Dentsply Sirona DAC Universal Operating Instructions Manual page 20

3 Product description
3.1 Functions
20
Internal cleaning
Internal cleaning ensures that the channels of the instruments are rinsed
thoroughly. For the internal cleaning of the instruments, water is forced
through the channels using compressed air. The channels are rinsed with
water 12 times during a cleaning cycle.
External cleaning
The instruments are first cleaned 5 times with unheated water in a pulse-
wash procedure (multicyclic cleaning method).
Then warm external cleaning is conducted up to 120 °C (248 °F).
The total number of washes is 5 cold and 1 warm, in total 6 washes.
Thermal disinfection
After external cleaning, the chamber is heated to 134 °C (273 °F) and the
instruments are thermally disinfected. Saturated steam is forced into the
chamber and then extracted back through the available air and / or water
channels of the instruments. This is known as the back-flush method.
2 different thermal disinfection programs are available:
● 134 °C (273 °F) with a holding time of 3 minutes
● 134 °C (273 °F) with a holding time of 18 minutes
Sirona Dental A/S
Operating Instructions DAC Universal
66 15 574 D3472
D3472.201.20.01.02 03.2019