ThermoFisher Scientific Wellwash 4, Service Manual

Page: 70 / 156

Chapter 7: Maintenance
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 46
Note: Ensure that only fuses with the required rated current and of the
specified type are used for replacement. The use of makeshift fuses and
the short-circuiting of fuse holders are prohibited.
7.2 Disposal of materials
When disposing of used material, follow the Good Laboratory Practices. Refer
to local regulations for the disposal of infectious material.
Warning: The samples can be potentially infectious. Dispose of all used
microplates, microstrips, disposable gloves, syringes, disposable tips,
etc., as biohazardous waste.
7.3 Decontamination procedure
Decontamination should be performed in accordance with normal laboratory
procedures. Any decontamination instructions provided with the reagents used
should be followed.
A decontamination procedure is only recommendable when infectious
substances have been in direct contact with any part(s) of the instrument.
If there is any risk of contamination with biohazardous material, the procedure
recommended below or some other corresponding decontamination procedure
must be performed.
It is strongly recommended that the complete decontamination procedure be
performed before relocating the instrument from one laboratory to another. See
Section 7.4 How to pack for service.
Decontamination is not required for the proper functioning of the instrument.
Example of decontaminants
• Ethanol 70%
•
Virkon solution 1 – 3%
• Glutaraldehyde solution 4%
•
Chloramine T
•
Microcide SQ™ 1:64
Caution: If local or laboratory regulations prescribe regular decontamination, it is
not advisable to use formaldehyde, since even small traces of
formaldehyde affect the enzyme being used in EIA tests in a negative
way resulting in bad test results.
Caution: Do not use sodium hypochlorite as a decontaminant. The wash head will
be damaged by it.
Warning: Always use disposable gloves and protective clothing and operate in a
well-ventilated area.
7.3.1 How to decontaminate the instrument
1. Prepare the decontaminant: e.g., 200 ml 10% formaldehyde solution,
1 – 3% Virkon solution or 200 ml 4% glutaraldehyde solution (or another
agent recommended by your safety officer).