1002 - 1013 Wasserbäder
Water Baths
8. Error Display
8.1. The temperature regulator disposes of electronic monitoring with error screening and
concurrent over-temperature cut-out.
The Temperature Sensor of the regulator is constantly being screened for short circuits. In
case of fault, display will show: "E1L" for a short circuit in the Temperature Sensor or "E1H"
for interruptions. The microprocessor controlled temperature regulator will switch off the
heating circuit.
After elimination of error, unit can be restarted.
The unit also disposes of an electronic over-temperature cut-out for the protection of test
substances, dependent on the set temperature. This device will switch off heating when the
set temperature is exceeded by 4°C. The electronic monitoring will induce the information
"E2H" to be shown on the display.
To restart heating, the unit must be switched off and then on again at the main switch.
Should the information "E2H" remain, error must be attended by a competent electrician.
8.2. The Water Bath's heating element is protected against destruction by running dry by a
low water cut-off (thermostatical over-temperature cut-out). In case of water shortage,
power is cut. A nearly unvarying, realistic actual temperature is shown on the display of the
temperature regulator, and the pilot lamps on the right side of the display and in the main
switch will glow. Before restarting the unit, please fill bath with water - as described in article
4 - and unlock low water cut-off. The unlocking device is situated at the back of the unit,
below a black cap nut. Within the screw connection, you will see a white plastic pin, which
has to be gently pressed (eg with a pen) until a clicking noise can be heard.
9. Water Circulation (models 1012 and 1013 only)
The integrated water circulation system ensures optimum temperature distribution within the
whole basin. It is operated by an electric motor with stirring magnet flanged to the bath basin.
Its torque is transmitted to a teflon coated stirrer, which draws water from the middle of the
basin and then pushes the water back to all sides. The circulation motor is activated via the
main switch.
10. Servicing and Maintenance
GFL Water Baths are produced with first class materials and are made to withstand even
rough service conditions. Nevertheless, the units should only be subjected to rough
conditions within sensible limits.
For technical support concerning GFL Water Baths,
please do not hesitate to contact our technical staff.
Before returning a defective unit, please contact your dealer or us.
Please do not return the unit before consulting us.
If we agree to the unit beinig returned, arrange for careful packing and send the unit to
GFL Gesellschaft für Labortechnik mbH
Schulze-Delitzsch-Strasse 4
D-30938 Burgwedel
Federal Republic of Germany
Seite 12 Rev.03
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