Myth 1: not after routine inspection, only by guessing to repair
Many refrigeration repair masters, see the refrigerator leakage, not after the pressurized directly add condenser net, time is not long to leak again, only to find that it is actually the freezer evaporator leakage.
In fact, the compressor turn does not mean that the compressor is not a problem, in the system leakage, the compressor is the same in the operation, but cut open the pipeline experimental compressor, the compressor is actually out of gas.
Refrigerator system is either leakage or blockage, from the filter and capillary tube cut open a large number of Freon sprayed out, that is, blocked, no gas at all – this is the conventional pressurization experiment.
Myth 2: only 1 compressor, then just welding
Not that the system puts the refrigerant, welding must be safe and sound, some compressors “there” residual freon, sometimes in the welding compressor residual receiver will be expanded when the gas will be sprayed, welding any part of the body shall not be close to the mouth.
Myth 3: compressor for the big, the problem is solved!
Refrigerator freezer repair requirements than the air conditioning to be strict, the compressor and the system to be a reasonable match between the condenser, evaporator, capillary tube, Freon to join a certain amount, the compressor for a large, it will be hot; compressor life will not be long; but to compressor for a small, refrigeration will not be good, and the evaporator frost less than the head.
Myth 4: Where the compressor is sprayed out of the liquid must be water
Compressor oil will run out with the eruption, at this time some people will feel that these are water; this is not necessarily Oh, how do we distinguish between oil or water?
With a torch burn, if there is a snorting sound, it means that the oil contains water, be alert to the occurrence of ice blocking.
Myth 5: aluminum pipe welding can not
Some people will say how the aluminum pipe can not be welded?
Aluminum welding rod is too expensive, people do not want to buy aluminum welding rod. Refrigeration repair is the welding technology, fire in place on no problem. Beginners are due to the fire is not enough, they are always worried that the copper tube will be burned through, the result of the welded weld is like goose bumps, especially in the air conditioning compressor weld can be seen in such a situation. These tubes are thick walled and require a large fire when welding.
Myth six: fluoride not refueling
Many people who have been engaged in refrigeration repair for several years have never added oil to the compressor or changed the oil, resulting in the end can only change the compressor.
Oil is worth more than Freon, but oil is cheaper than the compressor! The freezer follows the compressor oil as it spews out after a system leak; you should have to add some oil or change the oil properly after fixing the system leak.
When you turn on the compressor and have dry air or have dry black dust when you cover your hand at the high pressure hose port, be wary, the compressor may be out of oil. The compressor can turn as long as it has a little oil, until there is not a speck of oil when the stuck cylinder can not be repaired!
Myth #7: Fluoride is often added
Refrigerant is a kind of neither evaporation nor consumption of things, many repairmen found freezers, air conditioners do not cool, to add fluorine, which is not right. Should be sure first problem, and then repair.
Myth 8: freezer coil copper pipe than iron pipe is good!
Copper pipe used in refrigeration equipment, corrosion resistance, the wall is thick enough, after many tests found that the freezer coil iron pipe than copper tube frost obvious; this is because the copper pipe heat dissipation performance is good, used in the evaporator, the insulation effect is not good, so the copper tube frost looks like there is no iron management want!
Post time: Mar-11-2024
