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Teral LPE-e Instruction Manual

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Instruction Manual
Line Pump
Model: LPE-e
Warning
Do not carry out operation, inspection or maintenance of the pump until you read this manual and
understand the content.
Keep this manual carefully at hand so that it can be consulted at anytime when operating, inspecting or
maintaining the water supply unit.
For contractors who carry out equipment work:
Please be sure to deliver this manual to the customer who will operate, inspect or maintain the pump.
TERAL INC.

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Summary of Contents for Teral LPE-e

  • Page 1 Instruction Manual Line Pump Model: LPE-e Warning Do not carry out operation, inspection or maintenance of the pump until you read this manual and understand the content. Keep this manual carefully at hand so that it can be consulted at anytime when operating, inspecting or maintaining the water supply unit.

  • Page 2: Limited Warranties

    (6) Failures and breakage caused by use or storage outside the specification range 4. Teral Inc. shall not be liable for the damage caused by incorrect or reckless use of the pump. Cost and expenses incurred for sending engineer(s) in such a case shall be borne by the user.

  • Page 3: Table Of Contents

    Purpose of this manual The purpose of this manual is to provide the user with detailed information necessary to properly operate, maintain and inspect the pump. Incorrect operation of this product may lead to an unexpected accident. Please use the product correctly according to this instruction manual. This manual contains the following information and is intended for persons experienced in the operation of pumps, or for those who have been trained by such experienced operators.

  • Page 4: Safety Precautions

    1. Safety precautions Before using the unit, thoroughly read this “Safety precautions” to properly use the product. Information described below is vital to safe and proper use of the unit and prevention of hazard and/or damage. Types and meanings of safety signs and graphic symbols This instruction manual divides precautions into the following four categories according to the level of hazards (or the severity of the accident).
  • Page 5 For overhaul, replacement of parts, or repairs, Do not put your fingers or foreign objects into any contact Teral or the service center specified by openings or rotating part of the motor during Teral. operation.
  • Page 6 Do not run the pump with tools or other objects cannot be resolved, immediately stop the placed on the unit. operation, turn off the power, and then contact Teral Otherwise, it may result in injury and/or breakage. or its service provider.

  • Page 7: Location Of Warning Labels And Caution Labels

    Location of warning labels and caution labels The figure shows the locations of warning labels and caution labels. If these labels become dirty and illegible or if they are peeled off, replace them with a new one. Warning Caution Observe all the warnings and cautions affixed to the machine as well as those described in this instruction manual.

  • Page 8: Configuration And Overview Of The Pump

    2. Configuration and overview of the pump This chapter describes the standard specifications of the pump. If you have purchased a customized product, some information in this chapter may not be applicable to your unit. Refer to the delivery specifications for the details separately. Before using the pump Upon receiving the pump, check the following points first.

  • Page 9: Part Names And Functions

    Part names and functions Casing It connects the pipes. An impeller rotates inside the casing to pressurize the liquid used. Motor Shaft coupling Shaft coupling guard Pump main shaft Shaft seal (mechanical seal) Air vent plug Drain plug Hanging metal fitting (11-22kW) Warning Be sure to put a shaft coupling guard during operation.

  • Page 10: Standard Specifications

    * 2 Antifreeze solutions are supported as special specifications. Contact Teral Inc for consultation. The mechanical seal may not be used according to the type of antifreeze solutions. * 3 Depending on the conditions of use, the pump may be used for water at over 80°C. Contact Teral Inc for consultation.

  • Page 11: Specification Table

    Specification table Frequency Bore Type Output Specifications Discharge rate NPSHR Discharge rate NPSHR Discharge rate NPSHR /min /min /min 7.5~11 15~18.5 22~30 11~15 K(C) 18.5 J(C) 18.5~30 G(C) F(C) 45~75 22~30 10.0 J(C) 37~75 13.0 13.8 7.5~15 18.5~30 15~22 10.1 J(C) 37~45 F(C)

  • Page 12: Installation

    3. Installation Precautions for installation Caution Observe the precautions for installation in the main text below. Failure to observe this may cause failure or damage. It may also result in shortening the service life of the unit. (1) Install the product at a location where the following conditions are all satisfied: A well-ventilated place at an ambient temperature of 0°C to 40°C with minimum exposure to dust and moisture A place that is free from the exposure to a jet of steam and salt damage...
  • Page 13 (3) If the pump is used for hot water circulation through closed piping, fit the piping system with an expansion tank, a safety valve, and other devices. Otherwise, the pump may be damaged. (4) If the pump is used as a circulating pump, attach a sluice valve each to the suction and discharge sides of the pump.

  • Page 14: Installation Procedure

    Caution When lifting the product, use a suitable lifting device. Moreover, pay attention to its center of gravity. The product may topple over or fall, thus leading to an injury. (7) Ensure to provide a drain ditch around the pump, (8) If the system could be exposed to the freezing temperature in winter, ensure to take measures to prevent freezing in the pump room or to prevent the pump, sluice valves, piping, and other devices from freezing.

