Dura-Dock Dock Lift
Owner’s Manual
(DDL 5-59M, DDL6-59M & DL8-59M)
Model:
Serial Number:
Date placed in
service:
SOUTHWORTH PRODUCTS CORP.
P.O. Box 1380, Portland, ME 04104-1380
Telephone: 800-743-1000 • 207-878-0700
Fax: 207-797-4734
www.SouthworthProducts.com
Southworth Products DDL Dock Lift ManualFebruary 19, 2019
Contents
1 Introduction .................................................................................................................................... 4
1.1 Responsibilities of Owner and Users.................................................................................. 4
1.2 Responsibilities of Operators .............................................................................................. 5
2 Safety .............................................................................................................................................. 6
2.1 Safety Alert Symbols ............................................................................................................ 7
2.2 Signal Words ......................................................................................................................... 7
2.3 Safety Devices ....................................................................................................................... 7
3 Labeling .......................................................................................................................................... 7
3.1 Label Location Diagram ....................................................................................................... 8
4 Installation...................................................................................................................................... 9
4.1 External Power Unit .............................................................................................................. 9
4.2 Pit Installation........................................................................................................................ 9
4.3 Typical Pit Plan .................................................................................................................... 10
4.4 Recommended Pad Plan .....................................................................................................11
4.5 Alternative Pad Plan ........................................................................................................... 12
4.6 General Installation ............................................................................................................. 13
5 Operation...................................................................................................................................... 14
5.1 Loading ................................................................................................................................ 15
6 Maintenance & Repair ................................................................................................................. 15
6.1 Maintenance Devices .......................................................................................................... 16
6.2 Periodic Maintenance ......................................................................................................... 17
6.2.1 Weekly Maintenance ................................................................................................... 17
6.2.2 Monthly Maintenance ................................................................................................. 17
6.2.3 Six Months................................................................................................................... 17
6.3 Relieving Hydraulic Pressure ............................................................................................ 18
6.4 Replacement Parts .............................................................................................................. 19
7 Troubleshooting .......................................................................................................................... 19
8 Electrical Information .................................................................................................................. 21
8.1 Wiring Schematic ................................................................................................................ 21
8.2 Control Panel ....................................................................................................................... 22
9 Hydraulic Information ................................................................................................................. 23
9.1 Hydraulic Fluid Specications ........................................................................................... 23
9.2 Hydraulic Schematic ........................................................................................................... 23
9.3 Hydraulic Power Unit .......................................................................................................... 23
9.4 Hose Specications ............................................................................................................ 23
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9.5 Hydraulic Arrangements .................................................................................................... 24
9.5.1 Standard Hydraulic Arrangement ............................................................................. 24
9.5.2 Alternative Hydraulic Arrangement .......................................................................... 24
10 Warranty & Contact Information .............................................................................................. 25
This label (Part No. 10095524) is required by California law.
For more information visit: www.P65Warnings.ca.gov
This lift is design and manufactured in accordance with
ANSI standard MH29.1 – “The Safety Requirements for
Industrial Scissors Lifts”.
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1. Introduction
1.1 Responsibilities of Owner and Users
Basic Principles - Owners/users shall apply sound principles of safety, training, inspection,
maintenance, and expected operating environment. It shall be the responsibility of the owner/user
to advise the manufacturer where deection may be critical to the application.
Manuals - Owners/users shall keep and maintain a copy of the operating and maintenance
manual(s) and ensure its availability to operating and maintenance personnel.
Inspection and Maintenance - It shall be the responsibility of the users to inspect and maintain
the industrial scissors lift as required to ensure proper operation. The frequency of inspection
and maintenance shall be based upon the manufacturer’s recommendations and be compatible
with operating conditions and the severity of the operating environment. Machinery that is not in
proper operating condition shall be immediately removed from service until repaired. Maintenance
and repairs shall be made by a qualied person and the repairs shall be in conformance with the
manufacturer’s recommendations.
Maintenance Safety Precautions - Before adjustments and repairs are started on the machine,
the following precautions shall be taken as applicable:
1. Remove the load from the load enclosure.
2. Lower the platform to the full down position.
3. Relieve system pressure from all circuits before loosening or removing any components.
4. All controls in the “off’ position and all operating features secured from inadvertent motion
by brakes, blocks, or other means.
5. Disconnect power and follow established owner/user lockout/tag out policies.
6. Follow precautions and directions as specied by the manufacturer.
Replacement Parts - When parts or components are replaced, they shall be replaced with parts
or components approved by the original manufacturer.
Maintenance Training - The user shall ensure only qualied personnel inspect and maintain the
machine in accordance with the manufacturers recommendations.
Operator Training - An owner/user, who directs or authorizes an individual to operate the
machine shall ensure that the individual has been:
1. Trained in accordance with the manufacturer’s operating manual.
2. Made aware of the responsibilities of operators as outlined in section 1.4 of this manual.
3. Retrained, if necessary, based on the owners/user’s observation and evaluation of the
operator.
Modications and additions shall not be performed without the manufacturer’s prior written
approval. Where such authorization is granted, capacity, operation, and maintenance instruction
plates, tags, or decals shall be changed accordingly.
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1.2 Responsibilities of Operators
Basic Principles - Operators shall apply sound principles of safety and good judgment in
the application and operation of the machine with consideration given to its intended use
and expected operating environment. Since the operator is in direct control of the machine,
conformance with good safety practices is the responsibility of the operator. The operator shall
make decisions on the use and operation with due consideration for the fact that his or her own
safety as well as the safety of other personnel on or near the machine is dependent on those
decisions.
