Auto Maintenance Equipment Division LAUNCH

CNC Series- Injector Cleaner& Tester 1.Affect of engine fuel system 2.Introduction of CNC series 3.Maintenance4.Precautions5.Troubleshooting Auto Maintenance Equipment Division LAUNCH

1.Affect of Engine Fuel System During a long time work, the fuel supply system of the engine may become unsmooth, and cause the engine power decreased, the acceleration lagging, shaking, fuel wasting, difficult starting, intermittent flameout, emission of exhaust gases, and high temperature, etc., which may at last reduce the vehicle drivability. So, it is very necessary to clean and maintain the fuel system of the engine periodically. During a long time work, the fuel supply system of the engine may become unsmooth, and cause the engine power decreased, the acceleration lagging, shaking, fuel wasting, difficult starting, intermittent flameout, emission of exhaust gases, and high temperature, etc., which may at last reduce the vehicle drivability. So, it is very necessary to clean and maintain the fuel system of the engine periodically. Auto Maintenance Equipment Division LAUNCH

2.Introduction of CNC Series CNC (Injector Cleaner & Tester) With the technology of ultrasonic cleaning and fuel pressure controlled by microcomputer, Launch injector cleaner & tester is an advanced electromechanical product, which can clean and test various injectors by simulating engine working conditions. It can also clean the injectors and fuel supply system on vehicle. With the technology of ultrasonic cleaning and fuel pressure controlled by microcomputer, Launch injector cleaner & tester is an advanced electromechanical product, which can clean and test various injectors by simulating engine working conditions. It can also clean the injectors and fuel supply system on vehicle. Auto Maintenance Equipment Division LAUNCH

2.1 CNC series Auto Maintenance Equipment Division LAUNCH CNC-601ACNC-801A CNC-602A

2.2 Functions: Ultrasonic cleaning: To clean several injectors at the same time by an ultrasonic cleaner, and remove the carbon deposits on the injector completely. Reverse flush: To remove the impurities adhered to the injector or screen thoroughly. On-vehicle cleaning : The unit is equipped with various adaptors and couplers that may help clean the injectors on vehicle. Equalizing test: To test the balancing of injecting amount of each injector. Spray test : To observe the spraying status of each injector with the help of backlight. Leakage test: To test the sealing and dribbling conditions of injectors under high pressure. Injecting flow test: To check the injecting amount of the injector in 15 seconds of constant injection. Auto. test: To clean injectors by simulating different working conditions. Auto Maintenance Equipment Division LAUNCH

2.3 Features Adopting the powerful ultrasonic cleaning technology, CNC can clean injectors entirely. Adopting the powerful ultrasonic cleaning technology, CNC can clean injectors entirely. Microcomputer controlled fuel pressure is adjustable. Microcomputer controlled fuel pressure is adjustable. With the technology of microcomputer control and digital display, CNC makes real the automatization in cleaning and testing injectors, and conducts the live monitoring of dynamic values. With the technology of microcomputer control and digital display, CNC makes real the automatization in cleaning and testing injectors, and conducts the live monitoring of dynamic values. Automatic fuel draining can be realized by program preset for some test items. Fuel can also be drained by pressing a button on the control panel after the test. Automatic fuel draining can be realized by program preset for some test items. Fuel can also be drained by pressing a button on the control panel after the test. Auto Maintenance Equipment Division LAUNCH

Operating condition 2.4 Operating condition Temperature: -10~+40 ℃ ; Temperature: -10~+40 ℃ ; Relative humidity: ＜ 85%; Relative humidity: ＜ 85%; Intensity of outer magnetic field: Intensity of outer magnetic field: ＜ 400A/m; ＜ 400A/m; No naked flame within 2m. No naked flame within 2m. Auto Maintenance Equipment Division LAUNCH

2.5 Specifications Power supply: AC220V±10%, 50/60Hz; Input power: 350W; Ultrasonic cleaner power: 100W; Pressure range: 0~0.65Mpa; Pressure step: 0.004Mpa; Simulated RPM range: 10 ～ 9990rpm; RPM step: 10rpm; Count range: 1 ～ 9999 times; Time range: 1 ～ 9999s; Pulse width: 0.5 ～ 25ms; step 0.1 ms; Auto Maintenance Equipment Division LAUNCH

