Preventing Spotting; Changing The Door Seal - Sirona DAC PROFESSIONAL Instrucciones De Uso

WARNING
Please note the following when removing the quick coupling:
 When emptying the storage chambers, stand to one side of the connection.
 When pushing the gray release key of the quick coupling, be sure to hold the hose securely in
place with your other hand in order to absorb the spring force of the catch.
Failure to observe this precaution may result in injury.

Preventing spotting

Only if you correctly clean instruments prior to sterilization can you avoid residues from the load or the
instrument preparation detaching under the steam pressure during sterilization. Residual soiling (e.g.,
traces of disinfectant) that become detached can block up the filter, nozzles, and valves of the autoclave
and become deposited as spots and residue on the instruments and in the chamber (see page 14).
All parts of the autoclave that come into contact with steam are made of non-corrosive materials. This
prevents any corrosion caused by the autoclave. If corrosion spots do occur, this is external corrosion.
If instruments are incorrectly prepared, corrosion can occur even on stainless steel instruments of
renowned manufacturers. A single instrument with corrosion is often all that is necessary to cause external
corrosion on the other instruments or the autoclave itself.
Remove external corrosion from instrument sets using a chlorine-free stainless steel cleaning agent (see
page 34, Cleaning) or send the damaged instruments to the manufacturer for reprocessing.

Changing the door seal

The door seal must not be greased or oiled. It must be kept clean and dry. If the door seal has shrunk or
become uneven, it must be replaced. Otherwise leaks can develop that lead to steam escaping or the leak
rate in the vacuum test being too high.
Proceed as follows to change the door seal:
Open the door of the autoclave and remove the old door seal. The door seal is only sitting in the
1.
groove of the door port (page 8, Fig. 3/5). Place the new door seal in the groove so that the wider
sealing surface is facing the chamber.
Fig. 4: Internal view
IMPORTANT!
You must observe the different widths of the sealing surfaces. The door will only close properly
and the chamber will only be tight if the seal is seated correctly in the groove.
Chapter 7 – Maintenance
35