SYSTEMS McGuire VSH Series User manual

Printed in U.S.A.
©2019 Systems, LLC - All Rights Reserved
Manual No. 4111-0024
Apr. 2020
Owner’s/User’s Manual
VSH Series
Dock Leveler
A Division of Systems, LLC
McGuire • Division of Systems, LLC • W194 N11481 McCormick Drive • Germantown, WI 53022
800.624.8473 • fax: [phone] • www.wbmcguire.com • [email protected]

Table Of Contents
Page
Precautions
Recognize Precautionary Information ................................................ 1
General Operational Precautions........................................................ 1
Operational Precautions ...................................................................... 2
Safety Decals......................................................................................... 4
Placard ................................................................................................... 5
Owner’s/User’s Responsibilities.......................................................... 6
Introduction
General Information.............................................................................. 8
Component Identification..................................................................... 9
Installation
Installation Precautions ...................................................................... 10
Prepare Pit ............................................................................................ 11
Prepare Dock Leveler .......................................................................... 12
Install Dock Leveler ............................................................................. 14
Install Control Panel and Wiring ........................................................ 16
Purging Air From VSHH Hydraulic System & Adjusting Rod Eye.. 18
Put New Dock Leveler Into Service.................................................... 20
Operation
Operational Precautions ..................................................................... 21
Ramp Loading/Unloading ................................................................... 22
Below Dock End Loading/Unloading ................................................. 22
End Loading/Unloading (w/Optional Lip Keepers) ........................... 23
Maintenance
Maintenance Precautions ................................................................... 24
Periodic Maintenance .......................................................................... 26
Checking Reservoir Fluid Level (Remote-Mount Powerpacks) ...... 28
Adjustments
Adjust Main Pressure Relief ............................................................... 29
Adjust Stored Limit Switch & Down Speed Flow Control ............... 30
Adjust Storage Prop ............................................................................ 31
Troubleshooting
Troubleshooting................................................................................... 32
Parts
Stored Limit Switch ............................................................................. 36
Prop Kicker Solenoid & J-Box............................................................ 37
Storage Prop Assembly ...................................................................... 38
Lip and Platform Components ........................................................... 40
Hydraulic Components........................................................................ 42
Valve Blocks......................................................................................... 44
Hoist Cylinder Parts ........................................................................... 48
Lip Cylinder Parts ................................................................................ 49
Remote Mount Powerpack Assembly................................................ 50
Miscellaneous
Customer Information ......................................................................... 53
Warranty................................................................................................ Back Cover

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4111-0024 — Apr. 2020
©2020 Systems, LLC
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Figure 1
Recognize Precautionary Information
PRECAUTIONS
General Operational Precautions
Read and understand the Owner’s/User’s Manual and
become thoroughly familiar with the equipment and
its controls before operating the equipment.
Never operate equipment while a safety device or
guard is removed or disconnected.
Never remove DANGER, WARNING, or CAUTION
signs, Placards or Decals on the equipment unless
replacing them.
Do not start the equipment until all unauthorized
personnel in the area have been warned and have
moved outside the operating zone (Figure 1).
Remove any tools or foreign objects from the
operating zone before starting.
Keep the operating zone free of obstacles that could
cause a person to trip or fall.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to
cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
Safety-Alert Symbol
The Safety-Alert Symbol is a graphic representation
intended to convey a safety message without the
use of words. When you see this symbol, be alert
to the possibility of death or serious injury. Follow
the instructions in the safety message panel.
The use of the word DANGER signifies the
presence of an extreme hazard or unsafe practice
which will most likely result in death or severe
injury.
The use of the word WARNING signifies the
presence of a serious hazard or unsafe practice
which could result in death or serious injury.
The use of the word CAUTION signifies possible
hazard or unsafe practice which could result in
minor or moderate injury.
The use of the word NOTICE indicates information
considered important, but not hazard-related, to
prevent machine or property damage.
Indicates a type of safety sign, or separate panel on
a safety sign, where safety-related instructions or
procedures are described.

24111-0024 — Apr. 2020
©2020 Systems, LLC
PRECAUTIONS
Operational Precautions
Learn the safe way to operate this equipment. Read and understand the
manufacturer’s instructions. If you have any questions, ask your supervisor.
Stay clear of dock leveling device when transport
vehicle is entering or leaving area.
Do not move or use the dock leveling device if
anyone is under or in front of it.
Keep hands and feet clear of pinch points. Avoid
putting any part of your body near moving parts.
Chock/restrain all transport vehicles. Never
remove the wheel chocks or release the
restraining device until loading or unloading is
finished, and transport driver has been given
permission to drive away.
Do not use a broken or damaged dock leveling
device or restraining device. Make sure proper
service and maintenance procedures have been
performed before using.
Make sure lip overlaps onto transport vehicle bed
at least 4 in. (102 mm).
Keep a safe distance from both side edges.