2.6 Working Principle Supplying fuel for the whole system through fuel pump working, it is similar to the working condition of auto fuel pump. Fuel flows into the T-type block through the fuel filter, one into the overflow valve, the overflow valve is to release the pressure that higher than the safety degree. In order to ensure smooth operation of the system, the other into the fuel distributor of injector for supplying fuel for each injector. Supplying fuel for the whole system through fuel pump working, it is similar to the working condition of auto fuel pump. Fuel flows into the T-type block through the fuel filter, one into the overflow valve, the overflow valve is to release the pressure that higher than the safety degree. In order to ensure smooth operation of the system, the other into the fuel distributor of injector for supplying fuel for each injector. The solenoid valve is to control whether the injector cleanser is drained out from the measuring tube;. The solenoid valve is to control whether the injector cleanser is drained out from the measuring tube;. Auto Maintenance Equipment Division LAUNCH

2.7 Pipe diagram Auto Maintenance Equipment Division LAUNCH 1-Fuel distributor ； 2- Injector ； 3-Mesuring tube ； 4-Solenoid valve ； 5-Fuel tank ； 6-Level switch; 7-Fuel pump; 8-Filter ； 9-Overflow valve ； 10-T-block ； 11- Connector ； 12-Pressure gauge ； A-Injector pulse signal cables ； B-Control cables for solenoid valve ； C-Control cables for level switch; D-Power control cables for fuel pump.

2.8 Circuit diagram Auto Maintenance Equipment Division LAUNCH 1-Fuel pump; 2-Drive board; 3-Control panel; 4-Level switch; 5-Solenoid valve; 6-Injector; 7-Switching type power supply ； 8-Backlight; 9-Switch for backlight ； 10- Power switch; 11-Fuse; 12-Socket for power supply. 1-Fuel pump; 2-Drive board; 3-Control panel; 4-Level switch; 5-Solenoid valve; 6-Injector; 7-Switching type power supply ； 8-Backlight; 9-Switch for backlight ； 10- Power switch; 11-Fuse; 12-Socket for power supply.

2.9 Control panel (CNC-602) Auto Maintenance Equipment Division LAUNCH

2.10 Pipeline connection of on-vehicle cleaning 1-CNC-602A main unit 2-Fuel return hose 3-Engine 4-Fuel outlet hose on CNC-602A 5-Fuel tank 6-Fuel pump 7-Fuel outlet hose of the engine 8-Filter 9-Fuel return hose on the engine 1-CNC-602A main unit 2-Fuel return hose 3-Engine 4-Fuel outlet hose on CNC-602A 5-Fuel tank 6-Fuel pump 7-Fuel outlet hose of the engine 8-Filter 9-Fuel return hose on the engine Auto Maintenance Equipment Division LAUNCH

Test liquid and Cleanser Selecting & Replacing Test liquid is only used by the main unit. The on-vehicle cleaning uses cleanser. The ultrasonic cleaning uses specified ultrasonic cleanser (It can be replaced by cleanser if there is no ultrasonic cleanser). The test liquid and cleanser are attached with the delivery of the unit. The blending ratio of cleanser (test liquid) vs fuel is 1:4. Test liquid is only used by the main unit. The on-vehicle cleaning uses cleanser. The ultrasonic cleaning uses specified ultrasonic cleanser (It can be replaced by cleanser if there is no ultrasonic cleanser). The test liquid and cleanser are attached with the delivery of the unit. The blending ratio of cleanser (test liquid) vs fuel is 1:4. Note: Note: The test liquid is easily to accumulate many impurities after a period using, which tends to block the injector, so change it regularly. Drain the cleanser from the fuel tank by pressing [drain] button. It is better to clean the fuel tank with a little cleanser before filling new. The test liquid is easily to accumulate many impurities after a period using, which tends to block the injector, so change it regularly. Drain the cleanser from the fuel tank by pressing [drain] button. It is better to clean the fuel tank with a little cleanser before filling new. Warning! Warning! Only use test liquid by the main unit. Do not use cleanser, otherwise it will damage the rubber sealing parts. After the on-vehicle cleaning finishes or the cleanser is misused by the main unit, should immediately & thoroughly clean the fuel tank and fuel path with test liquid. Only use test liquid by the main unit. Do not use cleanser, otherwise it will damage the rubber sealing parts. After the on-vehicle cleaning finishes or the cleanser is misused by the main unit, should immediately & thoroughly clean the fuel tank and fuel path with test liquid. Auto Maintenance Equipment Division LAUNCH 3. Maintenance

