Maintenance of thermal shock test chambers

Thread Content

A thermal shock test chamber is not inexpensive, so maintenance is quite important for customers. After more than a decade of exploration and experience, the technical staff at Kunshan Huakai Testing Instruments in our company have compiled some guidelines for the maintenance of thermal shock test chambers. The details are as follows:

I. Requirements and principles for the daily maintenance of thermal shock test chambers
1. Maintenance must adhere to the principle of “equal emphasis on prevention and repair,” with regular and mandatory maintenance being carried out. It is important to properly balance usage, maintenance, and repair – it is not acceptable to use the equipment without maintaining it, or to repair it without maintaining it first.
2. To ensure that mechanical equipment remains in good working condition at all times, ready for use, to reduce downtime due to failures, improve the equipment’s reliability and utilization rate, minimize wear and tear, extend its service life, and lower operational and maintenance costs, while also ensuring safe operation, it is essential to strengthen the maintenance of thermal shock test chamber equipment.
3. All teams must carry out maintenance on various types of machinery in accordance with the established maintenance procedures and categories. Delays should not occur without reason; in special cases, any extension to the maintenance schedule must be approved by the responsible supervisor, but it generally should not exceed half of the specified maintenance interval.
4. When maintaining thermal shock test chamber equipment, quality must be ensured, and all required tasks must be carried out as specified, without any omissions. Maintenance tasks, the quality of maintenance, and any issues identified during maintenance should be properly recorded and reported to the specialist in this department; 5. Maintenance personnel and the maintenance department should implement the \"three inspections and one handover\" approach (self-inspection, mutual inspection, professional inspection, and a successful handover), continuously summarizing maintenance experience to improve the quality of maintenance. II. Maintenance and care methods for cold and heat shock test chambers 1. The refrigeration system of a cold and heat shock test chamber is its core component; it is necessary to check annually whether there are any leaks in the copper pipes containing refrigerant, as well as at all connector and welding points. If oil seeps out, please address it immediately. 2. When opening or closing the door or removing test items from the furnace, avoid letting the items come into contact with the adhesive edge on the door, to prevent damage to that edge and reduce its lifespan. 3. The ground around and beneath the machine body must be kept clean at all times, to prevent large amounts of dust from entering the unit and causing accidents or reducing its performance. 4. The radiator (condenser) of the refrigeration unit should be maintained regularly to keep it clean; dust accumulating on the condenser can cause the compressor’s high-pressure switch to trip, resulting in false alarms. The condenser of a thermal shock test chamber should be serviced monthly – use a vacuum cleaner to remove dust from the radiator’s fins, or brush it with a hard-bristled brush after turning the device on, or blow away the dust using a high-pressure air nozzle. 5. The high-current contacts in the distribution panel should be cleaned and inspected at least once a year inside the distribution room. Loose contacts can put the entire equipment in a dangerous operating condition; in mild cases this may lead to damaged components, while in severe cases it can cause fires, alarms, and injuries – all of which are very dangerous. To clean them, a vacuum cleaner can be used to remove the dust from the interior. 6. Do not adjust the set values of the two over-temperature protectors inside the distribution box arbitrarily; they have been set at the factory. These protective switches are used to prevent the heating elements and humidifying elements from operating without water, as well as to provide alerts in case of water shortage. The set point for the cold and heat shock test chamber is equal to the temperature set point plus 20°C to 30°C. 7. Inspection and maintenance of water systems: The pipes in water systems are prone to clogging and leakage. It is essential to regularly check for any signs of leakage or blockages; if such issues are found, they should be resolved promptly or the company should be informed. 8. When retrieving the product after its designated time has arrived, it must be done with the device turned off, and the staff must wear dry, electric-proof, heat-resistant gloves when handling the product. 9. Before operating this device, internal impurities must be removed first. 10. The electrical room should be cleaned at least once a year; when cleaning, use a vacuum cleaner to remove the dust from inside the room. The exterior of the cold and heat shock test chamber should be cleaned at least once a year, using soapy water for cleaning. 　Cold and heat shock test chambers belong to the category of large-scale environmental test chambers, and they require strict standards both in terms of operation and maintenance. Our company, Kunshan Huakai Testing Instruments Co., Ltd., is a manufacturer of testing instruments for environmental test chambers such as cold and heat shock test chambers, high and low temperature test chambers, and constant temperature and humidity test chambers. Thanks to our expertise, we are a trustworthy choice.