency of the pump becomes less or easily gets in the air.
• The limit of the pipe in horizontal lengths is based on the suction height.
• Check the sand
• Avoid installing a water pump in a sandy well, it causes damage to the pump.

PRECAUTIONS

In the case of the impeller of the motor lock, it may caused by sand or PVC pipe scrap getting stuck in the impeller check as follows.

• Remove the power plug before repair.
• Drain water out of the pump first.
• Use a wrench to remove the Hex bolt M5 x 20 sus.
• Remove the sand or PVC scrap and clean it up.
• Clean up before replacing the casing cover, and tighten the Hex bolts.
• Put the plug in and check whether the motor operation rotates or not. If no rotation, please contact the distributor.

PRECAUTIONS BEFORE INSTALLATION

• Check the installation site to make sure that it has good drainage.
• If water leaks, it can result in serious damage.
• The water pump should be installed in a location protected from rain or direct sunlight and well-ventilated area.
• The water pump should be installed in a horizontal plane and tightened with a nut to avoid abnormal sound from vibration.
• The water pump should be installed more than 1 meter away from the water tank to prevent the water hammer from closing the pump.
• The water pump should not be installed by attaching to the wall, as it will cause noise from the water hammer.
• The water pump should not be installed on the water tank without an air vent, it will cause abnormal humidity and temperature and cause damage to the product.

INSTALLATION ROUTING THE HARNESS

• WARNING Wiring should be considered a safety priority and comply with the technical standard of the electrical appliance or internal wiring.
• Leakage Circuit Breaker Please connect the ground wire and install a leakage circuit breaker.
• You must connect a ground wire and install a leakage circuit breaker specifically for this job.
• You may have an electric shock when the pump is malfunctioning.

Leakage Circuit Breaker

Install the ground wire to prevent accidents from electric shock when electrical leakage occurs. Grounding and leakage circuit breakers require installation by an electrician specialist.
The plug cord must be disconnected from the electrical outlet first and then installed.

Precautions

• Do not install the ground wire in the following places. (It is a legal prohibition)
• Where there is a gas pipe, telephone line, lightning rod, and plumbing.
• Leakage Curcuit Breaker
• Installing Leakage Circiut Breaker
• Please install a circuit breaker with a working current of less than 15 mA.
• In the case where there is an existing circuit breaker, check as specified above.

HOW TO INSTALL THE PUMP

Installation of the pump depends on the suitability of the house or building using the following characteristics.
In case the pumping for the tank is on the ground.

PVC Precaution in the installation of PVC pipes

1. Using a tool (saw blade) to cut it will produce PVC waste.
2. Clean the PVC waste with sandpaper or similar material.
3. The cause of the pump not working (motor lock) usually is from PVC waste stuck in the impeller.

Preparation before the installation

1. The suction and delivering ranges can be found on the specification of the pump for each model. (Specification)
2. The installation should use the bent joints to a minimum in order not to lose the efficiency of water delivery.
3. Do not adjust the pressure switch because it may cause abnormal operation or pump damage.
4. If the pump is pumping water from a reservoir or a shallow well, the foot valve should not be installed at the end of the pipe because the pump already has a check valve.
5. The installation should install a ground wire to prevent danger in case the insulation deteriorates.
6. In case of a breakdown during the installation or use, contact the serviceman or distributor.

PROBLEMS AND REPAIRS

When there is a problem during usage, you should stop the pump, remove the plug, and check to find the cause or consult your distributor.

WIRING DIAGRAM

WT-P100XX. WT-P150XX. WT-P200XX, WT-P250XX. WT-P300XX. WT-P350XX. WT- P400XX

Documents / Resources

| HITACHI WT Series Water Pump [pdf] Instruction Manual
WT-P100XX, WT-P150XX, WT-P200XX, WT-P250XX, WT-P300XX, WT-P350XX, WT-P400XX, WT Series Water Pump, WT Series, WT Series Pump, Water Pump, Pump
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