Page 1-28Check Every 140 Hours (Once a Week)1-4-3 Cleaning and Lubricating the NozzleThis part describes changing the nozzle holder set on the transfer head, the nozzles and thevacuum filter, and also describes cleaning and lubricating the optional nozzle changer and thenozzles set on it.∗ For DU/DHU specifications, it is necessary to remove the feeder base cover for the maintenance.“1-2-3 Setting and Removing the Feeder Base Cover (Only for DU/DHU Specifications)”Flow chart1. Selecting the operation table2. Removala. Removing the nozzle holder from the transfer head(Removing the nozzle from the nozzle changer)b. Removing the nozzle from the nozzle holder3. Removing the Vacuum Filter4. Cleaninga. Cleaning the nozzle holderb. Cleaning the nozzle(Cleaning the nozzle changer)∗ The nozzle is not allowed to accept an ultrasonic cleaning. If it accepts the ultrasoniccleaning, the nozzle reflector will corrode to cause a chip recognition error.5. Setting (Changing) the Vacuum Filter6. Cleaning the holder of the transfer head7. Checking and setting the nozzle arrangementa. Setting the nozzle to the nozzle holderb. Checking the nozzle arrangementc. Setting the nozzle holder to the transfer head(Setting the nozzle to the nozzle changer)8. Re-checking the nozzle arrangementTools Cloth, air ejector, grease gun, syringe and tweezers Required time 30 minutes444C-E-MMA01-A05-04