1. General Training - Only personnel who have received general instructions regarding the
inspection, application and operation of machine, including recognition and avoidance of
hazards associated with their operation, shall operate the machine. Such topics covered
shall include, but not necessarily be limited to, the following issues and requirements:
2. A pre-start inspection
3. Responsibilities associated with problems or malfunctions affecting the operation of the
machine.
4. Factors affecting stability
5. The purpose of placards and decals
6. Workplace inspection
7. Safety rules and regulations
8. Authorization to operate
9. Operator warnings and instructions
10. Actual operation of the machine. Under the direction of a qualied person, the trainee shall
operate the machine for a sufcient period of time to demonstrate prociency in actual
operation of the machine.
Pre-start Inspection - Before use each day or at the beginning of each shift, the machine shall
be given a visual inspection and functional test including but not limited to the following:
1. Operating and emergency controls
2. Safety devices
3. Hydraulic system leaks
4. Electrical cables and wiring harness
5. Loose or missing parts
6. Nameplates, precautionary and instructional markings and/or labeling
7. Guarding system
8. Items specied by the manufacturer
Problem or Malfunctions - Any problems or malfunctions that affect the safety of operations shall
be repaired prior to the use of the machine.
Before Operations - The operator shall:
1. Read and understand the manufacturer’s operating instruction(s) and user’s safety rules or
have them explained
2. Understand all labels, warnings, and instructions displayed on the machine or have them
explained.
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Workplace Inspections - Before the machine is used and during use, the operator shall check
the area in which the machine is to be used for possible hazards such as, but not limited to:
1. Bumps, oor obstructions and uneven surfaces
2. Overhead obstructions and electrical hazards
3. Presence of unauthorized persons
4. Other possible unsafe conditions as noted in the operating manual.
Operator Warnings and Instructions - The operator shall ensure the operation of the machine
is in compliance with the following:
Guarding system - Guarding shall be installed and positioned, and access gates or openings
shall be secured per the manufacturer’s instructions.
Distribution of load - The load and its distribution on the platform shall be in accordance with the
manufacturer’s rated capacity for that specic conguration.
Maintaining overhead clearance - The operator shall ensure that adequate clearance is
maintained from overhead obstructions and energized electrical conductors and parts.
Point of Operation - The operator shall not place any part of their body under the platform.
Precaution for moving equipment - When other moving equipment or vehicles are present,
special precautions shall be taken to comply with the safety standards established for the
workplace.
Reporting problems or malfunctions - The operator shall immediately report to a supervisor
any problem(s) or malfunction(s) that become evident during operation. The operator shall ensure
all problems and malfunctions that affect the safety of operations are repaired prior to continued
use.
Capacity limitation - Rated capacity shall not be exceeded when loads are transferred to the
load enclosure.
Work area - The operator shall ensure the area surrounding the machine is clear of personnel
and equipment before lowering the load enclosure.
Securing the machine - The operator shall comply with the means and procedures provided to
protect against use by an unauthorized person(s).
Altering safety devices - Safety devices shall not be altered or disabled.
Modications or alterations of the machine or the fabrication and attaching of frameworks or the
mounting of attachments to the machine or the guarding system shall only be accomplished with
prior written permission of the manufacturer.
Assistance to the operator - If an operator encounters any suspected malfunction or any hazard
or potentially unsafe condition relating to capacity, intended use or safe operation the operator
shall cease operation of the machine and request further instruction from the owner/user.
Problems or malfunctions - Any problem(s) or malfunction(s) that affect the safety of operations
shall be repaired prior to the use of the machine.
2. Safety
All personnel installing, operating, and maintaining this machine shall read and understand this
manual. For questions or concerns contact the manufacturer.
This machine shall be installed, operated, and maintained by trained and/or qualied personnel
only.
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2.1 Safety Alert Symbols
A BCD
A symbol that indicates a hazard. It is composed of an equilateral triangle surrounding an
exclamation mark. The safety alert symbol is only used on hazard alerting signs. It is not used on
safety notice and safety instructions signs.
A – For use with DANGER signal word; (safety white triangle, safety red exclamation mark, safety
red background)
B – For use with WARNING signal word; (safety black triangle, safety orange exclamation mark)
C – For use with CAUTION signal word; (safety black triangle, safety yellow exclamation mark)
D – For use with DANGER, WARNING, or CAUTION signal words; (safety yellow triangle with a
safety black border and safety black exclamation mark
2.2 Signal Words
Indicates a hazardous situation that, if not avoided, will result in death
or serious injury.
Indicates a hazardous situation that, if not avoided, could result in
death or serious injury.
Indicates a hazardous situation that, if not avoided, could result in
minor or moderate injury.
Indicates information considered important, but not hazard-related
(e.g., messages relating to property damage).
2.3 Safety Devices
This machine is equipped with devices and features to protect the operator and nearby personnel
from severe injury or death. These features and devices shall be installed and functioning
correctly during operation.
This machine is equipped with beveled toe guards on the platform, which meet the requirements
of ANSI MH 29.1 and requirements for pit installation.
3. Labeling
This machine has labeling to indicate potential hazards this machine may pose when operating
and/or maintaining the machine. All labels must be legible. If any label is missing, damaged, or
otherwise illegible contact the manufacturer for replacement labels.
