McGuire MA Series Dock Leveler Owner's/User's Manual

MA Series
Dock Leveler
Owner’s/User’s Manual
W.B.MCGUIRE • Division of Systems, Inc. • W194 N11481 McCormick Drive • Germantown, WI 53022
800.624.8473 • fax: 262.255.5917 • www.wbmcguire.com • [email protected]
Printed in U.S.A.
Copyright © 2015
Manual No. 4111-0021
May 2015
Table of Contents
Page
Safety
Recognize Safety Information.............................................................. 1
General Operational Safety Precautions............................................. 1
Operational Safety Precautions............................................................ 2
Maintenance Safety Precautions.......................................................... 4
Safety Decals.......................................................................................... 5
Owner’s/User’s Responsibilities.......................................................... 6
Introduction
General Information...............................................................................
Dock Leveler Stock Specifications......................................................
Component Identification......................................................................
Theory...................................................................................................
7
7
8
8
Installation
Prepare Pit..............................................................................................9
Prepare Dock Leveler........................................................................... 10
Install Dock Leveler............................................................................. 11
Install Control Panel and Wiring........................................................ 16
Put New Leveler Into Service.............................................................. 17
Operation
Operating Instructions........................................................................ 18
Ramp Loading/Unloading Instructions........................................ 19
End Loading/Unloading Instructions........................................... 20
Maintenance
Service Dock Leveler Safely............................................................... 21
Periodic Maintenance.......................................................................... 22
Adjustments
Adjust Lip Latch and Lip Actuator Springs...................................... 24
Adjust Lip Stop.................................................................................... 26
Troubleshooting
Troubleshooting................................................................................... 28
Electrical
Electrical 115/1 phase.......................................................................... 30
Parts
Controls................................................................................................
Lip Activation.......................................................................................
Air Bladder and Support.....................................................................
Frame and Platform.............................................................................
Weather Seals......................................................................................
Toe Guards...........................................................................................
Motor and Blower Assembly .............................................................
31
32
35
36
39
39
40
Miscellaneous
Customer Information......................................................................... 41
Warranty................................................................................. Back Cover
SAFETY
Recognize Safety Information
General Operational Safety Precautions
Safety - Alert Symbol
The Safety-Alert Symbol identifies import safety
messages on equipment, safety signs, in manuals,
or elsewhere. When you see this symbol, be alert
to the possibility of personal injury of death.
Follow the instructions in the safety message.
Read and understand the Owner’s/User’s manual and
become thoroughly familiar with the equipment and its
controls before operating the dock leveler.
Never operate a dock leveler while a safety device or
guard is removed or disconnected.
The use of the word DANGER signifies the
presence of an extreme hazard or unsafe practice
which will most likely result in severe injury or
death.
The use of the word WARNING signifies the
presence of a serious hazard or unsafe practice
which may result in serious injury or death.
The use of the word CAUTION signifies possible
hazard or unsafe practice which could result in
personal injury.
NOTICE
The use of the word NOTICE is to draw attention
to a procedure that needs to be followed to prevent
machine damage.
4111-0021 — May 2015
Never remove DANGER, WARNING, or CAUTION
signs or Decal’s on the equipment unless replacing
them.
ng
ati
ne
Zo
r
e
Op
era
Op
g
tin
ne
Zo
Do not start the equipment until all unauthorized
personnel in the area have been warned and have
moved outside the operating zone.
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.
1
SAFETY
Operational Safety 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
clear of
of dock
dockleveling
levelingdevice
devicewhen
whentransport
transport
vehicle is entering or leaving area.
thethe
dock
leveling
device
if if
Do not
not move
moveororuse
use
dock
leveling
device
anyone is under or in front of it.
Keep hands
hands and
and feet
feetclear
clearofofpinch
pinchpoints.
points.Avoid
Avoid
putting any part of your body near moving parts.
Chock/restrain all transport vehicles, Never remove
the wheel chocks until loading or unloading is
finished and transport driver has been given
permission to drive away.
Do not use a broken or damage dock leveling
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.
2
4111-0021 — May 2015
SAFETY
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.
4111-0021 — May 2015
3
SAFETY
Maintenance Safety Precautions
ALWAYS disconnect electrical power source and
ground wire before welding on dock leveler.
DO NOT ground welding equipment to any hydraulic
or electrical components of the dock leveler. Always
ground to the dock leveler frame.
Hydraulic and electrical power must be OFF when
servicing the equipment. For maximum protection,
use an OSHA approved locking device to lock
out all power sources. Only the person servicing
the equipment should have the key to unlock the
device.
Failure to follow these instructions may result in
damage to dock leveler and/or serious personal
injury or death.
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 post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the unit before maintenance is
complete.
Always keep a fire extinguisher of the proper type
nearby when grinding or welding.
Failure to follow these instructions may result in
serious personal injury or death.
ALWAYS stand clear of dock leveler lip when
working in front of the dock leveler. Failure to do this
may result in serious personal injury or death.
A maintenance prop permanently attached and
hinged to the unit with means for lock out/tag out
requirements (per OSHA 1910.147) is included
with each pit style dock leveler. In addition, 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 not limited to a boom truck, fork truck,
stabilizing bar or equivalent.
4
4111-0021 — May 2015
SAFETY
Safety Decals
Every 90 days (quarterly) inspect all safety labels and tags to
ensure they are on the dock leveler and are easily legible. If any
are missing or require replacement, please call 1-800-643-5424
for replacements.
5.06"
DANGER
2.40"
CRUSH HAZARD
Maintenance prop must
support leveler behind bar.
Do not force maintenance
prop forward of bar to
support lip. Failure to
comply will result in death or
serious injury. Refer to
owner’s/user’s manual for
proper use.
1751-0727
(decal placed on
front header)
1751-0730 (x2)
1751-0727 Rev A
Control Box Size:
Decal Size:
5.06 x 2.40
9.12"
File Name: 1751-0727 Rev A
SAFETY INFORMATION
DANGER
3.25"
Unsupported dock leveler
ramps can lower unexpectedly.
Before allowing vehicle to leave
the dock always:
Ensure no equipment,
material or people are on
dock leveler.
Return dock leveler to its
stored position at dock level.
OPERATION
1. Read and follow all instructions and
warnings in owner’s/user’s manual.
2. Use of dock leveler restricted to
trained operators
3. Always chock trailer wheels or
engage truck restraint before
operating dock leveler or beginning to
load or unload.
4. Never use hands or equipment to
move ramp or lip
5. Before activating dock leveler:
Ensure trailer is backed in against
bumpers.
Remove any end loads if required.
Check trailer alignment to avoid lip
interference. If lip does not lower to
trailer bed, reposition vehicle.
6. Ensure truck bed supports extended
lip or leveler frame supports the ramp
before driving on ramp.
Failure to follow posted instructions will result in death or serious injury.
7. Stay clear of hinges and front and
sides of moving dock leveler.
8. N e v e r u s e d a m a g e d o r
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 trained personnel.
3. Place barriers on the driveway and
dock floor to indicate service work is
being performed.
4. DO NOT ENTER PIT unless dock
leveler is securely supported by
maintenance prop.
5. If electrically powered turn off and use
OSHA lockout/tagout procedures.
Call 262.255.1510 for replacement placards, warning labels, or owner’s/user’s manuals.
(decal placed in same position on both sides)
Control Box Size:
Decal Size: 9.12 x 3.25
File Name: 1751-0730 Rev A
1751-0329 (x2)
DO NOT
FORK THIS SIDE
(decal placed in same position on both sides)
Control Box Size:
Decal Size: 13 x 2
File Name: 1751-0329
FORK
HERE
1751-0330 (x2)
(decal placed in same position on both sides)
Control Box Size:
Decal Size: 6 x 2
File Name: 1751-0330 REV A
1751-0729
1.02"
8.72"
DANGER
CRUSH HAZARD
Do not work under dock leveler unless this maintenance prop has been secured in the upright
position. Failure to comply will result in death or serious injury. See owner’s/user’s manual for proper
procedures.
1751-0729 Rev A
S
Y
S
T
E
M
S,
I
P O W E R A M P
M C G U I R E
D L M
N
C.
