Grant Instruments R Series - 3 Operation; Controls and Features

3.Operation
3.1 Controlsandfeatures (seeFig2)
Withtheswitchinthepositiontheminimumoperatingtemperatureis5°C.
Belowthis,thecoolingwillbeswitchedoffbyalowtemperatureprotecting
thermostat.Ifwaterisusedinthebaththiswillpreventitfromfreezing.Inthe
positionthethermostatisbypassedallowingtheunitto
runatitsminimumtemperature.
Todraintheunitfirstconnectasuitablelengthofhosing
withaboreof12.7mm(½’')tothedraininsert.Havethe
nonconnectedendoftubinginareceptacle,suitablefor
theliquidtobedrained.Pushthedraininsertintothe
drainbodyandlettheliquiddrain. Toreleasethedrain
insertpushdownthegreybuttononthedrainbody.Liquid
tobedrainedshouldnotbebelow10°Corabove40°C.
Enablesaccesstothecondenserforeasycleaning.
Refrigerationunitpower(mains)switch.
Overtemperatureprotectionre-set.
5°Switch.
Drain/Draininsert(notfittedonR1/R1L Models).
Removablegrille
Theunitisprotectedfromoverheatingbytheovertemperaturecut-out. This
willbeactuatedbetween110°Cand120°C. Tore-settheunitfirstwaitforthe
liquidtocoolbelow100°C.Un-screwtheblackcap,underthisisthere-set
button,pushintore-set.
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Fig2
Page8
Lowtemperaturebath/circulator
Operatinginstructions
Version4-Jan2010
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