Three Lobes Roots Blower Instruction Manual Welcome to purchase the three lobes roots blower produced by us. You shall read this instruction manual seriously before you use this product in order to ensure a long-time, safe and highly efficient application. Greentech International (Zhangqiu) Co., Ltd. Address: Mingshui, Zhangqiu City, Shandong Province, China Tel: 86-531-83117088 Email: greentech@vip.163.com http://www.china-blower.com
Ⅰ Operation Principle of the Three Lobes Roots Blower The operation principle of the three lobes roots blower: the engine drives the blower with narrow v-belt to discharge the air fed at the inlet port out of the air outlet through rotary pressure boost of the three- lobe type impeller. Ⅱ Installation Requirements of the Blower: 1. The foundation shall be solid with flat surface 10cm higher than the ground. 2. Sufficient room shall be arranged around the blower to satisfy the requirement for overhaul and dismounting. 3. The ambient temperature for the blower operation shall be within 40. If the temperature is beyond that limit, certain measures shall be taken to reduce the temperature; otherwise, the service life of the blower will be curtailed. 4. Rain proof shed shall be set if the blower is mounted outside. 5. The rated pressure boost value specified on the nameplate shall not be exceeded to prevent the engine from over burning. Ⅲ Requirements on the Pipeline 1. The blower pipeline shall be connected tightly without air leakage and the support shall be set at appropriate location. 2. The pipeline material can sustain exhaust temperature and pressure. (try to adopt steel pipes) 3. The pipeline inside shall be clean and without foreign substance; certain measures shall be taken to stop the foreign substance from coming into the pipeline. 4. Check valve shall be installed on the pipeline to stop the back flow created by the blower reversion from entering into the blower. Attention: the check valve shall be installed on the horizontal pipeline. 5. In the situation of parallel operation of many blowers, brake valves must be mounted respectively on each branch pipeline (as one blower needs examine and repair, the corresponding pipeline can be cut off). 6. Drain cock shall be mounted on the pipeline to prevent the blower from loaded start-up; the drain cock shall not be shut down until the blower starts with no load, and then the loaded operation of the blower begins. 1
7. As to the blower with water cooling system, regulation valve shall be equipped in front of the cooling water inlet. Ⅳ Notices Before the Start-up of the Blower 1. Check whether the grounding bolts are connected tightly. 2. Wipe out foreign substance such as welding slag in the pipeline interior. 3. Completely open the valve, otherwise, the blower will be damaged due to its over-loaded operation. 4. Fill gear oil. As the blower leaves the factory, there is no gear oil in its oil tank, so you shall fill it yourself. In stoppage situation, it is suitable to add the oil to the center level of the oil window as more will cause oil leakage. 5. Fill grease lubricant with oil gun until the grease overflows out of the spill hole on the gland (the blower has been filled with grease lubricant before delivery). 6. Check the tightness degree of the narrow v-belt and the location of the pulley. The location of the pulley can be regulated with ruler and the tightness degree of the v-belt can be adjusted according to the following graph. The belt is loosened over a period of usage when the readjustment is in demand. Type of the Blower W (kg) & (mm) 50H 1~2 4 65H 1~1.7 4.5 80H 1.5~2.5 4.5 100H 2~3 5.5 125H 1.5~3 6.5 150H 3.5~5 7 175H 3.5~5 7 200H 4~5.5 8 250H 4~5.5 8 300H 4~5.5 8 7. Check whether the voltage and frequency of the power supply is in accordance with the requirement of the rating plate. 8. Check the rotation direction of the pulley in the face of it, finding that it rotates in 2
