Basic operation and description of maintenance of constant temperature and humidity test chamber
Only correct maintenance can make the constant temperature and humidity test chamber play its best performance and function. How is the constant temperature and humidity test chamber maintained and cleaned in daily work?
1. Cleaning and maintenance of the inside and outside of the constant temperature and humidity test chamber
(1) The internal impurities should be removed before operation.
(2) Clean the power distribution room at least once a year, and use a vacuum cleaner to remove the dust in the room.
(3) The outside of the cabinet must also be cleaned more than once a year. Wipe with soapy water first.
2. Inspection and maintenance of the humidifier in the constant temperature and humidity test chamber: The water stored in the humidifier should be replaced once a month to ensure clean water quality, and the humidified water tray should be cleaned once a month to ensure smooth water flow.
3. Check the over-temperature protector in the constant temperature and humidity test box: When the test box is in operation, the maximum value of the over-temperature protection is increased by 20 ℃ ~ 30 ℃. When the temperature in the test chamber rises to the set point of over-temperature protection, the power supply of the heater stops, the over-temperature warning light is on but the fan is still running, if it runs for a long time and is unattended, please be sure to check the over-temperature protection before operation Whether the device is properly set (the setting of the wet bulb over-temperature protector is 120 ° C).
4. Inspection and adjustment of the water level of the wet bulb in the constant temperature and humidity test chamber: The water level of the accumulator should not be too high, so that the water overflows the accumulator or is too low to make the wet bulb test cloth absorb water abnormally, affecting the accuracy of the wet bulb Six points is enough. The water level of the water tube can be adjusted to adjust the height of the water box.
Fifth, the replacement of the wet bulb test cloth in the constant temperature and humidity test box: when the surface of the test cloth is not clean or hard, or after the temperature control is completed, the test cloth must be replaced before continuing the temperature and humidity sphericity control. The test cloth should be replaced every three months. The temperature measurement body should be wiped with a cleaning cloth when replacing. The new test cloth should be cleaned first.
Sixth, the dust removal of the condenser of the constant temperature and humidity test chamber: the condenser should be maintained regularly on a monthly basis. Use a vacuum cleaner to remove the dust attached to the condenser heat sink or use high-pressure air to remove the dust.
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