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4111-0024 — Apr. 2020
©2020 Systems, LLC
PRECAUTIONS
Operational Precautions
Do not use dock leveling device if transport vehicle
is too high or too low.
Do not overload the dock leveling device.
Do not operate any equipment while under the
influence of alcohol or drugs.
Do not leave equipment or material unattended on
dock leveling device.

44111-0024 — Apr. 2020
©2020 Systems, LLC
Safety Decals
PRECAUTIONS
2
3
4
5
6
1
1
2
7
8
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1
9
8
PROUDLY
MADEIN USA
SYSTEMS, INC .
GERMANTOWN, WI
MALVERN, AR
9
.
CRUSH HAZARD
Before doing any maintenance, repair or adjustments on the dock
leveler, rst store the leveler in a vertical position with lip extended,
then ensure all maintenance props are in maintenance positions
and properly secured, and then properly secure the storage prop
with the prop lock pin.
DO NOT remove the prop lock pin from the storage prop until you
are sure the hydraulic system is in proper working condition and all
maintenance props are in maintenance positions and properly
secured. After prop lock pin is removed from the storage prop all
maintenance props may be returned to storage positions. DO NOT
stand in front of the dock leveler. Reach from side of the leveler.
DO NOT force the prop lock pin out of the storage prop. If the pin
does not slide freely, support the leveler securely using other means
and determine the cause of the interference.
Failure to follow these instruction will result in death or serious
injury.
Refer to owner’s/user’s manual for proper procedure.
1751-0130 Rev D
.
CRUSH HAZARD
Before doing any maintenance, repair or adjustments on the dock
leveler, rst store the leveler in a vertical position with lip extended,
then ensure all maintenance props are in maintenance positions
and properly secured, and then properly secure the storage prop
with the prop lock pin.
DO NOT remove the prop lock pin from the storage prop until you
are sure the hydraulic system is in proper working condition and all
maintenance props are in maintenance positions and properly
secured. After prop lock pin is removed from the storage prop all
maintenance props may be returned to storage positions. DO NOT
stand in front of the dock leveler. Reach from side of the leveler.
DO NOT force the prop lock pin out of the storage prop. If the pin
does not slide freely, support the leveler securely using other means
and determine the cause of the interference.
Failure to follow these instruction will result in death or serious
injury.
Refer to owner’s/user’s manual for proper procedure.
1751-0130 Rev D
4
6
CRUSH HAZARD
DO NOT REMOVE hydraulic cylinder until leveler is
safely supported by maintenance prop. Refer to
owner’s/user’s manual for proper maintenance
procedure. Failure to comply will result in death or
serious injury. 1751-0138 Rev B
5
ATTENTION INSTALLER:
Replace rear plug with
breather cap
Do not overfill
Oil should fill ½ site glass
Use ULTRA VIS HVI 15 or
MIL SPEC 5606
Questions Call: 800.643.5424
1751-0490 Rev B
Serial Tag
Left
Outside
Beam
Right
Outside
Beam
Decal 2 with have two positions, one on the left outside beam as shown and one on the right outside beam in the same position
Decal 8 will have two positions, one on the left outside beam as shown and one on the right outside beam in the same position
Decal 10 with have two positions, one on the left outside beam as shown and one on the right outside beam in the same position
Decal 3 will be positioned on the upper most corner of the right outside beam (mirror position of decal 7)
CRUSH HAZARD
DO NOT WALK IN
FRONT OF DOCK
LEVELER until you:
Restore the dock
leveler to its safe
stored vertical
position with lip
extended.
Unsupported dock
levelers can lower
unexpectedly.
Before allowing
vehicle to leave the
dock always:
Ensure that no equipment material or
people are on dock leveler.
Restore dock leveler to its safe stored vertical
position with lip extended.
OPERATION
1. Read and follow all instructions and warnings in the
owner’s/user’s manual.
2. Use of dock leveler restricted to authorized personnel.
3. Always chock transport vehicle wheels or engage vehicle
restraint before operating dock leveler or beginning to
load or unload.
4. Never use hands or equipment to move the ramp or lip.
5. Before activating dock leveler:
 Ensure transport vehicle is backed in against bumpers.
 Remove any end loads if required.
 Check transport vehicle alignment to avoid lip
interference. If lip does not lower to transport vehicle
bed, reposition transport vehicle.
6. Ensure that transport vehicle bed supports extended lip
or the leveler frame supports the ramp before driving on
ramp.
7. Stay clear of hinges and front and sides of moving dock
leveler.
8. Never use damaged or malfunctioning dock leveler.
Report problems immediately to supervisor.
MAINTENANCE/SERVICE
1. Read and follow all instructions, warnings and
maintenance schedules in the owner’s/user’s manual.
2. Maintenance/service of dock leveler restricted to
authorized personnel.
3. Place barriers on the driveway and on dock oor to
indicate service work is being performed.
4. DO NOT SERVICE LEVELER unless dock leveler is securely
supported by all prop.
a. First, ensure all maintenance props are in maintenance
positions and properly secured.
b. Then engage prop lock pin in storage prop.
5. Turn o power and use OSHA lockout/tagout procedures.
Failure to follow posted instructions
will result in death or serious injury.
Call 1.800.643.5424 for replacement placards, warning labels, or owner’s/user’smanuals
1751-0807 Rev C
SAFETY INFORMATION
CRUSH HAZARD
DO NOT WALK IN
FRONT OF DOCK
LEVELER until you:
Restore the dock
leveler to its safe
stored vertical
position with lip
extended.
Unsupported dock
levelers can lower
unexpectedly.
Before allowing
vehicle to leave the
dock always:
Ensure that no equipment material or
people are on dock leveler.
Restore dock leveler to its safe stored vertical
position with lip extended.
OPERATION
1. Read and follow all instructions and warnings in the
owner’s/user’s manual.
2. Use of dock leveler restricted to authorized personnel.
