IKA RET control User manual

RET basic safety control
20000005392
RET basic_082016

14
Contents
Declaration of conformity
Safety instructions
Page
Declaration of conformity 14
Safety instructions 14
Unpacking 16
Correct use 16
Assembling the stand 16
Operation 17
Setting the operating mode 18
Er 5 18
Setting the safety temperature limit 19
Setting the temperature control mode 19
Maintenance 20
Accessories 20
Error codes 21
Technical data 22
Warranty 23
We declare under our sole responsibility that this product is in compli-
ance with the regulations 2014/35/EU, 2014/30/EU and 2011/65/EU and
conforms to the standards or standardized documents EN 61010-1, EN
61010-2-010, EN 61010-2-051 and EN 61326-1.
For your protection
• Read the operating instructions in full before starting up and follow the
safety instructions.
• Keep the operating instructions in a place where they can be accessed by
everyone.
• Ensure that only trained staff work with the appliance.
• Follow the safety instructions, guidelines, occupational health and safety
and accident prevention regulations.
• Socket must be earthed (protective ground contact).
• Caution - Magnetism! Effects of the magnetic field have to be taken into
account (e.g. data storage media, cardiac pacemakers ...).
• Risk of burns! Exercise caution when touching the housing parts and the
heating plate. The heating plate can reach temperatures in excess of 340
°C. Pay attention to the residual heat after switching off.
• Ensure that the mains power supply cable does not touch the heating base
plate.
• Wear your personal protective equipment in accordance with the hazard
category of the media to be processed. Otherwise there is a risk from:
- splashing and evaporation of liquids
- ejection of parts
- release of toxic or combustible gases.
• Set up the appliance in a spacious area on an even, stable, clean, nonslip,
dry and fireproof surface.
• The feet of the appliance must be clean and undamaged.
• Check the appliance and accessories beforehand for damage each time you
use them. Do not use damaged components.
• Gradually increase the speed.
• Reduce the speed if
- the medium splashes out of the vessel because the speed is too high
- the appliance is not running smoothly
- the container moves on the base plate.
• Caution! Only process and heat up any media that has a flash point higher
than the adjusted safe temperature limit that has been set (50 to 360 °C).
EN

15
The safe temperature limit must always be set to at least 25 °C lower than the
fire point of the media used.
•Beware of hazards due to:
- flammable materials
- combustible media with a low boiling temperature
- glass breakage
- incorrect container size
- overfilling of media
- unsafe condition of container.
•The appliance may heat up when in use.
• The base plate can heat up due to the action of the drive magnets at high
motor speeds, even if the heater is not operational.
• Process pathogenic materials only in closed vessels under a suitable extractor
hood. Please contact
IKA
®if you have any questions.
• Do not operate the appliance in explosive atmospheres, with hazardous subs-
tances or under water.
• Only process media that will not react dangerously to the extra energy pro-
duced through processing. This also applies to any extra energy produced in
other ways, e.g. through light irradiation.
• Please observe the operating instructions for any accessories used.
• Ensure that the external temperature sensor (PT 1000, ETS-D ...) is inserted in
the media to a depth of at least 20 mm.
• The PT 1000 external temperature sensor must always be inserted in the media
when connected.
• Safe operation is only guaranteed with the accessories described in the
”Accessories” chapter.
• Accessories must be securely attached to the device and cannot come off by
themselves. The centre of gravity of the assembly must lie within the surface
on which it is set up.
• Always disconnect the plug before fitting accessories.
• The appliance can only be disconnected from the mains supply by pulling out
the mains plug or the connector plug.
• The socket for the mains cord must be easily accessible.
• The device will automatically restart in mode B following any interruption to
the power supply.
• It may be possible for wear debris from rotating accessory parts to reach the
material being processed.
• When using PTFE-coated magnetic bars, the following has to be noted:
Chemical reactions of PTFE occur in contact with molten or solute alkali metals
and alkaline earth metals, as well as with fine powders of metals in groups
2 and 3 of the periodic system at temperatures above 300 °C - 400 °C. Only
elementary fluorine, chlorotrifluoride and alkali metals attack it; halogenated
hydrocarbons have a reversible swelling effect.
(Source: Römpps Chemie-Lexikon and ”Ulmann”, Volume 19)
For protection of the equipment
• The appliance may only be opened by experts.
• The voltage stated on the type plate must correspond to the mains voltage.
•Do not cover the device, even partially e.g. with metallic plates or film. This
results in overheating.
• Ensure that the base plate is kept clean.
• Protect the appliance and accessories from bumps and impacts.
•Observe the minimum distances between the devices, between the device and
the wall and above the assembly (min. 800 mm).

