Internal line cleaning is where automatic cocktail machines differ most from a simple shaker, and it’s a genuine maintenance step to build into regular use.
Most machines include a built-in cleaning cycle
Systems like the Bartesian or Barsys 360 generally include a rinse or cleaning cycle that runs water through the internal lines to flush out residue — check the specific machine’s manual for how to trigger and run this cycle.
Residue buildup affects both taste and mechanical reliability
Leftover mixer or spirit residue in internal lines can affect the taste of later drinks and, over time, contribute to dispensing issues — see our note on a cocktail machine that won’t dispense for a related troubleshooting path.
Regular cleaning cycles matter more than deep cleans alone
Running the built-in cleaning cycle regularly, rather than only when a problem appears, is generally the more effective maintenance pattern for keeping internal lines clear.
What to do in practice
Check the specific machine’s recommended cleaning frequency and run its built-in cycle on that schedule rather than waiting for a dispensing problem to prompt a clean.
What we would not do
Recommend manually disassembling internal lines on a machine designed around an automatic cleaning cycle, without first checking whether that cycle covers the need.
Last reviewed 25 August 2026