Bosch ACS 561 Setup guide

ACS 561
en Repair instruction
A/C Service Unit

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 2
© Robert Bosch GmbH
BOSCH
Robert Bosch GmbH, Postfach
1119D-73201 Plochingen
Direct any discrepancies or corrections
to the address above.

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
3
Table of ConTenTs
Safety Warnings ................................................................................................... 4
Introduction .......................................................................................................... 7
Introduction........................................................................................................................ 8
  UnitSpecications .......................................................................................................... 16
Maintenance Schedule.................................................................................................... 17
Diagnostics and Testing .................................................................................... 18
Updating System Software ............................................................................................. 19
Service Center Menu Options ........................................................................................ 20
Troubleshooting .............................................................................................................. 31
Error Messages................................................................................................................ 43
Electrical Operation and Troubleshooting....................................................... 46
Electrical System Operation........................................................................................... 47
Replacement Power Board ............................................................................................. 53
Replacement Control Board ........................................................................................... 54
Replacement High Pressure Cut-Out Switch................................................................ 55
Replacement Scale Assembly/Magnet .......................................................................... 56
Plumbing and Mechanical ................................................................................. 61
Plumbing and Mechanical System Operation............................................................... 62
Component Application Chart........................................................................................ 72
Flow Diagrams ................................................................................................................. 73
Service Bulletins ................................................................................................ 82
Appendix ............................................................................................................. 83

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 4
Explanation of Safety Decals Used on the Machine
Carefully read the instructions.
Do not use in open air in case of rain or high hu-
midity.
Wear gloves.
Wear protection goggles.
Alternating voltage.
Grounding protection.
Electrical shock hazard.
Safety Warnings
Explanation of Safety Signal Words Used in this Manual
The safety signal word designates the degree, or level, of hazard seriousness.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
CAUTION: Used without the safety alert symbol indicates a potentially hazardous situation which,
if not avoided, may result in property damage.
These safety messages cover situations Bosch is aware of. Bosch cannot know, evaluate, and
advise you as to all possible hazards. You must verify that conditions and procedures do not
jeopardize your personal safety.

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
5
ALLOW ONLY QUALIFIED PERSONNEL TO OPERATE THE MACHINE. Before operating
the machine, read and follow the instructions and warnings in this manual. The operator
must be familiar with air conditioning and refrigeration systems, refrigerants, and the
dangers of pressurized components. If the operator cannot read this manual, operating
instructions and safety precautions must be read and discussed in the operator’s native
language.
USE THE MACHINE AS OUTLINED IN THIS MANUAL. Using the machine in a manner for
which it was not designed will compromise the machine and nullify the protections provided.
PRESSURIZED TANK CONTAINS LIQUID REFRIGERANT. Do not overll the internal
storage vessel (ISV), because overlling may cause explosion resulting in personal injury
or death. Do not recover refrigerants into nonrellable containers; use only type-approved
rellable containers that have pressure relief valves.
HOSES MAY CONTAIN LIQUID REFRIGERANT UNDER PRESSURE. Contact with
refrigerant may cause personal injury, including blindness and frozen skin. Wear protective
equipment, including goggles and gloves. Disconnect hoses using extreme caution. Ensure
the phase has been completed before disconnecting the machine to prevent the release
of refrigeration to the atmosphere.
DO NOT BREATHE REFRIGERANT AND LUBRICANT VAPOR OR MIST. Refrigerant
reduces the oxygen available for breathing, resulting in drowsiness and dizziness. Exposure
to high concentrations of refrigerant causes asphyxiation, injury to the eyes, nose, throat,
and lungs, and can affect the central nervous system. Use the machine in locations with
mechanical ventilation that provides at least one air change per hour. If accidental system
discharge occurs, ventilate the work area before resuming service.
DO NOT DISPERSE THE REFRIGERANT INTO THE ENVIRONMENT. Such a precaution
is necessary to prevent the possible presence of refrigerant in the working environment.
TO REDUCE THE RISK OF FIRE, do not use an extension cord. An extension cord may
overheat and cause re. If you must use an extension cord, use the shortest possible cord
with a minimum size of 14 AWG.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of spilled or open
containers of gasoline or other ammable substances.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of ames and
hot surfaces. Refrigerant decomposes at high temperatures, freeing toxic substances to
the environment which are noxious to the user.
TO REDUCE THE RISK OF FIRE, do not use the machine in environments containing
explosive gases or vapors.
WARNINGS: To prevent personal injury,