  • Page 15: Precautions For Piping Work

    (6) Place a level on the flange surface to check if it is vertical as shown in the right figure. If the surface is not horizontal, adjust it Level with metal wedges. (7) Once the verticality is ensured, inject mortar into the foundation holes, the clearance under the common base, and the area around the common base.
  • Page 16 (8) The recommended diameter of the suction pipe is equal or larger than that of the pump inlet (a Suction port (150A) size larger as a guide). In case, for negative Eccentric reducer suction pressure, you use a suction pipe of Suction pipe (200A) larger diameter than that of the pump inlet, attach an eccentric reducer to prevent air from...
  • Page 17 Attach a foot valve with a strainer to the end of the suction pipe to prevent entry of foreign objects. Immerse the foot valve in water and set it at a depth of at least twice the diameter of the pipe from the surface of water to prevent the suction of air.

  • Page 18: Precautions For Wiring Work

    (equivalent to IE3) motor-equipped products tends to become higher than that of standard efficiency (IE1) motor-equipped products. If you have any questions, contact your nearest office of Teral. Note When switching from an IE1 motor-equipped product, it is necessary to verify the applicability of its protection device on the primary side of the pump.
  • Page 19 Do not use the inverter to drive a motor equipped with a self-protecting device. • When driving a 400V-class motor, contact your nearest office of Teral. In some cases it might be necessary to take measures for inverter surge. •...

  • Page 20: Operation

    4. Operation Check items before test operation 4.1.1 Check items related to the electrical system Warning Before changing the wiring, be sure to turn off the main power supply. Otherwise, you may receive an electric shock. Warning Do not use the product at any voltage other than the rated value. A fire or electric shock may occur.

  • Page 21: Running The Pump (Test Operation)

    (3) Rotate the shaft by hand to check its smooth rotation. Remove a shaft coupling guard, grip a coupling and turn its shaft. The rotation must be smooth without binding. Warning Before turning the pump shaft by hand to check its rotation, be sure to turn off the main power.
  • Page 22 Warning If the liquid used exceeds 40°C, do not touch the pump. The surface of the pump may be so hot that it may cause burns. Caution Do not run the pump dry, and do not allow a large amount of air or foreign matter to enter the pump.
  • Page 23 (7) Before restarting the pump, confirm that the pump has completely stopped. Caution Before restarting the pump, be sure to check that the pump has completely stopped. Turning on the power while the pump is still rotating causes an excessive torque on the pump and may cause a failure. (8) Check for any abnormal pressure, electric current, vibration, noise, and other conditions.

  • Page 24: Maintenance And Inspection

    Caution For overhaul, replacement of parts, or repairs, ask the vendor, the service center specified by Teral, or your nearest Teral sales office. Incorrect work may cause a failure or accident. Precautions for maintenance and inspection (1) Observe the following instructions, in particular, during daily inspection.

  • Page 25: Mechanical Seal

    Caution Periodically clean the strainer located on the pump suction side. A clogged strainer may cause pressure fluctuations, a lower discharge rate, abnormal noise, and other problems, thus leading to a pump failure. (2) If you do not use the pump for a long time, observe the following points: To prevent possible freezing inside the pump in winter, be sure to take antifreeze measures such as heat insulation or the installation of a heater to the pump or completely drain the pump.

  • Page 26: How To Remove The Mechanical Seal

    5.3.1 How to remove the mechanical seal Remove the bolts to remove the shaft coupling. Remove the shaft coupling guard. Remove the parallel pins. *Before starting work, make sure that the power *When the shaft coupling is removed, a main supply is turned off.

  • Page 27: How To Attach The Mechanical Seal

    5.3.2 How to attach the mechanical seal O-ring Attach the mechanical seal fastening ring Attach the mechanical seal fastening ring to the main shaft. to the seal cover. Attach the main shaft to the impeller. Attach the seal cover to the casing. Tightening torque 27[N m] * Be careful not to damage the sliding surface of...

  • Page 28: Bearings

    Bearings Refer to the below table for bearing types. * When using other motors than our standard motor, check to see the nameplate placed on the motor or contact our nearest office for consultation. * Long-life urea grease is used as lubricating grease in bearings. Use bearings into which urea grease is filled.

  • Page 29: Maintenance Checklist

    Maintenance checklist Inspection interval Consumables Inspection Criterion Inspection point Inspection item Half- Timing of replacement method (Reference page) Daily Monthly Yearly yearly (as a guide)* Temperature Measure Between 0 and 40°C (2-3) RH85% or less (2-3) Check against the Humidity Measure (no condensing) specified range.

  • Page 30: Troubleshooting

    6. Troubleshooting If you find any abnormal conditions of the pump, carefully investigate the problem. For overhaul, replacement of the parts or repairs, ask the vendor or contact Teral or our servicing companies. Problem Cause (Reference page) Action (Reference page) Check the wires and connections to repair or Wiring is disconnected or broken.
  • Page 31 Throttle the sluice valve to adjust the rate as per The discharge rate is high. the specifications. Overload and overcurrent of the Contact Teral or our servicing companies A rotating part is in contact with another part. motor because disassembly inspection Foreign objects enter into the pump.
  • Page 32 Head Office 230, Moriwake, Miyuki-cho, Fukuyama-city, Hiroshima, 720-0003, Japan Tel.+81-84-955-1111 Fax.+81-84-955-5777 www.teral.net 2018 07 TP‑534‑01...

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