Tsurumi Pump KRD Series Operation Manual

Submersible slurry pumps, submersible high-head dewatering pumps

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KRD/NKZ/GPN/GSD/GSZL Series
Submersible High-Head Dewatering Pumps
INTRODUCTION
Thank you for selecting the Tsurumi KRD/NKZ/GPN/GSD/GSZ/GSZL Series submersible slurry pumps.
This operation manual provides product information as well as precautions for safe and reliable operations.
To avoid possible malfunction or an accident, acknowledge them thoroughly beforehand of pump operation.
Using the pump for applications other than those listed in this manual or failure to observe the precautions
may lead to a malfunction or an accident. And in such a case, the manufacturer will not take any liability.
Therefore, keep this manual in an easily accessible place, so that the precautions/information can be referred
to as needed. In addition, this operation manual should remain with the pump if rented or resold. If the
operation manual gets lost or damaged, ask your nearest dealer or Tsurumi representative for another copy.
Similarly, if you cannot troubleshoot the problem(s) with the information provided in the manual or if have
queries regarding the operation, service, repair, or maintenance of the submersible pump, please contact the
Tsurumi pump dealer nearby your place. The contents of this document may not be copied in whole or in part
without the express permission of Tsurumi Manufacturing Co., Ltd.
TSURUMI MANUFACTURING CO., LTD.
Submersible Slurry Pumps
GSZ Series
OPERATION MANUAL
1. BE SURE TO READ FOR YOUR SAFETY ..................... 1
2. NAME OF PARTS .......................................................... 4
3. PRIOR TO OPERATION ............................................... 7
4. INSTALLATION ............................................................. 9
5. ELECTRICAL WIRING .................................................... 12
6. OPERATION .................................................................... 16
7. MAINTENANCE AND INSPECTION ............................... 19
8. DISASSEMBLY AND REASSEMBLY ............................. 21
9. TROUBLESHOOTING .................................................. 29
CONTENTS
17200487/B-10240-6

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Summary of Contents for Tsurumi Pump KRD Series

  • Page 1: Table Of Contents

    Tsurumi pump dealer nearby your place. The contents of this document may not be copied in whole or in part without the express permission of Tsurumi Manufacturing Co., Ltd.
  • Page 2: Be Sure To Read For Your Safety

    1 BE SURE TO READ FOR YOUR SAFETY Be sure to thoroughly read and understand the SAFETY PRECAUTIONS given in this section before using the equipment in order to operate the equipment correctly. The precautionary measures described in this section are intended to prevent danger or damage to you or to others.
  • Page 3 CAUTION Be sure to provide a ground wire Attach a hose securely to the hose securely. Do not connect the coupling. Imperfect connection of hose could cause water leakage which may ground wire to a gas pipe, water result in the damage of nearby walls, pipe, lightening rod, or telephone ground wire.
  • Page 4 PRECAUTIONS DURING MAINTENANCE AND INSPECTION WARNING Absolutely turn off the power supply or disconnect the plug before starting maintenance or inspec- tion. Do not work with wet hands. Failure to observe these cautions may lead to electrical shock or injury. In case any abnormality (excessive vibration, unusual noise or odor) is found in the operation, turn the power off immediately and consult with the dealer where it was purchased or Tsurumi representative.
  • Page 5: Name Of Parts

    2 NAME OF PARTS Example ; KRD Series Cabtyre Cable Handle Hose Coupling Mechanical Seal Oil Lifter Lubricant Shaft Sleeve Oil Plug Oil Seal Impeller Suction Plate Suction Cover Pump Casing Strainer Stand Agitator Connection Rod Agitator Note: The above diagram is typical of the KRD47.5, but some models may vary slightly in appearance or internal structure.
  • Page 6 Example ; GPN Series Cabtyre Cable Air Release Valve Handle Oil Plug Hose Coupling Lubricant Mechanical Seal Oil Lifter Oil Seal Shaft Sleeve Impeller Pump Casing Suction Plate Suction Cover Agitator Strainer Stand Note: The above diagram is typical of the GPN35.5, but some models may vary slightly in appearance or internal structure.
  • Page 7 Example ; GSZ Series Cabtyre Cable Eyebolt Mechanical Seal Oil Lifter Lubricant Oil Plug Shaft Sleeve Pump Casing Oil Seal Impeller Suction Cover Strainer Stand Note: The above diagram is typical of the GSZ837, but some models may vary slightly in appearance or internal structure.
  • Page 8: Prior To Operation

