Error Messages; Cleaning And Maintenance - Velleman DEM701 Bedienungsanleitung

4. Press the distance button and measure the height.
5. The meter automatically calculates the volume. The value appears on
the LCD display.
6. Press the area/volume button to exit the mode.

8. Error Messages

symbol

9. Cleaning and Maintenance

 The laser is the most delicate part of the device and it shall be kept
clean at all times. To do this, only use a soft cloth or cotton bud with a
little water or medical alcohol.
 Allow the lens to fully dry before using the device.
 Wipe the other parts of the device regularly with a moist, lint-free cloth.
Do not use alcohol or solvents.
 Do not submerge the device in water or any other liquid.
 There are no user-serviceable parts. Contact your dealer for spare parts
if necessary.
 The device shall be stored between –20° C and +65° C (–4° F to
+149° F).
V. 01 – 19/07/2016
cause
signal too weak or too
strong
light surrounding
measuring point too
strong
working temperature
out of range
hardware failure
DEM701
possible solution
re-measure the distance
choose a measuring point with
weaker surrounding light
carry out measurements when
the ambient temperature
between 0° C and 40° C
switch device off and on again;
contact your local dealer if
problem persists
6 ©Velleman nv