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3.1 Label Location Diagram
BK-LD TAG SOUTHWORTH
5900158
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4. Installation
Installation of this machine shall be performed by trained and/ or qualied personnel
only. The owner/ installer is responsible obtaining any necessary permissions and/ or
permits. Follow all applicable codes and ordinances. Read and understand all safety and
installation information in this manual.
Before installation, remove all shipping materials and verify all components on the packing
list were received. Inspect the machine, all components, wiring and electrical connections,
hydraulic hoses and ttings for damage. If components are missing or damage is found contact
the manufacturer before continuing installation. If not being installed in a pit see Typical and
Alternative Pad Plan sections
To avoid death or serious injury:
• Pinch points and Crush Hazards exist when moving and transporting the machine.
Do not enter under any equipment while moving or transport. Keep hands, feet, and
loose clothing away from moving equipment.
• This machine must be installed on a solid, stable, level surface or machine will be
unstable and can lead to injury. Do not install on asphalt or other unstable surface.
• Never enter beneath the platform unless the machine is unloaded and secured
against lowering using the maintenance device. See Maintenance Devices section.
Use appropriate lifting device to lift the machine. Use a load spreader
to lift the machine. Lift the machine using the provided lifting eye-bolts
only. Do not lift the machine by the platform.
This machine must be properly secured to the oor/ ground before
operation or the machine may be damaged.
High Voltage: Electrical service and installation must be performed by
trained and/ or qualied personnel. Lock-out/ tag-out the power source
before installation.
Electric motors create sparks. Do not install the power unit in an area
where ammable gases may be present.
4.1 External Power Unit
External power units should be placed within thirty feet (hose length) of the machine to avoid
excess pressure drops. External power units must be protected from moisture and weather.
4.2 Pit Installation
Do not install this machine in a pit unless the machine has been
designed for such installation. Shear points exist and can cause severe
injury.
Platforms traveling below oor level may require guarding in
accordance with ANSI MH 29.1. Guarding must be installed before
operation.
This machine is equipped with beveled toe guards which meet the MH
29.1 guarding requirements.
1. Verify that the pit dimensions match the pit plan.
2. Verify that pit is clear of tools and other debris before lowering the machine into the pit.
3. Follow General Installation instructions to complete the installation.
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4.3 Typical Pit Plan
3" X 3" X 1/4" ANGLE BY
CONDUIT ENTRY CAN BE
IN PIT. (BY CONTRACTOR)
•
•
•
PIT CONTRACTOR. ALL
CORNERS TO BE
SECURELY WELDED. PIT
MUST BE SQUARE (
ACROSS CORNERS.
3/4" LAG HOLES
LAG WITH
SLEEVE ANCHORS
(BY INSTALLER)
PLATFORM
WIDTH
+1-1/2"
5/8" MIN.
FROM ANY DIRECTION
INCLUDING ENTRY FROM
1/2")
BOTTOM OF PIT SUMP.
COUPLINGS FOR
HYDRAULIC
CONNECTIONS
PLATFORM LENGTH + 1-1/2"
2" CONDUIT
1 1/2"
STEP REQUIRED FOR BRIDGE
PLATE HINGE CLEARANCE
BRIDGE
PLATE
WIDTH
+1/2"
BRIDGE PLATE
LENGTH + 1/2"
CROSS HATCHING INDICATES AREAS OF
BASE FROM THE MUST BE SHIMMED AND
OR GROUTED AFTER LEVELING OF THE
BASE FRAME TO ENSURE PROPER BASE
FRAME SUPPORT.
CONDUIT RUN IS REQUIRED FOR ROUTING
OF HYDRAULIC HOSES AND ELECTRICAL
WIRING UNLESS ALTERNATIVE
ARRANGEMENTS ARE REQUESTED.
2" ELECTRICAL CONDUIT USED WHEN 1/2"
HYDRAULIC HOSE, VENT LINE, AND
ELECTRICAL LEADS ARE TO BE INSTALLED
FROM POWER UNIT TO LIFT (BY PIT
CONTRACTOR).
CONCRETE ANCHORS TO
1/2" X 6" LOCATED
BE
12" O.C. WITH ONE 3"
FROM EACH END.
CONCRETE BEHIND CURB
ANGLES MUST BE WELL
COMPACTED WITH NO
VODIS
8" BOLLARDS
STEEL PIPE FILLED
WITH CONCRETE
(BY CONTRACTOR)
CENTER LINE OF
BOLLARDS TO BE
ALIGNED WITH
FRONT OF PIT
48"
1/2"
LOW
6"
3"
HEIGHT
+1/2"
36"
1/2" SHIM
UNDER EACH
LAG PLATE FOR
PROPER DRAINAGE
PIT DRAIN AS REQUIRED TO
PREVENT STANDING WATER
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4.4 Recommended Pad Plan
PIPE
96" PAD
NOTES:
ON PAD (BY CONTRACTOR)
Use of a sump/drain for proper drainage and a conduit run for hydraulic/ electrical routing
in pad is recommended. If no sump/drain and conduit run is provided see Alternative Pad
Plan .
