Owner's manual
13
4111-0035 — Feb 2012
Aug 2012
INSTALLATION
Post safety warnings and barricade the work 
area at dock level and ground level to prevent 
unauthorized use of the dock leveler before 
installation has been completed.
Failure to follow the installation instructions can 
result in damage to dock leveler, the facilities, 
and/or serious personal injury or death.
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.
13
IMPORTANT
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.
If the incoming electrical power for the TPR vehicle 
restraint is taken from a nearby electrical appliance, 
e.g., overhead door opener, verify that the amperage is 
in accordance with local and federal codes.
The TPR vehicle restraint 1/10 HP motor requires 
120V, single phase power, 60 Hz power and 10 amps 
of current to operate properly.
Two (2) TPR vehicle restraints can be connected into 
one (1) 20 amp branch circuit breaker per the 1999 
National Electrical Code Paragraph 430-53.
If you have questions, contact Systems Inc Technical 
Support at (800) 643-5424.
Make sure that the power source has been locked 
out and tagged according to OSHA regulations and 
approved local electrical codes.
DANGER 
!
The TPR vehicle restraint assembly includes a 63" long 
flexible wiring harness, the control box with lights and 
the outside signal light box. The outside junction box, 
conduit fittings and wire are provided by others; be sure 
to use a qualified installer utilizing quality materials. 
Refer to component location information. Electrical 
schematics for wiring information can be found inside 
the control box.
CONTROL BOX INSTALLATION GUIDELINES - 
TEMPERATURE CONTROLLED APPLICATIONS
Route the conduit to enter through the side or bottom 
of the enclosure. If the conduit could fill with water, a 
drip leg may be needed.
Seal the conduit in any location where the conduit 
crosses over temperature zones that could produce 
condensation.
Install spacers between the wall and enclosure to 
provide temperature insulation and air flow.