L o a d i n g D o c k E q u i p m e n t
5.05"
Control Box
Size:
MANUAL
DWG
Decal Size: 8.72 x 1.02
File Name: 1751-0729 Rev A
STOCK NO.
KRV
1751-0731
DRAWN BY
TOLERANCES
(UNLESS OTHERWISE NOTED)
FRACTIONAL: 1/32"
DECIMAL:
2.40"
MATERIAL
CHECKED BY
DRAWING NO.
.00 = .01"
.000 = .005"
DANGER
CRUSH HAZARD
DATE
Rotate prop to maintenance
position. Open the pin latch
and insert through the
maintenance prop housing.
Close the pin latch to secure
prop. Use every time dock
leveler is serviced. Failure to
comply will result in death
or serious injury.
6/14/2012
AP68 2
1751-0731
ANGULAR: 1
This print is the property of Systems, Inc. and represents a proprietary article in which Systems, Inc. retains any and all
Control
Box
patent and other rights, including exclusive rights of use and/or manufacture and/or sale. Possession
of this
printSize:
does
not convey any permission to reproduce, print or manufacture the article or articles shown therein, such permission to be
Decal Size: 5.05 x
granted only by written authorization signed by an officer or other authorized agent of Systems, Inc. thereof.
2.40
5.92"
File Name: 1751-0731Rev
A
DANGER
2.36"
1751-0726
CRUSH HAZARD
DO NOT ENTER PIT unless dock leveler is
safely supported by maintenance prop. Place
barriers on driveway and dock floor to indicate
service work being performed. Failure to comply
will result in death or serious injury. Refer to
owner’s/user’s manual for proper maintenance
procedures.
1751-0726 Rev A
Control Box Size:
Decal Size: 5.92 x 2.36
File Name: 1751-0726 Rev A
4111-0021 — May 2015
5
OWNER’S/USER’S RESPONSIBILITIES
1. The owner/ user should recognize the inherent dangers of the interface between the loading dock and
the transportation 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 and operating conditions. Maintaining, updating and re training 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.
Owner’s/user’s shall actively maintain, update and retrain all operators on safe working habits and
operations of the equipment.
2. The manufacturer shall provide to the initial purchaser 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.
3. It is recommended that when the transportation vehicle is positioned correctly in the dock opening and in
contact with both bumpers, there shall be a minimum of 4.00 inches (100mm) overlap of the leveling
device and the transportation vehicle at all times during the loading and unloading process.
4. The Owner/User must review all name plates, placards, decals, instructions and posted warnings and
place the same in view of the operator or maintenance personnel for whom such warnings are intended
for. Contact manufacturer for any replacements.
5. Manufacturer’s recommended periodic maintenance and inspection procedures in effect at the date of
shipment shall be followed at all times. Written documentation of maintenance, replacement parts or
damage should be retained. In the event of damage notification to the manufacturer is required.
6. Loading dock equipment that has been structurally damaged or has experienced a sudden loss of main
support while under load (such as what might occur when a transport vehicle pulls out from under the
leveling device) shall be removed from service, inspected by a manufacturer’s authorized representative,
and repaired or replaced as needed before being placed back in service.
7. Any modifications or alterations of loading dock equipment shall only be done with prior written approval
from the manufacturer and the same shall be at least as safe as the original equipment was prior to the
modification and shall also satisfy all safety requirements of the manufacturer for the particular
application of the leveling device.
8. When industrial moving devices are being used in the loading or unloading of product from the
transportation vehicle, this vehicle shall have the brakes and wheel chocks applied appropriately or all
other positive restraining device shall be fully utilized. It is recommended that transport vehicles with airride suspension systems shall have its air exhausted prior to performing loading and unloading operation
to minimize transport vehicle bed drop.
9. Loading dock safety equipment should never be used outside of its intended use, vertical working range,
or capacity. 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.
10. 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.
6
4111-0021 — May 2015
GENERAL INFORMATION
Dock Leveler Stock Specifications
MA-Series dock levelers are available in the following
sizes, weight capacities, and options:
Width: MA
6 ft (1828.8 mm)
6-1/2 ft (1981.2 mm)
7 ft (2133.6 mm)
Length
6 ft (1828.8 mm)
8 ft (2438 mm)
10 ft (3048 mm)
Congratulations on your choice of a McGuire dock
leveler. This manual covers the Air Bag, MA model air
powered dock leveler.
Designed by McGuire to be a marvel of simplicity and
efficiency, your dock leveler, when properly installed,
will provide many years of trouble-free performance
with an absolute minimum of maintenance. Its
revolutionary air bag system efficiently controls
and operates every function. To obtain maximum
performance and longest possible use, a simple
program of preventive maintenance is recommended.
Capacity (CIR*)
25,000 lb (11
30,000 lb (13
35,000 lb (15
40,000 lb (18
45,000 lb (20
50,000 lb (22
340
608
876
144
412
680
kg)
kg)
kg)
kg)
kg)
kg)
* CIR (Comparative Industry Rating)
All docks are available in 115V motors only.
The MA dock leveler comes equipped with an electrical
control panel, which allows push button operation
of the dock leveler functions. Each MA 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 Technical Services.
Once again, thank you and congratulations on your
purchase of the dock leveler.
4111-0021 — May 2015
7
INTRODUCTION
Component Identification
O
A
C
P
N
D
B
J
H
G
K
I
A — Lip
E — Lip Maintenance Prop Pivot)
B — Lip Assist Rod
F — Lip Actuator Snubber Spring
C —Lip Linkage Assembly G — Lip Actuator Chain
D — Lip Latch Assembly
E
F
H — Air bag support pallet
I — Lip Keepers (2 used)
J — Air bag
K — Main Frame
L
M
L — Maintenance Prop
M —Blower Motor N —Toe Guard (2 used)
O —Raise Button
P —Safety Legs
THEORY
The MA dock leveler uses a blower motor and
one‑button operation for ease of use.
The dock leveler can be operated remotely using
the RAISE button (O) on the control panel . This
activates an electric blower motor (M). The blower
forces air into the air bag (J), causing the platform to
rise. Releasing the RAISE button allows the platform
to lower.
When the platform rises to the point where there is
2 — 3 in. (51 — 76. mm) from its full raised height,
the lip spring (F) and lip actuator chain (G), causes
the lip linkage assembly to push the lip out and up.
The lip assist spring (not shown) also helps keep the
lip extended. When the lip is fully extended, the lip
latch cable engages the lip latch assembly, locking
the lip in the extended position. The dock leveler has
reached its full height when the lip is fully extended.
8
To lower the platform, release the Raise button (O).
The platform will lower until the extended lip rests on
the transport vehicles. If the lip did not fully extend or
there is no transport vehicle at the dock the platform
will lower until one of the following conditions occur:
-- Lip is resting on lip keepers (cross-traffic position).
-- Leveler went to the below-dock position, lip folds
automatically, leveler rests on the safety legs
(below dock position).
-- Leveler went to the below dock position with
operator holding the safety leg retract cable
(not shown), safety legs are retracted, lip folds
automatically causing dock to rest in the full below
dock position.
4111-0021 — May 2015
INTRODUCTION
Prepare Pit
E
A
C
B
14”
10”
D
A—Distance (Pit Width)
(Front and Rear)
B— Distance (Dock Floor-to-Pit
Floor) (All Four Corners)
C— Distance (Pit Length)
(Both Sides of Pit)
D— Distance (Pit Corner‑ to‑ Corner)
(Top, Bottom, and Both Sides)
1. Before lowering the dock leveler into the pit, the
following must be performed:
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.
2. Remove all debris from the pit and sweep the pit
clean.
3. Check the entire dock leveler pit for proper
construction according to approved/certified pit
drawings. Make sure pit is square by making the
following measurements:
•
•
Only trained installation professionals with the
proper equipment should install this product.
NOTICE
DO NOT remove the shipping bands around the
dock leveler lip until instructed to do so.
•
•
Measure pit width distance (A) at both front
and rear of pit.
Measure dock floor-to-pit floor distance (B)
at all four corners.
Measure pit length distance (C) at sides.
Measure corner-to-corner (criss-cross) distance (D) at both sides. Take measurements
at dock floor level and at pit floor level.
