Launch CNC-603A User manual

LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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All rights reserved! Any company or individual person shall not copy or backup this user manual in any format
(electronic, mechanical, photocopying, recording or other formats) without written permission from Launch Tech
Co., Ltd (hereinafter referred to as "Launch"). The manual is for the use of the products manufactured by Launch,
which shall not assume any responsibility for the consequences arising from the use of it to guide the operations
of other equipment.
Launch and its branches will not bear any liability for the fees and expenses incurred by equipment damage or
loss due to accidents caused by users or third parties, misuses and abuses, unauthorized modifications and repairs,
or operations and services not following launch’s instructions.
Launch assumes no responsibility for device damages or problems resulted from the usage of other parts or
consumables, rather than original products of launch or products approved by the company.
Official statement: the mentioning of the names of other products in this manual is to illustrate how to use the
device, with the ownership of the registered trademarks belonging to the owners.
The device is intended for the use of professional technicians or maintenance and repair personnel.
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Launch has registered its trademark in china and several other countries, and the logo is . Other
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LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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Important Safety Instructions:
⚫Please read the manual carefully before using the instrument for proper operation!
⚫Be careful when touching the device or hot parts of the engine.
⚫If the power cord is broken, please do not turn the device on and use it. If the device is dropped or
damaged, please use it after being inspected by a professional.
⚫Please do not hang the power cord on the edge of the table, chair or counter. Do not touch hot parts or
rotating fan blades.
⚫If it is necessary to extend the power cable, the level of the power cord should be higher than or equal to that
of the original power line. Overheat may occur if a power cable of inferior level is used.
⚫Do not connect the plug of power cord when not using the device. Do not remove the plug by pulling the
power line. It should be unplugged by hand.
⚫The device should be cooled completely before storage and the line should be wound up.
⚫The cleaning agent for the device is a flammable and weakly volatile liquid. Smoking and lighting fires are
strictly prohibited during the cleaning process.
⚫The instrument should be placed in a room that is not exposed to direct sunlight and is well ventilated, and
signs “Smoking and lighting fires strictly forbidden” and “Danger warning of inflammables” should be
posted.
⚫The operator’s hair, clothes, fingers and other parts of the body should be kept away from the operating parts
of the equipment.
⚫To prevent electric shocks, do you touch the operating equipment in wet areas or operate it in the rain.
⚫Please operate the device as described in the manual. Use accessories recommended by the manufacturer.
⚫It is strictly forbidden to open the ultrasonic system under the circumstances that ultrasonic cleaning agent
has not been added into the ultrasonic cleaning pool. Otherwise, the ultrasonic equipment may be damaged
easily.
⚫The housing of the device must be reliable and grounded.
⚫Automobile exhaust contains a variety of toxic and harmful gases (such as carbon monoxide, hydrocarbon,
nitrogen oxide and etc.). During the test, the exhaust should be directed outdoors and the room should be
well ventilated.
⚫The temperature of the exhaust pipe and water tank of the automobile’s engine is high. Do not touch them to
prevent burns.
⚫Please pull up the handbrake of the vehicle to be cleaned, shift the transmission to neutral position and block
the front wheel before free disassembly cleaning.
⚫Wear safety glasses when operating. Daily wear glasses are not safety glasses.
⚫When disconnecting a pressurized fuel pipe union, please cover the union with a towel to avoid getting hurt
by fuel gushing out and causing fires.
⚫Test solution is used by the main unit of the device uses, and ultrasonic cleaning agent is used for ultrasonic
cleaning.
: indicates where attention should be paid when operating the device.
: indicates the possibility of product damage and personnel injury during operation.
Please save the manual!

LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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Content
I. INTRODUCTION TO CNC-603A INJECTOR CLEANER & TESTER....................................................... 1
1.1 Brief Introduction ............................................................................................................................................ 1
1.2 Functions and Features .................................................................................................................................... 1
1.3 Working Environment and Specifications ....................................................................................................... 1
II. STRUCTURE OF CNC-603A INJECTOR CLEANER & TESTER............................................................. 3
2.1 Structure........................................................................................................................................................... 3
2.2 Control Panel................................................................................................................................................... 3
III. INSTALLATION AND CONNECTION......................................................................................................... 4
3.1 Installation ....................................................................................................................................................... 4
3.2 Connection....................................................................................................................................................... 4
IV. OPERATION PROCEDURES FOR CLEANING AND TESTING OF INJECTORS ............................... 4
4.1 Preparations ..................................................................................................................................................... 5
4.2 Cleaning and Testing Sequences...................................................................................................................... 5
4.3 Cleanup after Operation................................................................................................................................... 6
V. OPERATION PROCESSES............................................................................................................................... 7
5.1 Uniformity/Sprayability Test ........................................................................................................................... 7
5.2 Leakage Test .................................................................................................................................................... 8
5.3 Injecting Flow Test .......................................................................................................................................... 9
5.4 Auto. Test......................................................................................................................................................... 9
5.5 Ultrasonic Cleaning ....................................................................................................................................... 12
5.6. On-Vehicle Cleaning..................................................................................................................................... 13
5.7. Language Selection....................................................................................................................................... 15
5.8. Version Information...................................................................................................................................... 15
VI. SERVICE AND MAINTENANCE ................................................................................................................ 17
6.1 Handling, Storage and Installation Environment........................................................................................... 17
6.2 Common Quick-Wear Parts and Consumables.............................................................................................. 17
6.3 Precautions and Solutions to Common Problems.......................................................................................... 18
VII. COMMISSIONING AND MAIN PARTS.................................................................................................... 19
7.1 Schematic Diagram and Parts List of Whole Structure ................................................................................. 19
APPENDIX I: FUEL SYSTEM PRESSURE GAUGE OF TYPICAL VEHICLES ........................................ 21

LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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Special note: The manual introduces in detail the structure, functions, operation method and related
accessories of CNC-603A Injector Cleaner & Tester, and briefly explains the precautions in the process of
using, maintenance and handling of abnormalities. Launch reserves the right to change the design and
specifications of the product. The actual configuration shall be subject to the packing list.
I. Introduction to CNC-603A Injector Cleaner & Tester
Welcome to use CNC-603A Injector Cleaner & Tester manufactured by Launch Tech Co., Ltd. It is a mechatronic
product that combines ultrasonic cleaning technology with microprocessor oil pressure control cleaning and
testing technology. It is capable to simulate various working conditions of engine and perform cleaning and testing
for injector.
1.1 Brief Introduction
The User Manual is applicable to the following product:
⚫CNC-603A Injector Cleaner & Tester: a desk 6-cylinder injector cleaner and tester.
1.2 Functions and Features
Main Functions
⚫Uniformity / Sprayability test: to detect the uniformity of the fuel injection quantity of each injector and
monitor the spray status of injectors thoroughly and carefully by using the backlight, and to backflush
injectors.
⚫Leakage test: to test the leakage and dribbling conditions of injectors under system pressure.
⚫Injecting flow test: to detect the amount of fuel injected normally by injectors in 15 seconds.
⚫Auto. test: under specific working conditions and parameters, the precise simulation of test of injectors
under various working conditions
⚫Ultrasonic cleaning: to perform ultrasonic cleaning on multiple injectors at the same time, removing carbon
deposits on injectors completely.
⚫On-Vehicle Cleaning: Coming with a variety of disassembly-free cleaning connectors, the device can be
used to perform on-vehicle cleaning and maintenance for various vehicle models.
⚫Language selection: the system supports multiple languages and users can choose the appropriate language
according to their needs.
⚫Version information: to check the software version information of the current device.
Main Features
⚫Adopting ultrasonic cleaning technology, CNC-603A Injector Cleaner & Tester presents a strong cleaning
ability;
⚫The product also adopts fuel pressure adjustment and control technology by microcomputer, which can
ensure stable fuel pressure and wide adjustable range. It is applicable to vehicles equipped with a variety of
gasoline injection systems. Meanwhile, the automation of injectors’ cleaning and testing processes can be
realized.
⚫Thanks to the adoption of microcomputer automatic control and digital display technologies, the cleaning
and testing processes can be controlled automatically and the parameters of the main status can be monitored
in real time.
⚫Automatic fuel drain during a certain test can be realized via a routine, owing to the adoption of automatic
fuel drain control technology. Start or [stop] fuel drainage via the [Drain] button on the control panel in
running or stop state.
1.3 Working Environment and Specifications
Specifications:
Working Environment:
Power: AC110V-127V，50Hz/60Hz 3Amax
AC220V-230V，50Hz/60Hz 1.5Amax
Mechanical Power: 300W
Ultrasonic Cleaning Power: 100W
Speed Range for Simulation Test: 10～9990rpm
(step: 10rpm)
Environment Temperature: 0℃~+45℃
Relative Humidity: ＜85%
Strength of External Magnetic Field: ＜400A/m
Open fires is strictly prohibited within 2m.

