Alexika HB 10: Correct use

12

• 

Application

Tempering the media in the bath container.

Use with the RV 10 and RV 8 series of rotary evaporators.

.

Do not use the device to prepare food!!

Correct use

• 

Range of use

- Laboratories 

 - Schools

- Pharmacies 

- Universities

The safety of the user cannot be guaranteed if the appliance is 

operated with accessories that are not supplied or recommended 

by the manufacturer or if the appliance is operated improperly 

contrary to the manufacturer’s specifi cations or if the appliance 

or the printed circuit board are modifi ed by third parties.

Commissoning

Prior to commissioning the device, determine the fi lling quantity 

of the tempering medium due to the used evaporator piston size 

(approx. 2,5 l tempering medium by using a standard 1 l evapo-

rator piston).

Set target temperature



 Activate the SET function and confi rm the previously set target 

temperature by pressing the rotary/push knob (C).



  The opening screen fi g. 6 appears and the setting for the sa-

fety temperature is activated for fi ve seconds. "SafeTemp" fl a-

shes on the display, see also "Setting the safety temperature".



  The display then switches from "SafeTemp" to "Temp" and 

the SET function is activated.



 Set the desired heating bath target temperature by turning 

the rotary/push knob (C), see fi g. 8.



 The SET function fl ashes every few seconds.



 Confi rm the value by pressing the rotary/push knob again (C). 

If not confi rmed, the set value is not saved.



 The SET function stops fl ashing.



 Start the heating process by pressing the rotary/push knob (C).

Operating modes

Operating mode A



 Switch on the device at the rocker switch (B).



 The heating function is switched off.



 Safe Temp (safety temperature) will appear for 5 secs (fi g. 3).



 The target value is set to 20 °C.



 The target value setting can be adjusted.



 The controller tempering medium is set to water.



  The heating function must be restarted following a power 

failure.



 The following settings are possible/adjustable:

- the target value,

- the safety circuit,

- the controller tempering medium.



 When the device is switched on at the mains switch, A ap-

pears  (fi g. 10).

Factory setting: Mode A

Operating elements, see fi g. 11



 Switch on the device using the main switch (B), see fi g. 1.



 At every start the used software version and the set operating 

mode are indicated, see fi g. 10.



 The heating bath temperature is held constant by the control 

circuit and is additionally monitored by the safety circuit.

   In the event of an error in the control circuit, the heating bath 

is switched off permanently by the safety circuit.

   An error in the control or safety circuit is shown on the display, 

LC display see fi g. 5.

  The 'Heating' function can no longer be started.



 When switching off the heating function and the medium 

temperature is higher than 50° C, on the LC display is shown 

alternately OFF and HOT, see fi g. 4 and 6.

C

D

Fig. 11

The unit is ready for service when 

the mains plug has been plugged 

in.

Unpacking

• 

Unpacking

- Please unpack the device carefully

  - In the case of any damage a fact report must be set imme-

     diately (post, rail or forwarder)

• Delivery scope

Heating bath IKA

®

 HB 10

- Heating bath

- Mains cable

- Operating instructions

13

When the safety circuit is set, an upper temperature limit bet-

ween 50 and 190° C is defi ned.

1. Silicone oils as tempering media

When increased safety is not necessary the temperature of the 

safety circuit stays at 190 °C.

Temperature of the tempering medium rises to a maximum of 

190 °C in the case of error. Then the  safety circuit switches 

the heating bath permanently off.

2. Demineralised water as the tempering medium

When increased safety is not necessary, the adjustment knob 

of safety circuit stays all the way to the right. As long as there 

is any demineralised water in the heating bath, the tempera-

ture of the tempering medium rises to a maximum of 100 °C 

in the case of error. If the water is evaporated completely, the 

temperature of the tempering medium rises to a maximum of 

190 °C. Then the safety circuit switches off the heating bath 

permanently.

3. Temperature-sensitive or easily fl ammable media in the 

rotary evaporator

When the pre-set bath temperature may not be exceeded 

under any circumstances set the safety circuit as described 

below.

Adjusting the safety circuit



 Set the desired safety temperature by turning knob (C) within 

5 seconds of the mask (fi g. 3) appearing on the LC display.

Checking the safety circuit

The safety circuit has to be checked by the user once a year.



 Fill the heating bath with 1 litre of water as tempering me-

dium.



 Set the safety temperature to 100° C.



 Set the target temperature to 80° C.



 Start the 'Heating' function with the ON/OFF key (B).



 When the target temperature is reached, turn the heating 

bath off and on again at the main switch.



 Set the safety temperature to 70° C.



 The medium temperature is thus 10 K above the safety tem-

perature, the safety circuit trips, the LC display shows E 24, 

see fi g. 5.

Control of the medium temperature

The medium temperature is limited by the set safety tempera-

ture. The medium temperature is controlled by means of a PID 

controller. The medium temperature is measured by the PT 1000 

temperature sensor and is heated up as quickly as possible wit-

hout overshooting to the set temperature.

The PID controller adapts to the different tempering media and 

ensures optimum temperature control with minimum tempera-

ture drift and fl uctuation.

Optimum control is only achieved when the medium is mixed 

using a rotating evaporator piston.



 Set the desired medium temperature between room tempe-

rature  and  180°  C  by  turning  knob  (C).  The  max.  medium 

temperature setting is the safety temperature minus 10 °C.



 LCD display, see fi g. 7

Operating mode B



 Switch on the device at the rocker switch (B).



 The heating function is switched off.



 Safe Temp (safety temperature) will appear for 5 secs (fi g. 3).



 The target value is set to 20 °C or the most recent tempera-

ture setting.



 The controller tempering medium is set to water or the most 

recent medium setting.



 The heating function must be restarted following a power 

failure.



 The following settings are possible/adjustable:

- the target value setting,

- the controller tempering medium.



 The safety circuit is set to the most recently set value and 

cannot be adjusted.



 When the device is switched on at the mains switch, B ap-

pears.

Operating mode C



 Switch on the device at the rocker switch (B).



 The heating function is switched on or off depending on the 

last selected setting.



 Safe Temp (safety temperature) will appear for 5 secs (fi g. 3).



 The last target value set in mode B applies.



 The setting controller tempering medium set before the de-

vice was last switched off in mode B applies.



 The following settings cannot be adjusted:

- the target value,

- the safety circuit,

- the controller tempering medium.



 When the device is switched on at the mains switch, C ap-

pears.

Switching operating modes



 Switch the device off at the mains switch.



 Press and hold knob (C) and switch the device on at the mains 

switch. Release the knob (C) after approx. 2 seconds.



 Sequence A, B, C, A etc.



 The operating mode setting appears on the display when st-

arting up the device (see fi g. 10).

.

Safety circuit

The adjustable safety circuit prevents the temperature of the 

heating bath from getting too high as a result of:

- a controller error

- the "Temperature" rotating knob having been accidentally turned.



 Once the safety temperature has been reached, the device 

switches off permanently.

Furthermore, dry running of the heating bath is detected.



 The device switches off permanently.

The dry running function detects both accidental heating of the 

heating bath without liquid and dry running caused by water 

evaporation starting at a target temperature of 60 °C. The er-

ror message E 26 appears and the heating bath is switched off 

permanently. To remedy this error, see the section entitled "Error 

message".