3. Always chock transport vehicle wheels or engage vehicle
restraint before operating dock leveler or beginning to
load or unload.
4. Never use hands or equipment to move the ramp or lip.
5. Before activating dock leveler:
 Ensure transport vehicle is backed in against bumpers.
 Remove any end loads if required.
 Check transport vehicle alignment to avoid lip
interference. If lip does not lower to transport vehicle
bed, reposition transport vehicle.
6. Ensure that transport vehicle bed supports extended lip
or the leveler frame supports the ramp before driving on
ramp.
7. Stay clear of hinges and front and sides of moving dock
leveler.
8. Never use damaged or malfunctioning dock leveler.
Report problems immediately to supervisor.
MAINTENANCE/SERVICE
1. Read and follow all instructions, warnings and
maintenance schedules in the owner’s/user’s manual.
2. Maintenance/service of dock leveler restricted to
authorized personnel.
3. Place barriers on the driveway and on dock oor to
indicate service work is being performed.
4. DO NOT SERVICE LEVELER unless dock leveler is securely
supported by all prop.
a. First, ensure all maintenance props are in maintenance
positions and properly secured.
b. Then engage prop lock pin in storage prop.
5. Turn o power and use OSHA lockout/tagout procedures.
Failure to follow posted instructions
will result in death or serious injury.
Call 1.800.643.5424 for replacement placards, warning labels, or owner’s/user’smanuals
1751-0807 Rev C
SAFETY INFORMATION
10
10
8
8
1
2
PROP IS FOR MAINTENANCE USE ONLY.
Operate leveler ONLY when maintenance prop is in the
stored position with the top of the maintenance prop
raised to the line indicated below, and bolt is fully
threaded in the upper hole.
1751-1287
PROP IS FOR MAINTENANCE USE ONLY.
Operate leveler ONLY when maintenance prop is in the
stored position with the top of the maintenance prop
raised to the line indicated below, and bolt is fully
threaded in the upper hole.
1751-1287
10
FIG.“A ”
CRUSH HAZARD
DO NOT WORK UNDER OR IN FRONT OF
DOCK LEVELER unless ALL props have been
properly positioned and secured. First, back out
bolt to position side maintenance prop(s) as shown
in figure “A” below. Then position storage prop and
secure with prop lock pin as shown in figure “B”
below. Failure to do so will result in death or
serious injury. Refer to owner’s/user’s manual for
proper procedure.
Prop Lock
Pin
Storage
Prop
Stored
Position
Maintenance
Position
Bolt
Maintenance
Prop
1751-1293
FIG.“B”
FIG.“A ”
CRUSH HAZARD
DO NOT WORK UNDER OR IN FRONT OF
DOCK LEVELER unless ALL props have been
properly positioned and secured. First, back out
bolt to position side maintenance prop(s) as shown
in figure “A” below. Then position storage prop and
secure with prop lock pin as shown in figure “B”
below. Failure to do so will result in death or
serious injury. Refer to owner’s/user’s manual for
proper procedure.
Prop Lock
Pin
Storage
Prop
Stored
Position
Maintenance
Position
Bolt
Maintenance
Prop
1751-1293
FIG.“B”
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4111-0024 — Apr. 2020
©2020 Systems, LLC
Placard
PRECAUTIONS
1751-0878
OPERATING
INSTRUCTIONS
• Read and follow all
instructions, warnings, and
maintenance schedules in
the manual and on placards.
• Operation and servicing of
dock leveler is restricted to
authorized personnel.
• Always chock transport vehicle wheels or engage vehicle restraint
and set parking brakes before operating dock leveler or beginning
to load or unload.
• Before activating dock leveler, check to make sure the transport
vehicle is positioned squarely against dock bumpers. Ensure lip will
avoid contact with transport vehicle frame, sides and cargo during
dock leveler activation. If contact is likely or observed, reposition
transport vehicle.
• Ensure the transport vehicle oor supports extended lip or the
leveler frame (lip keepers or below dock endload supports) supports
the ramp before driving on ramp.
• Stay clear of hinges and front and sides of moving dock leveler.
• Never use hands or equipment to move the ramp or lip.
• Never use damaged or malfunctioning dock leveler. Report problems
immediately to supervisor.
• Always store dock leveler and remove people, material, and
equipment from ramp before vehicle leaves the dock.
• DO NOT ENTER PIT unless dock leveler is securely supported
and proper lockout/tagout procedures have been completed. See
“Maintenance Precautions” in Owner’s/User’s Manual.
FAILURE TO FOLLOW THESE INSTRUCTIONS WILL RESULT
IN DEATH OR OTHER SERIOUS INJURY.
DANGER
POWERED DOCK LEVELERS
NORMAL OPERATION
1. Raise the platform by Pressing and holding
the RAISE button.
2. Hold the RAISE button until the lip is fully
extended, then release the RAISE button.
The platform will lower until lip is resting on
the transport vehicle.
STORING LEVELER
1.
Press the RAISE button until the lip is
completely folded. When the lip is folded,
release the RAISE button. The platform will
lower returning to the cross-trafc position.
BELOW DOCK ENDLOADING
• (AIR POWERED ONLY) Press and hold
the RAISE button until the leveler is 12”
above dock level. Pull the below dock level
chain until the leveler lowers the full below
dock position.
• (HYDRAULIC ONLY)
Press and hold
the RAISE button until the leveler is fully
raised. As the lip starts to extend, release
the RAISE button. The leveler will lower
to the below dock position provided the
lip extension allows the lip to clear the lip
keepers.
•
(HYDRAULIC WITH INFINITE LIP
CONTROL) If equipped, raise the platform
by Pressing and holding the RAISE button.
When the lip is just above the lip keepers,
simultaneously Press and hold the RAISE
button and the LIP OUT button until lip has
extended beyond the lip keepers. Release
both buttons.
NOTE: If equipped, Pressing E-STOP button will stop platform from lowering.
1.800.643.5424
Call for additional placards, or manuals, or with questions
regarding proper use, maintenance, and repair of dock leveler.
1751-0874 Rev D
Scan to view our owner’s/user’s manuals online.
www.LoadingDockSystems.com
WARNING: CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov

