Refrigerant is refrigerant and automotive air conditioning refrigerant should be ready before the main tool is the vacuum pump and refrigerant tables. These two tools available in different forms, but the features are the same. If you just add refrigerant or refrigerant to the automotive air conditioning booster, you need snow table. Refrigerant oil is generally in the vacuum after the air conditioning system refrigerant before the flop. Or vacuum leak need to vacuum pump.
First, add refrigerant or refrigerant Synergist
Refrigerant gauge high and low pressure valves closed, unscrew the car air conditioning systems on the high and low pressure pipe plus the filler cap. The refrigerant gauge high and low pressure tube headers with high and low pressure port butt caps and tighten the table respectively, then unscrew valve refrigerant gauge high and low pressure hand observe the pressure gauge, if it is below the specified value you need to add refrigerant or refrigerant Synergist. General car air conditioning system high pressure value in 180psi~200psi. low voltage value in 15psi~20psi. added snow species Shi most is from low voltage added liquid mouth added, will snow species bottle and snow species table Middle tube connection, then clockwise rotating Middle tube Butterfly spin needle, let its thorn broken bottle on counterclockwise rotating to original location, makes snow species flows Middle tube, release Middle tube another a joint, snow species will will rushed off pipeline in of air, again twist tight. Then open the low voltage hand valve refrigerant tables (high pressure side valve is turned off), from the low pressure refrigerant filling into, refrigerant tanks need upside down. Then start the engine and turn on the air conditioner to its maximum, open loop and observe the refrigerant gauge pressure in the specified scope and sight on the receiver drier window bubbles out while testing the car interior minimum temperature of about 9º. Finally remove the snow table end. Add refrigerant air conditioning General notation system leaks only a small amount of 1~2 more bottles of customer vehicles. Bonty refrigerant Synergist is for this type of customer vehicles.
Second, pressure, leak, vacuumed, and freezing oil and refrigerant
General overhaul or leak causing the air conditioning system air conditioning not sufficient understanding or the system not cooling needs to be suppressed, leak detection, and process of freezing oil and refrigerant. If the system have refrigerant out of the original refrigerant. Old snow is best to use a dedicated container recycling. Pressure and leak testing.
1, pushing the leak detection process: car is in a stalled state. Snow table connected vacuum pump and air conditioning pipelines of high and low pressure fluid inlet, the system pressure, snow table intermediate tube and the vacuum pump suction connections. Turn on the vacuum pump switch, up to high and low pressure to the system 180psi~200psi and 15psi~20psi, respectively. ten minutes and observe the pressure gauge value changes, such as reduced need to leak, leak detection method are many, but most just, the most common, is the most effective method: SOAP and water leak detection method. Wipe when leak leak parts where the brush in the soapy water may leak, leak occurs if the air bubbles. If no change then can proceed to the next step of vacuum.
2, vacuum process: step on, vacuum pump switch off, remove the tube from the suction connector received the exhaust connector, then turn the pump switch. To open the high and low pressure valves, vacuum pump for more than 15 minutes in a row, low pressure gauge should be able to reach negative 80-100kpa. should be just below the pressure gauge indicates zero. Close the high and low pressure valves closed vacuum pump, stopped for 15-30 minutes, should be checked if the gauge slowly up the leak site, gauge-invariant, continue vacuuming for 30 minutes, close the low pressure valve, turn off the vacuum pump. To the next step.
3 raise frozen process: the Middle tube with pump off, and placed in frozen oil bottle, open the low pressure valve, refrigeration oil from low pressure plus liquid is inhaled, is inhalation of about 30-40ml, not too much nor too little. Then quickly close the low pressure valve.
4, add refrigerant process: the next step is to add refrigerant, refrigerant bottle and tube connections. Turning clockwise the butterfly valve needle to pierce the bottle anti-clockwise cycles in place. Not start releasing the refrigerant in the air conditioning table low pressure valve, add as much refrigerant (usually about 2 bottles), and then start the engine and turn on the air conditioning to maximum, turn cycle. Increase speed slowly to around 2000rpm, to observe window glass reservoir dryer, started bubbling and bubbles will diminish. To the bubble disappears with liquid through the window and observe the temperature gauge and testing vehicle provided they should be. Close refrigerant table low pressure valve.
5, off the refrigerant bottle, remove refrigerant tables, covering high and low pressure liquid filler cap. End of the operation.
General injection 3~4 bottles is enough, which is subject to engine positions posted signs weight.
Snow table use:
Three pipes, two pressure gauges. Seen from the front, it tube is blue on the left, yellow in the Middle, the far right is red. Left and right have a turn at each end of the valve. General table is blue on the left, the table on the right is red and yellow tubes is by refrigerant tank or vacuum pumps. Sometimes nothing to vent, pressurized nitrogen gas pressure reducing valve is used to leak at times. Blue pipes low pressure, that is, the compressor suction side. Covered with thermal insulation in General. Red pipes and high pressure, or discharge side of the compressor. Typically bare brass, high temperatures will be hot. When closing the valve on the left of blue pipes and pressure gauge is the same, and yellow tube blue tube couldn't get through, is to measure the low pressure of the compressor. The left valve opens, blue pipes with pressure gauge and yellow tubes are open, is generally in the low voltage end discharge (no refrigerant tank), yellow Guan Ruo refrigerant tanks, on the low pressure side charging refrigerant. Note on the low pressure side charging refrigerant not too fast, not to join pure liquid refrigerant, compressor liquid strike are easily damaged. When closing the valve on the right side, red corresponds to the tube and the pressure gauge is the same, yellow and Red tube tubes impassability, can measure the pressure of the compressor. When the valve is open on the right, red tube and the pressure gauge and the yellow tube is open, use the same. Left the valve open on the right, the middle yellow tube to vacuum pump, vacuum, since many of the expansion valve is normally closed, so are both vacuum.