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 6
DO NOT USE COMPRESSED AIR TO PRESSURE TEST OR LEAK TEST THE MACHINE
OR VEHICLE AIR CONDITIONING SYSTEM. Mixtures of air and refrigerant can be
combustible at elevated pressures. These mixtures are potentially dangerous and may
result in re or explosion causing personal injury and / or property damage.
HIGH VOLTAGE ELECTRICITY INSIDE THE MACHINE HAS A RISK OF ELECTRICAL
SHOCK. Exposure may cause personal injury. Disconnect the power before servicing the
machine.
NEVER LEAVE THE MACHINE LIVE IF AN IMMEDIATE USE IS NOT SCHEDULED.
Disconnect the electrical supply before a long period of inactivity or before internal
maintenance is performed. To ensure that unauthorized personnel cannot run the machine,
use the Lockout / Tag Out feature.
DO NOT MODIFY THE PRESSURE RELIEF VALVE OR CHANGE THE CONTROL
SYSTEM SETTINGS. Using the machine in a manner for which it was not designed will
compromise the machine and nullify the protections provided.
Further information regarding health and safety may be obtained from the refrigerant
manufacturer.

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
7
Introduction
In TroduCT I o n
Introduction .........................................................................................................8
Control Panel Functions ..................................................................................................9
Glossary ............................................................................................................................9
Setup Menu Functions ...................................................................................................10
General Maintenance .....................................................................................................12
 UnitSpecications ............................................................................................16
Maintenance Schedule......................................................................................17

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 8
Introduction
Introduction
Model ACS 561 is designed to be compatible with existing service equipment and standard
service procedures. This machine is a single-pass system that meets specications for recycled
refrigerant. Follow recommended service procedures for the containment of refrigerant.
The machine includes a high-vacuum pump for fast, thorough evacuation. The compressor pulls
the A/C system to -0.45 bar.
Note: Refrigerant systems require special oils. Refer to the A/C system manufacturer’s service manual
for oil specications.
Figure 1-1. ACS 561 Features
1 2
3
4
5
67
8
9
10 11
Front View:
1. Printer
2. Display and control panel
3. SD and USB slots
4. Fresh oil bottle (PAG or POE)
5. Used oil bottle
6. Cover
7. Front wheels with locking brake
8. HP Valve
9. LP Valve
10. Low pressure gauge (LP)
11. High pressure gauge (HP)
12
3
5
6
78
9
4
Rear View:
1. Circuit breaker
2. Master switch
3. Service quick-release coupling (low pressure)
4. Flush port
5. Service quick-release coupling (high pressure)
6. Service hose (2.5 m)
7. Service hose mount
8. Rear wheels
9. Power cord (socket)

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
9
Introduction
Control Panel Functions
ALPHA-NUMERIC KEYPAD allows the user
to enter data when called for by the machine.
ARROW UP moves selection of a menu item
to the previous item; turns up audio volume.
ARROW LEFT scrolls to the previous screen;
rewinds the video.
ARROW RIGHT scrolls to the next screen; fast
forwards the video.
ARROW DOWN moves selection of a menu
item to the following item; turns down audio
volume.
F1 makes a selection or answers a query.
F2 makes a selection or answers a query.
HELP displays information related to the cur-
rent display.
MENU accesses additional functions and setup
parameters.
Glossary
A/C System: The vehicle air conditioning sys-
tem being serviced.
Evacuation: Moisture and other incondens-
ables are removed from an A/C system by using
a vacuum pump.
Internal Storage Vessel (ISV): The rellable
refrigerant storage tank designed specically
for this machine; 8.9 kg capacity.
Machine: Model No. ACS 561.
Recovery/Recycling: Refrigerant is recovered
from an A/C system, ltered, and stored in the
ISV.
Refrigerant: R1234yf
Source (or External Tank) : A disposable
tank of new refrigerant used to rell the ISV;
not included.
Figure 1-2. Control Panel Keyboard
DATABASE supplies information
regarding charge capacity by ve-
hicle model.
AUTOMATIC activates a menu
that helps the user set up an
automatic recover / vacuum / leak
test / charge sequence.
RECOVER activates the sequence
to recover refrigerant from the
vehicle A/C system.
VACUUM activates the sequence
that pulls a deep vacuum on the
vehicle A/C system to remove air
and moisture.
CHARGE activates the sequence
that charges the vehicle A/C
system with a programmed amount
of refrigerant.
Menu
Help
R1234yf
Automatic
Recover
Vacuum
Charge
Database

