Bosch ACS 251 User Manual Download

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ACS 251

en

Original instructions

A/C service unit

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Summary of Contents for ACS 251

Page 1: ...ACS 251 en Original instructions A C service unit ...

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Page 3: ... 14 6 3 2 Editing vehicle details in the custom database 14 6 3 3 Deleting vehicle details from the custom database 14 6 3 4 Viewing custom database information 14 6 3 5 Transferring the custom database from one ACS 251 to another 14 6 4 Accessing the custom database 15 6 5 Automatic mode 15 6 5 1 Overview of automatic mode 15 6 5 2 Selecting the vehicle from the custom database 15 6 5 3 Setting c...

Page 4: ...ot observed DANGER Immediate impending danger Death or severe injury WARNING Possible impending danger Death or severe injury CAUTION Possible dangerous situation Minor injury 1 1 2 Symbols in this documentation Symbol Designation Explanation Attention Warns about possible property dam age i Information Practical hints and other useful in formation 1 2 Multi step operation Instruction consisting o...

Page 5: ... render null and void all warranty claims 2 3 Obligation of contractor The contractor is obliged to ensure that all measures geared towards the prevention of accidents industrial diseases labor related health risks are taken and mea sures towards making the workplace fit for people to work in are carried out The contractor is bound to ensure that all electrical equipment and operating material is ...

Page 6: ...The ACS 251 must always be transported in a verti cal position Do not invert the ACS 251 R R There are no additional safety provisions for protect ing the ACS 251 unit against damage in the event of natural calamities like earthquakes fires floods etc R R Except for maintenance work do not remove any pressurized equipment inside the ACS 251 unit Adhere to the national laws or regula tions for ensu...

Page 7: ...car A C systems that use R134a 3 2 Delivery specification Description ACS 251 Hose HP Hose LP Quick coupler HP Quick coupler LP Can assembly Used oil Can assembly Fresh oil Operating instructions Adapter for filling internal refrigerant tank 3 3 Description of unit 459897_ 110Nkv 1 2 3 4 5 6 7 8 9 11 14 12 13 10 15 Fig 1 Front view 1 Handle x 2 2 HP gauge 3 Status and warning light 4 LP gauge 5 LC...

Page 8: ...ervice parameters can be done via the keypad The alphanumeric input keys can be used to enter letters and special characters in input fields In an input field pressing a key several times in succession displays all the characters it can be used for upper case letters special characters i i The alphabetical entries can be made in upper case only Keys Description AUTO Navigate to automode service me...

Page 9: ...ack the knurled portion gently to re lease the coupler To attach the coupler to the service connection on the on the car A C system place the coupler on the service connection and pull back the knurled portion of the coupler Press gently 3 3 5 Brakes The ACS 251 can be prevented from rolling away by ap plying brakes Fig 2 Pos 6 on the rear wheels 3 3 6 Power cable and master switch The power cable...

Page 10: ...el 3 Red and blue knobs 5 Open the rear panel Fig 5 Pos 2 6 Ensure that the red and blue knobs on the refriger ant tank are open 7 Close the rear panel 4 2 Before turning on for the first time 1 Remove the hoses HP and LP couplers from the packaging box 2 Apply the brakes on the rear wheels 3 Open the front panel 4 Open the screw cap of the vacuum pump Fig 6 Pos 1 1 2 45989 7_115 Nkv 3 4 Fig 6 Fil...

Page 11: ... a flat vibration free surface 2 Apply the brake to prevent the unit from rolling away 3 Connect the power cable to the power inlet of the ACS 251 4 Connect the power cable to the mains supply i i Refer chapter 9 for the specifications of power supply 5 Turn on the master switch The self test is initiated The software version business logic version and the serial number of the ACS 251 are displaye...

