TSURUMI PUMP HSZ2.75S (01) PDF Document

After unpacking your TSURUMI PUMP HSZ2.75S, you should verify the contents and perform the following checks:

Product Inspection:

Inspect the product for any damage that may have occurred during shipment. Ensure that all bolts and nuts are tightened properly.

Specification Check:

Check the nameplate on the unit to verify that it is the product you have ordered. Pay particular attention to its voltage and frequency specifications. If you discover any damage or discrepancy, contact the dealer where the equipment was purchased.

CAUTION: Do not operate this product under any conditions other than those that have been specified.

The standard specifications for 50/60Hz models are as follows:

Note: The weight (mass) given above is the operating weight of the pump itself, not including the cabtyre cable.

CAUTION:

• The supply voltage should be within ± 5% of the rated voltage.

• The water temperature for operating the pump should be between 0 ~ 40℃.

Failure to observe these precautions could cause the pump to malfunction, which may lead to current leakage or electrical shock.

Critical Use Pressure:

Do not operate the pump in an area that is exposed to a water pressure that exceeds 0.2MPa (2kgf/cm²) – discharge pressure during use.

Preparation for Installation (Single-phase power supply):

Use a megger to measure the resistance between the tip of the cabtyre cable plug and the ground terminal to verify the insulation resistance of the motor. The insulation resistance reference value is 20M Ω minimum for a new or repaired pump.

WARNING: When installing the pump, be mindful of the pump’s center of gravity and weight. If the pump is not suspended properly, the pump may fall and break, which may lead to injury.

CAUTION:

• Never suspend the pump by the cabtyre cable. Doing so will damage the cable, which may cause a current leakage, electrical shock, or fire.

• The rope for suspending the pump during its installation must be of a thickness that accommodates the weight of the pump. When using a chain, make sure that the chain does not become twisted. Failure to observe these precautions could cause the rope or chain to break and the pump to fall and break, which could lead to personal injury.

1. Hose Connection: When a hose is used, attach the hose to the hose coupling as far as it will go, then fasten it securely with a hose band.

2. Handling: Handle the pump carefully without applying shock, such as by dropping it. To suspend the pump, do so manually or by attaching a rope or chain to its handles.

3. Water Level: Operate the pump in a location that has a sufficient water level and collects water easily. Extend the end of the hose (discharge side) above the water surface. If the end of the hose is submerged, water may flow back when the pump is stopped.

4. Hose Routing: Route the hose as straight as possible. Excessive bending could obstruct water flow. If the hose is kinked at its base, it can create air pockets, making the pump operate dry. Straighten the bend while operating the pump to prevent this.

5. Pump Position: Operate the pump upright. If there is a likelihood of the pump drawing in excess mud, place a concrete block under the pump to prevent premature wear and malfunction.

Set the length of the float lead wire (L) to the dimension indicated in the table below. Failure to observe this will lead to improper operation.

CAUTION: Install the float so that it moves properly up and down. If the float gets caught, it will cause the pump to operate improperly.

WARNING:

• All electrical work must be performed by an authorized electrician, in compliance with local electrical equipment standards and internal wiring codes. Never allow an unauthorized person to perform electrical work.

• Improper wiring can lead to current leakage, electrical shock, or fire.

• Be sure to use a dedicated ground leakage circuit breaker and overcurrent protector provided exclusively for this unit to prevent damage. Failure to observe this precaution may lead to current leakage and electrical shock.

Grounding:

WARNING: Be sure to install the ground wire securely. Failure to do so could damage the pump and cause current leakage, which may lead to electrical shock.

CAUTION: Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or telephone ground wire. Improper grounding could cause electrical shock.

Connecting the Power Plug:

WARNING: Before inserting the power plug or connecting wires, make sure the power supply (i.e., circuit breaker) is properly disconnected. Failure to do so may lead to electrical shock, short, or injury from unintended starting.

CAUTION:

• Do not use damaged cabtyre cables, power plugs, or loose power outlets.

• Be sure to use a dedicated power supply with a ground leakage circuit breaker.

• Beware that the power plug varies by country or region.