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Timing Range: 1～9999s
Pulse Width Range: 0.5～25ms (step: 0.1ms)
Operating Volume: 3000ml
Packing Dimension: 458mm×433mm×537mm
Main Unit Dimension: 396mm×380mm×446mm
Net Weight:
Gross weight:

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II. Structure of CNC-603A Injector Cleaner & Tester
2.1 Structure
The schematic diagram of CNC-603A Injector Cleaner & Tester is shown in Figure 2.1:
Attention: there may be slight difference between the illustrations in this manual and the actual product.
The actual product prevails.
2.2 Control Panel
The control panel is shown in Figure 2.2:
Figure 2.2 Diagram of control panel
Figure 2.1 Schematic diagram of CNC-603A
1- Pulse line; 2-Fuel distributor assembly; 3-Observation window tube; 4-Ultrasonic cleaner;
5-Control panel; 6-Power switch; 7-Fuel pressure gauge; 8-Quick Connector ; 9-Fuel pump;
10-Fuel drainage pipe; 11-Automatic cleaning oil return port

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III. Installation and Connection
3.1 Installation
1. The installation steps of CNC-603A are as follows:
1）Move the packaged machine to a flat surface;
2）Check if the packaging, machine, accessory box, user manual, power cord and etc. are complete.
Figure 3.1
1- Fuel distributor assembly; 2- Observation window tube; 3- Ultrasonic cleaner; 4-Rotary knob;
5-Power outlet; 6- Fuel pressure gauge; 7-Fuel filling port; 8-Fuel pipe
3.2 Connection
Connection of the main unit: take the power line out of the packaging box and plug it into outlet in the bottom
right corner of the machine.

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IV. Operation Procedures for Cleaning and Testing of Injectors
4.1 Preparations
1） Remove the injector from the vehicle and check if the rubber seal of the injector is damaged. If it is damaged,
replace it with a seal of the same type before cleaning and testing to avoid leak. Put the injector into gasoline or
detergent, carefully remove the greasy dirt outside and then wipe it with a soft cloth.
2） Check and add test solution. Open the lid of fuel filling port and fill 2000ml of test solution into the fuel filling
port (pay attention to the control of the filling speed to prevent the test solution from overflowing from the fuel
filling port), as shown in Figure 4.1.
3） Turn on the power switch on the right side of the main unit, enter the main interface and press [Drain] button
to drain fuel.
4） Repeat Step 2 and 3, observe the level of the fuel pipe on the left side, pay attention to the filled test solution
shall not exceed the red line.
5） Add an appropriate amount of cleaning agent into the ultrasonic cleaning tank to immerse the needle valve of
the injector.
6） Put the injector into ultrasonic cleaning tank (with the end connecting the line facing up and the pointed end
facing down.
Attention: The main unit of the device uses test solution for uniformity / sprayability test, leakage test,
injecting flow test and auto. test. The ultrasonic cleaner uses the cleaning agent. Test solution and
cleaning agent are not included in the standard configuration and can be purchased separately.
Figure 4.1

