Precision for Professionals: Air Conditioner Service with Bosch ACS 751, 651 and 551

ACS 751, 651 and 551A/C service unit from Bosch for R134a

2

u ACS 751 – fully automatic: Air-conditioning system service for cars and comm. veh. (certified according to SAE J2788, CE, PED)u ACS 651 – fully automatic: Air-conditioning system service for cars and comm. veh. (certified according to CE, PED)u ACS 551 – commercial: semi-automatic with manual shutoff valves (certified according to CE, PED)

Bring on summer! With Bosch ACS you easily handle sweltering temperatures

Air-conditioning systems in vehicles require regular

maintenance. The market potential for intelligent

air conditioner service is therefore increasing all

the time. When it comes to these services, it is the

workshops with expertise and the right equipment

that come out trumps.

Driving comfort and safety through air conditioners Air conditioners are standard vehicle equipment: Nowa-days over 60 percent of small cars and over 90 percent of middle class and premium range models are fitted with air conditioners. And the share increases every day. f For most small cars, an air conditioner can at least be

ordered as an option.f The trend is increasing, both for passenger cars as

well as commercial vehicles.f Sooner or later there will be very few vehicles without

an air conditioner.

The new ACS A/C service unit from BOSCH: 3 models for every workshop profilef ACS 751: meets even the most exacting requirements for air conditioner services for cars and comm. veh. – certified pursuant to SAE J2788f ACS 651: robust and modern, for air-conditioning systems in cars and comm. veh.f ACS 551: commercial, entry-level unit with semi-automatic service function.

Stay cool with our air conditioner service: with the new ACS units from Bosch you can take advan-tage of comfort, precision and fully automated operations.

3

Service work on air-conditioning systems with R134a is still an everyday workshop task and this will continue to be the case for the next few years.Despite the introduction of the new refrigerant R1234yf, vehicle manufacturers are still permitted to supply new vehicles with R134a refrigerant in their air-conditioning systems until 2016. Over an average vehicle service life of 20 years this means that R134a air conditioner service units still generate a lot of revenue in workshop service.

ACS 751 with complete equipment:Perfect service for cars and comm. veh.

4

Intelligent operating concept: ACS 751 ACS 751

ACS 751: Safe and efficient, for professional and commercial air conditioner serviceThanks to high-precision measuring technology and fully automatic service process, the new ACS 751 A/C service unit from Bosch ensures that service work on cars and comm. veh. air-conditioning systems is environmentally friendly. The ACS 751 fulfills all the requirements of the technically demanding SAE J-2788 standard – the defini-tive US standard for A/C service units – and was awarded the relevant certification.

Fully automatic operations processThe unit performs all the following tasks without the need for manual intervention: refrigerant extraction and recycling, used oil draining, evacuation and the associated leak testing, refilling of new oil and UV additives, as well as precise refrigerant filling

Perfect air conditioner service for cars and comm. veh.The ACS 751 is suitable for fully automatic maintenance and repair work on most car and comm. veh. air-condi-tioning systems.

The advantages of the ACS 751 at a glance

Professional and comfortable f SAE J-2788 certification guarantees

professional and environmentally friendly handling of refrigerantf Fully automatic service process or

individually selectable manual service stepsfSelf-test before every initial start-up f Fault prevention; fault message appears for any

negative result of a system component testf Information provided on pending unit maintenancef Integrated separate databases for car and

comm. veh. set values, plus individual user data base

fShock-resistant refrigerant weighing device for exact determination of refrigerantf Easy-to-maneuver trolley with highly accessible service flapsfPrinter

