Blast drying oven is a commonly used equipment in laboratory and industrial production, used for drying, baking, sterilization and other operations. The debugging process is crucial for ensuring the normal operation of the equipment and the accuracy of experimental results. The following are the debugging details of the blast drying oven:
1、 Installation environment confirmation and preliminary preparation
Environmental condition verification: The equipment should be placed on a horizontal table with a reserved heat dissipation space of ≥ 30cm around it, away from flammable and explosive materials, corrosive gases, and strong electromagnetic interference sources. The power supply voltage should be consistent with the equipment nameplate (usually 220V or 380V), and the grounding wire connection should be reliable to avoid static electricity accumulation.
Equipment appearance and component inspection: Before installation, check whether the outer shell of the box is damaged during transportation, confirm that the door seal is intact and not deformed, and that the shelves inside the box are firmly fixed and adjustable in position. At the same time, check the list of accessories to ensure that core components such as fans, heating tubes, and temperature sensors are complete.
2、 Electrical system debugging
Power on test: After connecting the power supply, turn on the power switch of the device, observe whether the control panel indicator light is on normally, and whether the voltmeter display value is stable within the rated range (such as 220V ± 5%). If the indicator light flashes or the voltage is abnormal, immediately cut off the power and check the circuit connection.
3、 Temperature control system debugging
Multi stage temperature rise test: First, perform low-temperature debugging and set it to 30 ℃. After reaching the set temperature, observe whether the temperature can remain stable. Lasting for 1 hour, allowing fluctuations of ± 1 ℃; Perform high-temperature debugging again, set 200 ℃, and observe temperature stability as well. After the device reaches the set temperature, the temperature fluctuation should be controlled within ± 2 ℃ within 1 hour.
Calibration and optimization: Enter temperature calibration mode, compare the displayed value of the temperature control instrument with the measured value of the standard thermometer, and recalibrate if the error exceeds ± 1 ℃.
4、 Debugging of Blowing and Airflow Distribution
Fan performance verification: Turn on the blower switch and check if the blower is running normally and if the airflow inside the box is uniform. Place the paper strips in different positions inside the box and observe their movement to determine if the airflow distribution is reasonable.
Ventilation adjustment: Adjust the fan speed according to the characteristics of the sample. For high humidity samples, increase the air volume to accelerate dehumidification, while for thermal sensitive materials, reduce the air speed to minimize temperature fluctuations. Regularly clean the fan filter to prevent dust from clogging and affecting the air supply efficiency.
5、 Comprehensive trial operation and safety verification
Simulated operating condition test: Running for 2 hours without load, the monitoring equipment runs smoothly without abnormal noise, the temperature control is accurate, and the blowing effect is good.
Security protection verification: Short circuit temperature sensor to simulate overheating, confirm automatic cut-off of heating and trigger alarm; Close the box door and start the equipment, check if the door switch can control the fan to start and stop normally.