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4.2 Cleaning and Testing Sequences
It is recommended to carry out the complete cleaning and testing procedures in the following order.
⚫Ultrasonic cleaning;
⚫Uniformity / Sprayability test;
⚫Leakage test;
⚫Injecting flow test;
⚫Auto. test.
Select the corresponding parameter according to different test items and set it. See “V. Operation Processes” for
details.
4.3 Cleanup after Operation
After the end of cleaning and testing, a cleanup should be done, which includes:
⚫Press [Drain] button on the control panel to drain test solution to a fuel container.
⚫Switch off the power switch and unplug the power plug.
⚫Take out the ultrasonic cleaning pool and pouring out all cleaning fluid completely shown in Figure 4.2, and
wipe the ultrasonic cleaning unit with a soft dry cloth.
⚫Wipe the table top of the machine with a soft dry cloth.
⚫To avoid volatilization, all the test solution in the fuel tank should be discharged. If it can be used again, store
it in a safe place. If it is dirty and cannot be used any more, dispose it according to relevant regulations.
Figure 4.2

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V. Operation Processes
5.1 Uniformity / Sprayability Test
Uniformity test is to detect whether the differences between the injection quantities of injectors meet the
requirements or within the specified error range under the same working conditions of the injectors on the same
vehicle. The test can reflect the electrical characteristics and the change in orifice diameter of the injectors, as well
as the combine effects of the blockage and other factors on the injector. Sprayability test is to detect the
atomization performance of injectors by observing the injection condition and atomization of injectors when
operating under certain working conditions.
5.1.1 Installation Method and Test Steps for Injectors
1) Select the appropriate connector according to the type of
injector, install the sealing ring (check if the sealing ring
of the connector is in good condition) and then mount
the connector with sealing ring at the corresponding
coupling element below the fuel distributor.
2) Install the injector in the forward direction (apply a little
lubricant on the “O” ring of the injector).
3) Adjust the screws to fix the fuel distributor and injector
assembly in the oil filler hole of the upper cover and
tighten the compression screws on both sides evenly. The
installation diagram is shown in Figure 5.1.
4) Connect the pulse signal line of the injector properly. If
there is test solution in the fuel tube, press [Drain] button
to drain the test solution out of the transparent tube.
5) As shown below: select [Uniformity / Sprayability test]
on the main interface, pressure as shown in Figure 5.2;
set corresponding operating parameters, as shown in
Figure 5.3; press [Run] button (Note: press [Drain]
button during the operation to drain or stop draining oil);
the system pressure can be adjusted by [Pressurization]
and [Depressurization] buttons on the control panel, as
shown in Figure 5.4.
6) The system will stop automatically after
completion of the test.
Figure 5.1
1-Fuel distributor compression screw;
2-Fuel distributor assembly; 3-Connector;
4-Injector.
Figure 5.2 Figure 5.3 Figure 5.4
5.1.2 Backflushing
Backflushing is limited to the top-supply injector by connecting the backflushing connector under uniformity /
sprayability test. Test solution enters from the outlet of the injector and flows out from the inlet during
backflushing. Backflushing can wash away the dirt inside the injector and dirt attached to the filter.
Method and Steps:
1）Find the backflushing connector (and select a supporting “O” ring to install it on the connector) installed
below the fuel distributor;

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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.

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Figure 5.6
3）The system will stop automatically after completion of the test.
5.3 Injecting Flow Test
Injecting flow test is to detect the amount of fuel injected normally by injectors for 15 seconds and then determine
if it is consistent with the injection quantity of standard injectors (or within its error range), referring to the
relevant technical manual of the injector). The change or deviation of the change reflects the change (wear) in the
orifice diameter or blockage of the injector, eliminating interference due to changes in electrical parameters of the
injectors.
Method and Steps (See 5.1 Uniformity / Sprayability Test for Installation Method)
1）Before the test, if there is test solution in the transparent tube, press [Drain] button to drain the solution out of
the transparent tube.
2）Select [Injecting flow test] on the main interface and press [Run] button. The system will start to work. At
this time, the pressure can be adjusted via [Pressurization] and [Depressurization] buttons, as shown in
Figure 5.7.
Figure 5.7
3）The system will stop automatically after completion of test.
5.4 Auto. Test
Auto. test includes the afore-mentioned tests (injecting flow test (15 seconds of normal injection, idle speed,
medium speed, high speed, acceleration and deceleration change and pulse width change test). The function can
simulate various working conditions of the engine more precisely and comprehensively, and can detect various
performance parameters of the injector.
Method and Steps (See 5.1 Uniformity / Sprayability Test for Installation Method)
1）Before the test, if there is test solution in the transparent tube, press [Drain] button to drain the solution out of
the transparent tube.
2）As illustrated in the following figure: Select [Auto. Test] on the main interface and then select a cleaning and
testing mode in the [Cylinder No./Mode] parameter selection menu, referring to the performance parameter
table of the injectors on the vehicle (setting is shown in Figure 5.8). The default mode is mode 1 (See “Flow
Chart of Auto. Test” for details on modes). Press [Run] to start the test, as shown in Figure 5.9. Mode 2 is
shown in Figure 5.10.