If any measurement is off by more than 1/8
in. (3.18 mm), contact Technical Services
before proceeding.
4. Make sure the field junction box for the dock
leveler (E) is at the correct location per pit
diagrams.
4111-0021 — May 2015
9
INSTALLATION
Prepare Dock Leveler
NOTICE
A
DO NOT remove the shipping bands (B) around
the platform lip and leveler frame at this time. The
shipping bands are needed to hold the leveler
together during the installation process.
1. Remove any control panel and bumpers that
may be banded to the frame of the dock leveler.
DO NOT remove the shipping bands (B) around
the platform lip and leveler frame at this time.
NOTICE
B
A— Lifting Bracket (2 used)
DO NOT over tighten the lifting bracket hardware.
Over tightening can damage the weather seal, if
equipped.
B — Shipping Bands
Poweramp dock levelers are designed with installation
in mind. Each unit is shipped with lifting brackets (A)
fastened to the platform side joists.
NOTE:Overall width of platform and lifting brackets
(A) must be kept to a minimum to prevent interference
between the lifting brackets and the pit walls as the
dock leveler is lowered into the pit.
The dock leveler is heavy. Use a lifting device and
chains with the appropriate lifting capacity and
reach.
2. Make sure the mounting hardware of lifting brackets
(A) is snug. The brackets should pivot relatively
freely on the mounting cap screw. DO NOT over
tighten.
Always use the lifting brackets provided with the
unit whenever lowering or lifting a dock leveler into
or out of a pit.
3. Attach lifting chains to lifting brackets (A) and to a
lifting device (i.e., hoist or fork transport) having
the appropriate lifting capacity and reach.
Failure to follow these instructions may result in
damage to dock leveler and/or serious personal
injury or death.
4. Remove wood blocks that are attached to the
leveler frame before putting the dock leveler into
the pit.
5. Attach a temporary, switched, power supply to the
blower before lowing leveler into pit. Keep power
cables clear of frame members, shim locations
and pinch points. DO NOT CONNECT POWER
AT THIS TIME.
6. Remove 3 plastic ties that hold the bag and bag
support skid to the underside of the leveler during
shipping before lowering leveler into pit.
10
4111-0021 — May 2015
INSTALLATION
Shim
Stacking Methods
Install Dock Leveler
N
P
Q
R
R
A— Distance (Leveler Frame
Height)
B— Shim Locations (Under
Rear Vertical Supports,
4-5 Places TYP)
C— Shim Locations (Under
Lip Keepers,
C —Shim Under Snubber
Spring Mount
D— Dock Floor
E— Rear Pit Curb Angle
4111-0021 — May 2015
F— String
G— Rear Hinge Frame Angle
H— Distance (Dock Floor-to-Pit
Floor)
J— Distance (Top of Shim
Stack-to-Dock Floor)
K— Shim Stack
L— Dock Leveler Frame
M — Pyramid (Preferred)
N— Stepped (Acceptable)
P— Offset (Not Acceptable)
Q — Straight (Not Acceptable)
R — Lip Keeper (Shim between
lip keeper and curb angle
as required)
D
E
F
G
L
J
K
H
11
INSTALLATION
NOTE:McGuire dock levelers are designed with a
nominal 1/2 in. (12.7 mm) shimming distance to allow
for pit inconsistencies.
1. Determine height of shim stack (L) for each shim
location (B) by performing the following:
4. For all MA models, put a 1/4 in. (6.6 mm) thick shim
at locations (D).
NOTE: A 1/4 in. (6.6 mm) thick shim at locations (D)
is used only as a starting point. The final shim stack
height will be determined after dock leveler is lowered
into the pit.
a. Measure leveler frame height distance (A).
b. Measure dock floor-to-pit floor distance (J)
at each shim location (B). Write down the
dimensions obtained at each location.
c. Subtract distance (A) from distance (J) to
obtain the shim height. Repeat for each shim
location.
NOTICE
NOTICE
The minimum size of the shim that contacts the
leveler frame (i.e., the top shim of each shim stack)
must be at least 4-1/2 x 4-1/2 in. (114.3 x 114.3 mm)
to support the full width of the hoist cylinder / storage
prop weldment.
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.
2. Using the results obtained in step 1, create the
individual shim stacks on the pit floor at locations
(B). Build each shim stack (L) using the pyramid
method (N) (preferred) or stepped method (P) with
the top shim having a minimum size of 4-1/2 x
4‑1/2 in. (114.3 x 114.3 mm) and each successive
lower shim being larger so the shims can be
welded together using a fillet weld. DO NOT use
offset method (Q) or straight method (R).
The dock leveler is heavy. Use chains and a
lifting device with the appropriate lifting capacity
and reach. Failure to do so may result in damage
to dock leveler and/or serious personal injury or
death.
5. Using an appropriate lifting device connected to
the lifting brackets, lower dock leveler into the pit
so rear hinge frame angle (H) is tight against rear
pit curb angle (F) across full width of the leveler
frame.
6. Allow rear of dock leveler to rest on the rear shims
while keeping the front of the dock leveler level
with the dock floor.
7. For all MA models, add shims at front shim
locations (D) so front of dock leveler will stay level
with dock floor when leveler is resting fully on
shims.
NOTE: To assist in obtaining an accurate measurement
of distance (K), use a string (G) pulled tight across the
pit opening, directly over the shim locations.
3. Verify that each shim stack is at the correct height
by measuring distance (K) [top of shim stack (L)
to dock floor]. Distance (K) must equal the dock
leveler height (A).
12
4111-0021 — May 2015
INSTALLATION
B
A
C
C
D
D
E
F
G
A— Front of Dock Pit
B— Dock Leveler Frame
3/8 in.
(9.5 mm)
6 in.
(152 mm)
C— Side Pit Curb Angle
D— Gap [3/4 in. (19 mm)
Minimum]
8. With rear hinge frame angle (F) tight against rear
pit curb angle (G), perform/check the following:
• Pry between the platform and rear hinge
frame angle at locations (E) to make sure rear
edge of platform is parallel to the rear hinge
frame angle (F).
• Gap (D) must exist equally along both sides of
leveler so weather seal (if equipped) will not
bind during dock leveler operation.
9. If gap (D) cannot be obtained equally at both sides
of leveler, grind or add material at the rear edge of
rear hinge frame angle (F) as needed.
4111-0021 — May 2015
H
E— Pry Locations
F— Rear Hinge Frame
Angle
G— Rear Pit Curb Angle
H— Flare Bevel Weld, Typical
(To Fit Spacing)
10. Allow the dock leveler to rest fully on the shim
stacks. Check that a smooth and level transition
exists between the dock floor and the dock leveler
platform. Add or remove shims as necessary until
a smooth transition is obtained.
11. If leveler cannot be squared and/or made level
as instructed in steps 8 — 10, contact Technical
Services.
12.With the leveler square in the pit and flush with the
surrounding dock, remove the banding on the lip
of the leveler.
13
INSTALLATION
12.With the leveler square in the pit and flush with
the surrounding dock, remove the banding on the
lip of the leveler.
13.Connect the blower motor to the temporary
power supply.
Two people are required to engage the maintenance
prop: one person to operate the lifting device, the
other person to engage the maintenance prop.
14.Slowly raise the platform. Check for binding as
platform is being raised.
15.If binding occurs, lower the platform. Reposition
leveler and/or add or remove shims as
necessary. Slowly raise platform again. If
platform still binds, contact3 Technical Services
for further instructions.
DO NOT use the maintenance prop to support the
raised platform until the maintenance prop has been
properly shimmed and welded. The shims must be
welded to each other, the leveler frame, and to the
front pit curb steel. Failure to do this may result in
serious personal injury or death.
16.All MA models - Once leveler is flush, square
and does not bind:
a.Install shims under maintenance prop (C)
page 10, where prop attaches to leveler
frame. Make sure prop is solidly shimmed.
1. b.Using the leveler’s blower motor, raise
the dock to the fully open position.
hooks on the underside of platform.
(figure 1) and removing the band
clamp from the motor coupler. (figure
between each weld.
c. Raise maintenance prop to the
service (upright) position and lock
prop in this position using an OSHA
approved locking device.
figure 1
17.Disconnect power supply from motor.