Gerät wird ausgetauscht

Precise, practical, powerful:Detail-focused solutions for highest standards

5

The color display provides a clear overview

Fully equipped for the ultimate serviceThe top-of-the-range ACS 751 has all the equipment you need for service work, even on large air-conditioning systems:f Log printer integrated as standardf Large internal refrigerant tank (22 l)f High-performance vacuum pump (7.9 m³/h)f 3 pressure sensorsf Valve for automatically venting non-condensable gases from the refrigerant tankf 2 expert bottles and 1 HDPE bottlef Two cleaning programsf Automatic filling of contrast agentf Refrigerant recovery > 95 %f 4 integrated weighing devices (used oil, new oil, contrast agent and refrigerant)

Order number ACS 751 F 002 DG0 4AA

Navigation made easy f Color display f Coherent menu structure and intuitive operation

Speaks your language f Menu navigation in 29 languages

A reliable vehicle databasef Completely integrated vehicle databasef Regular updates for new models possiblef Quick selection for the last 10 vehicles servicedf Own vehicle database (e.g. regular customers)f Quick-start function

Clear and precise!

The ACS 651 has what you needTop-class equipment for cars and comm. veh.

6

ACS 651: Top-class equipment for professional air conditioner serviceThe ACS 651 is well-suited to workshops with a medium to high workload when it comes to air conditioner service. High-precision measuring technology and fully automatic process enable environmentally friendly service work on car and comm. veh. air-conditioning systems.

Fully automatic operations processThe elite ACS 751 unit performs all the following tasks without the need for manual intervention: refrigerant ex-traction and recycling, used oil draining, evacuation and the associated leak testing, refilling of new oil and UV additives, as well as precise refrigerant filling.

Order number ACS 651 F 002 DG0 4DA

The advantages of the ACS 651 at a glance

Practical: All functions accessible at a glance ACS 651

Professional equipment as standardf 2 pressure sensorsf 2 expert bottles and 1 HDPE bottlef Fully automaticf Two cleaning programsf Coolant can be re-filledf Integrated vehicle database for cars and comm. veh.f Automatic filling of contrast agentf Vacuum pump output 7.9 m³/hf Refrigerant recovery 94 %f 4 integrated weighing devices (used oil, new oil, contrast agent and refrigerant)f 22 l refrigerant tank

An ACS 551 really pays offThe entry-level solution for air conditioner service

7

ACS 551: The equipment you need for economical air conditioner serviceThe ACS 551 is the perfect choice if you want professional service at an attractive price, thanks to its famously precise measurement technology from Bosch, its solid range of equipment and its ease of use. Designed for workshops with low to medium workload when it comes to air conditioner service. Car air-conditioning systems can be filled neatly with the ACS 551, with the help of the comprehensive car database.

Semi-automatic operation processThe following operations are performed in part using automatic processes: refrigerant extraction and recycling, used oil draining, evacuation, leak testing, refilling of new oil and UV additives, as well as refrigerant filling. Manual intervention is possible at all times. If workshop customers require clean refilling of refrigerant in the air-conditioning system, ACS 551 can also perform this task with ease.

Order number ACS 551 F 002 DG0 4GA

Offers everything except a high price: The economical optionf 1 pressure sensorf 2 HDPE bottlesf Economical, semi-automatic device with manual shutoff valvesf Cleaning functionf Coolant can be re-filledf Integrated vehicle database for carsf Vacuum pump output 3.9 m³/hf Refrigerant recovery 80 %f 2 integrated weighing devicesf 12 l refrigerant tank

The advantages of the ACS 551 at a glance

Angle of display adjustable, practical storage compartmentACS 551

ACS 751, 651, 551 Technical data

8

Technical data ACS 751 ACS 651 ACS 551

Operation

Pressure gauge for HP / LP 100 mm 100 mm 100 mm

Indication of internal bottle pressure on display on display on display

Record printout on printer yes yes yes

Status display optical / acoustic optical / acoustic optical / acoustic

Integrated vehicle database Pass. car / Comm. veh.

