High and low temperature low pressure test chamber to pay attention to the problem?

High and low temperature low air pressure test chamber to pay attention to the problem

A, high and low temperature test chamber does not start after the start

1, whether the power supply voltage is within the specification, the general requirement is 380V, if not, should be equipped with a regulator or find a professional electrician to solve.

2, low temperature compensation switch is not turned on, low temperature compensation switch failure, low temperature compensation heating line can not be connected.

Second, the high and low temperature low pressure test chamber to open the laborious

The trouble of opening the door usually occurs in the summer or rainy season, because there are irregular small holes in the contact surface of the door and door cover. Moisture enters the small hole to form condensation. When the door is closed, the condensate expels air from the holes and creates a negative pressure. In addition, the magnetic and contamination relays of the door seal cause mixing. Attract, so when you open the door, the feeling will be difficult, the method is to clean the door cover regularly with soapy water, keep good elasticity and smoothness, do not condensation, coated with a small amount of powder,.

Third, the noise made

1. When the freezing oil enters the evaporator, it will make a "gurgling" sound.

2. Compressor condenser fixing screws or nuts loose, loose water plate, etc.

3. Pipeline suspended for a long time, easy to occur with the phenomenon of vibration, noise significantly increased, and is cyclical fluctuations. By pressurizing and pressurizing the parts prone to vibration, the noise can be significantly reduced, and for different situations, vibration-damping mortar, rubber sleeves and other reinforcement, buffering and isolation measures can be taken.

4. Due to the cylinder off, compressor spring loose, internal parts wear serious, poor lubrication, causing scraping cylinder noise, capillary export is not smooth, no capillary chuck, the export temperature can not be about 45 ℃.

5. Poor vacuum pumping, producing "grunt" sound, manifested as uneven condensing temperature.