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GOLDENSAIL
19
2022
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05
Cleaning process of plate heat exchanger
Author:
1. Isolate the equipment system and drain the water in the heat exchanger.
2. Use high-pressure water to clean the sludge, algae and other impurities remaining in the pipeline, and then close the system.
3. Install a ball valve (not less than 1 inch = 2.54 cm) between the isolation valve and the exchanger, and both inlet and return ports should be installed.
4. Connect the transfer pump and connecting pipe, so that the cleaning agent is pumped in from the bottom of the heat exchanger and flows out from the top.
5. Start to pump the required Fustec cleaning agent into the heat exchanger (the proportion can be adjusted according to the specific situation).
6. Repeat the cycle cleaning to the recommended cleaning time. With the progress of the cycle and the dissolution of the sediment, the gas generated during the reaction will also increase, and the excess air should be expelled through the bleed valve at any time. As the air is discharged, the space in the heat exchanger will increase, and appropriate water can be added. Do not inject a large amount of water at the beginning, which may cause water overflow.
7. The effectiveness of the cleaning agent should be checked regularly during the cycle, which can be determined by using PH test paper. If the solution is kept at a pH of 2-3, the cleaning agent is still effective. If the pH value of the cleaning agent reaches 5-6, it is necessary to add an appropriate amount of Fustec cleaning agent. The pH of the final solution remained unchanged for 30 minutes at 2-3, proving that the cleaning effect was achieved. Note: Fostec cleaning agent can be recycled and reused, and the discharge will cause waste.
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