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 10
Introduction
Figure 1-3. Setup Menu
Calibration Check
Use to verify internal scale calibration. Refer to
Calibration Check in the Maintenance section.
Edit Print Header
Programs information that will appear on the
printout each time a print function is used.
Pump Maintenance
Displays how long the vacuum pump has oper-
ated since the last oil change, and the amount
of time remaining until the next oil change is
needed. For maximum vacuum pump perfor-
mance, change vacuum pump oil every time the
lter is replaced. Refer to the Change Vacuum
Pump Oil in the Maintenance section.
Date and Time Setup
Program the machine for current date and time.
Filter Maintenance
The lter removes acid, particulates, and mois-
ture from the refrigerant. To meet requirements,
it is mandatory to replace the lter after 150 kg
(331 lbs.) of refrigerant has been ltered.
This menu item displays the lter capacity re-
maining until the machine locks down and no
longer functions. Refer to Filter Change in the
Maintenance section.
When the lter is replaced, refer to Change
Vacuum Pump Oil in the Maintenance section
of this manual.
Setup Menu Functions
Access the following functions by pressing the
Menu key and selecting Setup.
Flush Hoses
Flushes residual oil from the machine to pre-
pare for the service of next vehicle.
Select Language
Select a language for screen prompts. English
is the default language.
Oil Inject Adjust
Variables affect the accuracy of oil injection.
Use this menu item to adjust the oil inject
correction factor when using very high or low
viscosity oils, or if the machine is operating in
very high or low ambient tempuratures. Refer
to Oil Inject Adjust in the Maintenance section
of this manual for instructions.
Production Menu
For Bosch production use only.
Refrigerant Management
Displays the amount of refrigerant recovered,
charged, and replenished (for the life of the ma-
chine), and ltered since the last lter change.
Service Menu
For Bosch service center use only.
Select Units
Program the machine to display units of mea-
sure in kilograms or pounds. The default display
is kilograms.
System Flush
Provides a method of removing oil by forcing
liquid refrigerant through an A/C system or
components of an A/C system. After ushing,
the regerant is recovered by the machine and
ltered by the recycling circuit.
System Information
Displays versions of software, rmware, and
hardware used in the unit. Also displays lan-
guages available. This information is entered
into the system when software is initially loaded
and changes where necessary with any soft-
ware updates. Firmware and hardware versions
change when those component parts are up-
dated or replaced.
ss01374

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
11
Introduction
Unit Activation
Failure to register and activate the machine
within 30 days of initial startup will cause the
machine to lock out and no longer function.
Select this Setup Menu item and follow the
prompts before the trial period expires.
View Service Data
Displays vehicle information that was entered
into the Enter Service Data screen. Vehicles are
displayed by date of service and VIN number.
The database stores 20 VIN entries.
Refrigerant tracking
Function to memorize the refrigerant amount
recovered and charged for every vehicle.
The display shows five selection options:
• Display: It allows user to show data of
recovered and charged refrigerant.
• Print: It allows user to print out data
as: amount of refrigerant recovered and
charged for every vehicle.
• Export data to SD: It allows user to
extract the report with recovered and
charged refrigerant amount in the
vehicle. Data extraction via SD card,
recommended size 2 GB and FAT format
(support is not part of scope
delivery). Data are transferred as .csv file.
Pre-requisite is to create a folder in the
support with name U.
• Erase all data: It allows user to erase
all data stored in the A/C unit (password
02762).
• Disable Tracking: It allows user to
disable the Refrigerant tracking function.
Initial Setup procedure
The ACS 561 launches into the initial Setup
mode.
Carry out the following setup:
1. Select Language.
2. Select Units.
3. Set Date and Time.
4. Edit Print Header.
5. Service Vacuum.
6. Tank Fill.
At the end of the initial setup procedure it is
suggested to:
• Perform check scale.
• Perform air ow calibration.
NOTE: It is needed to complete all the setup
procedure sequence before to use the A/C unit.

