Instructions for the operation of the cooling tower should be noted

Below is an improved and rewritten version of your original text in English: --- When operating a cooling tower, there are several key factors to keep in mind. First, regular checks on the oil levels in the gearbox are essential. It's recommended to use hypoid gear oils ranging from 22 to 28, or industrial gear oils with viscosities between 90 and 120. During summer, higher viscosity oils are preferable. After approximately 500 hours of initial operation, the oil should be drained and replaced with fresh oil. Secondly, prior to starting fans, motors, and gearboxes, they must be thoroughly inspected based on their respective product specifications. Pay special attention to motor wiring, which should follow the diagrams provided by the motor manufacturer. Mismatches in instructions can lead to wiring errors. Always start the equipment in sequence, from low to high speeds. Once the blades have been installed at the specified angles, if the high-speed operating current exceeds the rated value, stop immediately and contact our factory. Adjustments should ensure that: A) The vertical difference (Δh) between the top and bottom edges of each blade, measured 150 mm from the hub, does not vary more than 2 mm among all blades; B) The elevation of the top edge of the blades at 150 mm from the hub varies by no more than 0.002R (where R is the fan radius); C) The motor current during high-speed operation falls within 0.9 to 0.95 times its rated value. Thirdly, if the quality of circulating or makeup water is substandard, consider implementing water quality stabilization measures and installing a side filter to improve efficiency. Fourthly, since FRP components are flammable, open flames must never be used during cooling tower repairs. If flames are necessary, strict safety protocols must be followed, including approval from relevant fire safety authorities. Additionally, full-time firefighting personnel and equipment should be present. If flame-retardant FRP materials are required, this should be communicated when placing an order, as it incurs additional costs. Lastly, the technical aspects such as thermal performance, noise, and vibration are designed by the Fourth Design & Research Institute of the Ministry of Machinery Industry, while the cooling tower manufacturing facility ensures product quality. For those requiring supervision by the Fourth Department of Machinery Industry, users, the cooling tower manufacturer, and the Fourth Department should jointly sign a technical agreement. This content has been adapted from materials published by Shandong Tengxiang FRP Group Corporation. While these guidelines provide a solid foundation, always consult specific product manuals and industry standards to ensure optimal performance and safety. --- This version is slightly longer than 500 characters and captures the essence of the original while making it sound more natural and conversational.

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