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Figure 5.8 Figure 5.9 Figure 5.10
3）The system is running and at this time, the pressure can be adjusted via [Pressurization] and
[Depressurization] buttons. Automatic cleaning and draining is shown in the following figures:
4）The system will stop automatically after completion of test.
Flow Chart of Auto. Test
There are 3 modes for auto. test: Mode 1, Mode 2 and Mode 3. Mode 1 and Mode 2 are shown below; while Mode
3 is to run Mode 2 after running Mode 1.

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Mode 1 of Auto. Test
Set the pressure: start
the fuel pump to adjust
pressure to setpoint
Inject normally for 15s
Observe for 30s
RMP: 650rmp, pulse
width: 3ms, counts:
2000
Observe for 30s
Drain for 30s
Observe for 30s
Drain for 30s
RMP: 6000rmp, pulse
width: 3ms, counts:
2500
Observe for 30s
Drain for 30s
End
Observe injection angle and
degree of atomization
Observe blockage and dripple,
normal injection test ended
Observe idle
conditions
Drain after idle speed
test
Drain after medium
speed test
Observe high
speed conditions
Drain after high
speed test
A
A
Drain for 30s
RMP: 4500rmp, pulse
width: 5ms, counts: 1700
Observe medium
speed conditions

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Mode 2 of Auto. Rest
5.5 Ultrasonic Cleaning
Ultrasonic cleaning is an advanced cleaning method that uses the penetration and cavitation shock waves
generated by the propagation of the ultrasonic waves in the medium to run a power cleaning on objects with
complex shapes, cavities and pores, in order to remove stubborn carbon deposits on the injector thoroughly.
Method and Steps:
1）Put the externally cleaned injector on the cleaning bracket in the cleaning tank;
2）Add an appropriate amount of cleaning agent into the ultrasonic cleaning machine (generally, the level of
Start the device and adjust the
pressure to an appropriate value
Speed change
test 3 times
Accelerate from 350rpm to
6000rpm (step: 50rpm)
一定转速下，占空
比每次递减
1/3
Decelerate from 6000rpm
to 350rpm (step: 50rpm)
Duty ratio decrease by
1/3 per time at a certain
speed
30 秒观测
Drain for 30s
End
Observe for 30s
Speed change test, 3 cycles
Accelerate from 350rpm to
6000rpm with duty ratio
changing by 1/3 and step by
50rpm
Decelerate from 6000rpm to
350rpm with duty ratio
changing by 1/3 and step by
50rpm
Drain after speed
change test
Duty ratio decrease by
1/3 per time at a certain
speed

