Setting The Operating Mode; Setting The Safe Temperature Limit; Setting The Safety Temperature Limit; Setting The Temperature Control Mode - IKA RET basic Mode D'emploi

Setting operating mode
Operating the device in mode A, B or D
Mode A
All settings will be stored if the device is switched off or disconnected from
the power supply. The agitation and heating functions will be set to OFF
when the device is powered on.
Mode B
All settings will be stored if the device is switched off or disconnected from
the power supply. The agitation and heating functions will be set to ON
or OFF when the device is powered on, depending on the previous status
of the device.
Mode D
In Mode D the device behaves the same as in Mode A with the exception
that:
- The temperature setting must be confirmed by pressing the temperature
knob. To change the temperature setting, turn the temperature knob
until the desired value appears.
- The new value flashes for 5 seconds on the display. Confirm the new tempe-
rature setting by pressing the temperature knob, otherwise the temperature
setting value will skip back to its previous value.
Factory setting: mode A
The mode selected will be shown on the
xx A
display when the device is started up.
(xx: software version) mode
Change the mode
 Move device switch (A) to the OFF position
 Press and hold rotary knobs (C and D)
 Move device switch (A) to the ON position
 Release rotating knobs (C and D)
a The set value is indicated on the display (F)
xx A
Note: Mode D is available from software version 40
18
Er 5
Providing safety protection, Error 5 is taken to recognise that the sensor
has not been placed in the medium when the heating is switched on.
Note: The user can set a value from 1 to 30 min for this time limit
depending on the application.
If time limit is set to 0 min, the Error 5 detection is disabled.
This function will only be active if:
- Sensor temperature is < 50 °C
- Difference target temperature / sensor temperature > 5 K
Factory setting: 5 min
The time selected will be shown on the display when the device is started
up if the sensor is connected.
5 5"
t
time limit
Er 5 setting
Changing the Error 5 settings
 Set target temperature to 5 °C
 Switch off device
 Hold down temp knob
 Switch on device
 Select time value from 0...30 min (in 1 min steps) by turning the speed
knob
 Release the temp knob
Note: Error 5 is available from software version 40.

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
19