64111-0024 — Apr. 2020
©2020 Systems, LLC
1) The manufacturer shall provide to the initial
purchaser and make the following information
readily available to the owners/users and their
agents, all necessary information regarding
Safety Information, Operation, Installation and
Safety Precautions, Recommended Initial and
Periodic Inspections Procedures, Planned
Maintenance Schedule, Product Specifications,
Troubleshooting Guide, Parts Break Down,
Warranty Information, and Manufacturers
Contact Information, as well as tables to identify
the grade(slope) for all variations of length or
configuration of the dock leveling device and
information identifying the maximum uncontrolled
drop encountered when sudden removal of
support while in the working range of the
equipment.
2) When selecting loading dock safety equipment,
it is important to consider not only present
requirements but also future plans and any
possible adverse conditions, environmental
factors or usage. The owners/users shall provide
application information to the manufacturer
to receive recommendations on appropriate
equipment specifications and capacity.
3) The owner/user must see all nameplates,
placards, decals, instructions and posted
warnings are in place and legible and shall not
be obscured from the view of the operator or
maintenance personnel for whom such warnings
are intended for. Contact manufacturer for any
replacements.
4) Dock leveling devices may become hazardous
if the manufacturer’s instructions regarding
modifications or adjustments are not followed.
Modifications or alterations of dock leveling
devices shall only be made with prior written
approval from the original manufacturer. These
changes shall be in conformance with all
applicable provisions of the MH30.1 standard
and shall also satisfy all safety recommendations
of the original equipment manufacturer of the
particular application.
5) The owner/user should recognize the inherent
dangers of the interface between the loading
dock and the transport vehicle. The owner/ user
should, therefore, train and instruct all operators
in the safe operation and use of the loading dock
equipment in accordance with manufacturer’s
recommendations and industry standards.
Effective operator training should also focus on
the owner’s/user’s company policies, operating
conditions and the manufacturer’s specific
instructions provided with the dock leveling
device. Maintaining, updating and retraining all
operators on safe working habits and operation of
the equipment, regardless of previous experience,
should be done on a regular basis and should
include an understanding and familiarity with all
functions of the equipment. Owners/users shall
actively maintain, update and retrain all operators
on safe working habits and operations of the
equipment.
6) An operator training program should consist of,
but not necessarily be limited to, the following:
a) Select the operator carefully. Consider the
physical qualifications, job attitude and aptitude.
b) Assure that the operator reads and fully
understands the complete manufacturer’s owners/
users manual.
c) Emphasize the impact of proper operation
upon the operator, other personnel, material
being handled, and equipment. Cite all rules and
why they are formulated.
d) Describe the basic fundamentals of the dock
leveling device and components design as related
to safety, e.g., mechanical limitation, stability,
functionality, etc.
e) Introduce the equipment. Show the control
locations and demonstrate its functions.
Explain how they work when used properly and
maintained as well as problems when they are
used improperly.
f) Assure that the operator understands the
capacity rating, nameplate data, placards and all
precautionary information appearing on the dock
leveling device.
g) Supervise operator practice of equipment.
h) Develop and administer written and practical
performance tests. Evaluate progress during and
at completion of the course.
i) Administer periodic refresher courses. These
may be condensed versions of the primary course
and include on-the-job operator evaluation.
OWNER’S/USER’S RESPONSIBILITIES

