What should be noted when restarting VOC waste gas treatment equipment after shutdown?

    VOCWaste gas treatment equipmentWhat should be noted when restarting after shutdown?

    VOCwaste gas treatmentAfter the equipment is shut down and restarted, there are several key steps that cannot be omitted.

First, check the pressure of the refrigeration system. For equipment equipped with condensing units, there may be slight refrigerant leakage after prolonged shutdown. Observe the readings of the high and low pressure gauges before starting up. If the pressure is significantly low, it may indicate a leakage point, and starting the compressor recklessly may cause damage. Leak detection, refrigerant replenishment, and confirmation of normal pressure are required before starting the machine.

Check the oil level and manual turning. Check if the oil level of the compressor is within the normal range. If the oil level is too low, it will cause poor lubrication during startup. Rotate the coupling by hand to confirm that there is no jamming or abnormal noise, which can avoid mechanical component jamming caused by long-term shutdown.

Confirm the valve status. The inlet and return valves of the equipment should be in the open position, and the bypass valve should be in the closed state. Incorrect valve status can cause airflow short circuit or pressure build-up.

Power on self-test. After connecting the power supply, observe whether there are any fault codes on the control panel, check whether the temperature and pressure sensor readings are normal, confirm that they are normal, and then switch to automatic mode to start.

Observe the parameters after startup. After the equipment is running, pay attention to whether key parameters such as inlet and outlet concentration, condensation temperature, and pressure difference on both sides of the membrane component gradually reach the normal range. If any abnormalities are detected, stop the machine in a timely manner for troubleshooting.

For membrane separation units, the main task is to check whether the pressure difference on both sides of the membrane module is normal and whether the intake pretreatment system is working properly. The specific operation shall be subject to the equipment manual.