Troubleshooting; Maintenance And Cleaning; Technical Data - IKA RET control-visc Betriebsanleitung

Troubleshooting

The device will indicate that there is a fault by displaying an error
message "Er X" (see table) on the screen.
Heating will be switched off permanently (exception: WD - see
table).
The stirring function continues to operate at the pre-set speed if
there is a fault in the heating circuit (exception: WD - see table).
In order to reset the device after a fault, it may need to be discon-
nected from the power supply for several seconds. The period the
device is switched off may also need to be longer if the tempera-
tures need to be counterbalanced (residual heat display may no
longer be active; see "Residual heat display").
Error messages and troubleshooting table
Fault Description Causes
Er 2 In remote operation (PC) • PC does not transmit any data
within the set watchdog time
mode with activated
• Connection to PC interrupted
watchdog function in
mode 1: no communica-
tion between PC and RET
control-visc
Er 3 Device internal tempera- • Heat accumulation
ture exceeds 80 °C heating plate and housing
• Permitted ambient temperature
exceeded
Er 4 Difference between target • Motor blocked or overloaded
and actual speed exceeds
300 rpm
Er 5 No temperature increase • Sensor not in medium
in sensor at continuous • Volume of medium to be mea-
temperature difference sured too large
(selected time in menu) • Heat conductivity of medium to
be measured too low
• Heat conductivity of the vessel is
too low
• In the case of indirect heating,
the overall heat conductivity re-
sistance is too large
Er 6 Interruption in safety cir- • Defective connection cable
cuit
Er 13 SAFE TEMP P adjustable • Target/current different of the
safety circuit defective adjustable safety circuit for mini-
mum temperature monitoring
Er 14 Short circuit in temperatu- • Short circuit in temperature sen-
re sensor 1 sor plug
• Short circuit in the cable or tem-
perature sensor
Er 21 Fault during heating plate • Safety relay does not open
safety test
Er 22 Fault during heating plate • S_CHECK cannot
safety test H_S_TEMP
Er 24 The temperature of the • SAFE TEMP H (Probe) has been
heating plate exceeds set to lower than the current tem-
SAFE TEMP H (Hotplate) perature of the heating plate
• Disconnection of heating plate
control temperature sensor
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The safety circuit test takes place within 20 seconds of switching
on the device; after the test, the other monitoring functions are
activated.
If a fault cannot be eliminated directly, you must perform a
RESET (see "Settings" menu). If the faults still cannot be elimi-
nated, the appliance must be inspected by a technical service
technician.
Effect Solutions
Heating switched off • Change watchdog time
Motor switched off • Transmit data from PC within set
watchdog time (OUT_WDx@m)
• Check cable and plug
between Heating switched off • Switch device off, leave to cool and
switch on again
• Change experiment
• Observe maximum permissible am-
bient temperature
Heating switched off • Reduce load torque or use smaller
Motor switched off magnetic rods
• Reduce target speed
Heating switched off • Place the sensor in the medium
• 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
Heating switched off • Replace cable
Heating switched off • After switching on, change the
SAFE TEMP to a different value; if
this solves the issue, the previous
value can be reset by switching the
device off and on again
Heating switched off • Check the plug
• Replace the temperature sensor
Heating switched off • Switch device off, leave to cool and
switch on again
generate Heating switched off • Switch device off, leave to cool and
switch on again
Heating switched off • Leave the heating plate to cool
• Set the SAFE TEMP H (Hotplate)
higher
Fault Description Causes
Er 25 Heating switching ele- • Heater control circuit switch (TRI-
ment monitoring AC) short-circuited
• Safety relay has interrupted the
heating circuit
• Heater or the supply line is dis-
connected
• Interruption in heating plate safe-
ty temperature sensor
Er 26 Difference between inter- • Irregular temperature distribution
nal heating plate control across heating plate due to spo-
and safety temperature radic heat dissipation
sensor too large • Defective control or safety tem-
perature sensor
Er 31 Defective monitoring of
the heating control circuit
(TRIAC)
Er 41 Bar decoupling • The bar has broken away four
times in a row without an explicit
change in the target value

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.
- 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.

Technical data

Rated voltage
or
or
Frequency
Power input
Display
Timer
Stirring
Motor:
Effect Solutions
Heating switched off • Switch device off, leave to cool and
switch on again
Heating switched off • Switch device off, leave to cool and
switch on again
• Ensure regular heat dissipation
when using metal blocks, etc. on
the flat surface of the heating plate
Heating switched off • Contact customer service
Target speed reduced • Select a lower target speed
by at least 300 rpm • Select a smaller stirring bar
Heating switched off
Spare parts order
When ordering spare parts, please give:
- device type.
- serial number, see type plate.
- position number and description of spare part,
see www.ika.com.
- software version (second value displayed when switching on the
device)
Repair
Please only send devices in for repair that have been clea-
ned and are free of materials which might present health
hazards.
For repair, please request the "Safety Declaration (Decontami-
nation Certificate)" from IKA or use the download printout of it
from IKA website at www.ika.com.
If your appliance requires repair, return it in its original packaging.
Storage packaging is not sufficient when sending the device - also
use appropriate transport packaging.
VAC 220...230 ± 10%
VAC 115 ± 10%
VAC 100 ± 10%
Hz 50 / 60
W 650
TFT
h 99 h 59 min 59 sec
ball bearing mounted, brushless EC motor
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