    3 PRIOR TO OPERATION When the pump is delivered, first perform the following checks. Inspection While unpacking, inspect the product for damage during shipment, and make sure all bolts and nuts are tightened properly. Specification Check Check the model number to make sure it is the product that was ordered. Be certain it is the correct voltage and frequency.
  • Page 9 Standard specifications (50/60Hz) Bore Max Head Max Capacity Output Weight Model (mm) Phase Starting Method /min) (kW) (kg) (inch) (feet) (GPM) KRD35.5 Direct-on-Line 15.8 / 14.8 1.67 / 1.70 KRD47.5 Direct-on-Line 17.1 / 17.2 2.35 / 2.25 KRD611 Direct-on-Line 22.0 / 24.1 3.25 / 3.30 175 / 167 NKZ32.2-51...
  • Page 10: Installation

    4 INSTALLATION CAUTION • Do not use this pump in liquids other than water, such as oil, salt water, or organic solvents. • Use with a power supply voltage tolerance within ± 5% of the rated voltage. • Do not use in water temperatures outside the range of 0 ~ 40°C, which can lead to failure, electrical leakage or shock.
  • Page 11: Maximum Allowable Water Pressure

    Maximum allowable water pressure CAUTION Do not use at greater than the water pressure shown below, which can damage the pump resulting in electrical leakage and electrical shock. Model Maximum allowable water pressure KRD / NKZ Series 0.3 MPa (3 kgf/cm ) - discharge pressure used GPN Series except for GPN422 / GSZL Series 0.4 MPa (4 kgf/cm...
  • Page 12 (3) Install the pump in a location with sufficient water level, where water collects readily. Note: The "Operating water level" chart below shows the water level necessary for operation. The tip of the hose (discharge end) should be located higher than the water surface. If the end of the hose is submerged, water may f ow back to the pump when the pump is stopped;...
  • Page 13: Electrical Wiring

    Using a pipe (1) Handle the pump with care not to give excessive shock or drop down. Attach chain or wire rope to the eyebolt to lift or lower the pump. Note: Shackle See Electrical wiring for handling the cabtyre cable. CAUTION Refrain from dry running, or otherwise the pump may not perform sufficiently, or even cause faults,...
  • Page 14 Cabtyre cable CAUTION • If it is necessary to extend the cabtyre cable, use a core size equal to or larger than the original. This is necessary not only for avoiding a performance drop, but to prevent cable overheating which can result in fire, electrical leakage or electrical shock.
  • Page 15 Protector Circuit (Yellow) V-White Protector Circuit (Yellow) W-Black G-Green Star-Delta Start Star-Delta Start GSZ(L) Series (150kW or Option) GSD Series (37kW) GSZ(L) Series (37kW & 45kW) Ground Ground U1 V1 W1 U2 V2 W2 S1 U1 V1 W1 U2 V2 W2 S2 S3 Protector Circuit-Black...
  • Page 16 SPECIAL NOTE FOR D.O.L STARTING Wiring for models Applicable to the following models : Models with output of 37kW (50HP) or above D.O.L start Star-delta start Cables From Pump WIRING WIRING Protector Circuit Protector Circuit &V &W &U Miniature Protector Coil Ground Ground...
  • Page 17: Operation

    6 OPERATION Before starting (1) Make sure once again that the product is of the correct voltage and frequency rating. CAUTION Using the product at other than rated voltage and frequency will not only lower its performance but may damage the product. Note: Conf rm the rated voltage and frequency on the model name plate.
  • Page 18 Power supply voltage tolerance = within ± 5% of the rated voltage. COUNTERMEASURE If the supply voltage is outside the variation, possible causes are the power supply capacity or an inadequate extension cable. Look again at Electrical Wiring and make sure the conditions are proper. CAUTION In case of very excessive vibration, unusual noise or odor, turn off the power immediately and consult with your nearest dealer or Tsurumi representative.
  • Page 19: Motor Protection System