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4111-0024 — Apr. 2020
©2020 Systems, LLC
7) Loading dock safety equipment should never
be used outside of its vertical working range, or
outside the manufacturer’s rated capacity. It shall
also be compatible with the loading equipment
and other conditions related to dock activity.
Please consult the manufacturer if you have any
questions as to the use, vertical working range or
capacity of the equipment. Only properly trained
and authorized personnel should operate the
equipment.
8) It is recommended that the transport vehicle
is positioned as close as practical to the dock
leveling device and in contact with both bumpers.
When an industrial vehicle is driven on or off a
transport vehicle during loading and unloading
operations, the transport vehicle parking brakes
shall be applied and wheel chocks or a restraining
device that provides equal or better protection of
wheel chocks shall be engaged. Also, whenever
possible, air-ride suspension systems should have
the air exhausted prior to performing said loading
and unloading operations.
9) When goods are transferred between the loading
dock and a trailer resting on its support legs/
landing gear instead of a tractor fifth wheel
or converter dolly, it is recommended that an
adequate stabilizing device or devices shall be
utilized at the front of the trailer.
10) In order to be entitled to the benefits of the
standard product warranty, the dock safety
equipment must have been properly installed,
maintained and operated in accordance with
all manufacturer’s recommendations and/
or specified design parameters and not
otherwise have been subject to abuse, misuse,
misapplication, acts of nature, overloading,
unauthorized repair or modification, application in
a corrosive environment or lack of maintenance.
Periodic lubrication, adjustment and inspection
in accordance with all manufacturers’
recommendations are the sole responsibility of the
owner/user.
11) Manufacturer’s recommended maintenance and
inspection of all dock leveling devices shall be
performed in conformance with the following
practices: A planned maintenance schedule
program must be followed, only trained and
authorized personnel shall be permitted to
maintain, repair, adjust and inspect dock leveling
devices, and only the use of original equipment
manufacturer parts, manuals, maintenance
instructions, labels, decals and placards or
their equivalent. Written documentation of
maintenance, replacement parts or damage
should be kept. In the event of damage,
notification to the manufacturer is required.
12) Loading dock devices that are structurally
damaged or have experienced a sudden loss of
support while under load, such as might occur
when a transport vehicle is pulled out from under
the dock leveling device, shall be removed from
service, inspected by a manufacturer’s authorized
representative, and repaired or replaced as
needed or recommended by the manufacturer
before being placed back in service.
OWNER’S/USER’S RESPONSIBILITIES

84111-0024 — Apr. 2020
©2020 Systems, LLC
Technical Service at 800-643-5424 or [email protected]
This manual provides current information on the VSH-
series dock leveler (Figure 3). Due to ongoing product
improvement, some parts may have changed, along
with operation and troubleshooting methods. This
manual describes these changes where applicable.
The VSH series dock leveler comes equipped
with an electrical control panel, which allows push
button operation of the dock leveler functions. Each
VSH dock leveler unit and control panel has been
factory prewired and tested to ensure satisfactory
operation.
To illustrate which connections are to be made in the
field at installation, electrical drawings are included
with each order or by contacting Systems, LLC
Technical Services.
VSH dock levelers are available in the following sizes,
weight capacities, and options:
Width
6 ft (1829 mm)
6.5 ft (1981 mm)
7 ft (2134 mm)
Length
5 ft (1524 mm)
6 ft (1829 mm)
8 ft (2438 mm)
Capacity (CIR*)
40,000 lb (18 144 kg)
45,000 lb (20 412 kg)
50,000 lb (22 680 kg
* CIR (Comparative Industry Rating)
Call McGuire to discuss available Powerpack
mounting configurations, voltages, phases and options
to meet your specific needs.
General Information
Figure 3
INTRODUCTION

