20
4111-0004 — Apr. 2021
© 2021 Systems, LLC
INSTALLATION
Install Control Panel and Wiring
DO NOT connect any dock equipment electrical
wiring or ground connections until all welding has
been completed.
DO NOT ground welding equipment to any electrical
components of the dock equipment. Always ground
welding equipment to the dock leveler frame, NEVER
to the platform.
Failure to follow these instructions may damage the
motor, wiring, and/or control panel.
Make sure that the power source has been locked
out and tagged according to OSHA regulations and
approved local electrical codes.
All electrical work — including the installation of the
disconnect panel, control panel, and final connections
to the pit junction box — must be performed by a
certified electrician and conform to all local and
applicable national codes.
1. Mount the control panel (
B
) so bottom of control
panel-to-dock floor distance is 48 in. (1219 mm,
C
).
2. Install electrical disconnect panel (
A
) if not already
installed (provided by others). It is recommended to
locate disconnect panel adjacent to control panel (
B
).
3. Install and connect the control wiring as shown in
installation drawings.
4. Connect the control wiring to the field wires in the
dock equipment junction boxes. Refer to the electrical
diagrams supplied with the dock equipment.
Note:
When installing electrical controls in a
temperature-controlled environment, the installer
must determine an appropriate means to isolate/
prevent thermal and vapor transfer through electrical
conduit where conduit routing crosses temperature
zones. Systems, LLC is not responsible for any
damage due to moisture collecting inside the control
panel caused by improper isolation/prevention of
thermal and vapor transfer through the conduit. Refer
to Tech Service Bulletin 19-053 for more information.
5. Install placard (
D
). Make sure placard is in
plain view of dock leveler and/or vehicle restraint
operations. Suggested placement of placard is near
control box attached to electrical conduit by using
nylon cable tie. See page 21.
A— Disconnect Panel
(provided by others)
B— Control Panel
C— Distance, 48 in. (1219 mm)
D— Placard
A hard hat or other applicable head protection
should always be worn when working under or
around a dock leveler.
Always stand clear of platform lip when working in
front of the dock leveler.
Where indicated, all components must be connected
to a SAFETY EARTH GROUND that conforms to
the 1999 National Electrical Code Section 250-50
section (a) or section (c) for a grounding electrode
system.
A
D
B
C
Figure 14