    Motor protection system WARNING During inspections or repairs, always be sure to turn off the power. Sudden unexpected starting of the pump can cause electrical shock, shorting, or serious injury. CAUTION • Always determine the cause of the problem and resolve it before resuming operation.
  • Page 20: Maintenance And Inspection

    Be sure to replace the warning label of the cable with the new one after repairing or changing the cable. If you do not have a new warning label for the replacement, contact the Tsurumi pump dealer nearby your place.
  • Page 21 Storage When the pump is out of use for an extended period, wash it and dry it thoroughly, then store it indoors. Note: Always run a test operation before putting the pump back into service. When the pump is left installed in water, it should be run at regular intervals (about once a week). Oil inspection and Oil change WARNING When the pump is tilted for inspecting or changing the oil, pay careful...
  • Page 22: Replacement Parts

    Replacement Parts The table lists the parts that need to be replaced periodically. Replace these using the recommended frequency as a guideline. Part Replacement Frequency Mechanical Seal When oil is discolored. Lubricant ; Turbine Oil VG32 (non-additive) See Regular Inspection on P.19 Packing, O-Ring Each time pump is disassembled or inspected.
  • Page 23 With a box wrench or the like, remove the hex. bolt, hex. nut and plain washer, remove the agitator from its connection rod, then remove the impeller, impeller adjusting washer and shaft sleeve from the shaft. Exploded View (KRD Series) Suction Cover Packing...
  • Page 24 Disassembly (NKZ Series) Note: Remove the oil prior to disassembly. (1) Remove the bottom plate and strainer. Remove the hex. nuts then remove the bottom plate from the strainer. Next remove the stud bolts and plain washers, then remove the strainer from the suction cover. (2) Remove the suction cover.
  • Page 25 Disassembly (GPN Series) Note: Remove the oil prior to disassembly. (1) Remove the strainer stand. Remove the hex. nuts and spring washers under the strainer stand, then detach the strainer stand from pump. (2) Remove the suction cover. Remove the hex. bolts, plain washers and stud bolts, then remove the suction cover, suction plate and packing from the pump casing.
  • Page 26 Disassembly (GSD Series) Note: Remove the oil prior to disassembly. (1) Remove the strainer stand, suction cover, mouth ring and suction mouth. Remove the hex. bolts and spring washers, and remove the strainer stand from the pump. Next, remove the hex. bolts and spring washers, then remove the suction cover, mouth ring, suction mouth and O-ring from the pump casing.
  • Page 27 Disassembly (GSZ Series) Note: Remove the oil prior to disassembly. (1) Remove the strainer stand and suction cover. Remove the hex. bolts and spring washers, and remove the strainer stand from the pump. Next, remove the hex. bolts and spring washers, then remove the suction cover and O-ring from the pump casing. (2) Remove the impeller.
  • Page 28 Disassembly (GSZL Series) Hex. Bolt Spring Washer Oil Plug O-Ring Oil Seal Shaft Sleeve Hex.Socket Set Screw Suction Plate O-Ring Suction Cover Spring Washer Hex. Bolt Pump Casing Hex. Nut Suction Plate Adjusting Bolt Impeller Strainer Plain Washer Plain Washer Spring Washer Spring Washer Hex.
  • Page 29 (suction plate) by using a feeler gauge, then adjust the gap with the following procedure. • KRD Series, NKZ Series, and GPN35.5 / 411 / 415 If the measured gap is not within the specified gap on the list below, adjust it by changing the quantity and thickness of the suction cover packings and/or the impeller shims (inserted between the impeller and the shaft sleeve).
  • Page 30: Troubleshooting

    9 TROUBLESHOOTING WARNING Always turn off the power before inspecting the pump. Failure to observe this precaution can result in serious accident. Before ordering repairs, carefully read through this instruction manual, then repeat the inspection. If the problem remains, contact your nearest dealer or Tsurumi representative. Problem Possible Causes Countermeasure...

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