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Preparation Before Operation 3
DG711 and DG511 Pipe Laser User Guide 17
While using the optional external
power cable and 12-V DC battery
to power the pipe laser, you can
remove the internal batteries and
the pipe laser will continue to
operate. The battery pack however
has to be in place in order to cover
the contacts.
Connecting/Disconnecting
the external power cable
C
Warning – To avoid
damaging the pipe laser
and to prevent the
possibility of creating a
spark at the battery, make
sure the pipe laser is off
before connecting/
disconnecting the external
power cable to/from the
pipe laser.
C
Warning – Do not
connect the pipe laser to a
power generator where
over-voltage can occur. Do
not start the vehicle while
the pipe laser is
connected to the external
battery.
C
Warning – An electrical
shock risk may occur if
you connecting/
disconnecting the power
plug or power cable from
the pipe laser with wet
hands. Make sure your
hands are dry when
performing this task.
1 Turn the external-power-
receptacle cap counterclockwise
enough to remove it from the
external power receptacle.
Removing the cap exposes the
receptacle.
2 Connect the alligator clips to a
12-V dc automotive or motorcycle
battery noting the correct polarity
(red = positive, black = negative).
3 Insert the plug into the
receptacle on the laser.
4 To disconnect the external
power cable from the pipe laser,
remove the plug from the pipe laser
first and then remove the alligator
clips from the battery.