Maintenance Of The Unit; After-Sales Service - Tecno-gaz Astra 3S Mode D'emploi

From the tests made, SONICA
cescens, Pseudomonas aeruginosa ATCC 15442, Pseudomonas aeruginosa ATCC 14502, Proteus rettgeri,
Staphylococcus aureus ATCC 114, Staphylococcus aureus ATCC 6538, and Klebsiella pneumoniae.
Composition
100 g of solution contain: Active Ingredients: Chlorexidine gluconate g 1,50; Cetrimide g 15,00; Excipients: Isopropyl
alcohol (F.U.I.) g 6,00; Essence g 2,00; Colouring E110 g 0,10; Purified water q.b. to g 100,00
Abstract:
The efficiency of a decontamination procedure by sonication for different dental instruments after experimental microbial
and viral contamination was tested.
Both germicidal and virucidal activity of sonication in presence or absence of a cationic bio-biguanid disinfectant was
assessed following three different disinfection/sterilisation protocols. Dental instruments were contaminated with a mixed
culture of Streptococcus faecium, Staphylococcus sp., Pseudomonas aeruginosa, Mycobacterium sp., Escherichia coli
and Bacillus subtilis, or with Polio virus type 1 and Herpesvirus simplex type 1 (HHV1, following the new herpesvirus
denomination), exposed to ultrasonic treatment in an ultrasonic bath and the surviving microorganisms titered. The results
showed that an effective disinfection of dental instruments, expressed by an equal or higher than 4 logs microbial and
viral reduction, can be obtained after 15 min or 10 min sonication in the ultrasonic cleaner equipped with a Sweep System
Technology. Conversely, by the combined action of chemical disinfection and ultrasonic treatment in the same device, a
sterilising effect was obtained after only 5 min for microbial and after 10-15 min for virally contaminated instruments. The
synergistic effect of chemical and physical means, as already accepted as an effective cleaning procedure of medical
instruments, can therefore be applied to obtain a safe and effective sterilisation of dental instruments potentially conta-
minated by organic fluids and dental material harbouring pathogenic microbes and viruses.
AUTHORS: *Patrizia Di Gennaro, _*Giuseppina Bestetti, °Antonia Radaelli, §Manuela Paganini, §Carlo De
Giuli Morghen, §Margherita Neri
*Department of Environmental Sciences, University of Milano-Bicocca, 20126 Milano, Italy. §Departments
of Medical Pharmacology and °Pharmacological Sciences, University of Milano, 20129 Milano, Italy.
_Corresponding author: Prof. Giuseppina Bestetti, Department of Environmental Sciences, University of
Milano-Bicocca, P.zza della Scienza, 1–20126 Milano Italy, Phone: 0039-2-64482925; Fax: 0039-2-
64482996; E-mail: Giuseppina.Bestetti@unimib.it

MAINTENANCE OF THE UNIT

Cleaning is the only maintenance operation normally required. It must be performed with the
unit switched off in electrical terms. Only use mild detergents for cleaning the inside of the tank and
a soft cloth for cleaning the outside parts such as the control panel and casing. Do not leave depo-
sits of dirt inside the tank above all if your model is fitted with a liquids drain device. If the liquid outlet
hole is obstructed by dirt residues, clean it by means of a blunt flexible stick, taking care not to perfo-
rate the rubber tube connected.
Chapter 6

AFTER-SALES SERVICE

If the unit does not function:
• Check that the plug is inserted properly in the power socket;
• Check the level of liquid in the tank.
The after-sales service must only be provided by technicians trained by the manufacturer. It is dangerous for any-
body else to carry out repairs. If you require assistance, contact your retailer as soon as possible. He will send the
unit directly to the manufacturer for the appropriate repairs. Otherwise the manufacturer can be contacted directly
at the following address:
TECNO-GAZ S.p.A.
Strada Cavalli, 4
43038 Sala Baganza (Parma)
Tel. +39 0521 833926
Fax +39 0521 833391
info@tecnogaz.com
www.tecnogaz.com
20
®
CL 4% has shown that it acts against such bacteria as Citrobacter freundi, Serratia mar-
WARNING