20.With the rear hinge frame angle (F) tight against
the rear pit curb angle and flush with the curb
figure 2
NOTICE
DO NOT weld before disconnecting all electrical
components.
DO NOT weld before removing air bag, air bag
support pallet and hoses from leveler.
Protect or remove the blower motor before welding.
Failure to follow these instructions may result
damage to these components from stray sparks and
weld splatter.
14
4111-0021 — May 2015
INSTALLATION
NOTICE
DO NOT weld continuously along the full length of
the rear hinge frame angle. This can put unnecessary
stress on the leveler components, causing the
leveler to malfunction and shorten the life span of
the affected components.
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.
NOTE:
The illustration on page 13 shows a typical
weld pattern. The weld pattern will vary slightly
depending on size of dock leveler.
Always keep a fire extinguisher of the proper type
nearby when grinding or welding.
angle (G), weld the rear hinge frame angle (F)
to the rear pit curb angle (G) using a 3/8 in. (9.5
mm) flare bevel skip weld each weld being 6 in.
(152 mm) long.
Failure to follow these instructions may result in
serious personal injury or death.
NOTICE
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, wiring, and/or control panel.
Shim
Stacking Methods
Start at each end with a 6 in. (152 mm) long
weld. Space all the other welds out evenly
leaving approximately 6 in. (152 mm) space
between each weld.
21.All model levelers: Install shims at locations (B,
p.12) using the pyramid or stepped shimming
method. Make sure the platform is level from
side-to-side as well as from front-to-back and
flush with dock floor.
22.Weld front of dock leveler frame (C) to shims
located under the keepers, then weld the shims
to the front pit curb steel.
23.Finish weld all shims using a fillet weld.
•Weld all shims within each shim stack to each
other, then weld the shim stack to the leveler
frame.
•Weld the front leveler frame shim stacks to the
front pit curb steel.
N
P
24.When all welding has been completed, paint all
the welds and shims.
Q
R
* For left/right orientation of dock leveler, see inside back cover of
this manual.
4111-0021 — May 2015
Make sure the platform is properly supported in the
raised position before entering the pit to finish weld
the shims. Failure to do this may result in serious
personal injury or death.
15
INSTALLATION
Install Control Panel and Wiring
A
The electrical power must be OFF prior to electrical
installation. For maximum protection, use an OSHA
approved locking device to lock out all power
sources. Only the person installing the equipment
should have the key to unlock the power source.
Failure to follow these instructions may result in
serious personal injury or death.
D
B
C
DO NOT make any final electrical connections until
all welding has been completed. Failure to do this
may result in serious personal injury or death.
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.
A— Disconnect Panel (provided by others)
B— Control Panel
C— Distance, 48 in. (14 630 mm)
D— Placard
1. Mount the push button control panel (B) so bottom
of control panel-to-dock floor distance (C) is 48 in.
(1219.2 mm).
2. Install electrical disconnect panel (A) if not already
installed.
3. Install and connect the control wiring.
4. Re-install the air bag, air bag support pallet and
blower motor.
5. Connect the dock leveler power cable to the outlet
in the pit junction box. Refer to the electrical
drawings supplied with the dock leveler.
6. After all electrical connections in the pit have
been made, raise the leveler, disengage the
maintenance prop and allow the platform to lower
7. Install the Placard(s) (D), in close proximity to the
control box and in plain sight.
16
4111-0021 — May 2015
INSTALLATION
Put New Dock Leveler Into Service
1. Disconnect the external lifting device and chains
from the lifting brackets.
2. Check that the leveler is flush with the dock floor
and that the platform lip contacts both lip keepers
evenly.
If an excessive transition exists between the dock
floor and leveler and/or lip does not contact both
lip keepers evenly, contact Technical Services for
further instructions.
7. When the platform lowers to the full below-dock
position, the lip will fold. Depress and hold the
RAISE button until the platform rises just enough
to clear the lip keepers, then release the RAISE
button to allow the platform to lower to the crosstraffic (stored) position (lip engages lip keepers).
8. Perform steps 5 – 7 at least four times make sure
the leveler functions properly and there is no
binding.
3. Install the dock bumpers as required.
4. Turn the main electrical power ON.
5. Raise the leveler platform fully by depressing and
holding the RAISE button .
6. Release the RAISE button to lower the platform.
As long as there is no transport vehicle present at
the dock, the platform will lower to the full belowdock position as the lip folds.
NOTE: If a transport vehicle is present, the
platform will lower until the lip rests on the
transport vehicle bed. (See Operating Instructions
in Operation section.)
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.
9. Raise the platform fully. Hold the platform at this
position using the RAISE button and move the
maintenance prop to the service (upright) position.
Release the RAISE button to allow the platform to
lower until it is resting on the maintenance prop.
10. With the maintenance prop supporting the platform,
remove the lifting brackets
11. Support the toe guards, remove the cotter pin
used in shipping and carefully release the toe
guards.
When drilling access hole in the control box, DO
NOT penetrate too deep, components may be
damaged.
DO NOT turn control upside down to drill any
access holes. To prevent damaged to electrical
components from debris cover components prior to
drilling
Seal all conduit entrances to prevent moisture from
entering the control box.
12. Depress and hold the RAISE button until the
maintenance prop drops to its stored position.
Release the RAISE button and allow the platform
to lower fully. Check operation of toe-guards.
13. When the platform lowers to the full below-dock
position, the lip will fold. Depress and hold the
RAISE button until the platform rises just enough
to clear the lip keepers, then release the RAISE
button to allow the platform to lower to the crosstraffic (stored) position (lip engages lip keepers).
DO NOT use compressed air to clean control box.
Recommended to vacuum debris from inside.
Always stand clear of platform lip when working in
front of the dock leveler. Serious personal injury or
death may result.
4111-0021 — May 2015
17
OPERATION
Operating Instructions
Stay clear of dock leveler when transport vehicle
carrier is entering or leaving dock area.
12in. (305mm)
DO NOT move or use the dock leveler if anyone is
under or in front of leveler.
Keep hands and feet clear of pinch points. Avoid
putting any part of your body near moving parts.
Failure to follow these instructions may result in
severe personal injury or death.
Only trained personnel should operate the dock
leveler.
DO NOT use a broken or damaged dock leveler.
Make sure proper service and maintenance
procedures have been performed on leveler before
using.
transport vehicle wheels must be chocked unless
the vehicle restraint is used. Never remove the
wheel chocks until loading/unloading is finished
and transport vehicle driver has been given
permission to leave.
Make sure platform lip rests on the transport
vehicle bed with at least 4 in. (102 mm) of overlap.
Maintain a safe distance from side edges of leveler
during the loading/unloading process.
Failure to follow these instructions may result in
serious personal injury or death.
18
12in. (305mm)
The MA pneumatic dock leveler is designed to
compensate for a maximum ± 12 in.* (305 mm) of
height difference between the loading dock and
the transport vehicle bed. DO NOT use the dock
leveler if the transport vehicle bed is more than 12
in. (305 mm) higher or lower than the dock floor.
*service height may vary with design specifications
DO NOT overload the dock leveler.
DO NOT operate any equipment while under the
influence of alcohol or drugs.
DO NOT leave equipment or material unattended
on the dock leveler.
Failure to follow these instructions may result in
personal injury and/or damage to equipment.
The dock leveler operating instructions are divided
into the two methods of loading and unloading:
•
For ramp loading and unloading, see Ramp
Loading/Unloading Instructions on page 19.
•For end loading and unloading, see End Loading/
Unloading Instructions on page 20.
4111-0021 — May 2015
OPERATION
Operating Instructions—Continued
Below Dock Loading/Unloading Instructions
Ramp Loading/Unloading Instructions
NOTE: If end unloading is required, see End Loading/
Unloading Instructions on page 20.
NOTE:If end unloading is required, see End Loading/
Unloading Instructions on page 20.
7. Check to make sure transport vehicle is positioned
squarely against dock bumpers.
For ramp loading or unloading, the MA dock
leveler can be operated by using the RAISE
button on the control panel.
8. Instruct driver to remain at the dock until the
loading or unloading process has been completed.
1. Check to make sure transport vehicle is positioned
squarely against dock bumpers.
