Ratek TH8500 Programmable Immersion Heater Circulator - User Manual
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Page 11 of 28
ALWAYS
be 100% sure of the contents of your containers, the expected behavior once heated and the applicable
safety measures that should be employed when handling such substances.
ALWAYS
ensure your containers are firmly sealed and there is no chance of the sample leaking into the water bath .
ALWAYS
use plastic, stainless-steel or plastic powder-coated tubes racks and accessories in the water bath . This
will assist to prevent corrosion and thus help to extend the useful life of the Immersion Heater Circulator.
CAUTION
Poor water quality can lead to corrosion of the Immersion Heater Circulator even though it is constructed from high
quality stainless steel, and eventually lead to a potentially hazardous situation. The Immersion Heater Circulator is
intended for use with tap water or filtered water only.
Depending on local conditions, the water supply may be ferrous or overly chlorinated. Both of these conditions may
lead to corrosion if used with the Immersion Heater Circulator.
Distilled or de-ionized water may lead to corrosion if used with the Immersion Heater Circulator.
Use of any liquid medium other than that recommended above will void the product warranty.
Contact the supplier of your Immersion Heater Circulator before filling the water bath if you are unsure of your
water supply.
CAUTION
Before filling the water bath, ensure the mains power supply outlet is switched
off
and that the mains lead to the
Immersion Heater Circulator is
unplugged
from the mains power supply outlet.
The nature of pouring water is unpredictable and should be done carefully away from any electrical supply to avoid
the risk of electric shock.
Filling The Water
Bath
CAUTION
Always fill the water bath in a safe manner following the manufacturer’s guidelines where possible. It is important
that power to the Immersion Heater Circulator is switched off at the mains outlet before filling the water bath to
avoid possible electric shock.
CAUTION
Do not over-fill the water bath. If the bath is over-filled, water may spill out and create a hazardous situation if it
comes near an electrical current.
The minimum water depth is 120 millimetres below the bath rim.
The maximum water depth is 20 millimetres below the bath rim.
If the water level falls below this minimum level during operation, the Immersion Heater Circulator will cut power to
the heating element and the alarm will sound. If this occurs, the unit should be powered off, disconnected from the
mains electrical supply and the water level topped up with cold water. Be aware that this may result in the rapid
decrease in the water temperature and the effect of this in relation to the current procedure being carried out must