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 12
Introduction
General Maintenance
Wipe off the machine often using a clean cloth
to remove grease and dirt.
Electrical Protection
The machine is equipped with a circuit breaker
on the control panel above the ON/OFF switch.
If the breaker trips, its button will pop out. A
tripped circuit breaker will cause the machine
to lose all power. Press the circuit breaker but-
ton to reset. If the circuit breaker does not reset
or continues to trip, there is a fault in the unit
electrical system. Troubleshoot and repair the
affected component(s).
Check for Leaks
The machine checks internal components for
leaks after the initial setup and every 10 days.
Over time, ttings loosen as the machine is
moved.
The machine also checks for internal leaks each
time a lter is replaced.
1. When prompted, connect both service
hoses to their storage ports.
2. Open both coupler valves.
3. Press F1 to perform the leak test.
To perform a manual leak test:
1. Turn OFF the main power switch, and dis-
connect the power cord from the outlet.
2. Remove panels as necessary to use a
leak detector to probe all connections for
refrigerant leaks. Tighten ttings if a leak is
indicated.
3. Reassemble body panels.
Tank Fill
This menu item is used to transfer refrigerant
from a source tank to the ISV.
1. Connect the low-side (blue) hose to the
liquid connector on a full source tank.
2. Position the source tank in such a way that
liquid refrigerant is supplied to the connec-
tion. Open the source tank valve.
3. Select TANK FILL from the Setup Menu.
The machine displays
FILL AMOUNT (KG)
XX.XXX
CONNECT LOW SIDE HOSE
TO SOURCE TANK
OK TO CONTINUE ESC TO QUIT
4. Enter the quantity to recover, and press F1.
Add at least 2 kg of refrigerant to ensure
enough is available for charging.
5. The machine automatically stops when the
preset tank ll level is reached. To stop the
tank ll before the preset level is reached,
select F2.
6. Close the valve and remove the hose from
the source tank.
7. Press F1 to return to the Setup Menu.

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
13
Introduction
Filter Change
The lter is designed to trap acid and particu-
lates, and to remove water from refrigerant.
To meet the mandate for adequate moisture
and contaminant removal, the lter must be
replaced after 150 kg (331 lbs.) of refrigerant
has been ltered.
The machine gives a warning when 125 kg
(276 lbs.) of the lter capacity has been used;
the machine locks down when the
150 kg
(
331 lb.) lter capacity has been reached and
will no longer function.
Check Remaining Filter Capacity
1. Select FILTER CHANGE from the Setup
Menu or when the machine prompts. The
machine displays
FILTER LIFE TIME: X.XX KG
REPLACE FILTER?
The machine displays amount of lter capac-
ity remaining until the machine locks down.
2. Select F1 to change the lter; F2 to resume
using the machine.
Replace the Filters
and Sample Hose Assembly
1. If F1 was selected to change the lter, the
machine clears the lter, then prompts for
the new lter code to be entered.
WAITING FOR FILTER TO BE CLEARED
FILTER SERIAL #
Use the keypad to enter the serial number
that appears on the new lter and select F1.
2. The machine displays
TURN UNIT OFF
REMOVE SHROUD AND REPLACE FILTER,
IDENTIFIER FILTER, AND
IDENTIFIER SAMPLE HOSE
Shut off the machine. Remove screws hold-
ing the shroud, and hang the shroud on the
back of the machine as shown in Figure 1-4.
3. Look at the new lter. Verify both o-rings are
lubricated and correctly located in the grooves
as shown in Figure 1-5. Thread the new lter
into place and tighten.
Caution: Use only authentic lters in this
machine. All performance tests and claims
arebasedonusingthisspeciclter.
OnlytheSP00101192lterincludesthecode
necessary to make the machine operable
again.
Note: If SERIAL NUMBER WRONG is displayed,
the serial number has been incorrectly entered or
the lter has already been used in this machine.
Figure 1-4. Filter Location
Figure 1-5. O-ring Location
O-rings O-rings
ss00722
Filter