a counterclockwise direction. 9. Rotate the pulley by hand to make sure there is no abnormal phenomenon before the blower start-up. 10.Open the cooling water switch before the blower start-up; at the time of stoppage, turn down the blower before cutting off the water. Ⅴ Operation Description 1. At the initial stage of operation, because of the sticky grease lubricant, there may be such phenomenon as noise and over high current that can disappear after ten to twenty minutes operation. 2. The regulation of air flow rate can be carried out by changing the rotation speed of the blower or the number of the flooding pipeline. 3. The blower shall work under the pressure rated by the nameplate. The switch of the pressure meter shall be placed at the off position during the operation of the blower. The switch can not be opened unless there is need of testing the pressure and shall be closed immediately after the estimation. 4. There is even noise difference between the blowers of the same type. This can be caused by the different location and piping of the blower in mechanical room. 5. Inspect whether the filter core of the inlet muffler is blocked during blower application. The blockage may increase the motor power and even damage the motor, hence prompt cleaning is in demand. 6. As the boost pressure of the blower is higher than 58.8kpa, the user is advised to install the water cooling system with cooling water 25, pressure 196-294kpa, flow rate 8-13L/min. The blower with cooling system shares the same appearance with the ordinary blower. The only difference is that the main and auxiliary tanks are installed with water inlet and outlet interfaces which can be connected the inlet and outlet water as required. 3
Ⅵ Routine Maintenance and Overhaul of the Blower Item for Overhaul Period Maintenance Remarks Overhaul Day to Day 3 Months 1 Year 3~4 Years Pressure Below the Value on the Nameplate Flow Rate Within 10% of the Nameplate Value Noise No Abnormal Noise Vibration No Abnormal Vibration Inlet Below 40 Temperature Current Below the Motor Nameplate Value Voltage Within 10% of the Motor Nameplate Value Tension of Belt Location of Pulley Gear Oil Capacity To the Center Position of Oil Gauge Sweep Air Cleaner Inspect Gear Oil Supplement or Change Inspect Bearing Grease Lubricant Fill Once Every Other Week and Change Once Every Three Months Change V-belt Change Filter Core Clean Once a Month Change Bearing Change Gasket Oil Seal Inspect and Change Gear Attentions: In the initial stage of operation, the gear oil must be renewed after one 4
month of application. 1 Gear Oil: N220 L-CKC Kinematical Viscosity mm2/s (40 ): 198~ 242 Flashing Point (no less than): 200 Gear oil quantity table Model Oil box Oil quantity Each blower 50H/65H Gear end oil box 0.4L Drive end oil box 0.3L 0.7L 80H/100H Gear end oil box 0.5L Drive end oil box 0.35L 0.85L 125H Gear end oil box 0.8L Drive end oil box 0.5L 1.3L Ⅶ Instruction of the Safety Valve 1. Notices for Application Given that the safety valve shall work under low pressure, the interface between the valve seat and valve body has gone through precision finishing. If there is foreign substance sticking around the valve seat, it will be attracted on the interface as the valve body moves to lead to valve body leakage. In addition, please concern that whether the safety valve suffers strike during the process of transportation which may be another reason for valve body leakage. 2. Setting Method of the Safety Valve Principle: the safety valve opens as the load surpasses its setting pressure so as to avoid the blower failure. Setting Method: 1 Start the blower. 2 Tighten the brake valve while watching the pressure gauge to make the pressure exceed the setting pressure by about 10%. 3 Loosen the lock nut and revolve the regulation screw in a counterclockwise direction until air is discharged out of the safety valve. 5
