Design; Malfunctions - Optimum BF20 L Vario Operating Manual

Operation
4.10.2

Design

Value decrease
Fig.4-8: Digital display
ON / O,
switches the display on and resets the reading of the display to "0".
mm/in,
converts the measuring unit from millimetres to inches and vice versa.
OFF,
switches the display off.
performs a value increase.
performs a value decrease.
INFORMATION
Before inserting the new battery, wait about 30 seconds. Please make sure, that the contacts
are metallically bright and free from coverings which result from bleeding or gassing batteries.
Grip the new batteries only with plastic forceps, if possible not with the hand due to the forma-
tion of oxide and never with metal forceps in order to avoid a short circuit. In most cases the
round cell will be inserted into the digital display with the marking upside. After inserting the
round cell, the battery compartment has to be closed again.
4.10.3

Malfunctions

Malfunction
Flashing of the dis-
play
Screen doesn't ref-
resh
No data visible
9 / 03 / 2010
LCD display
Shifting
mm/inch
Value increase
,
,
Cause/
possible consequences
• Voltage too low
• Disturbance in the circuit
• No power supply
• Battery voltage less than 3V
Version 3.1.4
Solution
•
•
•
•
BF 20 Vario ; BF 20 L Vario
OPTIMUM
M A S C H I N E N - G E R M A N Y
Off-switch
On-switch
Zeroing
Battery bay
Change battery
Remove the battery, wait 30
seconds and reinsert the battery
Clean battery contacts
Replace battery
Drilling-Milling machine Page 33