Related Manuals for Teral LHW-e
Summary of Contents for Teral LHW-e
- Page 1 Coolant Pump Instruction Manual Coolant Pump Model : LHW-e / LPW-e / LPW-7W / LKW-e LFE / LFE-e...
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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 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). In addition, prohibited or mandatory actions as well as cautions are indicated with a graphic symbol. - Page 5 Do not put your fingers or foreign objects into any For overhaul, replacement of parts, or repairs, ask openings or rotating part of the motor during the vendor or the service center specified by Teral. operation. If unskilled personnel carry out work that requires special knowledge, it may lead to an accident or failure.
- Page 6 In the event of an alarm or abnormal condition that cannot be resolved, immediately stop the Do not run the pump with tools or other objects operation, turn off the power, and then contact Teral placed on the unit. or its service provider.
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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
If air cannot be released from the pump to the atmosphere on the discharge piping, you can discharge air using this valve to prevent dry running. Immersion detecting hole (LHW-e, LKW-e, LPW40/50-e，LPW40/50-7W) If liquid leakage occurred from the immersion detecting hole, check the shaft sealing part. -
Page 9: Standard Specifications
If you have purchased our standard product, refer to the “Standard specifications” table. If you have also purchased a customized product with special specifications, refer to the delivery specifications. ・Standard specifications ※ 1 Model LHW-e LKW-e LFE/LFE-e LPW-e LPW-7W Nominal diameter(mm) -
Page 10: Installation
3. Installation Before using the pump Upon receiving the pump, check the following points first. The container may greatly incline depending on its center of gravity. Caution Before unpacking the delivered container, ensure that the container is placed in the correct orientation (not upside down). Pay special attention to nails especially when opening a wooden crate. - Page 11 In case that pipes and a strainer models Always keep the liquid level in the tank (oil are installed (except for LHW-e) tank) above the Minimum liquid level. Keep the suction port of the pump at least t (8) For model LKW-D-e, refer to the drawing below...
- Page 12 (12) To lift the pump, pass a rope or the like through the hanging hole of a casing for the model LHW-e, LPW40/50-e, LPW40/50-7W and pass a rope or the like through the eyebolt of motor for LPW65-e, LKW-e, LFE/LFE-e.
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Page 13: Precautions For Piping Work
Precautions for piping work (1) The pipes must be as short and straight as possible with minimal joints and valves. Use pipes whose bore size is equal to or larger than the discharge port of the pump. If the piping size is small or there are many bends, the discharge rate may become low. -
Page 14: Precautions For Wiring Work
Therefore, when switching from an IE1 motor-equipped product, it is necessary to verify the applicability of its ground fault interrupter and overload protection device. 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 15 (3) Be sure to attach a ground wire to prevent an electric shock. Connect the ground wire to the ground terminal inside the terminal box of the motor. Warning Connecting a ground wire to gas or water pipes is illegal and extremely dangerous.
- Page 16 Ensure that the minimum frequency is set to 20Hz. (Contact us if you need to run the drive at 20Hz or lower.) • When driving a 400V-class motor, contact Teral. In some cases it might be necessary to take measures for inverter surge. •...
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Page 17: Operation
4. 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. -
Page 18: Running The Pump (Test Operation)
(6) If you run the motor at variable speed with the inverter, be sure to check the following points through test operations. The pump may produce resonance depending on installation conditions. If the pump · produces resonance, avoid that frequency. If the operation frequency is low or the dynamic viscosity of the pumping liquid is high, the ·... - Page 19 Too hot liquid may reduce the service life of the motor or damage the shaft seal. Model Minimum flow of liquid (L/min) LHW-e, LFE/LFE-e LKW-e, LPW-e,LPW-7W...
- Page 20 (7) For the frequency of the startups and shutdowns, refer to the table below. Model Allowable frequency of the startups and shutdowns (times / hour) LHW-e, LPW40/50-e, LPW40/50-7W, LKW-e, LFE/LFE-e LPW65-e Caution Minimize the frequency of startups and shutdowns of the pump because their high frequency may quickly damage the pump.
- Page 21 (12) Do not allow a large amount of cutting powder from entering the pump. Failure to observe this may clog the pump strainer, damage the pump, or significantly deteriorate the performance. If the pump is used in processes such as grinding, milling, or end milling in which a large amount of cutting powder is discharged, select the pump carefully.
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Page 22: Maintenance And Inspection
Caution For overhaul, replacement of parts, or repairs, ask the vendor, the service center specified by Teral, or your nearest office of Teral. Incorrect work may cause a failure or accident. Precautions for maintenance and inspection (1) Observe the following points, in particular, during daily inspection. -
Page 23: Replacement Of The V-Ring (For Lpw65-E)
In the event of a power failure, be sure to turn off the power. The pump may suddenly start up on restoration of the power, which leads to a danger. Warning In the event of a power failure, be sure to turn off the power switch. The pump may suddenly start up on restoration of the power, which leads to a danger. - Page 24 Keep clearance on both sides equal. Coupling ① ② Coupling bolt(hexagon socket screw) Knock pin ③ Bolt for motor ④ ⑤ Cross-recessed head screw Baffle plate ⑥ O-ring ⑦ ⑧ V-ring ⑨ Deflector Motor main shaft ⑩ ⑪ Pump main shaft (1) Disassembly procedure ①...
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Page 25: Maintenance Checklist
When you replace the parts, it is recommended to use a grease equivalent to the following. LHW-e: Bearings by NTN (MP-1 grease) LPW40/50-e, LKW-e, LFE/LFE-e: Bearing by NSK (EA2 grease), Bearings by NACHI(FNS3D grease) ... -
Page 26: 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) Wiring is disconnected or broken. - Page 27 Problem Cause (Reference page) Action (Reference page) Contact Teral or our servicing companies because The bearing is worn or damaged. (5-1) disassembly and inspection are required. Overheat of The grease is deteriorated. (5-1) Replace the bearing. (5-1) bearing Incorrect installation of the pump and the Check and correctly install them.
- Page 28 Head Office 230, Moriwake, Miyuyki-cho, Fukuyama-city, Hiroshima, 720-0003, Japan Tel.084-955-1111 Fax.084-955-5777 Overseas Div. TERAL Koraku Bldg., 2-3-27, Koraku, Bunkyo-ku, Tokyo, 112-0004, Japan Tel.03-3819-6890 Fax.03-3818-6790 TP-462-01...
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