"The hot summer, the uncooled air conditioning is a headache. Then how should we deal with this problem? Today, Master Li of the Reiter repair factory to answer for you."
First check: what is the high and low pressure of the refrigeration system? Is the refrigerant sufficient? Is the condenser working normally? Is the compressor working normally? Is the compressor running normally? Is the condenser and evaporator surface clean? Is the button of the air conditioner control panel in the refrigeration position (preferably in the cab)? Is the warm air valve closed? In engine 1200 In the case of revolutions / minutes, the system low pressure should be around 2kgf, and the high voltage should be normal at 10-15kgf.
If there is no refrigeration reaction and refrigerant is not lacking, please follow these steps:
1, first remove the air conditioning dry bottle, if found inside the pipe black dirt, sludge, please use the engineering machinery air conditioning pipe cleaning agent, pour into the air conditioning pipe, soak for a few minutes.
2, with high pressure air (in principle, high pressure nitrogen should be used) to blow out water, impurities, dirt and frozen oil in the air conditioning system so that the system is very clean after treatment, and the cooling medium can flow smoothly, the circulation is large and the refrigeration is obvious.
3, replace the drying bottle, assemble the air conditioning system, and add high pressure nitrogen leak detection (condition is not allowed, you can add refrigerant leak detection, do not recommend high-pressure air leak detection).
4, to thoroughly vacuum, time not less than 30 minutes, and then add the matching refrigerating oil (to ensure compressor life), compressor refrigerant oil filling amount is about 100 grams.
5, select the refrigerant (please select the IHI air-conditioner special refrigerant).
6, how many refrigerants to join properly, you should watch the cold medium cycle peep hole when adding the cold medium, when the engine speed is 1200 turns, a small amount of bubbles can be seen in the peep hole. If there is no peep hole, what do you want to do? At this time, you need to make a quantitative injection, that is to say, you must know the refrigerant. The standard filling amount, when you do not have the maintenance instructions, you can get the refrigerant intake from the after sales service department, and fill it according to the standard quantity.
7, the next step, you need to clean the condenser, evaporator dust, dirt, this is very important, not cleaning will make your air conditioning cooling capacity, engine fuel consumption, need to be carefully cleaned.
8, the maintenance is completed, you can rest assured of the use of air conditioning.