FOR MODEL DDL5-59
WITH 72"X96" PLATFORM
7 1/2"
54"
BASE
72"
PAD
FRAME
57"
ANCHORS
7 1/2"
HINGE END OF BASE
86" BASE FRAME
CONDUIT ROUTE CAN BE
FROM ANY DIRECTION
INCLUDING FROM BOTTOM
OF PIT SUMP
COUPLINGS FOR
HYDRAULIC
CONNECTIONS
4X LAG WITH
(MINIMUM) SLEEVE
ANCHORS
5/8"
78" LAGS
12"
12"
2" CONDUIT
5"
6"
THROW OVER
PLATE AREA
ROLLER END
6"
CROSS HATCHING INDICATES AREAS OF •
BASE FRAME THAT MUST BE SHIMMED
AND/OR GROUTED AFTER LEVELING OF THE
BASE FRAME TO ENSURE PROPER BASE
FRAME SUPPORT.
CONDUIT RUN IS RECOMMENDED FOR •
ROUTING OF HYDRAULIC HOSES AND
ELECTRICAL WIRING.
2" ELECTRICAL CONDUIT USED WHEN 1/2" •
HYDRAULIC HOSE, VENT LINE, AND
ELECTRICAL LEADS ARE TO BE INSTALLED
FROM POWER UNIT TO LIFT (BY
CONTRACTOR).
SURFACE MUST BE
SMOOTH AND LEVEL
2° SLOPE GRADE
AWAY FROM PAD
CONCRETE PAD MUST BE
WELL COMPACTED WITH
NO VOIDS
6"
3"
CENTER LINE OF BUMPER
POSTS TO BE ALIGNED WITH
EDGE OF PAD
36"
5"
9"
8" STEEL
2X
FILLED WITH
CONCRETE TYP.
(BY CONTRACTOR)
48"
8"
36"
PAD DRAIN AS REQUIRED TO
PREVENT STANDING WATER
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4.5 Alternative Pad Plan
ON
96" PAD
NOTES:
FOR MODEL DDL5-59
If sump/drain is not used lift will require 1/2” shims under the lag plates to allow proper
water drainage. The base frame must be shimmed and/or grouted according to the pad
plan to ensure the base frame is properly supported. Hydraulic connections are to be
made at the couplings on the roller end of the base frame.
WITH 72"X96" PLATFORM
7 1/2"
54"
BASE
57"
ANCHORS
FRAME
7 1/2"
72"
PAD
IF SUMP IS NOT USED, THE BASE FRAME •
MUST BE RAISED 1/2" TO ALLOW FOR
PROPER WATER DRAINAGE.
CROSS HATCHING INDICATES AREAS OF •
BASE FRAME THAT MUST BE SHIMMED
AND/OR GROUTED AFTER LEVELING OF THE
BASE FRAME TO ENSURE PROPER BASE
FRAME SUPPORT.
IF CONDUIT RUN IN PAD IS NOT USED FOR •
HYDRAULIC ROUTING CONNECTIONS ARE
TO BE MADE AT COUPLINGS ON ROLLER
END OF BASE FRAME.
HINGE END OF BASE
4X LAG WITH
(MINIMUM) SLEEVE
ANCHORS
5/8"
86"
78"
CENTER LINE OF BUMPER
POSTS TO BE ALIGNED WITH
EDGE OF PAD
5"
9"
6"
THROW OVER
PLATE AREA
ROLLER END
COUPLINGS FOR
HYDRAULIC
CONNECTIONS. FOR
MACHINES MOUNTED
PADS WITH NO CONDUIT
ROUTING PROVIDED.
6"
8" STEEL PIPE
2X
FILLED WITH
CONCRETE TYP.
(BY CONTRACTOR)
SURFACE MUST BE
SMOOTH AND LEVEL
2° SLOPE GRADE
AWAY FROM PAD
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CONCRETE PAD MUST BE
WELL COMPACTED WITH
NO VOIDS
12
48"
8"
36"
4.6 General Installation
1. Attach a chain or lifting strap, with an appropriate load spreader, to the main lifting eyes.
The chain or strap must pull on the lifting eyes vertically.
2. Using an appropriate lifting device, carefully move the machine into position.
USE LOAD SPREADER SO THAT CHAIN/
STRAPS PULLS VERTICALLY ON LIFTING
EYES
INSTALL EYE BOLTS INTO SECOND SET OF
HOLES TO MANUALLY RAISE THE PLATFORM
(OFF PLATFORM CENTERLINE)
3. Remove the lifting eyes and install them into the second set of holes. The second set of
holes have a nut welded to the bottom of the platform and are used to manually raise the
platform for access during installation. Reattach the chain or strap.
LIFTING EYE POSITION FOR
MOVING ENTIRE MACHINE
(ALONG PLATFORM CENTERLINE)
Eye bolts must be removed from holes securing the platform to the base
frame (holes along platform center line) before attempting to raise the
platform.
4. Using the eyes bolts, raise the platform and engage the maintenance device. See the
Maintenance Devices section. Ensure the roller end of the platform is not is not lifted off
of the upper rollers.
5. Remove the eye bolts and save them for future use, if needed.
6. Ensure the machine is level. If necessary use shims beneath the lag plates. All load bearing
points of the base frame must be fully supported by using grout beneath the base frame.
An improperly supported base frame can cause excess wear and/or
permanent damage to the machine.
FRONT ROLL-OVER SUPPORT
LAG PLATES (ALL
FOUR CORNERS)
ROLLER TRACKS (BOTH SIDES)
SIDE ROLL-OVER
SUPPORT (BOTH SIDES)
CROSS HATCHING INDICATES AREAS THAT
NEED TO BE SHIMMED AND/OR GROUTED,
ONCE LEVELED.