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4111-0024 — Apr. 2020
©2020 Systems, LLC
* Models may be equipped with 1 or 2 cylinders.
**Powerpack may be mounted on underside of leveler or remotely. Remote unit shown, see pages 50-52 for Powerpack options.
A — Lip
B — Platform
C — Lip Cylinder(s)*
D — Flow Control Valve
E — Hoist Cylinder(s)*
F — Storage Prop Yoke
G — Prop Kicker Solenoid
H — Storage Prop Assembly
J — Hinge Pins
K — Stored Limit Switch
L — Maintenance Props
M — Powerpack**
N — Control Box
Component Identification
Inspect package and all components. Report any missing or damaged items immediately
and note on the shipping Bill Of Lading (BOL).
INTRODUCTION
Figure 4
N
M
H
C
F
D
A
B
E
K
J
G
L L L

10 4111-0024 — Apr. 2020
©2020 Systems, LLC
Installation Precautions
Installation of vertical dock levelers from inside
is recommended, as combined height of leveler
and proper lifting equipment may be greater than
outside door height.
File Name: 1751-0138 Rev B
Decal Size: 4 x 2
CRUSH HAZARD
DO NOT REMOVE hydraulic cylinder until leveler is
safely supported by maintenance prop. Refer to
owner’s/user’s manual for proper maintenance
procedure. Failure to comply will result in death or
serious injury. 1751-0138 Rev B
INSTALLATION
DO NOT grind or weld if hydraulic fluid or other
flammable liquid is present on the surface to be
ground or welded.
DO NOT grind or weld if uncontained hydraulic fluid
or other flammable liquid is present. Stray sparks
can ignite spills or leaks near the work area. Always
clean up the oil leaks and spills before proceeding
with grinding or welding.
Always keep a fire extinguisher of the proper type
nearby when grinding or welding.
Only trained installation professionals with the
proper equipment should install this product.
It is recommended and good safety practice to use
an additional means to support the dock platform
and lip anytime when physically working in front of
or under the dock leveler. This additional means
may include, but is not limited to a boom truck, fork
truck, stabilizing bar or equivalent.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
installation is complete.
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.
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 vehicle restraint
base, NEVER to the moving components.
Failure to follow these instructions may damage the
motor, hydraulics, wiring, and/or control panel.
FIG.“A”
File Name: 1751-1293
Decal Size: 3.75 x 6.25
CRUSH HAZARD
DO NOT WORK UNDER OR IN FRONT OF
DOCK LEVELER unless ALL props have been
properly positioned and secured. First, back out
bolt to position side maintenance prop(s) as shown
in figure “A” below. Then position storage prop and
secure with prop lock pin as shown in figure “B”
below. Failure to do so will result in death or
serious injury. Refer to owner’s/user’s manual for
proper procedure.
Prop Lock
Pin
Storage
Prop
Stored
Position
Maintenance
Position
Bolt
Maintenance
Prop
1751-1293
FIG.“B”

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4111-0024 — Apr. 2020
©2020 Systems, LLC
A—Pit Width
B— Pit Depth (Dock Floor-to-Pit Floor)
C— Pit Length
D— Distance (Pit Corner-to-Corner)
(Top, Bottom, and Both Sides)
E— Electrical Junction Box
F— Floor Embed Plate
Prepare Pit
INSTALLATION
Before lowering the dock leveler into the pit, the
following must be performed:
1. Remove all debris from the pit and sweep the pit
clean.
2. Check the entire dock leveler pit for proper
construction according to approved/certified
pit drawings. Make sure pit is square, has the
proper depth and taper by making the following
measurements (see Figure 5):
• Measure pit width distance (A) at both front and
rear of pit.
• Measure dock floor-to-pit floor distance (B) on
both sides of the rear embed channel and at
front if applicable.
• Measure pit floor taper; rear to front cannot
exceed 1/2” total taper.
• Measure pit length distance (C) at both sides.
• Measure corner-to-corner (cris-cross) distance
(D) at both sides. Take measurements at dock
floor level and at pit floor level.
Note: If any measurements are off by more than 1/8
in. (3.2 mm) in depth and/or width, or 1/4 in (6.3 mm)
in squareness contact Technical Services before
proceeding.
3. Make sure the field junction box for the dock
leveler (E) and floor embed plate (F) is at the
correct location per pit diagrams.
Retrofit installations: Refer to the job-specific
layout drawings provided by Systems, LLC for retrofit
installations. Hinge plate weldment must be welded to
embedded channel along top, bottom, and both sides,
and all holes must be plug welded.
Contact Systems, LLC Technical Services for digital
copies of layout drawings if required.
C
D
A
B
B
F
E
Figure 5
+1/2”

