T/KT SDN2401-2024 Ground-based heating system cleaning and maintenance operation technical service specifications

Scope

Main Technical Content: 8. Floor Heating Cleaning Operation Guidelines 8.1 Physical Pulse Cleaning Operation Guidelines 8.1.1 Physical Pulse Cleaning High-pressure pulse cleaning uses a fully automatic intelligent pulse geothermal cleaning machine. By applying the principle of controlled air pressure pulses, a powerful water jet is generated at high pressure to rapidly impact the pipeline. The cavitation principle and water hammer phenomenon during the air-water pulse process also impact the inner wall of the pipe, quickly removing rust and sediment from the pipe wall and discharging them outside the system. This process is repeated to achieve the cleaning goal. In addition to being widely used for cleaning floor heating pipelines, the pulse cleaning machine can also clean radiator plates. 8.1.1.1 Cleaning Steps: - Protective isolation (all tools and equipment are placed on a waterproof pad to avoid polluting the environment and marble). - Before starting the test run of the boiler, first label the electric actuators of the manifold collectors from left to right as 1, 2, 3, 4, 5. Then remove the electric actuators and check whether the valve cores of the manifolds are properly lifted. If not, the valve cores need to be reset (with the needle being pulled out about 3 mm). - Check whether all main pipeline valves are open (there are two valves on the manifold and two floor heating valves under the boiler). After ensuring the water path is open, check whether the gas valves are open. - After all valves are open, switch the boiler to heating mode to verify normal combustion and wait for the boiler to ignite. - Check whether all valve interfaces are leaking or show signs of leakage to ensure the system is free from leaks. 8.1.1.2 Connecting the Cleaning Equipment After igniting the boiler, check the temperature of the manifold collectors. If there is temperature, it indicates a manifold collector; if not, it indicates a water collector. Then connect

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