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HINGE END
7. Anchor the machine using appropriate anchors.
8. Clear the hydraulic lines by ushing with compressed air.
Hydraulic lines must be clear of debris before connecting or damage
may occur when the unit is powered.
If hoses & electrical wiring are not routed through conduit, hoses and
wiring must be protected from damage by other means.
9. Make all hydraulic connections according the hydraulic schematic.– See Hydraulic
Information section for specications and schematics.
10. Make all electrical connections according the wiring schematic.– See Electrical
Information section for specications and schematics.
11. If applicable, install and anchor ramp.
12. Install handrails and snap cables/ chains.
13. Check all hydraulic hoses and connections, wiring and electrical connections, and other
components for proper installation and damage.
14. Cycle the lift to test function. If platform does not begin to raise after a few seconds, see
Troubleshooting section.
ALL HANDRAILS MUST BE
INSTALLED AND SECURED
BEFORE PERSONNEL MAY
RIDE ON LIFT
THROW OVER PLATE
MUST BE IN RAISED
POSITION BEFORE
RAISING OR LOWERING
THE PLATFORM
ALL SNAP CHAINS/CABLES
MUST BE SECURED
BEFORE PERSONNEL MAY
RIDE ON LIFT
5. Operation
Before operating this machine, read and understand this manual. Inspect the machine for
excessive wear and/ or damage. If excessive wear or damage is found, remove the machine
from service and contact maintenance personnel. Inspect all precautionary labeling. If any
label is missing or illegible contact the manufacturer for replacement labels. Ensure area is free of
debris.
Before raising or lowering, raise throw over plate(s) and bridge plate(s)
to avoid damaging the plate(s).
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To avoid death or serious injury:
• Only trained and/or qualied personnel shall operate this machine.
• Personnel are not permitted on the platform during operation unless handrails and
snap chains/cables are installed.
• Loads that may shift during operating must be secured before operating.
• Keep hands, feet, and loose clothing away from moving parts.
• Do not enter beneath the platform until the load has been removed and the machine
has been secured against lowering with the maintenance device(s).
• Do not load or unload the machine while moving.
• The load’s center of mass must be centered on the platform. Uneven or off center
loading may cause excessive wear or permanent damage.
• During operation, operator must be in view of the machine at all times.
When not in use the platform is to be in the fully lowered position.
To raise the machine, press and hold the UP button on the controls. Release the button when
the platform is at the desired height.
To lower the machine, press and hold the DOWN button on the controls. Release the button
when the platform is at the desired height.
5.1 Loading
All loads should be centered on the platform. Uneven loading can lead to excessive wear or
damage. Always secure loads that may roll or shift during travel.
6. Maintenance & Repair
To avoid death or serious injury:
• Only trained and/ or qualied personnel shall perform maintenance or repair of this
machine.
• Pinch points exist, keep hands, feet, and loose clothing away from moving parts.
• Always use appropriate Personal Protective Equipment when performing and
maintenance or repair.
• Disconnect and lock out electrical supply before performing any maintenance or
repair
• Do not adjust the hydraulic pressure relief valve. This valve is pre-set and
adjustment may cause the machine to fail.
• Before performing maintenance or repair to the hydraulic components, relieve
pressure in the hydraulic system. See Relieving Hydraulic Pressure section.
• Pressurized uids can penetrate skin and cause severe injury. Do not use hands or
other body parts to detect hydraulic leaks.
• Do not enter beneath the platform until the load has been removed and the machine
is secured against lowering with the maintenance device(s). See Maintenance
Devices section.
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6.1 Maintenance Devices
To avoid death or serious injury:
• DO NOT enter beneath the platform until load has been removed and the machine is
secured against lowering using the supplied maintenance device(s).
• The supplied maintenance device(s) are designed to support the weight of
an UNLOADED machine only. Failure to remove the load before engaging
the maintenance devices may result in failure and allow the machine to fall
unexpectedly.
Before performing any maintenance or repair:
1. Remove any load on the platform of the machine.
2. Verify that all personnel and debris are clear of the work area.
3. Raise the lift to the fully raised position.
4. Engage maintenance device as shown in the diagram.
When engaged the maintenance device must rest on the underside of
the platform. Damage may occur if the maintenance device is resting on
the structural reinforcements. Maintenance device to be used on hinge
end of machine only.
5. Slowly lower the machine until the weight of the machine is supported by the maintenance
device(s). Continue to hold the down button for ve to ten seconds after the platform stops
to relieve hydraulic system pressure.
6. Disconnect electrical supply and
lock out the machine to prevent
unintended actuation of the
machine.
7. After maintenance or repair is
complete, verify all tools, debris,
and personnel are clear of the area.
Clean up any spills. Re-energize the
machine.
RAISE THE PLATFORM TO THE FULLY 1.
RAISED POSITION
REMOVE THE MAINTENANCE DEVICE 2.
FROM THE STOWED POSITION AND
PLACE THE END OVER THE POST.
LOWER THE PLATFORM UNTIL 3.
RESTING ON THE MAINTENANCE
DEVICE. WHEN ENGAGED, THE
MAINTENANCE DEVICE MUST REST ON
THE UNDERSIDE OF THE PLATFORM.
