Knorr-Bremse SKP, Service Manual

Page 1: ...Doc No Y276710 EN Rev 001 May 2020 ELECTRICAL SCREW COMPRESSOR SERVICE MANUAL...

Page 2: ...ics of the Products or Systems described No liability can be accepted based on the information its use recommendations or advice provided In no event may we be held liable for any damage or loss excep...

Page 3: ...ent 9 2 2 4 Spares and wearing parts 9 3 TECHNICAL DESCRIPTION 10 4 INSTALLATION AND REMOVAL 11 4 1 Installation 11 4 1 1 Handling 12 4 1 2 Disconnect the compressor 13 4 1 3 Mechanical installation 1...

Page 4: ...cted downward movement of the chassis caused by sudden pressure loss in the suspension system ensure that the vehicle chassis is mechanically supported with a prop between the chassis and the axle or...

Page 5: ...ed to their correct assigned position if necessary this must be checked by PC Diagnostics Disposal of Waste Equipment by Business Users in the European Union Thissymbolontheproduct packagingorinuserin...

Page 6: ...does not claim to provide complete information for such target groups KNORR BREMSE reserves the right to change the unit or this document at any time without giving special notice This document is in...

Page 7: ...juries and or to damage to the unit or the environment DANGER word of alert Source of the danger Consequence of the danger Remedial measures NOTE Notes contain useful hints and additional information...

Page 8: ...the unit The validity notes in the document must always be taken into account The item number or type designation is stated on the name plate and must agree with the validity note stated in this docum...

Page 9: ...complete up to date and readable form The operator shall ensure that at the place of use the present document is regularly amended by or replaced with instructions based on statutory accident prevent...

Page 10: ...PTION The model SKP compressor is used to generate and supply compressed air in commercial vehicles Packaging Nominal dimensions in mm L x W x H 364 x 280 x 321 Weight Screw compressor with oil withou...

Page 11: ...ns restricted Installation instructions and installation drawings must be taken into account CAUTION Beware of installing untested units Safety will be reduced and functions restricted Make sure that...

Page 12: ...4 Y276710 EN REV 001 May 2020 INSTALLATION AND REMOVAL 4 1 1 Handling The device is fitted with a lifting eye This lifting eye is not intended to lift the complete assembly with e motor Fig 2 Lifting...

Page 13: ...tube 16 to avoid any contamination Purge internal pressure see section 5 1 1 Unscrew the 4 screws M12 on the e motor connection flange Unscrew the 2 screws M8 at the bottom of the compressor Move the...

Page 14: ...connection Once mechanically installed the unit must be connected to the air water and electrical systems See below the location of these different connections Air out Air in Air inlet Air outlet 42 N...

Page 15: ...rew Compressor INSTALLATION AND REMOVAL 4 1 5 Coolant connection Liquid coolant according vehicle manufacturer specification mixture of glycol water Water in Out Fig 6 Coolant connection dimensions Fi...

Page 16: ...switch is 24V power supplied and will be activated when maintenance oil level is reached If the level is OK no signal is supplied If the level is NOT OK 24V signal is supplied The compressor has to be...

Page 17: ...sure Particles ejected for instance will cause severe eye injuries Observe the safety regulations for pneumatic systems Prior to removal exhaust the pressure from the sub system CAUTION Beware of cont...

Page 18: ...cing filter Compressor visual check to track any potential issue leakages shocks Replacing the vehicle air filter according manufacturer requirements Operating hours are defined as when the compressor...

Page 19: ...design A Filling plug B Drainage plug gravity C Drainage plug vacuum D Coalescing filter E Air filter option F Temperature switch G Oil level switch H Electrical connector K Max pressure valve L Min p...

Page 20: ...high pressure Personal injury Prior to removal exhaust the pressure from the sub system while observing the safety regulations for electrical and pneumatic systems CAUTION Use of unacceptable working...

Page 21: ...d 50 C The top up must be made Vehicle stopped at horizontal position kneeling deactivated After the motor compressor set has been turned off Procedure Switch off the motor compressor set and prevent...

Page 22: ...systems CAUTION Use of unacceptable working substances Damage to equipment total failure possible The oil grade must agree with the installation drawing and or oil label Never mix different types of o...

Page 23: ...ed NOTE It is recommended to drain off the oil while the compressor is still hot 5 3 1 Oil drainage WARNING Possibility of pressure in the compressor housing Particles ejected for instance will cause...

Page 24: ...il pipes or oil cooler run the operational motor compressor set long enough to warm up the oil cooler Top up the oil see Section 5 1 2 Special tool adjustable strap wrench to unscrew oil filters Proce...

Page 25: ...cumulated inside the compressor start the compressor until oil cooler M see 5 1 is hot Top up the oil see Section 5 1 2 If the unit develops a malfunction that cannot be corrected by the measures desc...

Page 26: ...mpressor e motor is out of scope To identify components see 5 1 Problem Cause Action See section Motor compressor set fails to start Temperature switch F has turned off the e motor See problem Tempera...

Page 27: ...2 Air system is defective Check the air system delivery line can be clogged Compressor defective Remove the compressor set and send to KNORR BREMSE for repair Temperature switch F turns off the e mot...

Page 28: ...htening liquid Oil leakage because unloader valve open See Unloader valve K popping Coalescing filter D is saturated Exchange the coalescing filter Pressure at compressor outlet after stopping drops b...

Page 29: ...he environment Observe the officially applicable waste disposal regulations KNORR BREMSE units consist essentially of metal rubber and plastic parts Electronic components auxiliary products and workin...

Page 30: ...30 Y276710 EN REV 001 May 2020 NOTES...

Page 31: ...31 Service Manual Electrical Screw Compressor NOTES...

Page 32: ...bility of the workshop to ensure the vehicle is fully tested and in full functional order before the vehicle is returned into service Knorr Bremse accepts no liability for problems caused as a result...