Because the constant temperature and humidity test chamber is relatively large in size, inconvenient to move and complicated in circuit, we have summarized six common faults and solutions that are easy to occur in the constant temperature and humidity test chamber for your reference: 1. When the temperature and humidity controller shows the abnormal temperature condition; Wuxi Handi Environmental Technology Co., Ltd. is a comprehensive enterprise integrating scientific research, design and manufacture of various types of simulated environmental testing equipment. Handy has always maintained efficient operation in product R&D, design, manufacturing, quality control and service coordination. The company has accumulated rich experience in non-standard design and automation control to meet and adapt to the needs of users. Customers all over the country, involving a variety of industries: military, aerospace, instrumentation, household appliances, automobiles, motorcycles, industrial materials, universities, research institutes, quality inspection and measurement, national quality inspection centers and other departments. The company sincerely provides you with first-class equipment and first-class service; free one-year equipment maintenance and lifetime maintenance; free technical guidance and personnel operation training; free report on customer issues service.
Checking steps:
1. Check whether the over-temperature protector of the control panel is set at 150 °C.
2. Check if the circulation motor of the equipment room is damaged or not.
3. Check if the temperature of the solid state relay burns out the short circuit:
If the heater is not burned, use the three-meter electric AC voltage file, the voltage gear is opened to 600 volts, and the red and black rods are placed on the AC side of the solid state relay marked with T, the temperature part. The temperature setting value is set to 0 °C. At this time, the indicator of the solid state relay of the temperature part will not light up. If the measured voltage value does not change, maintaining the voltage below 10V means that the solid state relay is burned and short-circuited.
Solution:
1. Turn the panel over-temperature protector to a position of 150 ° C, or use the temperature plus 30 ° C position;
2. Notify the manufacturer's customer service maintenance department to replace the circulation motor;
3. Replace the solid state relay of the temperature part (the solid state relay marked with T as the line number), or notify the after-sales door for maintenance.
Second, when the temperature and humidity controller shows abnormal humidity conditions;
Checking steps:
1. Check whether the under-water over-temperature protector in the control room is set at 150 °C.
2. Check whether the pipeline is too dirty in the equipment room, causing the water flow to be unsatisfactory;
3. Check if there is water in the water tank. If there is no water, check whether the water tank has water.
4. Check if the solid state relay in the humidity part is burnt out. If the heater is not burned, use the three-meter electric meter AC voltage file, the voltage gear position is opened to 600 volts, and the red and black rods are respectively marked with the line number labeled H. The solid state relay is connected to both sides of the AC, and the humidity setting value of the humidity part is set to 0%. At this time, the indicator of the solid state relay of the humidity part does not light up. If the measured voltage value does not change, it is maintained at 10V. The following represents a short circuit in the state of solid state relay burnout. Or first set the humidity part setting to 0%, and then see if the water in the humidification tank in the machine room is boiling.
Solution:
1. Transfer the under-water over-temperature protector to a position of 150 °C;
2. First, turn off the main power supply at the rear of the machine, then open the drain valve under the humidifying bucket to the position parallel to the pipeline. When the water in the water tank is drained, use the wrench to open the humidifying bucket and open the inside. Remove the scale from the humidity for a long time, then remove the silicone tube and wash it in the water. After the maintenance is completed, follow the removal method and put it back in the opposite direction. After the device is finished, the drain valve below the humidification tank should be closed to the pipeline. Vertical position, then turn on the main power supply behind the machine;
3. The water tank is free of water, and the water tank can be filled with water to solve it. If there is no water in the water tank, there is water in the water tank, then the water pump in the water tank is broken, and the ring machine company is notified to repair the customer service department for maintenance;
4. Replace the solid state relay of the humidity part (the solid state relay marked with H as the line number), or notify the after-sales door for maintenance.
Common faults and solutions for constant temperature and humidity test chamber