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Summary of Contents for IWAKI PUMPS L Series
- Page 1 IWAKI L series Metering Pump Electrical servo unit Instruction Manual Read this manual before use of product...
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Page 2: Table Of Contents
Thank you for selecting an Iwaki Electrical Servo Unit for the L series (LK, LG, LK-A, -B and -C) metering pump. This instruction manual deals with "Safety Instructions", "Outline", "Installation", "Operation" and "Maintenance" sections. Please read through this instruction manual to ensure the optimum performance, safety and service of your pump. -
Page 3: Important Instruction
Important instruction For the Safe and Correct Handling of the Product ● "Safety Instruction" section deals with important details about handling of the product. Before use, read this section carefully for the prevention of personal injury or property damage. ● Observe the instructions accompanied with "WARNING" or "CAUTION" in this manual. These instructions are very important for protecting users from dangerous situations. -
Page 4: Safety Instructions
Safety instructions For the prevention of damage, electrical shock and fire WARNING ● Turn off the power supply Risk of electrical shock. Be sure to turn power supply off to stop the pump, electrical servo unit and related devices before engaging in any work. - Page 5 Safety instructions Carriage & Installation WARNING ● Use strong ropes (chains) for lifting up the pump Serious injury may result if lifting ropes (chains) break. Check lifting ropes (chains) are strong enough before use. ● Use eye bolts Use eye bolts to lift the pump. Otherwise the pump may break or fall down, resulting serious injury.
- Page 6 Safety instructions Operation WARNING ● Qualified operator only This product must be operated/controlled by a qualified operator(s) with a full understanding of the electrical servo. Caution ● Do not modify the electrical servo Risk of electrical shock. We are not responsible for any accidents or dam- age due to modification.
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Page 7: Outline
Outline 1. Unpacking & Inspection ......6 2. Principle of Operation ......6 3. Specifications ........8 4. Part names ........... 9 - 5 -... -
Page 8: Unpacking & Inspection
Outline 1. Unpacking & Inspection After unpacking the pump, check the following points to see if the product conforms to your order. If you find any problems, contact us or your near- est dealer. 1. Does the information such as model on the name- plate correspond to your order? 2. - Page 9 Outline ■ Compositions of an electrical servo unit The electrical servo unit is composed of a potentiometer which changes the stroke length into the electrical signal, a control motor which adjusts the stroke length and a limit switch which protects the mechanism. Potentiometer The potentiometer changes the stroke length into the electrical signal in order to feed it back to the E.E.
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Page 10: Specifications
Outline 3. Specifications ■ Electrical servo unit Pump model LK, LK-F 11, 21, 22 31, 32 45, 47 55, 57 05, 11, 20, 40 Control motor output 0.42A/0.45A (100V, 50/60Hz), 0.25A (220V, 50Hz), 0.25A (220V, 60Hz), Rated current of the control motor 0.2A (240V, 50Hz) 6 microF (100V, 50/60Hz), 1.2 microF (220V, 50Hz), Capacitance of a capacitor... -
Page 11: Part Names
Outline 4. Part names ■ LK, LG type 420, 463, 467 419, 463 426 402 428 403 429 201 236 212 211 232 209 409 400 401 438 Adjusting hole 481 480 401 410 451, 454 456, 443 - 9 -... - Page 12 Outline 404 422 423 413 417412 430 416 431 441, 451 469, 470, 471, 472, 473 444, BLACK (MOTOR) BROWN WHITE BLUE YELLOW View A 421 424 Name of parts Q'ty Remarks Name of parts Q'ty Remarks 201 Case 432 Terminal block 209 Stroke length adjusting shaft 433 Bell mouth 211 Dial...
- Page 13 Outline ■ LK-A, -B, -C type 440, 449, 451 454, 455 449,438 444,450 412 439 415 413 408 447 419 445 427 405 441,448,452 430 433 432 414 440, 451 453 440, 451 443,456 Name of parts Q'ty Remarks Name of parts Q'ty Remarks 209 Control shaft...
- Page 14 Installation 1. Wiring ..........13 - 12 -...
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Page 15: Wiring
Installation 1. Wiring Connect wires via bellmouths to respective terminals according to terminal symbols. Keep a certain allowance for terminals. The terminals of the LK and LG are located at the rear end. Remove the cover B (405) with a 8mm spanner to connect wires. The terminals of the LK-A, -B and -C are in the servo unit. - Page 16 Operation 1. Operation ..........15 - 14 -...
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Page 17: Operation
Operation 1. Operation ■ Before operation The pump and servo unit are adjusted according to the user's specification before delivery. Check the operation according to the following procedures before starting continuous operation. NOTE: Be sure to fully open both discharge and suction valves before operation. ■... - Page 18 Operation ■ Manual operation (Remote control operation) Operation check 1. Push the AUTO/MAN key to enter MANUAL mode (MANUAL lights). 2. Press and hold the DOWN key until the servo unit stops. Check the stroke length dial to see if the stroke length is between 0 and -1%.
- Page 19 Maintenance 1. Adjustment .......... 18 2. Troubleshooting ........20 3. Wear parts .......... 20 - 17 -...
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Page 20: Maintenance 1. Adjustment
Maintenance 1. Adjustment The servo unit is tuned before shipment in factory, so adjustment is not required in general. However, if the deviation between the E.E. positioner and the stoke length dial become large or if gears step out and the potentiometer rotates, adjust the servo unit according to the following pro- cedure. - Page 21 Maintenance 6. Engage the Driven gear(420) to the Drive gear(419). Be careful not to rotate the potentiometer. And then connect lead wires of the E.E. positioner. 7. Turn ON the driving motor and E.E. positioner. Push the AUTO/MAN key to enter the MANUAL mode.
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Page 22: Troubleshooting
Maintenance 2. Troubleshooting Failure Root cause Measures ● The control motor does not ● The thermal protector in the ○ Stop the servo unit until tem- rotate. control motor functions. perature reduces. ● The stroke length indication of ● The positioner is powered off. ○... - Page 23 IWAKI Norge AS TEL : (47)66 81 16 60 FAX : 66 81 16 61 China IWAKI Pumps (Guandong) Co., Ltd. TEL : (86)750 3866228 FAX : 750 3866278 Singapore IWAKI Singapore Pte. Ltd. TEL : (65)6316 2028 FAX : 6316 3221 China GFTZ IWAKI Engineering &...
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