5.1.1.3. Removing the main cover.............................................................................................................. 100
5.1.1.4. Removing the back housing .......................................................................................................... 101
5.1.1.5. Removing the main cover hinges ................................................................................................. 102
5.1.2. Operating arm .................................................................................................................................... 102
5.1.2.1. Fully removing the operating arm ................................................................................................ 102
5.1.2.2. Changing the cable carrier chain with the electrical hoses and dispensing tube .................. 102
5.1.2.3. Changing an electrical hose or the dispensing tube .................................................................. 103
5.1.2.4. Changing the X motor .................................................................................................................... 104
5.1.2.5. Changing the Y motor .................................................................................................................... 104
5.1.2.6. Changing the Z motor..................................................................................................................... 105
5.1.2.7. Changing the X motor belt ............................................................................................................ 106
5.1.2.8. Changing the Y motor belt............................................................................................................. 107
5.1.2.9 Changing the Z motor belt .............................................................................................................. 107
5.1.2.10. Changing the encoder-spring unit .............................................................................................. 108
5.1.2.11. Changing the belt return pulleys ................................................................................................. 108
5.1.2.12. Changing the X start photodetector ............................................................................................ 109
5.1.2.13. Changing the Y start photodetector ............................................................................................ 109
5.1.2.14. Changing the Z encoder photodetector.......................................................................................110
5.1.3. Dispensing system ..............................................................................................................................110
5.1.1.1. Removing the thermostated needle set ........................................................................................110
5.1.3.2. Changing the needle fan ................................................................................................................110
5.1.3.3. Changing the needle Peltier cell ...................................................................................................110
5.1.3.4. Changing the needle temperature sensor .................................................................................... 111
5.1.3.5 Changing the ceramic pump ...........................................................................................................112
5.1.3.6. Changing the dispensing pump seal .............................................................................................112
5.1.3.7. Changing the dispensing pump motor ..........................................................................................113
5.1.3.8. Changing the dispensing electrovalve ..........................................................................................113
5.1.3.9. Changing the container tube unit ..................................................................................................114
5.1.3.10. Changing the distilled water container filters ............................................................................114
5.1.3.11. Removing the racks tray................................................................................................................115
5.1.3.12. Changing the washing electrovalve ............................................................................................115
5.1.3.13. Changing the washing pumps ......................................................................................................116
5.1.3.14. Changing the load cell of the level control scales..................................................................... 116
5.1.4. Reactions rotor and reading..............................................................................................................117
5.1.4.1. Changing the rotor temperature probe .........................................................................................117
5.1.4.2. Fully removing the rotor .................................................................................................................117
5.1.4.3. Changing the rotor Peltier cells .....................................................................................................118
5.1.4.4. Changing the rotor cover detector.................................................................................................119
5.1.4.5. Changing the rotor start photodetector .........................................................................................119
5.1.4.6. Changing the rotor motor .............................................................................................................. 120
5.1.4.7. Changing the rotor belt .................................................................................................................. 120
5.1.4.8. Changing the lamp ......................................................................................................................... 121
5.1.4.9. Changing an optical filter .............................................................................................................. 121
5.1.4.10. Configuration of the filter wheel ................................................................................................. 122
5.1.4.11. Changing the filter wheel start photodetector ........................................................................... 123
5.1.4.12. Changing the filter wheel motor ................................................................................................. 123
5.1.4.13. Changing the lenses ..................................................................................................................... 123
5.1.4.14. Changing the optical fan.............................................................................................................. 124
5.1.5. Electronic Systems ............................................................................................................................ 124
5.1.5.1. Changing the microprocessor board ............................................................................................ 125
5.1.5.2. Changing the power supply board ............................................................................................... 125
5.1.5.3. Changing the needle conditioning board .................................................................................... 125
5.1.5.4. Changing the racks detection board............................................................................................ 126
5.1.5.5. Changing the photometric system board ..................................................................................... 127
5.1.5.6. Changing the front indicator board .............................................................................................. 128
5.1.5.7. Change the communications board ............................................................................................. 128
5.1.5.8.Changing the firmware program ................................................................................................... 128
5.2. RECOMMENDED PREVENTIVE MAINTENANCE .................................................... 128
5.3. CARE AND CLEANING ............................................................................................... 129