Nahita 631 Plus Serie Manual De Instrucciones página 16

Operating mode
Note: Before the first use or if it has been moved to other location, do not turn the incu-
bator on until 2 hours have passed.
Press the on/off switch (1.2).
The PV display will show the real temperature inside the equipment, while the SP dis-
play will show the previously selected temperature.
Working temperature adjustment
The maximum working temperature is 250 ºC for ovens (series 631 plus and 632 plus)
and 80 ºC for incubators (series 636 plus). Proceed as follows to select the working tem-
perature:
Press Func (2.1). "Sp" will be shown on PV display, indicating that the temperature
value can be adjusted.
Use the buttons ▲ (2.2) and ▼ (2.3) to select the desired temperature value (shown on
SP display). Use the button ◄ (2.4) to go from one digit to the next.
Press Func (2.1) twice. The heating resistance will start working until reaching the selec-
ted temperature; the real temperature inside the equipment will be shown on PV display,
while the SP display will show the selected temperature.
Note: adjust the opening of the ventilation grilles (1.3), to adequate it to your needs.
If an alarm sounds continuously during operation, it means that the real temperature
exceeds the selected temperature in 10 ºC for ovens (series 631 Plus and 632 Plus) or in 5
ºC for incubators (series 636 Plus).
Let the equipment cool down and set it again.
Working time adjustment
By default, whenever turning the equipment on the working time is off, so the equip-
ment will operate until turning it off by pressing on/off switch (1.2). To work during con-
crete periods of time proceed as follows:
Wait until the equipment reaches the selected working temperature and press Func (2.1)
twice. "Sr" will be shown on PV display indicating that the working time can be adjusted.
Use the buttons ▲ (2.2) and ▼ (2.3) to select the working time within a range 1-9999 min
(shown on SP display). Use the button ◄ (2.4) to go from one digit to the next.
Press Func (2.1); the counting down will begin and the SP display will show the remai-
ning working time.
Once the selected time has passed, an alarm will sound and STOP will be displayed on
SP display. Press during 2-3 seconds ◄ (2.4) to silence the alarm.
Press again the button during 2-3 seconds ◄ (2.4) to start the previous programmed.
Note: If a new working time has to be programmed, as soon as you start again press
Func (2.1); then select the new working time.
Note: The button ◄ (2.4) allow you to stop the program at any time but just when you
have been program a specific time of work. When you work in continuous form you can
stop the program with the STOP/START button.
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Version 2 February 2015
Auto-adjust
Important: Make the auto-adjust before to introduce the sample in the equipment:
Program the temperature of work and press ▲ while 5 seconds.
The LED "AT" will be illuminate while start the auto-adjust.
The auto-adjust will be finish while the LED switch off.
It will be advisable to repeat this process 2-3 times, the precision will be better than
before.
After the auto-adjust, the equipment will work perfectly.
After operation do not forget to turn the equipment off by pressing the on/off switch
(1.2).
Configuration of parameter SC
If you detect temperature variations in the equipment, check the internal parameter SC
to adjust temperature. Follow this instructions:
Keep pressed "FUNC" key until 'LOCY' command appears at the upper display.
Press again "FUNC" key until SC command is displayed.
Set value to '0000' (its value by default must be 0000).
Press "FUNC" key to save this new value, return to 'LOCY' command, keep pressed
"FUNC" key and returns to general display.
Thin adjustment of inner parameter SC
To adjust real temperature (measured with an external thermometer) and temperature
displayed by the equipment, it is possible to make a thin adjustment through parameter SC:
Keep pressed "FUNC" key until 'LOCY' command appears at the upper display.
Press again "FUNC" key until SC command is displayed.
Select from tenths of degree, the difference between real and displayed temperature
with + or – value depending on necessary.
To save this value it is only necessary to go out this parameter setting by pressing
"FUNC" key, return to 'LOCY' command, keep pressed "FUNC" key and return to gene-
ral display.
Security
The equipment must be used by previously qualified staff that knows how to operate it
thanks to the user manual.
Put the equipment on top of a horizontal, plane and stable table making a free space
around so as the ventilation grilles are completely free of obstructions.
Follow all required applicable laws about safety and health (electrical security devices,
inflammable, toxic and/or pathological products, etc.).
Do not put the equipment near any warm supply (burners, blowlamps...), nor expose
it directly to the sun, etc. Avoid the presence of flammable or toxic products in the wor-
king area.
During operation dangerous materials such as flammable or pathological substances
must be out of the working area.
Version 2 February 2015 Instruction manual 5063xxx1
ENGLISH
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