How to deal with refrigerant leakage in low temperature test chamber

If the capillary blockage occurs during the use of the low temperature test chamber, the evaporator, the condenser and the connecting pipe may be cracked or burnt at the scene, causing the refrigerant to leak. After replacing the compressor, etc., the system needs to be vacuumed.

In the process of vacuum pumping in the system, the “self-vacuum method” is a very practical method (especially when the door is repaired). In fact, the operation skill is relatively strong, and there are certain difficulties in operation. The following is a description of some of the operating methods:

1. Preparation tools and materials: 1 multimeter, 1 test pencil, 1 set of combination screwdriver, 1 set of needle-nosed pliers, 1 vacuum pressure gauge, 1 B-12 cylinder, refrigerant about 500g, 3 liquid filler tubes , 1 set of welding tools, a number of copper tubes for welding;

2. Process tube;

3. In-situ welding according to the system structure;

4. Power on the compressor and observe it;

5. System exhaust.

The above content is about the introduction of the maintenance operation method after the leakage of the refrigerant in the low temperature test chamber, and the maintenance personnel can learn from it in the actual operation process.