Thermo Scientific Sorvall Legend Micro 21R Operating Instructions

OperatingtheThermoScientificSorvallLegendMicro21RCentrifuge
Switchingonthecentrifuge
Setthemainpowerswitchoftheinstrument.Thedisplayshowsthattheinstrumentisgoingthroughan
internalcheckofitssoftware.Afterthischeckthedisplayswitchedintothecurrentvaluemode.The
speedandtheremainingruntimeshow0;therefrigerationunitdisplayshowsthecurrenttemperature
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ofthesample.
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Openingthelid
Themainpowermustbeontoopenthelid.Toopenthelidpressthe“open‐lid”button.
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Closingthelid
Thecentrifugelidislockedbyslightlypressingdownthefrontpartofthelid.DONOTSLAMTHELID!
Fillingthecentrifugetubes
Thesmallerthecentrifugeimbalance,thebettertheseparation,becauseseparatezonesarenolonger
perturbedbyvibration.Itisthereforeimportanttobalancethecentrifugetubes
aswellaspossible.To
minimizeimbalanceyoushouldfillthetubesaseve nlyaspossible.Youcanachievethisbyeye,
however,youmustnonethelessensurethatoppositetubesarefilled tothesamelevel.
Placingthetubesintherotor
Therotormustbeloadedsymmetrically.Whenloadingtherotoronlypartially,youmustensurethat
oppositeboresalwaysreceivetubesofequalweight(whencentrifugingasinglesample,placea
centrifugetubee.g.filledwithwateropposite).Thefollowinggivesexamplesforproperloading:
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Thermo Scientific Sorvall Legend Micro 21R Specifications

General

Maximum Speed	21, 000 RPM
Refrigeration	Yes
Temperature Range	-10 °C to 40 °C
Control Type	Microprocessor-controlled
Power	230V, 50/60Hz
Timer	Up to 99 minutes or continuous