DLM HED Series, Owner & User Manual

Page: 13 / 48

11
Manual No. 4111-0027
Sept. 2009
May 2012
11
INSTALLATION
IMPORTANT
DO NOT connect the dock leveler electrical wiring
and ground connections until all welding has been
completed.
DO NOT ground welding equipment to any hydraulic
or electrical components of the dock leveler. Always
ground welding equipment to the dock leveler frame,
NEVER to the platform.
Failure to follow these instructions may damage the
motor, hoist cylinder, wiring, and/or control panel.
IMPORTANT
DO NOT weld continuously along the full length of
the base plate. This can put unnecessary stress
on the leveler components, causing the leveler to
malfunction and shorten the lifespan of the affected
components.
If the platform is raised using an external lifting device
or the hydraulic system is opened to atmosphere, air
will enter into the hydraulic system.
Whenever this happens, always cycle the leveler
at least 4 times using the leveler’s own hydraulic
power system before allowing the leveler to be put
into service. This is to make sure all air is purged
from the hydraulic cylinders. Failure to do this may
result in serious personal injury or death.
Two people are required to engage the maintenance
prop: one person to operate the lifting device, the
other person to engage the maintenance prop.