Page 12: ...isplayed on the HP manometer 7 Connect the power cable to the mains supply 8 Turn on the master switch 9 Press the MENU key on the keypad 10 Select Add Services Tank Fill 11 Follow the instructions on the screen i i To ensure reliable operation it is recommended to use the optimum refrigerant quantity The optimum refrigerant quantity for the ACS 251 is 4 kg 7 kg If the quantity is too less you may...

Page 13: ...act customer service if the problem persists 7302 PS Sensor failure R R Contact customer service R R For error messages 7501 7502 7503 8000 and C001 contact customer ser vice 9102 FACTORY SETTING Not Complete R R Self test failed See the self test report and take corrective action A101 TANK FILL Service Timeout Check for blockage in the ACS 251 A103 TANK FILL Internal Tank full R R Weight limit re...

Page 14: ...ch a maximum of 50 vehicles can be added The ve hicle model and R134a quantity for the vehicles can be entered at the workshop i i Refer to the vehicle documentation for the service parameters and other vehicle details To configure the custom database In the main menu select ACS Settings Custom DB 6 3 1 Adding new vehicle details to the vehicle database 1 Select New 2 Enter the following details M...

Page 15: ... LP quick couplers in the counterclock wise direction disconnect from the service connec tions on the vehicle A C system 7 Press 8 Press to start draining refrigerant from the hoses Once the refrigerant is drained a summary screen is displayed The servicing of the vehicle A C system is complete 6 5 3 Setting custom parameters i i Once set custom parameters are valid only for a single service i i B...

Page 16: ...he quantity drawn during the recov ery phase When filling a vehicle A C system for the first time refer to the vehicle documentation or the vehicle specific repair manual for the specified oil recharge quantity i i Use oil grade specified by the vehicle manufacturer Use only new oil to replace the oil removed during the recovery process Used oil should be discarded as per local regulations 6 6 5 R...

Page 17: ...he refrigerant in the vehicle 6 8 2 Hose drain After every recharge top up some quantity of refriger ant is left in the hoses It is necessary to drain the re frigerant from the hoses 1 In the main menu select A C Services and press E Alternatively press the MENU button on the keypad 2 Select Add Services and press E 3 Select Hose Drain and press E The Hose Drain menu is displayed 4 Turn the HP LP ...

Page 18: ... press E i i See chapter 5 for the description of the error messages 7 4 Vacuum pump oil change The vacuum pump oil needs to be changed after every 60 hours of operation When it is time to change the vacuum pump oil the message Replace Vacuum Pump Oil is displayed 1 Perform hose drain refer chapter 6 8 2 2 Disconnect the HP and LP hoses from the respective connectors 3 Turn off the master switch 4...

Page 19: ...to the bracket of the ACS 251 i i Use a suitable spanner to unfasten or fasten the nuts 8 Hold the filter drier firmly and loosen the fastening nuts Fig 9 Pos 1 5 9 Detach the filter drier Fig 9 Pos 2 10 Connect the new filter drier Ensure that the O rings are present at the mating part of the filter 11 Tighten the fastening nuts Ensure that you tighten the fastening nut only after ensuring that t...

Page 20: ...pter for the manifold while tightening the adapter for hoses Use tightening torque 9 5 N m 9 Connect the HP and LP hoses to the inline filters You have successfully replaced the inline filters 7 7 Self test When the ACS 251 is powered on a self test is initiated automatically It is also possible to trigger the self test manually In the main menu select ACS Maintenance Self Test Press E The self te...

Page 21: ...efrigerants lubricants and oils Please dispose of the LCD display in accordance with the local regulations for disposal of special waste Refrigerants that can no longer be used must be hand ed over to the gas suppliers for disposal The lubricants and oils recovered from the A C systems must be handed back to the designated return points 8 3 Disposal of filter drier Dispose the filter drier through...

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Page 24: ...ch Limited P B No 3000 Hosur Road Bangalore 560 030 Bangalore 560 030 INDIA www boschindia com Mailbox service2 in bosch com Technical hotline number Only for India 1800 108 108 1 F 002 DG9 425 2014 03 20 ...

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