1, the power supply (1) The high and low temperature test chamber power supply uses a three-phase five-wire system, and the equipment cable is a four-core cable, three phase wires , and one neutral wire. Please pay attention to the zero line distinction. Due to the partial load of the equipment and the control system being single-phase, connecting the wrong neutral line will result in the equipment not working and being damaged. (2) The grounding wire of this equipment has a grounding wire column to ensure that the equipment is well grounded to make the equipment safe and reliable. A wrong connection between the neutral and ground wires will cause the device to work abnormally. (3) If the cable needs to be extended due to factors such as the user's site, please ensure that the rated parameters of the extension cord and power supply used can meet the power requirements of the product. 2. Venue (1) A large amount of heat is generated during the use of this equipment. Keep the device in a well ventilated area. (2) Do not use the device near flammable materials or in an explosive atmosphere. (3) Do not use in strong magnetic fields and strong vibration environments. Use security information: 1. Do not connect the test power supply to the power supply of the device, otherwise it will increase the power load of the device. Unless the device has a test power connector. 2. It is strictly forbidden to test flammable, explosive, highly corrosive and strong radiation items. 3. Do not carry or overhaul the equipment while it is powered on or during operation. 1. High temperature burns, hot and cold impact test chambers have high temperature inside the box during high temperature test. During the test or just after the test, if you need to open the box, you should take special care when opening the door. Remember to walk along the direction in which they are opened to avoid burns. 2, low temperature frostbite, hot and cold impact test chamber during the low temperature test, the temperature inside the box is very low. During the test or just after the test, special care should be taken to open the door to avoid frostbite. 3, high temperature burns, hot and cold shock test chamber during the high temperature test, the temperature inside the box is very high. During the test or just after the test, special care should be taken to open the door to avoid burns. 4, electric shock, although the equipment has a sound anti-shock measures, but still need to pay attention, especially the electrical control system, under working conditions, do not touch the electrical parts. a. Thermal shock tester The radiator ( condenser ) of the refrigeration unit should be regularly maintained and kept clean. Dust-adhesive condenser will cause the compressor high-voltage switch to trip and cause false alarm. The condenser should be regularly maintained monthly. Use the vacuum cleaner to remove the dust attached to the condenser heat-dissipating mesh or use a hard brush after booting. Brush or use a high pressure nozzle to blow off the dust. b. When opening or closing the test object from the furnace, do not allow the article to contact the rubber edge of the door to prevent the rubber edge from being damaged and shortening the life.
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c. The ground around the fuselage and the bottom should be kept clean at all times to avoid accidental accidents and reduced performance caused by a large amount of dust inhaling into the unit.
d. The thermal shock test machine is the core of the machine. Please check all the copper pipes for leaks in half a year. The joints and solder joints of the bumps are leaked. Please inform the company or directly Handling it.
e. The large current contact of the switchboard, the power distribution room should be cleaned at least once a year, and the looseness of the contact will make the whole equipment in dangerous working condition. If the component is burned out, the fire, alarm and personal injury are very dangerous. Use a vacuum cleaner to remove indoor dust.
F. Thermal shock two overtemperature protection setpoint distribution box in the test machine, do not easily debug, adjusted at the factory, this protection switch is to protect the heating tubes and air burning alarm purposes. setpoint = The temperature set point is 20 ° C ~ 30 ° C.
h. Thermal shock test machine When the product is taken after the test product arrives, it must be in the off state and the staff must wear dry, anti-electric and temperature-resistant gloves to pick and place the product.
i. Thermal and thermal shock test The cleaning and maintenance of the inside and outside of the chassis.
j. The thermal shock tester should remove internal impurities (objects) before operation.
k. The power distribution room should be cleaned at least once a year. When cleaning, please use a vacuum cleaner to remove indoor dust. The outside of the cabinet must be cleaned more than once a year, and it can be wiped with soapy water during cleaning.
Thermal shock test box maintenance method and precautions
Precautions