esquema de conexión de mangueras para cargar por alta presión
REFRIGERANT CHARGEAt the time of loading of gas, we will need several measuring devices and some tools.There are several methods for setting the cooling load and the mechanism at the time of loading a computer.First and worth outlining the main element of a pressure analyzer, the analyzer is commonly used two-valve, but we note that in the market there are also four and five valves.The analyzer comprises two valves one for low pressure (low pressure) and one for high pressure (high pressure). Two pressure gauges a blue color to indicate low pressure, their range is usually from 0 to 10 bar and includes several stops in pressure-temperature relationship of gases most characteristic (R 22, R 134A, R 407C), the Another pressure gauge will be red, this indicates high pressure, its range is usually from 0 to 30 bar, and as in the case of low pressure gauge also incorporates several temperature ranges for the gases mentioned above.The analyzer consists of three sae it links the lightship ¼ to gases such as R22, R134a, R 404, R 407C, R 410C gas fittings we use threads to 5/16 because it works at higher pressures. In these three threads were connected by a hose that will connect the low side pressure gauge refrigeration equipment to low (blue) on the other the high pressure gauge refrigeration equipment to high (red) and a hose connected to the central thread to be used as service hose is yellow in color is yellow hose connecting the refrigerant gas cylinder. It also incorporates a glass where you can visualize the passage of cooling fluid.First, follow a few precautions, be reviewed in all the links has not damaged threads, dirt, dust, oil or grease. Be ensured that the windows of a dust gauges otherwise a clean cloth was used, in no event be held cleaning with harsh detergents or disinfectants.Second will be made to purge hoses. Connect the yellow hose to the coolant bottle which will be closed. Connect the low pressure hose (blue) to the cooling system. The bottle is opened. When the hoses are filled with gas to purge the air from them. Will perform the same operation for high pressure hose (red).The charge may be made by low or high:For low pressure (pure gases or azeotropic)Connect the yellow hose to the coolant gas bottle, purged and saturated gas system, once the pressures are balanced refrigeration equipment is started and opens the valve of low pressure analyzer so that the system itself will introducing the gas into the computer. It can heat the bottle to increase the temperature and in turn, thus putting pressure gas introduced more quickly.This method is the most used because it can be overheating and undercooling measuring which provides the cooling circuit and can be adjusted without having to know the final weight of refrigerant, another indication that would help us know if the load is proper the intensity of consumption of the compressor and the temperature changes that can be measured in the exchangers.Approximate data for refrigeration equipment shall be:Reheat Between 5 º C and 12 ° CBetween 5 ° C subcooling and 12 º CJump air heat exchangers Approximately 10 º CJump water heat exchangers Approximately 5 ° CPower Consumption Under the rated
Wiring diagram for loading hose low pressure
High pressure (gases zeotrópicos)Connect the yellow hose to the coolant gas bottle, if that does not carry liquid acquisition will place the bottle upside down to make sure the coolant come in liquid form, this operation is carried out with the team standing as if it were not the pressure that would prevent opening in the circuit load.This system is used rarely and only if we have a scale and calculate the weight entered cotejándolo with the weight of refrigerant charge shown on the nameplate of the equipment.If we inject liquid refrigerant by making low pressure we take great care to avoid the dreaded related slugging the compressor.We will open the key gently, leaving the system to stabilize.Apply the load necessary to know the criteria listed above.Initially at idle we introduce liquid refrigerant liquid line if we have a decision between the expansion valve or capillary and condenser. It happens that when starting the compressor pressure liquid line increases and hinders the passage of coolant from the bottle to the circuitAttention. The zeotropicos coolant can be introduced into the circuit by making gas only if we will use all coolant from the bottle.