9. Chock the transport vehicle wheels or use vehicle
restraint if present.
2. Instruct driver to remain at the dock until the
loading or unloading process has been completed.
10.Raise the platform by depressing the raise button
(A) to fully raise the leveler and extend the lip.
3. Chock the transport vehicle wheels or use vehicle
restraint if available.
11.Walk out on the leveler, Pull and Hold the release
ring (see picture below) until the platform lowers
onto the transport vehicle. Make sure there is a
minimum of 4” of lip overlapping the transport
vehicle bed.
A
A-RAISE Button
4. Extend the platform lip onto transport vehicle as
follows:
a. Raise the platform by depressing and holding
RAISE button .
b. Hold the RAISE button until the lip is fully
extended, then release the RAISE button. The
platform will lower until the lip is resting on the
transport vehicle bed.
c. Make sure that the lip is fully extended and
supported on the transport vehicle along the
entire width of the platform with at least 4 in.
(102 mm) of lip contacting the transport bed.
Loading/Unloading Completed - Reset Leveler
A
A—RAISE Button
12.When loading or unloading is finished, raise the
platform by depressing and holding RAISE button
(A) .
13.Hold the RAISE button until the lip folds enough to
clear the transport vehicle bed, then release the
RAISE button. The lip will fold and the platform will
return to the cross-traffic position.
5. Proceed with loading or unloading the transport
vehicle.
6. If below dock loading is necessary, see steps 7-11.
If not, proceed to step 12. Unloading Instructions
on page 20.
4111-0021 — May 2015
14.Remove chocks from transport vehicle wheels or
release the vehicle restraint if used.
15.Indicate to driver that transport vehicle may leave
the dock.
19
OPERATION
Operating Instructions—Continued
End Loading/Unloading Instructions
NOTE: If ramp loading is required, see Ramp Loading/
Unloading Instructions on page 19.
End loading or unloading can be done with the
dock at the cross-traffic position or below‑dock
position, depending on the height of the
transport vehicle bed.
1. Check to make sure transport vehicle is positioned
squarely against dock bumpers.
2. Instruct driver to remain at the dock until the
loading or unloading process has been completed.
3. Chock the transport vehicle wheels or use vehicle
restraint if available.
6. Depress the Raise button to the platform high
enough to clear the lip keepers, but not high
enough to extend the lip.
7. Walk out on the leveler, pull and hold the safety
leg retract pull ring (B) (located in the recess at
the front of the platform). This will cause the lip to
extend away from the lip keepers and the cross
traffic safety legs to fold to allow the leveler to
lower to the below dock position.
8. When the platform lip clears the lip keepers,
continue to hold the pull chain as the leveler
lowers to the below-dock service position. The
platform will drift down to the full below-dock
position.
9. Proceed with loading or unloading.
End Loading/Unloading — Platform at Cross-Traffic Position.
4. If transport vehicle bed is at or above dock floor
level, leave leveler at the cross-traffic position and
proceed with loading or unloading.
NOTE: When end unloading is finished and access to
the rest of the transport vehicle is still required,
the platform lip will need to be extended.
See Ramp Loading/Unloading Instructions on
page 19 for further instructions.
10. When the loading or unloading is finished, return
the dock leveler platform to the cross‑traffic
(stored) position.
End Loading/Unloading — Platform Too High
Use Below-Dock Position.
5. If transport vehicle bed is below the dock floor
level, perform steps 6 –12.
11. Depress the Raise button (B) until the lip clears
the lip keepers. Release Raise button, leveler will
return to the stored or cross traffic position.
12. Remove chocks from transport vehicle wheels or
release the vehicle restraint if used.
13. Indicate to the driver that the transport vehicle
may leave the dock.
End Loading/Unloading — Platform at Below-Dock Position.
20
4111-0021 — May 2015
MAINTENANCE
Service Dock Leveler Safely
E
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop. Failure to do this may result in
serious personal injury or death.
Always stand clear of the dock leveler lip when
working in front of the dock leveler.
The maintenance prop MUST be in the service
position when working under the dock leveler.
For maximum protection, use an OSHA approved
locking device to lock the maintenance prop in
the service position. Only the person servicing
the equipment should have the key to unlock the
maintenance prop.
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.
Failure to follow these instructions may result in
serious personal injury or death.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete. Failure to do this may
result in serious personal injury or death.
Whenever performing maintenance under the
dock leveler platform, support the platform with the
maintenance prop (A). Position the maintenance prop
behind front header plate (E) while staying clear of the
lip. The Lip Prop may be used to keep the lip extended
(D). Additional supports should be used to prevent the
lip from collapsing if working under the leveler. Lock
the maintenance prop in the service (upright) position
using an OSHA approved lockout device* (C) and
tagout device (B).
Whenever servicing the dock leveler, lock the electrical
power disconnect in the OFF position. Use only an
OSHA approved lockout/tagout device* (C) and tagout
device (B).
Only the person servicing the equipment should have
the capability to remove the lockout/tagout devices.
The Tag out devices* must inform that repairs are in
process and clearly state who is responsible for the
lockout condition.
* Refer to OSHA regulation 1910.146
* Refer to OSHA regulation 1910.147
4111-0021 — May 2015
21
MAINTENANCE
Periodic Maintenance
A
F
C
B
A
G
C
C
A— Lip Hinge Area
B— Platform hinge area
C— Lip prop pivot
D— Lip link pivots
Under platform service
22
E— Safety leg pivots
F— Lip Linkage Pivot
G — Safety leg linkage
pivots
Air Filter, service under rear of platform
4111-0021 — May 2015
MAINTENANCE
Quarterly Maintenance
Regular maintenance must be performed on a weekly
and quarterly schedule.
FOLLOW ALL SAFETY PRECAUTIONS
Weekly Maintenance
•Lubricate the following areas with white lithium
grease:
•Operate the dock leveler through the complete
operating cycle to maintain lubrication.
(B)— Lip link pivots
(A)— Lip prop pivot
NOTE: To thoroughly inspect the platform hinge
area, put the platform in the full below‑dock­­­­­­­­­­­­­­­­­­­­­­
position.
(C)— Safety leg linkage pivots
•Inspect the platform hinge and the lip hinge areas.
The hinge areas must be kept free of dirt and
debris. Build-up of foreign material in the hinge
areas will cause abnormal operation.
(E)— Safety leg linkage pivots
•Inspect the area under the platform, around and
under the air bag. Build-up of foreign material
in this area may damage air bag components,
causing abnormal operation.
(F)— Lip hinge area (inject grease into all the lip
hinge grease fittings)
•
Inspect air bag and seams for signs of wear or
damage.
(D)— Lip latch pivots
• Inject white lithium grease in the flowing grease
zerks:
(G)— Platform hinge area (inject grease into all the
platform hinge grease fittings)
(F)— Lip assist pin
NOTICE
Failure to properly lubricate the dock leveler will
cause abnormal operation of the leveler.
A maintenance prop permanently attached and
hinged to the unit with means for lock out/tag out
requirements (per OSHA 1910.147) is included
with each pit style dock leveler. In addition, 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 not limited to a boom truck, fork truck,
stabilizing bar or equivalent.
4111-0021 — May 2015
23
ADJUSTMENTS
Adjusting the Latch and Lip Actuator Spring Tension
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop. Failure to do this may result in
serious personal injury or death.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete. Failure to do this may
result in serious personal injury or death.
B
Always stand clear of the dock leveler lip when
working in front of the dock leveler.
The maintenance prop and lip maintenance prop
MUST be in the service position when working
under the dock leveler. For maximum protection,
use an OSHA approved locking device to lock the
maintenance prop in the service position. Only the
person servicing the equipment should have the
key to unlock the maintenance prop.
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.
A
A— Lip Latch Spring
Adjustment
B— Lip Assist Spring
Adjustment
Failure to follow these instructions may result in
serious personal injury or death.
24
4111-0021 — May 2015
ADJUSTMENTS
Adjusting Lip Latch Spring Tension
Adjusting Lip Assist Spring Tension
This adjustment is set at the factory and should not
require additional adjustment.
This adjustment is set at the factory and should not
require additional adjustment.
Unlike mechanical levelers, the lip will not
immediately begin to fold as the platform returns to
the stored position.
