Why Does the Compressor of High and Low Temperature Test Chamber Frosting

In the laboratory environment, it is necessary to choose a good installation site, which is the prerequisite for the correct use of air system by compressor of high and low temperature series test equipment. If the test environment of the test equipment is not planned in advance, it is easy to cause the failure maintenance difficulties of the compressor and bad compressed air quality in the future.
A series of high and low temperature test, here we talk about equipment include: high and low temperature test chamber, high and low temperature alternating test chamber, constant temperature and humidity test chamber, high low temperature test chamber, temperature impact test chamber, etc., the devices of the same core - compressor refrigeration. The quality of equipment test system is directly related to the control performance of compressor. Refrigeration compressor as the core component of temperature testing machine, the maintenance of compressor appears particularly important. Below, OTS summarizes the following experiences on compressor maintenance of high and low temperature series test equipment.
1. The test box shall be built on a hard floor, and the foundation plane shall be leveled before installation, so as to avoid the noise caused by compressor vibration.
2. The working site voltage of the test box should be kept stable, which will lead to excessive or too small current. Working under such conditions will lead to compressor damage.
3, the equipment should be placed in a spacious place, space is not conducive to the repair and maintenance of late, especially freezing compressor machine of radiator (condenser) on a regular basis for maintenance, keep clean.
4, due to the compressor air circulation system, if the ambient air dust equipment, add filters, at the same time, the air is not allowed to contain flammable gas and corrosive gas, so as to avoid or internal corrosion may cause explosion.
On the whole, the relative humidity of the air needs to be kept low and well ventilated.
5, compression performance should not be affected by high temperature, ambient temperature below 30 ℃ advisable. If the temperature is too high, the air output from the compressor will decrease.

The correct operation and reasonable handling of failure of high and low temperature test equipment during the test are conducive to the maintenance and service life extension of the compressor.
1, equipment during commissioning, strictly check the running direction of the compressor, should immediately stop when found reversals, cut off power supply, the three-phase line any two switch on again, otherwise it will damage the compressor.
2. During the work of the test equipment, check the compressor safety valve and other protection systems regularly to ensure its sensitivity and reliability.
3. It is not appropriate to start the compressor frequently during the test, and the interval time between starting the compressor is 15 minutes.