IKA HB 4 basic - Manual (Page 13)

The following error messages can be displayed (fig. 17) and have the fol-
lowing causes described:
No. Error Remedy
Er 3 Internal device temperature above 76°C Allow the device to cool down.
Mains switch OFF/ON
Er 4 Motor speed deviates ±300 rpm Reduce load.
from the speed. Set speed greater Mains switch OFF/ON
than 350 rpm
Er 4 Stirring function turned on Mains switch OFF/ON
Actual speed = 0 rpm Increase the speed or turn the
Indication after approx 30 sec stirring function
Er 20 Safety relay does not close Safety circuit is set too low,
check mains voltage (mains
voltage must be larger than
the nominal voltage - 10%).
Mains switch OFF/ON
Er 21 Safety relay does not open RESET key/service
Er 22 Disturbance before the last time the RESET button
device was switched OFF or safety
temperature is lower then the tem-
perature of the medium
Er 23 Adjustable safety circuit faulty Mains switch OFF/ON / service
Er 24 Safety temperature set exceeded Set safety temperature higher.
Mains switch OFF/ON
Er 26 System dry, no medium in the Allow the device to cool down,
bath container then refill with medium.
Mains switch OFF/ON
Er 27 Calibration error Mains switch OFF/ON. When
switching on, a calibration is
automatically carried out.
Er 28 Sensor rupture Mains switch OFF/ON
Er 29 Short circuit in the safety sensor or Service
controller and safety sensor mixed up
Er 30 Short circuit in the controller sensor Service
The safety circuit must be checked over at least once a year by the user.
To do this, fill the temperature contol bath with 1l of water and in opera-
ting mode „A“ set the safety temperature to 100°C. Then set the target
temperature to 80°C and start the heating function by pressing the Temp
ON/OFF key. After the target temperature has been reached, switch the
moderating bath off and back on again with the power switch and set the
safety temperature to 70°C. The temperature of the medium will then be
10°C above the safety temperature, and the safety circuit will be activa-
ted. Error message Er 22 or Er 24 must be displayed.
The aparate is maintenace-free. It is subject only to the natural wear
and tear of components and their statistical failure rate.
When ordering spare parts, please give the manufacturing num-
ber shown on the type plate, the machine type and the name of
the spare part.
Please send in equipment for repair only after it has been cleaned and
is free from any materials which may constitute a health hazard. Use
only cleansing agents which have been approved by IKA to clean IKA
devices. To remove use:
Dyes isopropyl alcohol
Construction materials water containing tenside / isopropyl alcohol
Cosmetics water containing tenside / isopropyl alcohol
Foodstuffs water containing tenside
Fuels water containing tenside
For materials which are not listed, please request information from IKA.
Wear the proper protective gloves during cleaning of the devices.
Electrical devices may not be placed in the cleansing agent for the pur-
pose of cleaning.
Before using another than the recommended method for cleaning or
decontamination, the user must ascertain with the manufacturer that this
method does not destroy the instrument.
13
HB4 0596
Error messages
Maitenance and cleaning
BA_HB4 30.06.2003 10:07 Uhr Seite 13