Decontamination in primary care dental practices - Gov.uk

14 Installation, validation, maintenance and testing of ultrasonic cleaners14 Installation, validation, maintenance andtesting of ultrasonic cleanersMaintenance and servicing14.1 The ultrasonic cleaner/irrigator should bemaintained and serviced in accordance with themanufacturer’s instructions. However, in theabsence of these instructions, the schedulesoutlined in this chapter should be followed.Validation14.2 Validation is needed for new equipment atinstallation and annually thereafter. It will also benecessary to validate equipment after any majorrepairs have been carried out. Manufacturers’guidance on validation should be followed;alternatively, the following protocol is suggested.(Tests not defined in the referred Standards aredefined in Chapter 15.)Test Description Performed by ReferenceVerification of calibration The accuracy of indicatingand recording instruments isCP(D)/service engineer BS EN ISO 15883:1 andBS EN ISO 15883:2checked against certificatedsource instrumentsAutomatic control test The values of cycle time andtemperature are noted atrelevant stages of the cycleso that a fingerprint of theautomatic cycle can be made.CP(D)/service engineer Paragraphs 15.3–15.5Drainage test (whereapplicable)Lid (ie door) interlockFluid emissionChemical dosing test (whereautomated)Cleaning efficacy testThermometric test (wheremachine also disinfects)Ultrasonic activity testEnsures free-flowing drainage CP(D)/service engineer BS EN ISO 15883:1 andBS EN ISO 15883:2Confirms safety to operatorand exposure to completecycle onlyConfirms door-sealprevents contamination tosurroundingsConfirms repeatable detergentadditionUsing an artificial soil toclean a worst-case load, theexposure to ultrasonic activityfor a sufficient time period isconfirmedThermocouples are attachedto worst-case load to confirmthat disinfection parametersare acceptableThe use of aluminiumfoil within the cleanertank indicates a uniformdistribution of ultrasonicactivityA wand meter may be used aslong as points of measurementare compatible with the foiltest and are fully recordedCP(D)/service engineerCP(D)/service engineerCP(D)/service engineerCP(D)/service engineerCP(D)/service engineerBS EN ISO 15883:1 andBS EN ISO 15883:2BS EN ISO 15883:1 andBS EN ISO 15883:2BS EN ISO 15883:1 andBS EN ISO 15883:2BS EN ISO 15883:1 andBS EN ISO 15883:2BS EN ISO 15883:1 andBS EN ISO 15883:2CP(D)/service engineer Paragraphs 15.6–15.1359