DAMAGE MAY OCCUR IF
MAINTENANCE DEVICE IS RESTING ON
STRUCTURAL REINFORCEMENTS
MAINTENANCE DEVICE STOWED
HINGE END
POST
8. Raise the machine to the fully raised
position.
9. Disengage the maintenance device
and stow the maintenance device.
MAINTENANCE DEVICE ENGAGED
10. Lower the machine to the fully
lowered position.
11. Test for proper operation.
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HINGE END
POST
WHEN ENGAGED, THE
MAINTENANCE DEVICE MUST
REST ON THE UNDERSIDE OF
THE PLATFORM. DAMAGE MAY
OCCUR IF MAINTENANCE
DEVICE IS RESTING ON
STRUCTURAL
REINFORCEMENTS
6.2 Periodic Maintenance
Before each use ensure area is clear of debris and sump/drain is clear. Inspect the machine
for excessive wear or damage and ensure all precautionary labeling is legible. Inspect railings,
verify cables/chains are in place and in good condition. Verify push button switch and cord are
functioning and are not damaged.
6.2.1. Weekly Maintenance
• Inspect leg rollers, center pivot pins and bushings, and leg hinge pins and bushings for
excessive wear or damage. Repair or replace as necessary.
• Inspect machine for loose of broken fasteners. Repair or replace as necessary.
• Inspect labeling. If any label is damaged or otherwise illegible contact the manufacturer
for replacement labels.
6.2.2. Monthly Maintenance
• Perform Weekly Maintenance.
• Apply a light oil or PTFE lubricant to non-greased pivot points or rollers.
• Inspect the appearance of the hydraulic uid. The uid should be transparent and clear
of debris.
• Inspect all hydraulic hoses and ttings. Repair or replace as necessary.
• Inspect all electrical wiring and connections. Repair or replace as necessary.
• Inspect limit switches, if applicable. Repair, replace, or adjust as necessary.
6.2.3. Six Months
• Perform Monthly and Weekly maintenance.
• Inspect the hydraulic cylinder and return line. If excessive uid exists in the vent line,
the cylinder may need to be repacked or replaced.
• Change hydraulic uid. Clean the suction screen and vent cap. Replace pressure line or
return line lter element (if equipped).
PULL CABLE
RAILINGS (BOTH SIDES)
HYDRAULIC
CYLINDER PINS
(EACH CYLINDER)
MAINTENANCE
DEVICE
(STOWED)
CENTER PIVOT
PINS/BUSHINGS
(BOTH SIDES)
SNAP CABLES
(BOTH ENDS OF
PLATFORM)
THROW OVER
PLATE
PLATFORM
UPPER/LOWER
ROLLERS
(BOTH SIDES)
HYDRAULIC POWER UNIT
UPPER/LOWER LEG HINGE
PINS/BUSHINGS (BOTH SIDES)
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BASE FRAME
HYDRAULIC
CYLINDERS
6.3 Relieving Hydraulic Pressure
MOTOR
CONTROL PANEL
If the machine is operating normally, hydraulic system pressure can be relieved by lowering the
platform to the fully lowered position or on maintenance device and continuing to hold the down
button for ve to ten seconds.
If the platform is raised and will not lower:
Crush Hazard – Do not enter under the platform.
Remove load before performing any maintenance or repair.
Disconnect and lockout electrical power before performing maintenance
or repair.
Failure to securely block the platform from lowering will allow the
platform to fall uncontrolled when system pressure is relieved, causing
severe injury or death - use only supplied maintenance device.
High pressure uid can cause severe injury or death. Always use proper
personal protective equipment when performing any maintenance or
repair.
1. Thread the lifting eyes into holes on the platform for manually raising the platform (holes off
the center line of the platform). See General Installation Section numbers 1-5.
2. Attach chains/ straps and load spreader to the lifting eyes.
3. Using an appropriate lifting device, slowly pull the chains/ straps until they are taught and
will support the platform when hydraulic pressure is relieved. If the platform is not in the
fully raised position, continue to pull the platform up until it reaches the fully raised position.
Platform weight: approximately 2000 lb.
When lifting the platform by the lifting eyes, ensure cable/chain/straps
pull vertically on the lifting eyes.
4. Ensure platform is secured and will not fall as hydraulic pressure is relieved.
5. Carefully and slowly loosen the hydraulic tting on the input side of the adjustable ow
control shown in the diagram to relieve system pressure. Use an appropriate, clean,
container to catch hydraulic uid in the hoses. Use an oil absorbent to clean up any spills.
Uncontaminated uid can be reused.
6. Engage the maintenance device. - See Maintenance Devices section.
7. Slowly lower the platform until resting on the maintenance device.
DOWN SOLENOID/ VALVE
PUMP
DISCONNECT
HYDRAULIC HOSE
FROM THIS FITTING
TO RELIEVE SYSTEM
PRESSURE
ADUJUSTABLE DOWN
FLOW CONTROL
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6.4 Replacement Parts
Southworth Products has carefully chosen the components in your lift to be the best available
for the purpose. Replacement parts should be identical to the original equipment. Southworth
Products will not be responsible for equipment failures resulting from the use of incorrect
replacement parts or from unauthorized modications of the machine.
Southworth Products will gladly supply you with replacement parts for your Southworth Products
lift. With your order, please include the model number and the serial number of the lift. You
can nd these numbers on the name plate, which is located on the crossbar at the base of the
cylinder(s). When you are ordering parts for a cylinder, also include the cylinder number. This is
stamped on the base of the cylinder housing.