16
Assembling the stand
Note: When using bath attachments with a
diameter over 180 mm, please use support
rod in conjunction with an extension. (See
“Accessories”)
)Remove screw plugs (M)
)Remove the protective cap from the support rod
)Put the washer between housing and nut
)Screw the support rod onto the device
by hand until the end stop is reached
)Use an A/f 17 spanner to tighten the
M10 nut
)Accessories should be attached using
cross sleeves
Risk of tipping!
Make sure that the center of mass of the at-
tached device does not protrude over the safe
area indicated with a dashed rectangle.
safe area
• Unpacking
- Please unpack the device carefully
- In the case of any damage a detailed report must be set immediately
(post, rail or forwarder)
• Contents of package
- Heating magnetic stirrer
- Mains cable
- Operating instructions
- Screwdriver
- Temperature sensor PT 1000
- Protection cover
• Use
- For mixing and/or heating liquids
• Range of use
- Laboratories - Schools
- Pharmacies - Universities
This device is suitable for use in all areas except industrial areas.
The safety of the user cannot be guaranteed if the appliance is operated with acces-
sories that are not supplied or recommended by the manufacturer or if the appliance
is operated improperly contrary to the manufacturer’s specifications or if the appliance
or the printed circuit board are modified by third parties.
Unpacking
Correct use

17
Commissioning
Stirring
Heating
Connecting
external
thermometers
(direct tempe-
rature
control in
the media)
)Move device switch (A) to the OFF position
)Insert the mains power cable into the power socket (K)
)Move device switch (A) to the ON position
¾Operating mode A is preset (see “Operating modes”)
Operation
)Adjust the motor speed using the rotary knob (D)
¾The value selected will be shown on the display (F)
)Set the start point for the agitation function by pressing the rotary knob (D)
¾The displayed value will flash until the desired motor speed is reached
i
Ensure that the protective film is removed from the base plate before use!
) Set the safe temperature limit (see “Setting the safe temperature limit for RET”)
) Adjust the set-point temperature using the rotary knob (C)
¾The value selected will be shown on the display (E)
) Set the temperature control mode (see “Setting the temperature control mode for RET”)
)Set the start point for the heating function by pressing the rotary knob (C)
The set-point and actual temperatures will be shown alternately on the display (E)
¾When the heating is switched on, the LED “Heating plate” (G) and the LED “Set-point value” (I) will be lit.
¾During agitation and standby operation, the display (E) will show H O t if the base plate temperature is above 50 °C.
)Move device switch (A) to the OFF position
)Detach contact plug (L)
)Attach a DIN 12878 (Class 2) compliant safety contact thermometer or a PT 1000 temperature sensor to the socket (L)
)Move device switch (A) to the ON position
Temperature sensor PT 1000 ¾
 The actual temperature for the temperature sensor shown on display (E) will correspond to the temperature of the media.
The LED “external temperature sensor” (H) will be lit
Contact thermometer e.g. ETS-D5 ¾BFollow the operating instructions for the contact thermometer
The LED “decimal point for the temperature display” (J) will be lit
When a contact thermometer is connected, the display (E) will only show the set-point temperature that has been set
i
i
i
i

18
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
display when the device is started up.
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)
D The set value is indicated on the display (F)
xx A
Note: Mode D is available from software version 40
xx A
(xx: software version) mode
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: 0 min
The time selected will be shown on the display when the device is started
up if the sensor is connected.
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.
t5 5“
Er 5 setting time limit
Er 5

19
Setting the safe temperature limit
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
Setting temperature control mode
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