12 4111-0024 — Apr. 2020
©2020 Systems, LLC
Prepare Dock Leveler
INSTALLATION
The dock leveler is heavy. Use a lifting device and
chains with the appropriate lifting capacity and
reach.
Always use the lifting brackets provided with the
unit whenever lowering or lifting a dock leveler.
File Name: 1751-0138 Rev B
Decal Size: 4 x 2
CRUSH HAZARD
DO NOT REMOVE hydraulic cylinder until leveler is
safely supported by maintenance prop. Refer to
owner’s/user’s manual for proper maintenance
procedure. Failure to comply will result in death or
serious injury. 1751-0138 Rev B
A— Lifting Bracket B — Maintenance Props
A
B B
B
Figure 6
Figure 7
FIG.“A”
File Name: 1751-1293
Decal Size: 3.75 x 6.25
CRUSH HAZARD
DO NOT WORK UNDER OR IN FRONT OF
DOCK LEVELER unless ALL props have been
properly positioned and secured. First, back out
bolt to position side maintenance prop(s) as shown
in figure “A” below. Then position storage prop and
secure with prop lock pin as shown in figure “B”
below. Failure to do so will result in death or
serious injury. Refer to owner’s/user’s manual for
proper procedure.
Prop Lock
Pin
Storage
Prop
Stored
Position
Maintenance
Position
Bolt
Maintenance
Prop
1751-1293
FIG.“B”

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4111-0024 — Apr. 2020
©2020 Systems, LLC
1. Remove any control panel, bumpers or palletizing
that may be banded to the dock leveler. Do not
remove banding on hoist cylinder.
2. Make sure the mounting hardware of lifting
brackets (A) is snug. The brackets should pivot
without binding on the mounting cap screw.
3. Attach lifting chains to lifting brackets (A) and to
a lifting device (i.e., hoist or fork truck) having the
appropriate lifting capacity and reach (see Figure 8).
4. Ensure maintenance props (B) are in the lowered
position and tightly secured (see Figures 6 and 7).
Note: Maintenance props must be in the lowered
position and tightly secured during installation and
service.
Prepare Dock Leveler (continued)
Overall length of lifting chain and bracket must be
kept to a minimum to prevent interference between
the lifting equipment and the building ceiling or
door as the dock leveler is lowered into the pit.
INSTALLATION
Installation of vertical dock levelers from inside
is recommended, as combined height of leveler
and proper lifting equipment may be greater than
outside door height.
A
Figure 8

14 4111-0024 — Apr. 2020
©2020 Systems, LLC
Install Dock Leveler
A — Pit Height/Embed Height
B — Shim Location (Under Storage Prop)
C — Pit Floor
D — Pit Floor Embed
E — Leveler Rear Embed
INSTALLATION
Figure 10
O󰀨set w/Load Over Center
(Acceptable)
Stepped
(Acceptable)
Pyramid
(Preferred)
Shim Stacking Methods
O󰀨set w/Load Over Edge
(Not Acceptable)
Straight
(Not Acceptable)
E
D
B
Figure 9
Figure 11
D
E
C
B
A
D

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4111-0024 — Apr. 2020
©2020 Systems, LLC
E— Leveler Rear Embed
F— Dock Leveler
G— Maintenance Props
H— Hinge Pins
J— Lifting Lug
K— Storage Prop
INSTALLATION
10” pit models only: Before installing the leveler, the
storage prop trunnion (K) in the rear embed channel
(E) must be shimmed (B) and welded to the embed
on the pit floor (D). See Figures 9, 10 and 11.
The minimum size of the shim that contacts the
leveler frame (i.e. the top shim of each shim stack)
must be at least 4” x 4” (101.6 mm x 101.6 mm) to
support the full width of the hoist cylinder/storage
prop weldment and to provide a shelf for a fillet
weld.
Use the thickest shim stock possible for stability
and weld penetration purposes. DO NOT use
multiple layers of 1/8 in. (3.18 mm) or thinner shim
stock.
1. Lube the three rear hinge pins (H) using grease,
then install the three pins in the rear embed only
halfway through the first hinge tube.
2. Lower the dock leveler down, centering the
leveler’s three hinges with the embed’s hinges.
• Insert the hinge pins. Work across the dock
leveler, installing one side, then the center, and
finally the other side. See Figure 13.
• Optional: Use a bottle jack to help align the rear
of the dock leveler to the embed channel as
shown in Figure 12.
3. Once the three hinge pins are installed, install the
storage prop (K). Install the prop pin and clip.
4. Remove banding from hoist cylinder.
Note: Do not connect hoist cylinder at this time.
Air must be purged from system; see pages 18-19.
E
K
G
F
Bottle Jack
H
G
J
Install Dock Leveler (continued)
Figure 12 Figure 13

