High-temperature Oven Maintenance Guide

1. Daily Maintenance

First, clean the interior of the box to remove any residual contaminants from the test (such as dust and sample debris) to prevent them from corroding the inner liner or contaminating subsequent test samples. After the box has completely cooled down, wipe the inner liner, shelves and inner walls with a dry soft cloth.

Second, clean the exterior of the box to prevent dust from blocking the ventilation openings and affecting heat dissipation. Especially around the ventilation openings, make sure there is no dust accumulation.

Thirdly, check whether the sealing strip of the box door is flat, free of cracks and deformation. Aging or damage to the sealing strip can lead to heat leakage and a decrease in temperature uniformity.

Fourth, empty the chamber: Emptying the chamber after use can prevent irrelevant items from being stored in the box for a long time, which may cause contamination or accidents.

2.Regular Maintenance

Please be sure to cut off the power supply before cleaning the heating element! Wait for the equipment to cool down completely. Open the rear cover plate and gently remove the dust on the surface of the electric heating tube and the air duct with a vacuum cleaner or a soft brush.

Check and clean the fan/impeller. Dust accumulation on the fan can cause dynamic balance imbalance, seriously affecting the uniformity of temperature. Therefore, after the power is cut off, it is necessary to check whether there is any abnormal noise from the fan motor bearings and use a vacuum cleaner to clean the accumulated dust on the fan blades.

 Electrical components shall be inspected by professional equipment administrators for any loose, charred or rusted marks on the power lines, circuit breakers, contactors and other terminal blocks. Tighten the loose terminals and replace the damaged parts to ensure the safety and reliability of the electrical connection.

The accuracy of the temperature sensor can directly determine the success or failure of the test. It is recommended that every six months or once a year, a standard thermometer that has undergone metrological calibration be used to conduct multi-point comparison calibration of the working temperature range of the equipment. If deviations are detected, parameter corrections or sensor replacements should be made in the control system.

Clean the humidity system. If your device has a humidity function, you also need to clean the humidification water pan regularly, replace the wet cloth to prevent the growth of scale and algae, and use deionized water or purified water to reduce scale.

3. Long-term Maintenance after discontinuation

First, thoroughly clean the inside and outside of the box, and then completely cover the equipment with a dust cover.

Secondly, it is recommended to power on and run the equipment for half an hour to one hour without load once a month. This can remove the moisture inside the box, keep the electrical components active, prevent them from being damaged by moisture, and lubricate the mechanical parts.

Finally, during non-power-on periods, it is recommended to completely cut off the main power supply to ensure safety and save standby power consumption.

Please always keep in mind that safety comes first in the above operations. By implementing a systematic maintenance plan, you can extend the service life of the high-temperature oven, ensure the accuracy and repeatability of the test data, and reduce the frequency of equipment failures and maintenance costs.