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 14
Introduction
Change Vacuum Pump Oil
Vacuum pump oil must be changed with
every filter change, or more often as
necessary.
1. Select CHANGE VACUUM PUMP OIL from
the Setup menu or when prompted. The
display shows how long the vacuum pump
has operated since the last oil change.
OIL LIFE TIME
0 HOURS 0 MINUTES
CHANGE OIL?
2. Press F1. If the machine displays
OIL CHANGE
WAIT . . .
allow the vacuum pump to run for 30 sec-
onds to warm up the oil. If the oil is already
warm, the display shows
OIL CHANGE
UNIT CLEARING
WAIT
while the compressor runs to eliminate any
pressure in the vacuum pump.
3. After the compressor stops, slowly open the
oil ll port cover to verify there is no pressure
in the machine. Then carefully remove the
cover. See Figure 1-6.
4. The display shows
DRAIN THE USED PUMP OIL
AT THE END
ADD ABOUT 150 ML OF NEW OIL
PRESS F1 TO CONFIRM
Remove the oil drain tting cap, and drain
the oil into a suitable container for disposal.
Replace the cap.
5. S lowly add 150 ml of vacuum pump oil to the
pump through the oil ll port,
and press F1.
6. The display shows
POUR OIL IN THE PUMP
UP TO THE CORRECT LEVEL
PRESS F1 TO TERMINATE
S lowly add vacuum pump oil to the pump
through the oil ll port until the oil level rises
to the center of the sight glass.
CAUTION: To prevent personal injury,
do NOT operate the machine at any other
time without the oil ll port cap installed,
because the vacuum pump is pressurized
during normal operation.
NOTE: Review the laws in your jurisdiction to
determine correct disposal procedures for pump
oil. It is the responsibility of the user to determine
if a material is a hazardous waste at the time
of disposal. The user must ensure compliance
with all applicable laws and regulations.
7. Install the cap on the oil ll port, and press
F1.
Figure 1-6. Oil Ports
Ablassen
Schauglas
Öleinfüllen

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
15
Introduction
Edit Print Header
If the optional printer is installed, changes to
the printed text can be made. To make changes
to the text appearing in the header on each
printout:
1. Select EDIT PRINT HEADER from the
Setup menu.
2. The cursor should be blinking in the rst
eld. Press the Menu key to display a virtual
keyboard.
3. Use the arrow keys to move around the
keyboard. Press F1 to enter a character.
4. Press the Menu key to exit the keyboard
and move to the next ll eld.
5. Press the F2 key to exit the keyboard.
For more information about the text edit feature,
refer to the User Guide under the Edit Print
Header.
Calibration Check
This function is used to ensure the machine’s
internal scale is always calibrated. During this
test, use only the calibration weight that is pro-
vided with the machine.
1. Select CALIBRATION CHECK in the Setup
menu. The machine displays
PLACE SAMPLE WEIGHT ON SCALE
START EXIT
2. Refer to Figure 1-7, and verify the magnet
on the bottom of the machine is clean.
3. Attach the calibration weight to the magnet
on the bottom of the machine. Select F1.
• If the display shows
PROCEDURE COMPLETED
the scale is in calibration. Select F1.
• If the display shows
CALIBRATION REJECTED!
the scale is out of calibration. refer to the
Replacement Scale/Assembly Magnet in
the Electrical section and perform a Scale
Calibration followed by an upper limit
Calibration.
Figure 1-7. Calibration Check
Power Lockout/Tagout Switch
Never leave the machine live if an immediate
use is not scheduled. To ensure that unauthor-
ized personnel cannot run the machine, use the
Lockout / Tag Out feature.
1. Turn the Lockout / Tagout lever counter-
clockwise (CCW).
2. Insert a padlock or other item through the
aligned holes so the lever cannot be turned
clockwise (CW) to start the machine.
Calibration Check

