IKA RCT basic Manual De Instrucciones página 13

Setting the temperature control mode
When using an external PT 1000 temperature sensor, the user can
choose between two types of control:
PI mode
Good control results, minimized 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
This activates or deactivates the two-point controller (2P) for the
external PT 1000 temperature sensor (2P appears on the display).
When switching on the device, 2P is also displayed next to the
operating mode A/b/d when the two-point controller is activated.
When the heating function is active in 2P mode, (with external PT 1000
temperature sensor) the actual temperature flashes - that notifies the
user that the process temperature has been greatly overshot!
Maintenance and cleaning
The device is maintenance-free. It is only subject to the natural
wear and tear of components and their statistical failure rate.
Cleaning
- For cleaning disconnect the mains plug!
- Use only cleaning agents which have been approved by IKA to
clean IKA devices.
These are water (with tenside) and isopropanol.
24
- Wear protective gloves during cleaning the devices.
- Electrical devices may not be placed in the cleansing agent for
the purpose of cleaning.
- Do not allow moisture to get into the device when cleaning.
- Before using another than the recommended method for
cleaning or decontamination, the user must ascertain with IKA
that this method does not destroy the device.
Ordering spare parts
When ordering spare parts, please give:
- Machine type
- Manufacturing number, see type plate
- Item number and designation of the spare part,
see www.ika.com.
- Software version
Repair
Please send instrument in for repair only after it has been
cleaned and is free from any materials which may constitu-
te a health hazard.
For this you should request the "Safety Declaration (Deconta-
mination Certificate)" from IKA, or use the download printout
of it from the IKA website www.ika.com.
Return the instrument in its original packaging. Storage packaging is
not sufficient. Also, please use suitable shipping package materials.
Accessories
• For further accessories see www.ika.com.
Error codes
Any malfunctions during operation will be identified by an error
message on the display (E and F).
Proceed as follows in such cases:
Error code Cause Effect
Er3 Temperature inside device too high Heating off - Switch off device and allow to cool down
Er4 Motor blockage Heating off
Motor off
Er5 No temperature increase in sensor at continuous Heating off - Place the sensor in the medium
temperature difference
Er6 Break in safety circuit Heating off - Plug in contact plug (L)
Er24 Surface temperature (temperature of control sensor): Heating off - Switch off device until the surface temperature of the base plate
of the base plate is higher than the set safe
temperature limit
Er44 Surface temperature (temperature of safety sensor): Heating off - Switch off device until the surface temperature of the base plate
of the base plate is higher than the set safe
temperature limit
Er25 Heating and switching element monitoring Heating off - Switch off device
Er26 Difference between temperature of safety sen- Heating off - Switch off device
sor and temperature of control sensor
control temperature > (safety temperature +
40 K)
Er46 Difference between temperature of safety sen- Heating off - Switch off device
sor and temperature of control sensor
safety temperature > (control temperature +
40 K)
If the actions described fail to resolve the fault or another error code is displayed then take one of the following steps:
- Contact the service department,
- Send the device for repair, including a short description of the fault.
- Switch off device using the main switch (A)
- Carry out corrective measures
- Restart device
Solution
- Switch off device
- Warning! Only to be carried out by authorized service personnel:
Carry out an internal test on the device to check the plug-in
connector for the motor
- Reduce the volume of the media
- Use a carrier fluid with better heat conductivity properties
- Replace the glass vessel with a metal pot
- Increase the "Time-out" period
- Plug in PT 1000 contact thermometer / temperature sensor
- Replace faulty connecting cable, plug, or contact thermometer
is lower than the selected safe temperature limit
- Set a higher safe temperature limit
is lower than the selected safe temperature limit
- Set a higher safe temperature limit
- Set the safe temperature limit > 55 °C
see also "Functional check of inactivating the safety circuit"
- Warning! Only to be carried out by authorized service personnel:
Carry out an internal test on the device to check the plug-in
connector for the heating element
- Warning! Only to be carried out by authorized service personnel:
Carry out an internal test on the device to check the plug-in
connector for the temperature sensor
- Warning! Only to be carried out by authorized service personnel:
Carry out an internal test on the device to check the plug-in
connector for the temperature sensor
25