1. Programmable constant temperature and humidity test machine wet ball water level inspection and adjustment The water level of the water tube should not be too high, so that the water overflows the water tube or is too low to make the wet ball test cloth absorb water abnormally, affecting the accuracy of the wet ball Just keep six points full. The water level of the water tube can be adjusted to adjust the height of the water box.
2. Replacement of the wet-ball test cloth of the programmable constant temperature and humidity test machine. 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 to control the temperature and humidity. The test cloth should be replaced every three months, and the temperature measurement body [Sen-sor] should be wiped with a cleaning cloth during replacement. The new test cloth should be cleaned first. 
3. Programmable constant temperature and humidity tester Condenser dust removal 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.
4. Programmable constant temperature and humidity testing machine to check the over temperature protector when the constant temperature and humidity test box is running, the maximum value of the over temperature protection setting plus 20 ℃ ~ 30 ℃. When the temperature in the test chamber rises to the set point of over-temperature protection, the power supply to the heater will stop, and the "OVERHEAT" over-temperature warning light will be on but the fan is still running. Whether the over-temperature protector is set properly [The setting of the wet bulb over-temperature protector is 120 ℃].
5. Programmable constant temperature and humidity test case cleaning and maintenance
1) Before the operation of the constant temperature and humidity test chamber, the internal impurities should be removed.
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.
6. Inspection and maintenance of the humidifier of the programmable constant temperature and humidity testing machine 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.
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