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 16
Diagnostics and Testing
UNIT SPECIFICATIONS
GENERAL INFORMATION
Voltage: 220 – 240VAC (230VAC Nominal)
Frequency: 50 – 60 Hz
Amperage: 6.0 Amps @ 230VAC
Refrigerant: R1234yf (SAE J-2099)
Storage Temperature Range: -20°C to 70°C (0°F to 140°F)
Operating Temperature Range: 10°C to 50°C (50°F to 120°F)
Normal Ambient Operating Conditions
Temperature: 21°C ± 9°C (70°F ± 15°F)
Relative Humidity: 86% Non-condensing at 32.2°C (90°F)
Altitude: 0 – 2000 m (0 – 6561 ft.)
Refrigerant Removal
Amount: 95% within 30 minutes
Temperature: 21°C (70°F)
Accuracy: ± 30 g (± 1 oz)
Vacuum Pull
Volume: 40 Microns
Refrigerant Recharge
Accuracy: Full rated charge ± 15 g (± 0.50 oz)
Recycling Filter Type: 260 g
Unit Height: 127 cm
Unit Width: 69 cm
Unit Depth 66 cm
Shipping Weight: 80 kg
Certication: UL1963
SAE J-2843, CE marked, and others
Compressor
Voltage: 187-253VAC (230VAC Nominal)
Frequency: 50 – 60 Hz
Amperage: 2.6 Amps @ 230VAC
Locked Rotor Amperage: 13.5 Amps
Capacity 926 Watts
Oil Charge 300 cm³
Displacement 8.85 cm³
Vacuum Pump
Voltage: 220 – 240VAC
Frequency: 50 – 60 Hz
Amperage: 3.0 Amps @ 230VAC
Locked Rotor Amperage: 1/4 HP
Oil Capacity 310 ml
Displacement (Free Air) 70l/min (2.5CFM)
Stages 1
Ultimate Vacuum 40 Microns

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
17
Introduction
MAINTENANCE SCHEDULE
Due to normal wear and tear, these units require regular maintenance to ensure safe operation
and optimum performance. The above chart provides a schedule of the minimum recommended
maintenance tasks.
MAINTENANCE TASK RECOMMENDED INTERVAL
Changelter
After 150 kg (331 lbs.) of refrigerant has
been ltered. Refer to Filter Change in the
Maintenance section of this manual.
Change vacuum pump oil
When the lter is replaced. Refer to Change
Vacuum Pump Oil in the Maintenance
section of this manual.
Check casters and wheels for ease of
operation Monthly.
Check internal scale calibration Monthly. Refer to Calibration Check in the
Maintenance section of this manual.
Check machine for leaks
Monthly. Check hoses and connections for
leakage. Disconnect power, remove the
shroud, and use an electronic leak detector
to check ttings.
Clean air intake panels Monthly. Use a clean cloth.
Clean cabinet and control panel Monthly. Use a clean cloth.
Inspect power cord and hoses for cuts
and abrasions Daily.
Lubricate wheel bearings and brake
components Monthly.
Pressure Test Every 10 years — performed by an
authorized Bosch service center.