To order replacement parts, please call the Parts Department. See Warranty & Contact
Information section. Parts are shipped subject to the following terms:
• FOB factory
• Returns only with the approval of our parts department.
• Payment net 30 days (except parts covered by warranty).
• Freight collect (except parts covered by warranty).
• The warranty for repair parts is 30 days from date of shipment.
Parts replaced under warranty are on a “charge-credit” basis. We will invoice you when we ship
the replacement part, then credit you when you return the worn or damaged part, and we verify
that it is covered by our warranty. Labor is not covered under warranty for Parts orders.
7. Troubleshooting
PROBLEM POSSIBLE CAUSE CHECK
Load too heavy Make sure the load does not exceed the rated
capacity.
Power unit not receiving
power.
Hand controls may be
malfunctioning or may not be
receiving power.
Motor contactor may be
malfunctioning.
Lift will not raise
Motor may be turning in wrong
direction.
Hydraulic Fluid low With lift in fully lowered position the uid level
Lift has reached it upper limit. Upper limit switch may need to be adjusted
Verify that the power unit is receiving power. See
Electrical Information Section.
Verify that the controls are receiving power
and are functioning correctly. See Electrical
Information Section.
Verify motor contactor is functioning. See
Electrical Information Section.
Swap any two phases of the motor power leads.
should be approximately 3/4” from the top of the
tank.
Motor voltage too low Supply voltage must be ± 10% of the rated
voltage at the motor terminals.
Tank vent plugged Make sure vent plug on hydraulic tank is
installed and not blocked.
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PROBLEM POSSIBLE CAUSE CHECK
Suction lter is clogged Clean suction lter.
Lift will not raise
Lift fails to hold
(Drifts down)
Lift will not lower
Vacuum leak in the suction
line
Check all ttings and hoses for damage or loose
connections.
Down valve may be energized Check wiring to down valve and solenoid valve.
Missing coupling between
motor and pump (if
applicable).
Pressure relief valve is
activated.
Check to make sure the coupling between the
pump and motor has been installed.(Machines
manufactured before September 2012).
If there is a loud squealing noise the pressure
relief valve may be activated. – Contact
Customer Service for assistance.
External Hydraulic leak Inspect all hoses, connections, and cylinders for
leaks.
Down valve may be leaking
internally.
Remove the down valve and inspect for debris
which may be preventing it from closing.
Contact Customer Service for procedure.
Down valve may be energized Check the solenoid with a volt meter.
Cylinder may be leaking Check for uid leaks.
Down valve may not be
energized
Down Flow control may need
Check for power to the solenoid valve with a volt
meter while pressing the down button.
Adjust down ow control as needed.
to be adjusted
Lift raises too
slowly
Lift lowers too
slowly
Voltage may be low Check voltage at motor. Supply voltage must
be ± 10% of the rated voltage at the motor
terminals.
Suction lter, breather cap, or
Remove necessary components and clean.
pressure line may be clogged
Pump may be overheating
Check uid level and viscosity.
due to insufcient oil
Down valve may not be fully
opening or may be partially
Remove the down valve and clean. - Contact
Customer Service for procedure.
blocked or stuck closed.
Flow control may need to be
Adjust the ow control as necessary.
adjusted
Pressure relief valve is
activated.
If there is a loud squealing noise the pressure
relief valve may be activated. – Contact the
manufacturer for assistance.
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8. Electrical Information
M1
1
2
3
5
Sol
DOWN VALVE
SOLENOID
2
HPU MOTOR
STARTER
M1
OL
2
3
5
L1
L1
L3
L2
FUSED DISCONNECT
(BY OTHERS)
208/230/380/
415/460/575V
3 PHASE
50/60 Hz
L2
L3
1
1
UP
DOWN
4
UP LIMIT
OPTIONAL
4
CONNECT ACCORING TO
CORRECT SUPPLY VOLTAGE
1T3
1T2
1T1
MTR
HYDRAULIC
POWER UNIT
MOTOR
L1
1FU
L3
2FU
2
1
3FU
NOTE:
UP LIMIT SWITCH IS OPTIONAL. IF UP LIMIT SWITCH
IS ABSENT, WIRE 3 RUNS DIRECTLY TO THE COIL ON
THE MOTOR CONTACTOR.
Control Voltage: 24/1/60 Motor: 3.2 HP
Primary Voltage Phase Frequency Full Load Amp Required Supply Fusing
460 3 60 4 6 AMP
230 3 60 8 12 AMP
208 3 60 8.4 12 AMP
Other motor and hydraulic power unit options are available. If your machine was supplied
with a motor other than the one described here contact the manufacturer for more
information.
8.1 Wiring Schematic
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8.2 Control Panel
T2
1
3-BL4-WHT
3-BL
X2 XF
FU2
T3
APPLICABLE CODES.
FU3
T1
H1
230V
H3
460V
H2
208V
H4
A1 A2
L1 L2
L3
L1
L3
4
2
G
2
T1
1-RED
T2
T3
NOTE:
GROUND CONNECTIONS NOT SHOWN. FOR
GROUND CONNECTIONS USE SUPPLED
GOUNDING TERMINAL. ENSURE ALL
ELECTRICAL COMPONENTS AND MACHINE
ARE PROPERLY GROUNDED ACCORDING TO
NC
95
CORRECT SUPPLY
FU1
CONNECT L1 TO
208/230/460-3-60 SUPPLY VOLTAGE - SEE
96
ELECTRICAL INFORMATION SECTION
1 2 3 4 5 6
VOLTAGE
(FROM FUSED DISCONNECT - BY CUSTOMER)
JUMPER "A"
ENSURE PROPER FUSES ARE
USED AND OVERLOAD RELAY
IS ADJUSTED FOR
RESPECTIVE PRIMARY
VOLTAGE - SEE ELECTRICAL
INFORMATION SECTION.