Unlike mechanical levelers, the lip will not
immediately begin to fold as the platform returns to
the stored position.
After the platform is fully raised, and the lip extends,
the lip latch is designed to hold the lip in the
extended position until the platform drifts down to the
below dock position.
The MA leveler lip remains extended as the platform
drifts down to the below dock position. The lip will
automatically fold when the platform when the dock is
resting on the safety legs in the below dock position.
If the lip does not remain extended as the platform
lowers, additional spring tension may be required.
If the lip does not fully extend additional spring
tension may be needed.
NOTE: Use half-turn increments when adjusting lip
assist spring. Check lip operation after each
adjustment. Repeat until proper operation is
obtained.
NOTE: Use two-turn increments when adjusting lip
assist spring. Check lip operation after each
adjustment. Repeat until proper operation is
obtained.
Adjust spring tension as follows:
a. Loosen jam nut (A).
Adjust spring tension as follows:
a. Loosen jam nut (B).
b.To increase spring tension, turn nut (A) counter
clockwise.
b.To increase spring tension, turn nut (B)
clockwise.
c.To decrease spring tension, turn nut (A)
clockwise.
c.To decrease spring tension, turn nut (B)
counterclockwise.
d.Tighten jam nut.
d.Tighten jam nut.
echeck operation of platform and lip. Readjust lip
R
latch spring tension and lip assist spring tension until
proper operation is obtained.
echeck operation of platform and lip. Readjust
R
lift spring tension and lip assist spring tension until
proper operation is obtained.
4111-0021 — May 2015
25
ADJUSTMENTS
Adjust Lip Stop Bolt
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete. Failure to do this may
result in serious personal injury or death.
A
B
Always stand clear of the dock leveler lip when
working in front of the dock leveler. Failure to do
this may result in serious personal injury or death.
C
E
The platform maintenance prop MUST be in the
service position when working under the dock
leveler. For maximum protection, use an OSHA
approved locking device to lock the maintenance
prop in the service position. Only the person
servicing the equipment should have the key to
unlock the maintenance prop.
Failure to follow these instructions may result in
serious personal injury or death.
D
A— Platform Frame
B— Jam Nut
C— Stop Bolt
D — Lip Keeper
E — Lip
Check that lip (E) is fully resting on the lip keepers
(D) and at the lowest part of the keeper cradle. If
lip is not resting properly in keepers, perform the
following adjustment.
4. Tighten jam nut.(B)
1.Fully raise platform. Engage lip and maintenance
prop.
6.Allow platform to lower to cross-traffic (stored)
position.
2. Loosen jam nut (B).
7.Check lip position in both keepers. Repeat
procedure if necessary.
5. Fully raise platform and disengage lip and
maintenace prop.
3.Adjust stop bolt (C) as necessary.
•Turn stop bolt “in” (clockwise) to allow lip to
fold closer to platform frame (A).
•Turn stop bolt “out” (counterclockwise) to hold
lip further away from platform frame (A).
26
4111-0021 — May 2015
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4111-0021 — May 2015
27
TROUBLESHOOTING
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop. Failure to do this may result in
serious personal injury or death.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete. Failure to do this may
result in serious personal injury or death.
Always stand clear of the dock leveler lip when
working in front of the dock leveler.
The maintenance prop MUST be in the service
position when working under the dock leveler.
For maximum protection, use an OSHA approved
locking device to lock the maintenance prop in
the service position. Only the person servicing
the equipment should have the key to unlock the
maintenance prop.
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.
Failure to follow these instructions may result in
serious personal injury or death.
Before performing the detailed troubleshooting procedures, check the following items first:
•Check all fuses and circuit breakers. Replace any
blown fuse(s) with a fuse of equal specification and
reset cir.
•Make sure the correct voltages are present at the
proper locations inside the control panel(s).
Symptom
Possible Cause
Platform does not rise.
Motor fuse blown.
Motor does not energize.
Solution
Reset circuit panel or disconnect fuse. Determine
cause of overload.
Motor failure
Platform does not rise.
Incorrect voltage is present
Motor hums, but does not on line.
run.
Platform does not rise.
Line voltage too low.
Motor energizes, but does
not run.
28
Check voltage to motor.
•If voltage is present and motor does not energize,
replace motor.
•If voltage is not present, check all components in
series with the motor.
Check line for proper voltage
•If proper voltage is not present, check all
components in series with the motor.
•If proper voltage is present and motor does not
run, check for obstructions.
• If no obstructions are found, replace motor.
•Check wiring to motor for high resistance.
•Check for loose or corroded connections.
•Check if gauge of wires to motor are of correct
size and specification for load requirement.
Replace if necessary.
4111-0021 — May 2015
TROUBLESHOOTING
Symptom
Platform rises slowly
Possible Cause
Air bladder or connecting
ducts punctured
Solution
Check air bladder and ducting replace as needed
Damaged or restricted
ducting
Replace damaged ducting or remove restriction
Air intake clogged
Remove intake filter, clean or replace as needed
Dock leveler binding
Check for visible obstructions that could cause
binding. Remove obstructions. If no obstructions
found, call Technical Services. See inside back cover
for phone number and address.
Platform does not rise to See Platform Rises Slowly
full height.
See Platform Rises Slowly
See Periodic Maintenance in the Maintenance
section.
Platform DOES rise to
full height, but lip DOES
NOT extend or extend
fully.
Lip actuator spring needs
additional tension.
Inspect lip actuator chain, repair or replace as
needed.
Lip extends but does
not remain extended as
leveler drops.
Lip latch spring needs
additional tension.
See Adjustment Section: Lip Latch Spring.
•Increase tension as needed to keep latch
engaged.
•Clean any debris from lip latch area.
•Lubricate as instructed in maintenance section.
• Replace air bladder
Air bladder damaged
4111-0021 — May 2015
29
ELECTRICAL
30
4111-0021 — May 2015
PARTS
Controls
A
D
4 -1/2
C
11.8 FLA Amp Draw
B
2-7/8
3.00
O P E R AT I N G
! DANGER
•
•
•
•
•
E
•
•
•
•
•
•
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, ensure lip avoids contact with
transport vehicle sides and cargo. If lip does not lower to transport
vehicle bed, reposition transport vehicle.
Ensure the transport vehicle floor 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 by
the maintenance prop.
Disconnect power and follow proper lockout/tagout procedures for
the dock leveler before entering the dock leveler pit or doing any
repair or inspection under the dock leveler.
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD
RESULT IN DEATH OR OTHER SERIOUS INJURY.
Scan to view our owner’s/user’s
manuals online.
1. Grasp the captured operating handle and
raise to its full extended length. Then pull
handle toward you, rotating center plate
back past vertical.
RIVET
2. Actuate the leveler by pushing forward on
handle against the rivet rotating leveler
out onto transport vehicle. The leveler will
lower until lip is resting on the transport
vehicle.
3. Return handle to the stored position.
STORING LEVELER
1. Extend the handle to its full extended
length, then pull handle toward you until
lip just clears the bed of the transport
vehicle.
2. Slowly allow handle to come forward until
leveler is lowered to the stored position.
3. Return handle to the stored position.
NOTE: If transport vehicle departs before
leveler is stored, leveler will automatically
return to stored position.
•
1.800.643.5424
Remove any endloads while leveler is in
the stored position.
1751-0876 Rev A
Item
Quantity
Part Number
A
1
7141-0207
Push Button Controller,
B
1
1751-0725
Decal
C
1
1751-0477
Decal
D
1
1751-0736
Decal, Arc Flash
E
1
1751-0903
Placard
4111-0021 — May 2015
NORMAL OPERATION
BELOW DOCK ENDLOADING
www.DockSystemsInc.com
Call for additional placards, or manuals, or with questions
regarding proper use, maintenance, and repair of dock leveler.
