(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.
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. This product may cause an unexpected accident when handed incorrectly. 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.
Safety precautions Types and meanings of warning terms 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). In addition, prohibited or mandatory actions as well as cautions are indicated with a graphic symbol.
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If you need to disassemble the pump for check, parts change, repair and other work, ask the Do not touch any part of the pump that does not vendor or the service provider specified by Teral need operation, after energized. Inc.
In the event of an alarm or abnormal condition that cannot be resolved, immediately stop the Do not operate the pump when tools or other items operation and contact Teral Inc. or its service are placed on the pump. provider.
Motor Discharge port Suction port (Strainer) Air vent (not provided with the VKA-e models with Rp3/4 discharge bore) Vents the air in the pump to prevent dry run, if it is impossible to open the discharge piping to the atmosphere.
For other special liquids (e.g. pure water, alkaline/acidic liquids, and ceramic liquids), contact Teral Inc. Note 2 When the dynamic viscosity of liquids used becomes higher than that in the table below, the useful life of the motor may become shorter, leading to a burnout.
*2 The electric current indicated on the pump nameplate may differ from the rated current of the motor. The electric current indicated on the pump nameplate is based on actual use. Teral recommends using this value as the setup current value of the protective device.
/s (the same viscosity as fresh water at normal temperature). Basically, the above models cannot be used for pumping water. However, contact Teral Inc. for our suggestions. Note 2) The rated current in the above table (current value indicated on the pump nameplate) is the recommended preset current value of the protective...
Dimensional outline drawing and dimensions table (1) Dimensional outline drawing Fig. 1 Fig. 2 Rotation direction Rotation direction Pump name plate Pump name Terminal Ground plate Ground terminal terminal Companion Terminal flange Air vent Motor nameplate valve View from P-P Mounting Motor hole...
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(2) Dimensions table Unit: mm Unit: mm Models VKA-AH-e Models VKA-AQ-e Estimated Estimated Model Fig. Model Fig. mass (kg) mass (kg) VKA136AH-e VKA126AQ-e VKA146AH-e VKA136AQ-e VKA156AH-e VKA146AQ-e VKA166AH-e VKA156AQ-e VKA236AH-e VKA166AQ-e VKA246AH-e VKA226AQ-e VKA256AH-e VKA236AQ-e VKA266AH-e VKA246AQ-e VKA276AH-e VKA256AQ-e VKA286AH-e VKA266AQ-e...
Transportation, conveyance, storage and installation Precautions for transporting, moving and storing the pump (1) Do not unpack the container unnecessarily. If you unpack the container unnecessarily, securely pack again in such a manner that the product body does not jump out of it and fall down during transportation, conveyance or storage. (2) When you transport, move, or store the pump, ensure that the pump is located in a well-ventilated place with minimum exposure to dust and moisture in an environment at an ambient temperature of -25 to 55 degrees Celsius and humidity of lower than 85%RH.
Caution Do not run the pump at a frequency exceeding 60 Hz. Failure to observe this may overload the motor, causing it to burn out. Precautions for installation Warning Before rotating the main shaft by hand to check it, be sure to turn off the main power.
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(11) If the system could be exposed to the freezing temperature in winter, be sure to apply antifreeze measures such as heat insulation and heater installation to the pump, valves, piping, etc. (12) Install the pump securely. Recommended size of pump mounting bolt: M6 Note Securely tighten the bolts.
Precautions for piping work (1) The pipes should be as short and straight as possible (with minimal joints and valves). Use pipes whose bore size is equal to or larger than that of the pump. Piping which is thin and has many bends may decrease the discharge rate.
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(6) The position of the terminal box relative to the discharge port can be changed in steps of 90 degrees by rearranging the frame of the motor. If you rearrange the frame of the motor, ask Teral Inc. about the Cable outlet operating procedures.
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• If the motor is powered at a different voltage, it cannot be inverter-driven. (If it is necessary to use the motor with an inverter, contact Teral Inc.) • An inverter-driven motor generates a magnetic sound which may sound more annoying than those generated by the drives using unconverted commercial power.
Operation Check items before test operation 4.1.1 Check items related to the electrical system (1) Check that the equipment is correctly wired. (2) Check that the terminals are securely connected. (3) Check that the equipment is securely grounded. (4) Check that the setup value of the overload protection device is consistent with the rated current value of the motor.
Warning Before rotating the main shaft by hand to check it, be sure to turn off the main power. A sudden startup of the pump may cause an accident. (4) Open the air vent valve to release air. After the air release, close the air vent valve. If no air vent valve is provided, open the valve on the discharge piping to release air.
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Caution Do not check the rotational direction by the idling of the pump. Running the pump dry even for a short time may cause damage of the sliding parts (e.g. mechanical seals and bearings) in the pump, leakage or unusual noise. Caution Avoid reverse rotation because it may cause failures.
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Caution Minimize the frequency of startups and shutdowns of the pump as it may lead to premature damage to the pump. Do not start the pump more than 60 times an hour. (9) If a power failure occurs during operation, be sure to turn off the power. (10) Before restarting the pump, confirm that the pump is at a complete stop.
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Warning Do not put your fingers or other objects into the opening of the motor. Doing so may cause an electrical shock or injury.
Maintenance and inspection Warning Before checking the pump, be sure to turn off the main power. Failure to observe this may lead to a danger because the pump may suddenly start in automatic operation or on other occasions. Warning Before operating, maintaining or checking the pump, ensure that all the relevant workers are informed of the operation and that there are no workers in the dangerous zone.
Oil seal type Load side Load side Model (Pump section) (Bearing Non-load side section) VKA86AH-e~VKA92AH-e DS17355 VC20356 DS20305 VKA56AQ-e~VKA66AQ-e Any other models DS17355 DS20325 DS20305 High-frequency sound (mechanical squeak) that may occasionally be generated from the shaft seal is not a symptom of a pump failure. You can continue to use the pump with the same good quality.
If you need to carry out work that requires disassembly of the unit—such as replacement of parts, repairs, or inspection, ask the vendor or the service provider specified by the manufacturer, or Teral Inc. Improper work may lead to malfunctions or accidents.
Troubleshooting The following table lists causes of failures and their measures. In the event of a failure, however, you should carefully investigate the problem and ask the vendor to carry out any measures that are considered difficult. Problem Cause (Reference page) Measures (Reference page) Operator * Check the wires and connections.
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* t is specified for reference because the range where the measure can be taken varies depending on the user. Even for the above problems for which “User” is specified as the Operator, ask the vendor or contact Teral Inc. if you have any questions.
If you find any abnormal conditions of the pump in use, stop the pump operation immediately and then confirm the abnormal conditions. (Refer to Section “6. Troubleshooting [page 6-1].”) If your pump needs disassembly, inspection and repair, contact the vendor from which you purchased or Teral Inc. (Refer to the end of this document.) Never repair by yourself because it may pose a danger.
Disposal Precautions for disposal When detaching the pump from the equipment for disposal or replacement of the pump, be sure to turn off the mains power in advance. Warning Before detaching the pump, turn off the mains power without fail. Failure to observe this may lead to a danger because the pump may suddenly start in automatic operation or on other occasions.
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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 2016 06 TP‑452‑00...
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