Setting The Safe Temperature Limit; Setting The Safety Temperature Limit; Setting The Temperature Control Mode - IKA RET basic Betriebsanleitung

Setting the safe temperature limit

The maximum achievable heating plate temperature is restricted by an
adjustable safety temperature limit. Once this limit has been reached, the
device stops heating.
The safe temperature limit must always be set at least 25 °C lower
than the flash point of the media to be processed!
The adjustable maximum heating plate temperature is at least 10 °C under
the set safety temperature limit.
Setting range: [50 °C] to [max. SET temperature + 50 °C]
Factory setting: [max. SET temperature + 50 °C]

Setting the safety temperature limit

After switching on the device, the safety temperature limit can be adjusted
using a screwdriver.
Do not turn the setting screw beyond the clockwise or anticlockwise stop.
This will cause irreparable damage to the potentiometer.
• Set the main switch to the ON position
• Using the screwdriver supplied, turn the "Safe Temp" setting screw to
the clockwise stop.
• Use the temperature rotary knob to set the target temperature to the
desired "Safe Temperature" and wait until the temperature is achieved.
• Turn the "Safe Temperature" setting screw slowly anticlockwise until the
heating function switches off and the display shows Er 25 .
• The "Safe Temp" value is displayed on the screen.
Setting the safety temperature limit as to be done as described.
The value "Safe Temperature" shown on the display only serves for visua-
lization.
Functional test: safety circuit switch-off
• Heat the device to a temperature of over 50 °C.
• Set the safety temperature limit as far to the left as possible (50 °C) and
set the mains switch to the ON position.
• The display will show: Er 25
Setting temperature control mode
When using an external PT1000 temperature sensor, the user can choose bet-
ween two types of control:
PI mode
Good control results, minimised overshooting, slow rise in temperature.
2P mode (two-point controller)
Maximum heating rate, increased overshooting
Factory setting: PI mode
Changing the temperature control mode
1. Set target temperature to 2 °C
2. Switch off device
3. Hold down temp knob
4. Switch on device
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