4 In the process of tightening the brake valve, if the safety valve has discharged air before the 6 5 4 3 pressure reaches the setting value, please revolve the regulation screw again in a clockwise direction to the position that the air can not be exhausted, and then revolve it again in an opposite direction until the air is right exhausted. (Clockwise rotation makes the setting pressure higher; counterclockwise rotation makes the setting pressure lower). 5 Tighten the lock nut and regulation screw. 6 Loosen the brake valve to reduce pressure so that the safety valve does not discharge air any more. 7 Inspect whether the safety valve operates under the setting pressure and tighten the brake valve again to raise pressure. Attention: actually as there is load on the exhaust side (water in aerator tank reaches the fixed level), if the brake valve opens completely, the setting pressure will be around10% higher than the practical load. 2 1 6
Ⅷ Reference Drawing of the Blower Piping Attention: the check valve must be mounted on the horizontal pipeline and can open and close normally. 7
Ⅸ Exterior Dimensional Drawing of the Drive Type V-belt Unit: mm Sign Type Caliber A B C D E F G H J K 50H 50A 250 150 120 895 185 179 560 410 100-65H 65A 250 150 130 970 205 202 650 450 100-80H 80A 290 180 145 1130 220 225 700 500 100-100H 100A 290 180 155 1255 260 265 780 580 100-125H 125A 345 195 190 1515 295 294 860 700 110-150H 150A 385 220 210 1730 375 377 1060 750 160-175H 175A 490 275 230 2163 470 412 1250 750 230-200H 200A 593 378 256 2210 525 550 1400 1000 180 500 250H 250A 760 400 425 2785 668 590 1900 1490 210 745 300H 300A 760 400 430 2820 756 677 1900 1490 210 745 Sign Type Caliber L M N O P Q n R S Weight (kg) 50H 50A - 300 115 155 15 80 4 450 730 70 65H 65A - 340 135 175 15 80 4 500 780 81 80H 80A - 360 130 200 15 80 4 530 860 123 8
100H 100A - 470 170 270 15 80 4 600 930 157 125H 125A - 470 185 255 15 100 4 710 1230 235 150H 150A - 590 255 295 20 100 4 860 1335 394 175H 175A - 650 286 316 22 100 4 887 1600 695 200H 200A 500 755 360 345 25 120 6 1080 1765 900 250H 250A 745 950 390 500 30 160 6-Φ26 1258 2400 1758 300H 300A 745 950 510 380 30 160 6-Φ26 1433 2400 2256 Attention: The weight of motor is excluded. Users can ask the company for the electronic CAD of the exterior dimension according to the type of the order. Ⅹ Exterior Dimension Drawing of the Direct-coupled Blower Unit: mm Type Sign Caliber A B C D E F G H J 50H 50A 570 179 135 895 152 230 540 420 60 65H 65A 610 202 145 970 192 230 600 440 80 80H 80A 700 225 165 1130 217 280 650 500 75 100H 100A 900 265 175 1255 234 280 850 630 110 125H 125A 945 294 205 1525 260 345 920 710 105 150H 150A 1155 377 225 1745 305 385 1150 950 100 175H 200A 1570 550 276 2230 405 593 1600 1300 150 9
200H 250A 1847 596 445 2570 520 680 2200 1800 200 250H 300A 2167 683 470 2820 520 670 2500 2000 250 Type Sign Caliber K L M N O P Q R n-φ1 Weight (kg) 50H 50A -- -- 260 220 122 20 80 60 4 72 65H 65A -- -- 300 260 122 20 80 80 4 84 80H 80A -- -- 370 330 147 20 80 75 4 132 100H 100A -- -- 400 360 114 20 80 110 4 168 125H 125A 355 355 430 390 175 20 100 105 4 245 150H 150A 475 475 500 455 190 22.5 100 165 4 408 175H 200A 650 650 650 605 348 22.5 120 240 6 900 200H 250A 900 900 1020 950 250 40 200 250 6-26 1708 250H 300A 1000 1000 1020 950 240 40 200 270 6-26 2198 Attention: The weight of motor is excluded. Users can ask the company for the electronic CAD of the exterior dimension according to the type of the order. 10
Ⅺ Problem Shooting Fault Cause Measure Can be reversed by The motor is damaged. Repair or change the motor. Not hand. rotate Can not be rotated The rotor is blocked. Take it apart to repair. by hand. There is foreign substance inside. Take it apart to repair. Be slippery and the v-belt is over Regulate the tension of the belt. tight or loose. The pulley is not in right position. Resume the pulley to right position. There is friction between pulley Regulate the belt cover to right Abnormal Noise or and belt cover. position. Vibration The bearing oil is inadequate or Renew the oil. aged. The gear oil is inadequate or Renew the oil. aged. The safety valve is leaking air. Regulate the safety valve. Insufficient Foundation Strength Strengthen the foundation. Pipeline Resonance Remove it with muffler and support and so on. Rotate Exhaust pressure goes up Refer to the *explanation. Blower abnormally. The grounding bolt is too loose. Rotor Interruption There is foreign substance in the case. Check valve is damaged. The exhaust pressure goes up Tighten it. Take it apart to repair. Take it apart to repair. Change a new one. Refer to the *explanation. Over Heat suddenly. The temperature in the blower Increase ventilation. room goes up (over 40 ) Insufficient Flow Rate The suction muffler is blocked. Pipeline Leakage The suction muffler is blocked. The safety valve is leaking air. The belt is slippery. Clean/ change the filter. Tighten the joint. Clean/ change the filter. Regulate the safety valve. Regulate the tension of the belt. 11