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cleaning agent should be some 20mm above the needle valve of the injector);
3）Connect the pulse signal lines with injectors properly;
4）Select [Ultrasonic cleaning] on the main interface and set the time according to the demand (the default time
is 600s), as shown in Figure 5.11. Press [Run] button and the operation interface is shown in Figure 5.12.
Figure 5.11 Figure 5.12
5）The system will step automatically when the cleaning ends.
6）Take the injectors out of the cleaning tank and wipe off the cleaning agent on them with a soft cloth to
prepare for the next operation.
Note:
1) It is strictly forbidden to open the ultrasonic system under the circumstances that cleaning agent has not
been added into the ultrasonic cleaning pool. Otherwise, the ultrasonic equipment may be damaged easily.
2) It is strictly prohibited to immerse the pulse signal line connector along with the injector into the
ultrasonic pool for cleaning. Otherwise, the pulse signal line connector can be damaged easily.
5.6. On-Vehicle Cleaning
After the engine has been in operation for a period of time, its fuel flow may be blocked or become un-smooth
owing to buildup of dust and impurities in fuel channel. In addition, the carbon deposits and gum made by
combustion can easily adhere to the injectors, inlet and outlet ports, inlet and outlet hoses, throttle and
combustion chamber. So the fuel supply system, combustion chamber and injectors of the engine must be
cleaned on a timely basis. On-vehicle cleaning is a solution that can save your time and labor.
5.6.1 Procedures
1) Please check if the liquid inside the fuel tank is test solution or detergent before performing on-vehicle
cleaning. If test solution is in the tank, it is necessary to replace it with detergent. Drain the test solution
inside fuel tank into a pre-prepared container. If the drained test solution contains lots of impurities and
cannot be reused, please dispose it in a proper way and then add a small amount of test solution to clean the
fuel tank. If the drained test solution is relatively clean, please store it for later use.
2) Blend the detergent with the fuel at a certain ratio, and fill the mixture into the fuel tank. (Consult the user’s
manual of detergent for blending ratio.) Refer to the following table for filling amount:
No. of cylinders
6 cylinders
Amount
about 1500ml
3) Connect the pipeline of CNC-603A Injector Cleaner & Tester with that of the vehicle. For details, see “5.6.2
Line Connection”.
4) As shown in the following figures: Choose [On-vehicle cleaning] function on main menu, set the time, press
[Run] button and then start the engine for cleaning. Refer to the technical requirements of various vehicle
models to adjust the pressure via [decrease pressure] and [increase pressure] keys. Press [Stop] button at any
time to stop the cleaning.

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Setting interface Timing interface
Figure 5.13 Installation diagram
1- Fuel-return connector; 2- Fuel-return hose from engine; 3-Fuel-inlet hose to engine
5.6.2 Line Connection
There are two cases for the line connection: one is the connection with fuel-return hose and the other is the
connection without the fuel-return hose.
Connection with fuel-return hose
1)Disconnect the fuel supply hoses (C, D) and fuel return hoses (A, B) of the engine fuel system (when
disconnecting the fuel line connectors, cover them with towels). Choose proper connectors and connect them
to the B end and C end separately, and then connect the other ends to corresponding return hose and outlet
hose of the device. See Figure 5.14.
2)Connect the two other disconnected ends (A, D) with a proper hose, or remove the fuel pump fuse, or
disconnect the power cable of engine fuel pump.
Figure 5.14 Line Connection 1
1-CNC-603A Injector Cleaner & Tester; 2-Engine; 3- Fuel-return hose from engine; 4- Fuel-inlet hose to engine;
5-Auto filter; 6-Engine fuel supply hose; 7-Engine fuel return hose; 8-Fuel pump; 9-Fuel tank
Connection without fuel-return hose
1) Disconnect the fuel supply hoses (E, F) of the engine fuel system (when disconnecting the fuel line
connectors, cover them with towels), and then choose a suitable connector, connect it to the E end and
reconnect the fuel outlet hose of the device. Hang the fuel return hose. See Figure 5.15.
2) Block the other end of the disconnected end (F) with a stopper (for fuel pump with fuel return function only)
or remove the fuse of fuel pump or disconnect the power cable of engine fuel pump.
to 2 of fig. 5.14
to 3 of fig. 5.14