GROUNDING
TERMINAL
TERMINAL BLOCK
DOWN
VALVE
MOTOR
CONTROLS
2
5-WHT
5
OPTIONAL UPPER TRAVEL LIMIT SWITCH
(NC) OR PROXIMTY SWITCH(NO) HELD
CLOSED WHEN SCISSORS LEGS IS IN FRONT
OF IT. OPENS AS LEG ROTATES OUT OF
SENSE RANGE.
IF NOT PROVIDED WIRE 3 CONNECTS TO A1
ON MOTOR CONTACTOR VIA THE TERMINAL
BLOCK, REMOVE WIRE 4.
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9. Hydraulic Information
9.1 Hydraulic Fluid Specications
This machine is supplied with Conoco Ecoterra Hydraulic Fluid.
Do not substitute! Conoco Ecoterra Hydraulic oil is not compatible with
oils containing Zinc. Mixing will result in poor machine performance,
could damage hydraulic components, and will lessen the environmental
benets gained by using Conoco Ecoterra Hydraulic Oil.
9.2 Hydraulic Schematic
9.3 Hydraulic Power Unit
ADJUSTABLE FLOW
CONTROL
PRESSURE LINE
TO LIFT
9.4 Hose Specications
TO VENT LINE
CONNECTION ON LIFT
MOTOR
DOWN SOLENOID/ VALVE
PUMP
RESERVOIR
(CAPACITY: APPROXIMATELY
2.4 US GAL.)
REMOVE PLUG AND REPLACE WITH VENT
LINE ELBOW AND CONNECT VENT LINE BETWEEN
LIFT VENT LINE FITTING AND THIS ELBOW.
Minimum operating pressure rating 3,000 psi, 12,000 psi burst pressure.
Pressure hose is optional. Units supplied with 25 feet of vent line and
the hydraulic power unit vent line connection elbow if pressure hose not
purchased other wise the vent line comes in the same length as the
pressure hose.
CONTROL PANEL
BREATHER
VENT LINE
ELBOW FOR
RESERVOIR
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9.5 Hydraulic Arrangements
37 1/2
9/16-18
& VENT LINES
HYDRAULIC PRESSURE
EXCESS FLOW
37 1/2 9/16-18
COUPLINGS FOR
VENT
LINES
PROTECTOR
HYDRAULIC CYLINDERS
PRESSURE LINE
PUSH-TO-CONNECT
FITTING FOR VENT
LINE
ROLLER END
HINGE END
9.5.1. Standard Hydraulic Arrangement
Applicable when machine is installed in a pit/pad with an under lift
conduit run for routing hydraulic hoses and electrical wiring.
HYDRAULIC CYLINDERS
VENT
LINES
HINGE END
PUSH-TO-CONNECT
FITTING FOR VENT
LINE
COUPLINGS FOR PRESSURE
& VENT LINE CONNECTIONS
FROM HPU
PRESSURE LINE
9.5.2. Alternative Hydraulic Arrangement
Applicable when machine is installed in a pit/pad without an under lift
conduit run for routing hydraulic hoses and electrical wiring.
ROLLER END
EXCESS FLOW
PROTECTOR
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10. Warranty & Contact Information
Southworth Products warrants this product to be free from defects in material or workmanship for
the duration of the warranty period. Warranty periods vary and begin on the date of shipment. For
specic warranty information, contact Southworth Products with the machine’s serial number.
Any claim for breach of this warranty must be received in writing by Southworth Products within
the warranty period. Warranties shall not cover failure or defective operation, caused by misuse,
misapplication, negligence or accident, exceeding recommended capacities, or any alteration
or repair of the item purchased which has not been authorized by Southworth Products. Except
as set forth herein, Southworth Products makes no other warranties, express or implied,
including THE WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR
PURPOSE, all of which ARE HEREBY EXCLUDED.
Southworth Products meets the labeling requirements of California’s Proposition 65. Southworth
Products makes no warranty or representation with respect to the compliance of any product with
other State or local safety or product standard codes and any failure to comply with such codes
shall not be considered a defect of material or workmanship under this warranty. Southworth
Products shall not be liable for any direct or consequential damages arising out of such noncompliance.
Southworth Products’ obligations under any warranty or for any other damages which may arise
under any sale, agreement, or contract, are limited to the replacement or repair of defective
components at its factory or another location at Southworth Products’ discretion. This is buyer’s
sole remedy under any such warranty, sale, agreement, or contract. Southworth Products will not
be liable for consequential, incidental, exemplary, or punitive damages of any kind resulting from
a breach of any warranty that it has provided or for breach of any term of any sale, agreement, or
contract. Any warranty may be altered only in writing by Southworth Products.
SOUTHWORTH PRODUCTS CORP.
P.O. Box 1380, Portland, ME 04104-1380
Telephone: 800-743-1000 • 207-878-0700
Fax: 207-797-4734
www.SouthworthProducts.com
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