Recovery / Recycling / Filling

Refrigerant R134a R134a R134a

Internal supply tank 22 l, PED-certified 22 l, PED-certified 12 l, PED-certified

Recovery rate > 95 % 94 % 80 %

Extraction capacity 18 kg / h 18 kg / h 18 kg / h

Vacuum pump capacity 7.9 m³ / h 7,9 m³ / h 3,9 m³ / h

Filter dryer capacity 75 kg 75 kg 75 kg

Filling accuracy +/- 10 g +/- 10 g +/- 10 g

Measuring technology 1 Precision scales 1 Precision scales 1 Precision scales

Accuracy of scales +/- 2 g +/- 2 g +/- 2 g

Certification CE / PED / SAE J-2788 CE / PED CE / PED

Oil / UV dye / used oil

Oil PAG PAG PAG

Bottle (size (3 250 ml) 1 bottle, 2 expert bottles 1 bottle, 2 expert bottles 1 bottle

Measuring technology 4 Precision scales 4 Precision scales 4 Precision scales

Accuracy +/- 1 g +/- 1 g +/- 1 g

General device data

Weight 110 kg 110 kg 110 kg

Dimensions (L x W x H) 725 x 652 x 1277 mm 725 x 652 x 1277 mm 725 x 652 x 1277 mm

Current supply 230 V 230 V 230 V

Operating temperature 5 – 50 °C 5 – 50 °C 5 – 50 °C

USB port yes yes yes

Service hatches 2 pcs. right and left 2 pcs. right and left 2 pcs. right and left

Vibration-resistant scales yes yes yes

Be safer –

check the air con!

9

Be safer –

check the air con!

The air conditioner in the vehicle and its components

The air conditioner: The working principleWhen the air conditioner is switched on with the engine running, the compressor draws cold, gaseous refrigerant out of the evaporator and forces it into the condenser. When compressed, the refrigerant heats up to approx. 60 – 100 °C. The hot gas, which is now highly compres-sed, is cooled down in the condenser by the external air (head wind or additional blower) that flows past. When the pressure-dependent dew point is reached, the refri-gerant condenses and is liquefied.

Coming from the condenser, the completely liquefied refrigerant enters the fluid tank where it is collected.

The refrigerant flows through the dryer, where any existing moisture and contaminants are filtered out.

From the fluid tank, the refrigerant flows on to the ex-pansion valve. Here, the highly pressurized, liquefied refrigerant is injected into the evaporator. In the eva-porator, the liquefied refrigerant pressure drops and it evaporates. The evaporation heat is drawn from the air flowing past via the evaporator fins, causing it to cool. The refrigerant, which is now completely gaseous again, is drawn by the compressor again and compressed.

How the air conditioner worksFunctions for comfort and safety

Condenser

Expansion valve

Service connection

Dryer

Head windRefrigerant pressure sensor

Compressor

Service connection

Fresh air blower

Evaporator

Air into the ve-hicle interior

Low

pre

ssur

e

High p

ressure

Of interest to your customers: 4 good arguments for regular air conditioning service1. Driving comfort and safety: A good climate in the vehicle

interior allows you to concentrate fully on driving.2. Environmental protection: Detection of defective air condi-

tioners prevents loss of refrigerant.3. Cost savings: Scheduled maintenance prevent complex

repairs.4. Pure air: During regular air conditioning service, also change the cabin filter.

The compressordraws cold, gaseous refrigerant from the evaporator and forces it into the condenser.

In the condenserthe gas is cooled under pressure by the head wind and is thus liquefied (condensed).

In the dryer and collectorcleaning and drying of the refrigerant takes place

The expansion valveinjects the cleaned refrigerant into the evaporator.

The evaporatorremoves the evaporation heat from the circulating air. As it flows through, the air cools down and is directed into the vehicle interior.

10

ACS 751, 651, 551 Special accessories

Designation Order number Description

UV leak detector kit 1 687 001 591 Professional tool set for injection of an UV contrast agent and identification of leakage in the refrigerant circuit.

