MB95 EN-49
Problem: Display remains dark after switching ON.
Probable causes:
— No line voltage
— Power cable not connected
— Power line fuse blown
— Instrument faulty
Problem: The measurement takes too long.
Probable cause:
— You have selected an unsuitable switch-off criterion. Try
experimentation to arrive at a suitable switch-off criterion.
Problem: The instrument does not heat following the start up.
Probable cause:
— The dryer is overheated and the thermal overload protection has
responded. For safe operation, the instrument is equipped with a
duplicate overheating protection device: The dryer unit has a
thermal overload protection device which switches off the heating
element. Contact your OHAUS dealer.
Problem: The measurements are not repeatable.
Probable causes:
— The samples are not homogeneous, i.e. they have different
compositions. The more inhomogeneous a sample, the larger the
amount of sample needed to obtain a repeatable result.
— You have selected a drying time that is too short. Extend the drying time
or select a suitable switch-
off criterion “Weight loss per unit of time”.
— The sample does not come completely dry (e.g. owing to skin formation).
Dry the sample on quartz sand.
— You have selected a temperature that is too high and the sample has
oxidized. Lower the drying temperature.
— The sample boils and the splashed drops continuously change the
weight. Lower the drying temperature.
— Insufficient heating power as the protective glass is dirty. Clean the
protective glass.
— The temperature sensor is contaminated or faulty. Clean the
temperature sensor.
— The support on which the instrument is standing is not stable. Use a
stable support.
— The surroundings are very unstable (vibrations etc.).
11.4 Error detection
The Moisture Analyzer utilizes an audio tone to indicate an error. A
normal
button press or
entry results in a short, high pitched tone. When an entry is incorrect or an improper button is
pressed, a low pitched tone is emitted. There are no system error codes shown on the
displays under these conditions.
