Heidolph RotaChill - Manual (Page 27)

110-509 HD/EN 26
Checking the Over-Temperature Safety System
Your Circulator incorporates over-temperature protection according to IEC 61010. For optimum safety,
this system should be checked for proper operation at least every six months. This check must be
performed with the unit running.
1. Enter a temperature set point of approximately 50°C and then allow the bath to stabilize at that
temperature. The amount of time this will take will depend on the size of the bath and the difference
between the initial bath temperature and the Safety Set temperature.
2. Once the bath temperature has stabilized, slowly rotate the Safety Thermostat
counter-clockwise until you hear a soft “click;” the OVERTEMP or LOW FLUID
alarm symbol will appear on the display approximately 5-10 seconds later. At
this point, the heater will also turn OFF.
3. Slowly rotate the Safety Thermostat clockwise until the alarm symbol
extinguishes (you may also hear a soft “click”). The heater should turn back
ON.
4. Reset the Safety Set temperature to the desired temperature value
(see Controller Setup, Safety Set Temperature).
Cleaning Your Circulator
WARNING: It is the user’s responsibility to properly decontaminate the unit in the event hazardous
materials are spilled on exterior or interior surfaces. Consult the manufacturer if there is any doubt
regarding the compatibility of decontamination or cleaning agents.
Temperature Controller
Turn the Temperature Controller OFF by pressing and unplug power cord from the electrical outlet.
Wipe the housing with a clean cloth dampened with a mild detergent and water or mild all-purpose
cleaner.
CAUTION: Do not spray cleaning liquids directly onto the Temperature Controller or allow them to
enter the Controller’s vents. Do not use abrasives as these could scratch the housing or the digital
display.
Bath Reservoir
CAUTION: Do not use steel wool to clean your Circulator’s bath reservoir.
External Surfaces — Only mild detergents and water or an approved cleaner should be used on the top
deck and other external surfaces of your Circulator.
Pump Impeller — In the unlikely event that debris becomes lodged in the pump impeller, a soft brush can
be used to remove any lodged particles. If necessary, soak in a solution of distilled water and polyclean
Bath Cleaner to soften before brushing.
CAUTION: Do not use hard utensils or abrasive pads to remove trapped debris.
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