LAUNCH CNC-603A Injector Cleaner & Tester User Manual
8
2
）
Install the top-supply injector in reverse direction (outlet up, inlet down);
3
）
Select the corresponding coupling element under the injector according to the shape of injector
4
）
Adjust the screws to fix the fuel distributor and injector assembly in the oil filler hole of the upper cover
according to the height of injector and tighten the compression screws on both sides evenly, as shown in
Figure 5.5;
5
）
It is recommended to press [Drain] button to drain the remaining fuel in the transparent tube to avoid
overflow of test solution before backflushing.
6
）
Connect the pulse signal line of the injector properly; set the operating parameters and press [Run] button to
execute backflushing function; the system pressure can be adjusted by [Pressurization] and [Depressurization]
buttons on the control panel during backflushing.
7
）
The system will stop automatically after completion of the cleaning.
Figure 5.5
1-Fuel distributor compression screw; 2-Fuel distributor assembly; 3- Connector; 4-Injector
5.2 Leakage Test
Leakage test is to detect the leakage of the needle valve of the injector under system pressure and to detect
whether the injector is dribbling.
Method and Steps (See 5.1 Uniformity / Sprayability Test for Installation Method)
1
）
Before leakage test, if there is test solution in the transparent tube, press [Drain] button to drain the solution
out of the transparent tube.
2
）
Select [Leakage test] on the main interface and press [Run] button. The system will start to work. Judge the
leakproofness of the injector by observing whether the injector is dribbling or not. Typically, the dribbling
should be no more than one drop in one minute (or technically). The time set in the system is 60 seconds by
default, and the pressure value set for leakage test function should be 10% higher than that set by the
manufacturer. At this time, the pressure can be adjusted via [Pressurization] and [Depressurization] buttons,
as shown in Figure 5.6.