Equipment supply: injector gun, 1 x UV cartridge, UV leak detection lamp, service hose, rapid coupling

Electronic 1 687 234 012 The electronic leak detector indicates leak detector refrigerant concentration by means of a loud audible signal. The brightness of the LED also visualizes the size of the leak. Its features include simple handling and two sensitivity levels.

UV lamp 1 687 550 014 Powerful 1-Watt leak detection lamp (internal battery) with 3 integrated (AA) batteries.

Flex scope F 002 DG1 438 The Flex scope makes leak detection in concealed areas possible. Leakages in the air conditioner are made visible by a flexible endoscope. For this purpose, a UV lamp can be adapted directly on the ocular.

Flushing adapter kit F 002 DG1 451 Special accessories kit for direct connection system (bypass) of air conditioning service hoses to the compressor's suction and pressure hoses. Also for bypassing expansion valves, com- pressors and driers with different connec- tivity options with hoses. Usage mostly with VW and Audi cars, also suitable for some other vehicles as well. Leak free connectivity depends on the personnel making the con- nection.

Air conditioner F 002 DG1 427 Specifically tuned accessory for bypassing flushing connection expansion valves, compressors and driers. Usage with most of the vehicle air condition- ing systems possible. The equipment supply includes special clamps with brass connec- tors and connectors for 3/8˝ service hoses. Leak free connectivity depends on the per- sonnel making the connection. One hose provided with kit, extra hoses would be needed.

11

For your servicethe right equipment

Designation Order number Description

Protocol printer F 002 DG1 449 Printer for retrofitting of ACS 600. Very simple installation. The printer is simply screwed in and the cables are connected.

Service hoses F 002 DG1 458 Mostly suitable for large commercial 6m vehicles. The equipment supply includes red and blue service hoses with a length of 6 m.

Cylinder adapter 1 687 010 148 Necessary for filling the internal refrigerant bottle. Adaptable to all conventional refrigerant refilling containers.

Service connections F 002 DG1 433 Special service coupling for connection Renault to Renault vehicles

Service connections F 002 DG1 432 Special service coupling for connection for BMW E60, Ford, in difficult-to-access area in certain BMW, Volvo Ford, Volvo

Digital thermometer 1 687 230 062 For recording temperature directly at the ventilation shaft – before and after air conditioning service. Temperature range from -50 °C to 150 °C

Perfect: The cabin filter program from Bosch for almost all vehicle types pro-vides more comfort, safety and health protection:

f Reliable filtration of dirt particles, exhaust gases and ozone

f Fewer deposits in the fan or on the front windscreen

Robert Bosch GmbH Automotive AftermarketBusiness Unit Diagnostics

73201 PlochingenGermany www.bosch-diagnostics.com

For over 120 years, Bosch innovations have been keeping vehicles on the road and getting people to and from their destinations while improving safety and peace of mind along the way. Bosch Automotive Aftermarket offers workshops and retailers a comprehensive portfolio of products that is unmatched worldwide:

f Efficient diagnostics f Innovative workshop equipment f Quick, reliable delivery f The world’s most comprehensive range of spare parts –

including both new and remanufactured f Workshop concepts to meet every requirement f Comprehensive training f Targeted sales and marketing support f A competent service hotline f 24-hour online workshop services f Affordable leasing services for workshop equipment and software

From parts to scheduling, organization and results, our solutions are combined with additional services to ensure your needs will be perfectly met, helping you to maximize your potential. Workshop tip:When servicing an air conditioning system, think about changing the cabin filter, because the service is only complete – and noticeable to your customers – with a new filter.

Bosch: bringing you the workshop of the future

AA

-DG

P/M

KT

WAW

43X

X D

08.

11

Tec

hnic

al c

hang

es a

nd p

rogr

am m

odif

icat

ions

are

res

erve

d

Robert Bosch Middle East FZEAA/SMA-WTEDubai, United Arab Emirates.Tel.: +971 4 2123300Fax.: +971 4 2123388info.aa@ae.bosch.comwww.bosch.com