O-ring Replacing O-ring Replacing Replace the O-ring when it is deformed in order to avoid leaks during cleaning or testing. Replace the O-ring when it is deformed in order to avoid leaks during cleaning or testing. Filter Replacing Filter Replacing The filter tends to accumulate impurities after a period of using. Replace the filter periodically to ensure CNC work normally. The filter tends to accumulate impurities after a period of using. Replace the filter periodically to ensure CNC work normally. Procedures: Procedures: a) Loosen the locking screws on both ends of the gasoline filter. Cover the filter connector with a towel and remove the filter. b) Mount a new gasoline filter in the original direction, and tighten the locking clip. c) Turn on CNC and set a random pressure value to test if there is any leakage in the connectors. Auto Maintenance Equipment Division LAUNCH

4.Precautions Do not place anything on the control panel to avoid breaking the measuring cup because it is made from quartz. Do not place anything on the control panel to avoid breaking the measuring cup because it is made from quartz. Do not disconnect pipe before the real fuel pressure reaches “0”. Do not disconnect pipe before the real fuel pressure reaches “0”. Do not turn on the ultrasonic cleaner when there is no cleanser in the ultrasonic chamber, otherwise, the cleaner may be damaged. Do not turn on the ultrasonic cleaner when there is no cleanser in the ultrasonic chamber, otherwise, the cleaner may be damaged. After finishing the testing and cleaning, remember to pull down the curtain ( for CNC-601A/801A ). to prevent dust and impurities from entering the measuring cup and blocking the drain valve. After finishing the testing and cleaning, remember to pull down the curtain ( for CNC-601A/801A ). to prevent dust and impurities from entering the measuring cup and blocking the drain valve. Auto Maintenance Equipment Division LAUNCH

LAUNCH 5. Troubleshooting Auto Maintenance Equipment Division 5.1 No display after the cleaner is powered on. Check the fuse of the cleaner. Check the fuse of the cleaner. Replace the fuse (AC 250V/5A) if necessary. Replace the fuse (AC 250V/5A) if necessary. 5.2 Leaks at distributor coupler Check the O-ring. Check the O-ring. Replace the O-ring if necessary. Replace the O-ring if necessary. Don ’ t over-tighten the adjusting screw, otherwise it may cause leak at distributor coupler. Don ’ t over-tighten the adjusting screw, otherwise it may cause leak at distributor coupler. 5.3 The fuel pressure drop slowly The fuel pressure can not drop to zero with 1 ～ 2 minutes, adjust the overflow valve slightly with inner spanner counterclockwise. The fuel pressure can not drop to zero with 1 ～ 2 minutes, adjust the overflow valve slightly with inner spanner counterclockwise. 5.4 The buzzer rings continually when there is no fuel pressure The machine has the lack-fuel warning function and it will ring when the liquid in the fuel tank is lack, and then switch off the fuel pump and injectors and returns to the stop state. Supply the cleanser or test liquid to stop ringing. At this time, the fuel pump restarts only when pressing [RUN] pump. The machine has the lack-fuel warning function and it will ring when the liquid in the fuel tank is lack, and then switch off the fuel pump and injectors and returns to the stop state. Supply the cleanser or test liquid to stop ringing. At this time, the fuel pump restarts only when pressing [RUN] pump. 5.5 Draining the test liquid in glass tube requires pressing the [Drain] key more times. The solenoid valve will stop automatically after 15 seconds and drain more times if there is more liquid. The solenoid valve will stop automatically after 15 seconds and drain more times if there is more liquid.

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