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 18
Diagnostics and Testing
dI a g n o s T I C s and TesTIng
Updating System Software...................................................................................19
Service Center Menu Options ..............................................................................20
Service Menu ......................................................................................................................20
Diagnostics and Troubleshooting..................................................................................... 20
Calibrate Load Cells ...........................................................................................................20
Calibrate Air Flow ............................................................................................................... 22
Set Tank Tare....................................................................................................................... 23
Service Clear....................................................................................................................... 23
Service Vacuum ..................................................................................................................23
Service Leak Check............................................................................................................ 25
End User Install ..................................................................................................................25
Maintenance Counters .......................................................................................................25
Output Test.......................................................................................................................... 27
Input Test............................................................................................................................. 27
Keypad Test ........................................................................................................................ 28
Set Serial Number............................................................................................................... 28
Set Mfg (Manufacturing) Date............................................................................................28
  Conguration ......................................................................................................................29
Set Boot Mode ....................................................................................................................29
Select Model........................................................................................................................ 30
Reset Board ........................................................................................................................30
Reset All ..............................................................................................................................30
Troubleshooting ....................................................................................................31
Grounding, Noise, and Power Issues ...............................................................................31
Will Not Power-Up, No Display..........................................................................................32
Will Not Fill Tank.................................................................................................................33
Will Not Perform Clearing ..................................................................................................33
Will Not Recover .................................................................................................................34
Will Not Drain Oil ................................................................................................................ 35
Will Not Air Purge ...............................................................................................................35
Will Not Evacuate (Vacuum) ..............................................................................................35
Fails Leak Test .................................................................................................................... 36
Will Not Inject Oil ................................................................................................................37
Will Not Charge...................................................................................................................37
Will Not Hose Flush............................................................................................................38
Will Not Print .......................................................................................................................38
Error Messages................................................................................................................... 39
Power Board Troubleshooting .......................................................................................... 40
Control Board Troubleshooting ........................................................................................ 40
Compressor ........................................................................................................................41
Vacuum Pump..................................................................................................................... 42
Error Messages .....................................................................................................43

ACS 561 Service Manual
Robert Bosch GmbH SP00D00517 2018-07-11
19
Diagnostics and Testing
UPDATING SYSTEM SOFTWARE
Download Current Software
Equipment Requirements:
(1) SD Card Reader/Programmer
(1) SD Card
These items may be purchased from an ofce
supply or retail store carrying computer elec-
tronics accessories.
Perform the following:
1. Connect the SD card reader/programmer
to your computer and insert the SD card.
2. Cancel any residual SD card content.
3. Download the current software from EDIS.
4. Unpack the software pack onto the SD card.
Install Current Software
The following instructions outline the basic
steps to complete this procedure.
1. Connect the unit to its power source. Verify
the power switch is OFF.
2. Insert the SD card into the unit SD card slot.
3. Turn the unit ON.
4. Follow prompts to install from the menu ap-
pearing when updating software.
5. Allow the unit to install the software com-
pletely and then remove the SD card.

ACS 561 Service Manual
Robert Bosch GmbHSP00D00517 2018-07-11 20
Diagnostics and Testing
SERVICE CENTER MENU OPTIONS
Service Menu
Consult the Technical Service Bulletins
for the latest software version as
applicable. To navigate through the
Service Menu, use Keypad and arrow
keys shown below.
These are the Service Options at the time of printing this service manual. Some
options may be added or deleted in future circuit board and software updates and
revisions.
Never change the default settings unless directed from the factory. Otherwise the
unit may fail to operate properly.
Never give the programming or service codes to customers.
Diagnostics and Troubleshooting
1. Turn unit on and allow it to run through the
boot sequence.
2. From the Setup Menu, press Service Menu.
3. Enter 4-3-5-0-6 at the password prompt,
then press Select (F1). The following
displays.
Calibrate Load Cells
The ISV scale is the only load cell in the
ACS 561. After selecting Calibrate Load Cells,
the following displays:
1. Select Calibrate Load Cells from the Ser-
vice Menu by pressing F1. The following
displays:
Perform the following:
4. To exit the Service Menu, press Exit (F2).
5. To perform any of the checks in the Service
Menu, scroll to the desired test listed below
and press, Select (F1).
• Calibrate Load Cells • Service Leak Check
• Calibrate Air Flow • End User Install
• Set Tank Tare • Maintenance Counters
• Service Clear • Output Test
• Service Vacuum • Input Test
• Keypad Test • Set Boot Mode
• Set SN
(Serial Number)
• Select Model
• Set Mfg Date
(Manufacturing Date)
• Reset Board
• Conguration • Reset All