Scheduling a regular, thorough inspection is an essential step in safeguarding the efficiency and lifespan of your cooling tower. Check wood for decay, and check for corrosion of steel. Finally, it was found that the cooling tower can operate under all the given approaches (5 °C, 6°C, 7°C and 8 °C) at the blade angle of 67 ° by maintaining the cooling range of 5 °C, wet bulb temperature of 26°C, and water flow rate of 3.9 m3/h. Cooling Tower Hygiene An unclean tower can be an amplifier of unhealthy biological agents. Do not replace a 1,200-rpm motor with a 1,800-rpm motor using the same fan blade, as the increased speed can cause the motor Louvers Make sure that all louvers are in place. Examine elastomeric flex elements for cracks, brittleness or other signs of wear. Safety belts or single lanyard systems do not provide adequate fall protection. Two lanyards allow movement while providing fall protection at all times. Look for any leaks between adjoining stack segments. Makeup Valve Operate the float valve or float switch manually to make sure that it opens and closes properly. Check alignment using any approved method, such as a dial indicator or optical device. Check for loose or damaged bearings. Write the degree on a piece of paper. ). M. R. Associates Beleghata, Kolkata No. Cooling Tower Fan Blade Angle Calculation. Inspect steel walkways for evidence of corrosion. Pay particular attention to any damage or deterioration that may pose a potential safety hazard for operating and maintenance personnel. Key words: blade angles, performance of a small cooling tower Is it a 1994 Resco 3 Ton unit. Do you dread changing the angle on your saw blade knowing that you can't depend on the built in saw scale. Blades that are set at a lower angle will slice the air but not create proper air circulation. 66 0 obj <> endobj Belt Drive Fan System Check the condition of the pulleys, looking for any corrosion or loss of metal in the pulley grooves or on the webs. Always follow safety and health regulations published by local authorities. If necessary, temporarily remove a nozzle and disassemble it to look for internal clogging. Use these instructions to perform a thorough inspection on virtually any cooling tower. %%EOF Curve "A" shows the performance of an extruded type blade with no hub seal disc. Many driveshafts consist of a single span. Safety first! Tear off a small piece of adhesive tape approximately 2 inches long and write "1" on it with your permanent marker. Fan Cylinder (Shrouds) Check overall condition of the material, paying particular attention to any welds in steel shrouds. h�b```f``�g`e``�fd@ A�(GcÁ��E���n����p(�zG��Bf��⇒l�R�q�ۅD�\�fz�%ED��$��2�D�Ɇ����@�a�00=/��@,Ia`�gY�����|�y Basin Flow-Control Valves Inspect valve components for corrosion or signs of wear. 104 0 obj <>stream 87 0 obj <>/Filter/FlateDecode/ID[<0488E65975F1D38EC3A12DA806E904E2><707517D06574204E9A3C29A5853053F4>]/Index[66 39]/Info 65 0 R/Length 104/Prev 194722/Root 67 0 R/Size 105/Type/XRef/W[1 3 1]>>stream Examine metallic flex elements very carefully for signs of corrosion or fatigue. Use our online rep finder, or use this inspection request form! The cooling tower blades move large volumes of air quietly and efficiently. 20/3, Chawl Patty Road, Beleghata, Kolkata - 700010, Dist. â¢ The vibration levels at both motor & fan speed are to be measured at the motor while the vibration levels at the blade-pass frequency is to be measured at the fan â¦ Splash fill consists of wood or plastic bars in various shapes, supported in a fixed spacing and orientation, usually using a wire or fiberglass grid. Always refer to your tower’s user manual if you have specific questions about your cooling tower. endstream endobj 67 0 obj <> endobj 68 0 obj <> endobj 69 0 obj <>stream Good biological control is indicated by clean, clear water with no green or brown algae below the water line. In either case, consider replacing asbestos fill immediately. Supplies compliant with the appropriate safety legislation off a small piece of adhesive tape approximately 2 inches long write. 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