When connecting to a single-phase power source control panel, connect the leads as follows, ensuring they do not become twisted:

• L1: Red (Brown)

• L2: White (Blue)

• G: Green (Green/Yellow)

The TSURUMI PUMP HSZ2.75S is equipped with a built-in motor protector (circle thermal protector / miniature protector). If a current overload or overheating occurs, the pump will stop automatically to protect the motor, regardless of the water level. This can be triggered by:

• Extreme fluctuation of power supply voltage

• Pump operated under overload condition

• Pump operated at open phase or binding condition

Note: After the motor protector has tripped, the motor automatically resumes its operation. Therefore, you must disconnect the cabtyre cable from the terminal board or the power outlet and eliminate the cause of the problem. Do not operate the pump at an unusually low head or with a clogged impeller, as this can generate abnormal noise and vibration and damage the pump.

CAUTION: Do not operate the pump below the C.W.L. (Continuous Running Water Level) indicated below. Failure to observe this condition may result in damage to the pump, electrical leakage, or electrical shock.

The automatic type (HSZ) pump is equipped with floats to detect the water level for automatic drainage. Connect the power and perform a trial operation as follows:

1. Direct all the floats downward.

2. Raise the (yellow) float. This will cause the pump to start.

3. Next, return the (yellow) float to its original position. This will cause the pump to stop.

4. Perform steps (2) and (3) consecutively two or more times to verify the operation.

Note: The trial operation must be completed within 1 minute.

CAUTION: In case the pump exhibits an abnormal condition (such as a considerable amount of vibration, noise, or smell), disconnect the power supply immediately and contact your dealer. If the pump continues to be used in the abnormal state, it may cause current leakage, electrical shock, or fire.

The pump starts based on the current between the electrodes of the level relay unit. The necessary water level to operate the pump is 165mm from the bottom of the pump.

The operation flow is as follows:

1. Start Operation: When the electrodes of the level relay unit are submerged, the current operates the pump, and drainage begins.

2. Timer Trip: As the water level drops and the water surface recedes from the electrodes, the timer trips to continue draining water.

3. Timed Drainage: The draining of water by the timer lasts for approximately 1 minute. If the water surface comes back in contact with the electrodes within this minute, the pump will operate continuously even if the timer has tripped.

4. Stop: The pump will stop 1 minute after the timer trips.

5. Restart: When the water level rises and comes in contact with the electrodes again, the pump will restart.

Trial Operation:

WARNING: Never start the pump while it is suspended, as it may jerk and cause a serious accident involving injury.

1. Operate the pump for 3 to 10 minutes to verify its condition. In case of forced starting during the trial, you can short circuit between the electrodes with an item like a screwdriver to start it forcibly.

2. If any abnormal conditions (vibration, noise, smell) occur, disconnect the power supply immediately.

3. Proceed with normal operation if no abnormal conditions are found.

WARNING: Before inspection, make sure the power supply (i.e., circuit breaker) is disconnected and disconnect the cabtyre cable from the power outlet or terminal board.

Inspecting Oil:

Remove the oil plug and take out a small amount of oil. The oil can be extracted easily by tilting the pump so that the oil filler plug faces downward. If the oil appears milky or intermixed with water, a likely cause is a defective shaft sealing device (i.e., mechanical seal), which requires that the pump be disassembled and repaired.

Changing Oil:

1. Remove the oil plug and drain the oil completely.

2. Pour a specified volume of Turbine Oil VG32 into the oil filler inlet.

Note: The drained oil must be disposed of properly. The packing or the O-ring for the oil plug must be replaced with a new part at each oil inspection and change.

WARNING: Before disassembling and reassembling the pump, be sure that the power supply is disconnected and the cabtyre cable is removed from the outlet or terminal board. Do not connect or disconnect the power plug with a wet hand. Do not perform an activation test during disassembly and reassembly.

Disassembly Procedure:

Note: For assembly or disassembly, place the pump on its side.

Remove the Hex.Bolts and Hex.Nuts, then remove the Strainer Stand and Pump Casing.

Reassembly Procedure:

Reassembly can be performed by reversing the steps for disassembly.

1. Remove sand and other debris from rubber parts such as the Impeller and Casing Packing before assembling the pump.

2. Make sure the Casing Packing fits snugly against the Oil Casing.

3. When tightening the Stirrer, do not apply excessive force that might deform the impeller or cause the rubber liner to flake off.

WARNING: To prevent serious accidents, disconnect the power supply before inspecting the pump.

Properly dispose of the product by disassembling it, presorting the contents, and sending them to the waste material treatment site.