The exhaust pressure goes up Refer to the *explanation. suddenly. *Exhaust pressure goes up suddenly. The valve is closed. The water level increases. The inlet pipe is blocked. The pipeline is blocked. The valve is broken or revolved in the wrong direction. The airflow is over strong. Fully open the valve. Regulate the water level. Wipe out the foreign substance. Wipe out the foreign substance. Change or revolve it in the opposite direction. Reduce the rotation speed or air exhaust. Oil Leakage There is too much gear oil. Fill the oil to the center of the oil gauge (stalling). Improper Switch or Circuit Connect or repair it correctly. Can be reversed by Connection Note hand. The fuse is disconnected or has Examine and repair or renew it. rotate only one wire. The power supply is abnormal. Improve the power supply equipment. Motor The motor is damaged. Repair or change the motor. Can not be rotated by hand. The bearing is damaged. The motor is damaged. Change the bearing. Repair or change the motor. Reverse Wrong Connection Inspect the joint. Overloading Regulate the air exhaust pressure. Rotate Over Heat The power supply is abnormal. Improve the power supply equipment. The temperature in the blower Increase the ventilation. room goes up (over 40 ) Rotation speed is too The power supply is abnormal. Improve the power supply low. equipment. Overloading Regulate the air exhaust pressure. 12
Ⅻ After-sale Service and Maintenance 1. Under the circumstance of regular service, the one-year warranty for free from the day of product delivery is available in the event of failure! However, the maintenance in the following situations shall be paid: 1 The failure happens after the user conducts the repair by oneself during the warranty period. 2 The failure is caused by the following facts: first, improper application; second, the repair is not conducted by the professional maintenance personnel designated by this company; third, the user reconstructs the machine by oneself. 3 The failure is caused by natural disaster. 4 The failure is caused by the fact that the machine is not repaired or maintained according to the requirement of this instruction manual. 5 The failure is caused by the fact that the user does not apply the standard component designated by this company. 6 The change of easy workout parts. 7 The failure is not due to improper design or production. 2. In the event of blower failure, please contact with the agency that is responsible for the order first and tell them the type, serial number and purchase date of your product. You shall fill out the table below according to the blower nameplate for the convenience of maintenance. Type Production Serial Number Bearing Power Rotation Speed Pressure Delivery Date Name of the Client 13
Distinguished Users, You are welcome to choose the Three Lobes Roots Blower produced by us. Thanks for your trust and support to us. To be responsible and provide timely service for you in future, we carry out quality tracing towards all the products. After you receive the product, you are appreciated to fill out the quality tracing card and mail it to our business department. Thanks for your cooperation! Name of the Company: Greentech International (Zhangqiu) Co., Ltd. Address: Mingshui, Zhangqiu City, Shandong Province, China Tel: 86-531-83117088 Email: greentech@vip.163.com http://www.china-blower.com Quality Tracing Card Postal Address Contact Tel and Fax Postcode Working Unit Type of the Product Serial No. of the Product Delivery Date Suggestion and Quality Situation 14