ThermoFisher Scientific Wellwash 4, Service Manual

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Chapter 6: Operation
Thermo Scientific Wellwash
®
4 Mk 2 User Manual Rev.2.3, Cat. no. 1507340 35
6.6 Resetting
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.
6.7 Shutdown procedure
Warning: Remove any microplate still on the plate carrier. Dispose of all
microplates and strips as biohazardous waste.
The wash reagents may contain buffer salts, which can crystallize when the
washer is not in use. This may cause clogging of the wash/aspirate tips. To
avoid this, the following procedures should be followed.
6.7.1 Daily shutdown procedure
When the last wash cycle of the day is complete, switch the power OFF through
the switch at the rear of the pump unit. Fill the priming reservoir of the plate
carrier with distilled water and lower the wash head tips into the priming
reservoir. Do not detach the tubes unless you first open the wash bottle cap
slightly to release the pressure.
Wipe the instrument surfaces with a soft cloth or tissue paper moistened with
deionized distilled aqua, a mild detergent (SDS, sodium dodecyl sulfate) or soap
solution.
If you have spilt infectious agents on the instrument, disinfect with 70% alcohol
or other disinfectant. See the Wellwash 4 Mk 2 User Manual, Section 7.3.
Last of all, put the dust cover on.
6.7.2 Long-period shutdown
If the washer is not likely to be used for a long period, you should flush the
system through with distilled water prior to carrying out the DAILY shutdown
procedure. Empty and clean the waste bottle and check that the liquid trap is
dry.
When the washer is to be used after a prolonged shutdown, you should prime
the system (Section 6.3) at least four (4) times prior to carrying out any wash
function.
6.8 Emergency situations
In case there is any abnormal situation during operation, such as fluids spilling
inside the instrument, follow these steps:
1.
Switch OFF the instrument.
2. Unplug the instrument from the mains.
3. Perform appropriate corrective actions. However, do not touch the interior
of the instrument.
4. Contact authorized technical service or your local Thermo Fisher Scientific
representative.