In the above, the above explains why the constant temperature and humidity test chamber cannot be tilted during transportation because the tilting of the test chamber compressor is likely to cause "oil blockage" in the test chamber compressor. Then the problem comes. If we confirm the "oil blockage" situation in the constant temperature and humidity test chamber, what should we solve?
First, the process tube should be cut, the refrigerant should be drained, the watch valve should be repaired, and the filter should be removed. Then, after the valve is filled with nitrogen, and the nitrogen is filled, the dry filter is blocked with a thumb. When the condenser nozzle is filled with nitrogen gas of about 0.6 MPa, the end of the capillary connected to the drying filter has an air flow out, and the air flow is maintained for about 1 minute, so that the frozen oil flowing into the capillary tube is withdrawn; and then the condensed nozzle is blocked. The thumb is released intermittently 3 to 5 times, each time for about 10 seconds, allowing the airflow to flush the frozen oil in the condenser tube, and then, release the thumb and close the repair valve. After the above treatment, the oil plugging pipe has been basically eliminated, and in order to ensure complete removal of the blockage, the above aeration process can be repeated. Then replace it with a new dry filter, after pumping it, pour in the refrigerant, and the constant temperature thermostatic test chamber can resume normal cooling.
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