Keison TECHNE Tecal 140F, Руководство оператора

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PAGE 15
T e c a l 1 4 0 F, T e c a l 4 2 5 F a n d T e c a l 6 5 0 F O P E R A T O R ’ S M A N U A L
Setting the units for temperature
The unit will normally be set to display in °C, if you require it to work and
display in °F press both the
UP ARROW and DOWN ARROW buttons at the
same time. To convert back, press both buttons again.
Setting the Operating Temperature
1. To display the set temperature on the digital display, press and hold
the
SET Temperature button.
To adjust the set temperature, press the SET Temperature button and
hold it while pressing the UP or DOWN buttons. When the SET
Temperature button is released, the measured temperature is
displayed (in degrees Celsius).
2. Power is switched on to the block (and the indicator comes on) if the
set temperature is higher or lower than the block temperature.
3. When the measured temperature approaches the set temperature, the
"power to the block" indicator will begin to flash. As the measured
temperature stabilises the indicator will stay on for shorter periods.
4. There will be a time-lag between the block and the insert achieving the
set temperature due to thermal contact between them. The display
may reach temperature in 2 or 3 minutes while the insert may take 5
minutes or more to reach temperature.
After Use
1. When you have finished heating samples, remember that parts of the
unit – inserts and associated accessories – may be very hot. Take the
precautions listed earlier. We recommend that the inserts should be
allowed to cool to 70°C before being removed from the Tecal unit.
They will still have to be handled with care
2. If you need to remove an insert while it is hot, fit the extractor tool into
the locating holes and lift the insert out carefully. Never leave the
extractor tool in the insert while it is being used in the Tecal unit.
Overtemperature cut-out
The unit is fitted with an overtemperature cut-out. It will operate if a fault
develops and the unit exceeds its maximum operating temperature. The cut-
out will remove power to the heaters or peltiers and return the unit to
ambient temperature.
If the cut-out trips, the unit needs to be turned off and then turned on again
to reset it.
If the unit is switched off and then switched on again quickly this may cause
the overtemperature cut-out to trip. If this occurs, turn the unit off, wait 5
seconds or more then switch it on again.
Repeated tripping of the cut-out may indicate a fault and you should contact
your supplier for more information