ThermoFisher Scientific Wellwash 4, Service Manual

Page: 52 / 156

Chapter 6: Operation
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 28
Warning: If the instrument is used in a manner not specified by the manufacturer,
the protection provided by the instrument may be impaired. See Section
9.1 General specifications.
Caution: Handle the microplate with care to avoid any contamination of the
instrument and the subsequent specimens. The contamination of the
specimen will lead to incorrect results.
If the contents of the microplate does spill, however, follow the
decontamination procedure presented in Section 7.3. Also, follow the
system supplier's instructions in regard to the reagent kit and specimen
handling in the event of contamination.
Warning: 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 opening the
cap all the way.
Warning: If you are using a washing reagent that is either volatile or splashes
easily, keep yourself at a safe distance from the instrument while it is
operating to avoid exposure. Place the instrument into a fume hood.
Warning: When 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.
Note: If the pump fails to start or if the bottle caps are loose, an audible
warning will be heard and the VAC FAIL indicator will illuminate. This
condition will clear once the pump has started. If the VAC FAIL indicator
does not clear after the pump has started, the RESET key must be
depressed. Also, check that the waste bottle is not full.
Note: The priming procedure must be repeated whenever the POWER switch
has been engaged or if there has been an interruption of the power
supply.
Caution: Make sure that sufficient reagent is present in the wash bottle to
complete the required protocol. See Fluid consumption in Section 9.1
General specifications.
Caution: If you use the programmable switch card, ensure that the 8 WAY –
12 WAY switch is in the correct position (for either the 8-way or the
12-way wash head).
Caution: If removable-well microplates are being used, make sure that there are
no missing wells in the rows to be washed and that all the wells are at
the same level .
Note If you press the RESET button on the keypad at any stage, this will stop
the immediate washing sequence and reset the system to its pre-
programmed state.