20
The device is maintenance-free.
Cleaning
For cleaning disconnect the main plug.
Only use cleansing agents which have been recommended by IKA®.
Use to remove:
Dyes isopropyl alcohol
Construction materials isopropyl alcohol/water containing surfactant
Cosmetics isopropyl alcohol/water containing surfactant
Foodstuffs water containing surfactant
Fuels water containing surfactant
- Do not allow moisture to get into the appliance when cleaning.
- Wear protective gloves when cleaning the devices.
- Please consult with
IKA
®before using any cleaning or deconta-mination
methods, other than those recommended here.
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.
Repair
Please send instrument in for repair only after it has been cleaned and is free
from any materials which may constitute a health hazard.
For this you should request the “Decontamination Clearance 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 suf-
ficient. Also, please use suitable shipping package materials.
Accessories
Maintenance
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 when the two-point controller is activated.
When the heating function is active in 2P mode, (with external PT 1000 tempera-
ture sensor) the actual temperature flashes - that notifies the user that the process
temperature has been greatly overshot!
• Stirring bars: ø 6 mm, length upto 15 mm
ø 7 mm, length upto 60 mm
ø 10 mm, length upto 80 mm
• RS 1 Set of magnetic stirring bars
• RSE Stirring bar remover
• H 16 V Support rod
• H 16.3 Extension
• H 38 Holding rod
• H 44 Cross sleeve
• ETS-D5 Contact thermometer
• ETS-D6 Contact thermometer
for further accessories see www.ika.com

21
Error codes
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.
Any malfunctions during operation will be identified by an error
message on the display (E and F).
Proceed as follows in such cases:
)Switch off device using the main switch (A)
)Carry out corrective measures
)Restart device
E rror code Cause Effect Solution
E3 Temperature inside device too high Heating off - Switch off device and allow to cool down
E4 Motor blockage Heating off
Motor off
- 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
E5 No temperature increase in sensor at
continuous temperature difference
Heating 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
E6 Break in safety circuit Heating off - Plug in contact plug (L)
- Plug in PT 1000 contact thermometer / temperature sensor
- Replace faulty connecting cable, plug, or contact thermometer
E24 Surface temperature (temperature of
control sensor):
of the base plate is higher than the set
safe temperature limit
Heating off - Switch off device until the surface temperature of the base
plate is lower than the
selected safe temperature limit
- Set a higher safe temperature limit
E44 Surface temperature (temperature of
safety sensor):
of the base plate is higher than the set
safe temperature limit
Heating off - Switch off device until the surface temperature of the base plate is lower than the
selected safe temperature limit
- Set a higher safe temperature limit
E25 Heating and switching element monitoring Heating off - Switch off device
- 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
E26 Difference between temperature of safety
sensor and temperature of control sensor
control temperature > (safety tempera-
ture + 40 K)
Heating off - 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
temperature sensor
E46 Difference between temperature of safety
sensor and temperature of control sensor
safety temperature > (control tempera-
ture + 40 K)
Heating off - 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
temperature sensor

22
Technical Data
Number of stirring positions 1
Stirring quantity max. per stirring position (H
2
O) 20
Motor rating output W9
Direction of rotation right
Speed display set-value LED
Speed display actual-value LED
Speed control Turning knob
Speed range rpm 50 - 1700
Setting accuracy speed rpm 1
Stirring bar length mm 20 - 80
Self-heating of the hotplate by
max. stirring
(RT:22°C/duration:1h)
K15
Heat output W600
Temperature display set-value LED
Temperature display actual-value LED
Temperature unit °C
Heating temperature °C (Room temp.
+ device self
heating) - 340
Heat control Turning knob
Temperature setting range °C 0 - 340
Heating rate heating plate K/min 7
Temperature setting resolution of heating plate K1
Connection for ext. temperature sensor PT 1000
Temperature setting resolution of medium K1
Adjustable safety circuit °C 50 - 360
Set-up plate material stainless steel
1.4301
Set-up plate dimensions mm Ø 135
Automatic reverse rotation no
Intermittent mode no
Viscosity trend measurement no
Break detection stirring bar no
Timer no
pH measurement no
Graph function no
Programs no
Sensor in medium detection (Error 5) yes
Weighing function no
Dimensions (W x H x D) mm 160 x 95 x 270
Weight kg 2.5
Permissible ambient temperature °C 5 - 40
Permissible relative humidity %80
Protection class according to DIN
EN 60529
IP 42
RS 232 interface no

23
The warranty does not cover worn out parts, nor does it apply to faults resulting
from improper use, insufficient care or maintenance not carried out in accordan-
ce with the instructions in this operating manual.
In accordance with IKA
®warranty conditions, the warranty period is 24 months.
For claims under the warranty please contact your local dealer. You may also
send the machine direct to our factory, enclosing the delivery invoice and giving
reasons for the claim. You will be liable for freight costs.
Warranty
USB interface no
Analog output no
Voltage V220 - 230
Frequency Hz 50/60
Power input W630
Subject to technical changes!