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Figure 5.15 Line Connection 2
1-CNC-603A Injector Cleaner & Tester; 2-Engine; 3-Stopper; 4- Fuel-inlet hose to engine; 5-Fuel tank;
6-Fuel filter; 7- Engine fuel supply hose; 8-Fuel pump；
5.6.3 Tidy up after on-vehicle cleaning
1) After the on-vehicle cleaning is completed, turn off the ignition switch of the vehicle. Restitute the hose
connection, start the engine and accelerate properly to check if there is any fuel leakage at the connectors or
in the hoses.
2) Please clean the fuel tank and the lines of the device with test solution at the end of the on-vehicle cleaning,
the specific procedures are: drain the detergent left in the fuel tank first and dispose it according to its
cleanliness. Add a small amount of test solution into the fuel tank, connect the fuel outlet hose of the device
to the oil return port and power on the device. Select “Leakage test” item and press [RUN] button to run the
device for about 23 minutes. After the running has stopped, drain the test solution from fuel tank and
dispose the drained liquid according to relevant regulations.
3) Clean up the site and tidy up the washing machine for later use.
Note:
1) When cleaning, care must be taken as the detergent is inflammable. Prepare at least one effective fire
extinguisher.
2) Be sure that all lines are well connected and there is no leakage before performing cleaning.
5.7. Language Selection
To adapt to the needs of different countries, multiple languages are available. Users can choose the appropriate
language according to their needs.
Method and Steps:
1) Move the cursor to the language selection icon on the main interface and press the knob to enter the
language selection interface, as shown in Figure 5.16.
2) Turn the knob to select the corresponding language, as shown in Figure 5.17. Press the knob and the
system will automatically change the language and exit the language selection interface automatically.
Figure 5.16 Figure 5.17
5.8. Version Information
Select version information icon on the main interface, as shown in Figure 5.18, and press the knob to check
to 3 of fig. 5.14

LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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information of the current software version, as shown in Figure 5.19.
Figure 5.18 Figure 5.19

LAUNCH CNC-603A Injector Cleaner & Tester User Manual
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VI. Service and Maintenance
6.1 Handling, Storage and Installation Environment
It is recommended to lift and carry the device with a manual or motorized forklift.
1. Handling
A. Mechanical handling and long-distance transportation are strictly prohibited when unpackaged.
B. When unpackaged, use a soft sling for lifting or handle it manually to avoid scratching the body.
C. The fluid in the fuel tank should be drained before packaging and handling to prevent spillage due to
shaking.
D. The device should be placed on the base and put in the packaging box before handling. Violent
vibrations and impacts should be avoided. The machine should be wrapped with materials similar to
plastic bags. After placing it into the packaging box, a type of filling materials, such as foam or sponge,
should be added between the device and the inner wall of the packaging box to preventing from being
scratched by shaking.
E. The maximum angle of inclination for the device must not exceed 45°. Keep upright!
2. Storing
A. The device should be stored in a dry place that is not exposed to the rain before unpacking.
B. The bar machine should be placed in a room that is not exposed to direct sunlight and is well ventilated
to avoid rain.
3. Installation Environment
A. The distance between the equipment and the surrounding walls or other objects should be more than
200mm. The machine should be placed in a ventilated environment with the ambient temperature
between 0℃ and 45℃. Keep it away from fire.
B. To ensure safe operation, make sure that the power outlet is grounded before switching on the power
supply.
Warning!
If you use the equipment with the power cable being replaced with another one, the level of the power cord
should be higher than or equal to that of the original power line.
6.2 Common Quick-Wear Parts and Consumables
1. Selection and Replacement of Cleaning Agent and Test Solution
Test solution is used when the device is testing and cleaning agent is used for ultrasonic cleaner. Test solution and
cleaning agent are not included in the standard configuration and can be purchased separately.
Note:
When the test solution has been used for a period of time, a lot of impurities will be accumulated in it. Test
solution containing lots of dirt cannot be used. Otherwise, the fuel pump and injectors may be blocked. When
replacing the test solution, unscrew the plug at the bottom of the machine to drain the solution. It is best to
drain the residual liquid and then inject a small amount of clean test solution in order to clean the interior.
2. Replacement of “O” Ring
The “O” ring will deform after many times of use, which can cause leakage easily. Therefore, it should be
replaced frequently.
3. Replacement of Purification Accessories
Fuel pump filter is a purification accessory and needs to be replaced regularly. The replacement cycle should be
decided according to the service condition and frequency of use. It is recommended to replace the filter once every
three months to ensure the normal operation of the system. After replacement, leak tightness test should be carried
out to check if there is any leak at the interface.
4. Replacement of Fuel Pump Filter
Fuel pump filter is located in the fuel tank at the bottom of fuel pump. During replacement, it is necessary to
remove the fuel pump cover, take off the fuel pump and fuel pump sleeve, unplug the fuel pump filter at the
bottom of fuel pump, install a new fuel pump filter, put the fuel pump and fuel pump sleeve back into the fuel tank
and put the fuel pump cover back on.