NL, TS, MEDLF EDGE-OF-DOCK LEVELERS
Description
31
PARTS
U
Lip Activation Before 2012
I
H I
A
B
T
J
D C
U
I
S
F
G
V W X Y
E
R
Q
K
L
O
O
M
P
Item
A
B
C
D
E
F
G
H
I
J
K
L
M
O
P
Q
R
S
T
U
V
W
X
Y
32
Quantity
1
1
2
1
1
1
2
1
2
3
1
1
1
1
3
1
1
3
1
1
2
1
1
1
1
Part Number
9514-0107
DPLA-2130
DOTH-2404
DOTH-2076
DOTH-2160
DOTH-2546
DOTH-2225
DPLA-2126
DOTH-2061
DOTH-2131
5775-0004
0941-0013
DOTH-2555
DPLA-2128
2101-0217
2101-0216
DOTH-2421
DOTH-2214
DOTH-2547
DOTP-2006
DOTH-2062
DOTH-2351
DOTH-2163
DOTH-2210
DOTH-2374
Description
*
*
*
Lip Latch Assy.( bolts on to DPLA-2130)
Lip Assist Rod Complete 34” Lg (Includes Items A-D)
Bearing
Bolt, 5/8-11 unc x 3-1/2”
Nut,Nylon
Spring, Lip assist
Washer
Lip Banger
Bolt, Shoulder 1/2” x 1-1/2Lg.”
Nut, Nylon lock 3/8”
Lip latch Assembly
Lip Latch Rod Spring
Spring,Snubber
Chain, Snubber Spring
Quick Link
Quick Link
Cold Shut
Washer
Spring, Lip Maintenance
Prop, Lip Maintenance
Bolt, Shoulder
Bolt,Clevis
Nut, Locking 1/2”
Washer
Cotter Pin
4111-0021 — May 2015
PARTS
Lip Activation JAN 2012 and Newer
A
B
N
C
D E F G
M
J
K
F
L
R
I
H
P
O
P Q
Item
Quantity
A
1
B
1
C
1
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
4111-0021 — May 2015
Part Number
DLIP-0305
DOTH-2550
DOTH-2546
5775-0004
5775-0005
DOTH-2351
DOTH-2163
DOTH-2210
DOTH-2374
DPLA-0338
DPLA-0340
DOTH-2131
DOTH-2547
DOTH-2214
DOTH-2062
DOTP-2005
2101-0217
DPLA-2128
DOTH-2555
0941-0013
Description
Lip Assist Rod Complete 34” Lg.
Spring, Lip Assist STD
Spring,Lip Assist Heavy Duty
Lip latch Assembly 16” Long (3/2014 and older)
Lip latch Assembly 21” Long (4/2014 and newer)
Bolt,Clevis
Nut, Locking 1/2”
Washer
Cotter Pin
Lip Assist Linkage
Bar, Lip Linkage
Nut, Nylon Lock 3/8
Spring, Lip Prop
Washer
Bolt, Shoulder
Prop, Lip
Quick Link
Chain, Snubber
Spring, Snubber ( not shown)
Spring, Lip Latch
33
PARTS
This Page Intentionally Left Blank
34
4111-0021 — May 2015
PARTS
Airbag and Support Pallet
Item
Quantity
Part Number
1
3
5812-0045
Hold Down Rod, 45” long x 7/16” diameter
2
1
5811-0009
Air Bag Bladder
3
1
5811-0012
Skid, Air Bag Leveler
4
2
5813-0001
Skid BRKT, Air Bag Leveler, BM
5
4
2101-0098
Screw, HHCS, 5/16-18UNC x 1-1/2 long
6
4
2101-0214
Nut, Flange, Top L/N, 5/16 - 18UNC
7
4
2101-0058
Washer, Lock 5/16
8
6
2101-0224
Rod Clamps
9
4
2101-0079
Washer Flat 1/2 inch
10
2
2101-0230
Ring, Split 1.75 O.D
3-10
1
5814-0029
4111-0021 — May 2015
Description
Skid, Air Bag Leveler Assembly, Includes Items 3-10
35
PARTS
Frame and Platform
Lip latch Release Arm Up
Grade. Maybe required on
some levers (manufactured
before 4/2014) if below dock is
required
BILL OF MATERIAL
ITEM QTY PART NO.
DESCRIPTION
1
1 8432-1006 SNUBBER MOUNT AP SERIES
2
1 8432-1212 LIP LATCH RELEASE ARM
S
Y
S
T
SIZE
E M
S,
P O W E R A M P
D L M
I
N C.
L o a d i n g D o c k E q u i p m e n t
WLDT, LIP LATCH RELEASE, 2014
MATERIAL
DRAWN BY
KRV
TOLERANCES
(UNLESS OTHERWISE NOTED)
FRACTIONAL: 1/32"
DECIMAL:
.00 = .01"
.000 = .005"
CHECKED BY
DATE
3/5/2014
DRAWING NO.
8434-0821
ANGULAR: 1
This print is the property of Systems, Inc. and represents a proprietary article in which Systems, Inc. retains any and all
patent and other rights, including exclusive rights of use and/or manufacture and/or sale. Possession of this print does
not convey any permission to reproduce, print or manufacture the article or articles shown therein, such permission to be
granted only by written authorization signed by an officer or other authorized agent of Systems, Inc. thereof.
Item
Quantity
Part Number
1
2
3
4
1
1
1
2
5
2
6
7
8
9
1
1
1
1
1
1
1
1
8435-____1
7952-0001
0941-0013
2101-0217
8432-1129
8432-1130
8432-1131
DOTH-2555
DOTH-6439
DOTH-2421
9201-0006
9224-0030
9224-0031
9244-0079
2101-0216
10
11
Description
Frame, Welded Assembly
Cable A.C. Assembly 14.00 Final length
Spring Lip Latch Ext.
Link, Quick 1/4”
Keeper Lip 16 inch 20” pit
Keeper Lip 18 inch 20” pit
Keeper Lip 20 inch 20” pit
Spring, Snubber
Spring, Snubber and Chain Kit
Cold Shut
Prop Pin and Clip.
Maint. Prop 6 foot
Maint. Prop 8 foot
Maint. Prop 10 foot.
Link, Quick 1/8”
1 CONSULT FACTORY
36
4111-0021 — May 2015
PARTS
Frame and Platform
PLATFORMS1
6 FOOT
ITEM QTY
1
6.0 FOOT 6.5 FOOT 7.0 FOOT
8 FOOT
6.0 FOOT 6.5 FOOT
10 FOOT
7.0 FOOT
6.0 FOOT 6.5 FOOT 7.0 FOOT
1
25K 9515-5300 9515-5304 9515-5308 25K 9515-5312 9515-5316
9515-5320 25K 9515-5324 9515-5328 9515-5332
1
30K 9515-5301 9515-5305 9515-5309 30K 9515-5313 9515-5317
9515-5321 30K 9515-5325 9515-5329 9515-5333
1
35K 9515-5302 9515-5306 9515-5310 35K 9515-5314 9515-5318
9515-5322 35K 9515-5326 9515-5330 9515-5334
1
40K 9515-5303 9515-5307 9515-5311 40K 9515-5315 9515-5319
9515-5323 40K 9515-5327 9515-5331 9515-5335
1
45K 9515-5336 9515-5338 9515-5340 45K 9515-5342 9515-5344
9515-5346 45K 9515-5348 9515-5350 9515-5352
1
55K 9515-5337 9515-5339 9515-5341 55K 9515-5343 9515-5345
9515-5347 55K 9515-5349 9515-5351 9515-5353
consult factory
1
AR = As Required
1
2
Provide dock leveler serial number, platform size, and lip size when calling or faxing orders.
Provide length and width of inspection plate opening when calling or faxing orders.
* For left/right orientation of dock leveler, see inside back cover of this manual.
4111-0021 — May 2015
37
PARTS
2
1
DPLA-0338
LIP BANGER ASSY.
3
2
DPLA-0340
BAR
4
1
5775-0004
LIP LATCH ASSEMBLY
5
1
DOTH-2374
COTTER PIN
6
2
DOTH-2210
WASHER
7
1
DOTH-2351
BOLT/PIN
8
1
DOTH-2163
NUT, LOCK
9
1
DPLA-0360
BELOW DOCK CONTROL ASSY.