16 4111-0024 — Apr. 2020
©2020 Systems, LLC
Note: VSH-series control boxes may be wall-
mounted or stanchion mounted.
1. If wall-mounting, mount the push-button control
panel (B) so bottom of control panel-to-dock floor
distance (C) is approximately 48 in. (1219 mm). See
Figure 14. If stanchion-mounting, mount control box
to stanchion in desired location.
2. Install electrical disconnect panel (A) if not already
installed. Disconnect panel supplied by others.
3. Install and connect the control wiring (see
drawings supplied with equipment).
4. Seal the conduit in any location where the conduit
crosses over temperature zones that could produce
condensation.
Optional: Install spacers between the wall and
enclosure to provide temperature insulation and air
flow. If the conduit could fill with water, a drip leg
may be needed.
5. Install placard (see page 17).
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.
B
A
C
A— Disconnect Panel
B— Control Panel
(provided by others)
C— Distance, 48 in. (1219 mm)
Figure 14
INSTALLATION
Install Control Panel and Wiring
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, hydraulics, 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.
1.50"
3.00"
Decal Size: 1.5 x 3
File Name: 1751-0736 Rev A
Arc Flash and
Shock Hazard
PPE [Personal Protection
Equipment] Required
De-energize equipment before
working on or inside. Do not
open cover without appropriate
PPE. Refer to NFPA 70E for
PPE requirements. This panel
may contain more than one
power source.
Hazardous Voltage
Will Result in Death
or Serious Injury
1751-0736 Rev A

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4111-0024 — Apr. 2020
©2020 Systems, LLC
Placard Installation Instructions
Control Box
Conduit
Nylon Tie
Placard
•
Owner/Users are responsible for the installation and placement of product
placards.
•
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 tie. If there is no control box present, mount placard
on wall to the immediate left of leveler at eye level.
(Placard placement
shown as reference
only.)
• Owner/Users are responsible for the installation and placement of product
placards.
• 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. If there is no control box present, mount placard
on wall to the immediate left of leveler at eye level.
A
B
C
D
A - Control Box B - Placard C - Nylon Cable Tie D - Conduit
Placard Installation Instructions
Control Box
Conduit
Nylon Tie
Placard
• Owner/Users are responsible for the installation and placement of product
placards.
• 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 tie. If there is no control box present, mount placard
on wall to the immediate left of leveler at eye level.
(Placard placement
shown as reference
only.)
(Placard placement shown
as example only.)
A
B
C
D
Figure 15
INSTALLATION

18 4111-0024 — Apr. 2020
©2020 Systems, LLC
1. Using an external lifting device, support the VSH
leveler in the stored position, with the maintenance
props lowered in the maintenance position and all
hardware tightend by wrench.
2. Lock out the storage prop (A) with the prop pin
and clip, then lock-out and tag-out the leveler.
3. Remove the screws holding the stored limit
switch (B) in place. Move the stored limit switch away
from the storage prop. See Figure 16.
4. If connected, remove the rue clip (C) and
disconnect the lower hoist cylinder mounting pin (D).
See Figure 17.
5. For platform-mounted reservoirs, replace the rear
plug on the fluid reservoir with the included breather
cap if not already present.
6. Fully open the down speed flow control valve
(E) by loosening the et screw (K) and turning knob
(F) counter-clockwise (see Figure 18). Record the
number of turns/original setting.
7. Turn ON power to the leveler. Confirm the BLUE
“Leveler Stored” indicator light on control panel is no
longer illuminated.
8. With the cylinder disconnected from the embed,
cycle the hoist cylinder up and down at least 6 times
using the leveler’s own hydraulic power.
9. Reconnect the hoist cylinder rod eye (G) to the
base of the embed or carriage by completing the
following steps:
a. Fully extend the hoist cylinder by pressing
and holding the RAISE button until the rod stops
extending and the powerpack goes into pressure
relief.
b. Loosen the jam nut (H) and adjust the rod eye
(G) so that the center of the rod eye is half way
below the center of the hole of the embed (see
Following start-up, or 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, air must
be fully purged from the hydraulic system.
Purging Air From VSH Hydraulic System & Adjusting Rod Eye
Figure 19). After adjusted, tighten the jam nut.
c. To center the rod eye with the embed, tap the
lower button on the control panel until the
cylinder pin (D) easily slides through both the
trunnion and rod eye.
d. Install washers (J) between rod eye sides and
trunnion to limit rod eye movement, and lock rue
clip (C) into place as shown in Figure 17.
10. Reinstall the stored limit switch (B). Confirm the
BLUE “Leveler Stored” indicator light on control panel
is illuminated afte.
11. Reset the down speed flow control valve to the
original setting recorded in step 6.
Note: If original setting was lost or not recorded, flow
control can be set manually by using instructions on
page 30.
12. Once ideal down speed flow control setting is
achieved, lock the adjustment in place by tightening
the set screw (K) on the adjustment knob.
13. Raise the maintenance props to the stored
position and tighten all hardware, then remove
storage prop pin and clip.
14. Disconnect the external lifting device and chains
from the lifting bracket(s).
15. Press the LOWER button and bring the leveler to
a 45 degree angle.
16. Cycle lip by pressing the LOWER and LIP
buttons together to lower the lip, then press the
RAISE and LIP buttons together to raise the lip. Lip
cylinder is now purged.
17. Raise leveler to stored position and top o󰀨
hydraulic uid as required. See pages 26-27 for
correct uid level and type.
INSTALLATION
File Name: 1751-0229 Rev E
Decal Size: 4 x 1