ThermoFisher Scientific Wellwash 4, Service Manual

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Chapter 8: Troubleshooting
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 53
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.
Warning: When the instrument is connected to the mains supply, the opening of
covers or the removal of components is likely to expose live parts.
Before the instrument is opened for any adjustment, replacement,
maintenance or repair, disconnect it from all voltage sources by
disconnecting the mains supply cable.
Any adjustment, maintenance or repair of the opened instrument under voltage
should be avoided, if possible, but, if unavoidable, should be carried out only
by a skilled technician aware of the hazard.
The same precautions applicable when using any electrical equipment should
naturally be observed with this instrument. DO NOT touch switches or electrical
outlets with wet hands. Switch the instrument OFF before disconnecting it from
the mains supply.
8.3.3 Mechanical and environmental
Mechanical
The wash head is a free-moving mechanical device controlled by the instrument
and not directly by the operator. It is designed for "hands-off" operation and
should be used as such. Never reach into the workspace while the instrument is
performing a wash cycle. If it is necessary to stop the operation of the
equipment, press the RESET button on the keypad.
Never open the wash bottle, detach any of the tubing or press the black top of
the pinch valve without first releasing the pressure by slightly opening the
bottle cap. Let the hissing sound end prior to proceeding.
Environmental
Infectious clinical samples and corrosive fluids are commonly used with this
equipment. The "hands-off" nature of the system allows the user to wash the
reaction wells without getting into direct contact with these fluids. However,
wells that have been in contact with potentially hazardous fluids must be
handled before and after the wash process, and this should be done with
utmost care. Hand and eye protections should always be worn as well as
corrosive resistant laboratory coats.
If you are using a washing reagent that is either volatile or easily splashing, or
when you are washing microplates with samples of human or animal origin,
keep yourself at a safe distance from the instrument while it is operating to
avoid exposure. Place the instrument into a fume hood.
When spills get into contact with the carrier slideway, it should be
decontaminated with a hard surface disinfectant (see Section 7.3).
Observe Good Laboratory Practices (GLP) when handling potentially hazardous
samples.