10
2
DOTH-2382
PIN, COTTER
11
1
DOTH-2074
BOLT, HEX 5/8-11 X 2.00
12
1
DOTH-2160
NUT, HEX 5/8-11
17
1
DPLA-0360
BDC PUSH ROD ASSY
18
1
DOTH-2060
BOLT SHOULDER
19
1
DOTH-2131
LOCK NUT 3/8-16
20
1
DLIP-0305
LIP ASSIST ROD ASSY. MA
23
1
DOTH-2550
SPRING ,LIP ASSIST STD 25K- 55K 6’ 6.5’ WD 16”
24
1
DOTH-2546
SPRING ,LIP ASSIST HEAVY 7’WD 18”-20” 25K-- 7’WD 18”-20:” 30K -55K
25
1
DOTP-2006
LIP PROP BAR
26
1
DOTH-2062
SHOULDER BOLT
27
1
OTH-2131
LOCK NUT
28
2
OTH-2214
WASHER
29
1
DOTH-2547
SPRING COMPRESSION
35
LIP SHAFTS
2
6.0 FOOT
DPLA-2101
2
6.5 FOOT
DPLA-2102
2
7.0 FOOT
DPLA-2103
36
2
DOTH-2355
PIN , CLEVIS
37
2
DOTH-2373
PIN, COTTER
39
2
2101-0079
WASHER, FLAT
LIPS
38
25K
30K
35K
40/45K
55K
1
6.0 FOOT
16
0595-5300
0595-5309
0595-5318
0595-5327
0595-5336
1
18
0595-5301
0595-5310
0595-5319
0595-5328
0595-5337
1
20
0595-5302
0595-5311
0595-5320
0595-5329
0595-5338
6.5 FOOT
1
16
0595-5303
0595-5312
0595-5321
0595-5330
0595-5339
1
18
0595-5304
0595-5313
0595-5322
0595-5331
0595-5340
20
0595-5305
0595-5314
0595-5323
0595-5332
0595-5341
1
7.0 FOOT
38
1
16
0595-5306
0595-5315
0595-5324
0595-5333
0595-5342
1
18
0595-5307
0595-5316
0595-5325
0595-5334
0595-5343
1
20
0595-5308
0595-5317
0595-5326
0595-5335
0595-5344
4111-0021 — May 2015
PARTS
Toe Guard/Weather Seal—Optional
E
Weather Seal Kits
D
Item
Quantity
Part Number
A
B
1
1
0195-0021
0195-0033
C
Description
Brush Kit Includes Seal and Track, 1-1/2 in. 82" Lg. (Both Sides)
Rubber Kit Includes Seal and Track, 1-1/2 in. 82" Lg. (Both Sides)
Individual Replacement Seals
Item
Quantity
Part Number
C
D
E
1
1
1
0192-0098
0192-0085
0192-0146
Description
Brush Refill, 1-1/2 in. 82" Lg.
Rubber Refill, 1-1/2 in. 82" Lg.
Replacement Channel
5
5
5
6
7
6 FOOT
8 FOOT
10 FOOT
2
1
0014-0140
TOE GUARD LH, RH Lower
0014-0143
TOE GUARD LH,RH Lower
0014-0146
TOE GUARD LH, RH Lower
3
1
0014-0141
TOE GUARD RH Middle
0014-0144
TOE GUARD RH Middle
0014-0147
TOE GUARD RH Middle
4
1
0014-0142
TOE GUARD LH Middle
0014-0145
TOE GUARD LH Middle
0014-0148
5
2
OTH-2043
SCREW CAP
SAME
SAME
6
4
OTH-2207
WASHER
SAME
SAME
7
2
OTH-2131
LOCK NUT
SAME
SAME
4111-0021 — May 2015
TOE GUARD LH Middle
39
PARTS
Motor and Blower Assembly
F
H
D
A
B
D
C
E
Item
Quantity
Part Number
Description
A
1
9395-0359
B
1
9391-0021
Filter Element (Included With 9395-0359)
9391-0022
Tube, 2” (50.8mm) OD, 36” (914.4mm) Length 6’ and 8’ Levelers
9391-0041
Tube, 2” (50.8mm) OD, 46” (914.4mm) Length 10’ levelers
9392-0047
Pipe, PVC, 1-1/2” SCH40 X 24” (38.1 X 609.6mm)
9392-0068
Pipe, PVC, 1-1/2” SCH40 X 24” (38.1 X 609.6mm) With 90Deg Elbow
PPAC,Blower Assy C
1
D
1
E
4
9391-0023
Clamp, Tube
F
2
2101-0143
Nut, Hex, Nylon Locking, 1/4-2
G
2
2101-0007
Screw, Cap, Hex, 1/4-2 X 1 LG
H
4
2101-0005
Washer, Flat 1/4”
40
4111-0021 — May 2015
MISCELLANEOUS
Customer Information
A
NOTE: Refer to illustration for left/right orientation of
dock leveler.
Air Bag serial number
on left hand corner
next to blower motor.
The model/serial number decal (A) is located
on the right platform joist near the front (lip)
of dock leveler.
When you receive your MA-Series dock leveler, write
down the dock leveler model and serial number in
the form provided. This will help ensure safe keeping
of the numbers in the event the model/serial number
decal (A) becomes lost or damaged.
Also, write down McGuire’s job number, the company
that installed the dock leveler, and the original
owner’s name. This will all help to identify the specific
dock leveler if more information is required.
When ordering, use part numbers and description
to help identify the item ordered. Do not use “item”
numbers. These are only for locating the position of
the parts. Always give dock leveler MODEL NUMBER
and/or SERIAL NUMBER.
For service, call or contact:
McGUIRE
P.O. Box 309
Germantown, WI 53022
Phone:(800) 624-8473
Fax: (262) 255-5917
E-mail: [email protected]
4111-0021 — May 2015
Dock Leveler Information
Model ___________________________________
Serial No. ________________________________
Systems, Inc., Job No. ______________________
Original Owner Information
Name ___________________________________
Address _________________________________
________________________________
Installer Information
Name ___________________________________
Address _________________________________
_________________________________
Date of Installation ________________________
41
STANDARD PRODUCT WARRANTY
SYSTEMS, INC. warrants that its products will be free from defects in design, materials and
workmanship for a period of one (1) year from the date of shipment. All claims for breach of
this warranty must be made within 30 days after the defect is or can with reasonable care, be
detected. In no event shall any claim be made more than 30 days after this warranty has expired.
In order to be entitled to the benefits of this warranty, the product 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.
In the event of a defect, as determined by SYSTEMS INC., covered by this warranty,
SYSTEMS INC. shall remedy such defect by repairing or replacing any defective equipment
or parts, bearing the cost for the parts, labor and transportation. This shall be exclusive
remedy for all claims whether based on contract, negligence or strict liability.
WARRANTY LIMITATIONS
THE ABOVE WARRANTIES ARE IN LIEU OF ANY OTHER WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SYSTEMS INC.
AND ITS SUBSIDARIES SHALL NOT IN ANY EVENT BE LIABLE TO ANYONE, INCLUDING
THIRD PARTIES, FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES OF
ANY KIND INCLUDING BUT NOT LIMITED TO, BREACH OF WARRANTY, LOSS OF USE,
LOSS OF PROFIT, INTERUPTION OF BUSINESS OR LOSS OF GOODWILL.
PRODUCT SPECIFIC WARRANTY
“MA” SERIES LEVELER
In addition to the “Standard Product Warranty” provided with all McGuire Products,
guarantees materials, components and workmanship to be free of defects for the following
extended periods:
•
Structural Warranty – For a period of five (5) years from the date of shipment, product
will carry a prorated structural warranty. This warranty specifically applies to; the deck section,
lip section, frame, rear hinge assembly and front hinge assembly only. This warranty covers
structural repairs to or replacement of dock leveler in McGuire sole discretion and expense
including reasonable labor, materials, freight and travel. If McGuire determines replacement
is necessary, it will provide the original purchaser with a credit toward the purchase of the
new replacement McGuire product in the amount equal to the original purchase price of the
warranted product F.O.B. point of manufacture, discounted on a ten year straight line basis
by the number of years of use prior to replacement.
•
Pneumatic Warranty – For a period of four (4) years from the expiration of the Standard
Product Warranty,McGuire will provide replacement component parts from defective lifting
system. This warranty specifically covers material and freight only and applies to; the air
bladder, seals, hoses and motor assembly.
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