Vestil WL-100 User Manual
VESTIL MANUFACTURING CORPORATION
P.O. Box 507., Angola, IN 46703 USA
Phone (260) 665-7586 • Fax (260) 665-1339
E-mail: sales@vestil.com • www.vestil.com
Loading Dock Equipment
Revised 11-04 05-126-101
A company dedicated to solving ergonomic and material
handling problems since 1955
.
OWNER'S
MANUAL
Truck Dock Scissor Lift - Series WL-100
Contents
Warnings and Safety Instructions.................... 1
Replacement Parts .......................................... 1
Receiving Instructions ..................................... 1
Pre-installation Instructions ............................. 2
Installation Instructions.................................... 3
Routine Maintenance & Safety Checks ........... 4
Operation Instructions ..................................... 5
Exploded Parts View & Bill of Materials .......... 6
WARNINGS & SAFETY INSTRUCTIONS
Ensure that all employees understand and follow the
following.
• Read and understand the owner’s manual before
using or servicing the scissor dock.
• The load must be removed and the maintenance props
installed, or the platform should be fully lowered before
any work is performed on the lift.
• Ensure that all safety and warning labels stay in place
and are legible. See the labels page in this manual.
• The scissor dock’s frame must be securely anchored
in concrete. See the installation instructions.
• Do not use the lift if any damage or unusual noise is
observed.
• Always watch the platform and any load on it carefully
when the lift is in operation.
• Do not exceed a travel rate of two feet per second
when moving across the platform.
• The platform’s load ratings must be observed at all
times. See the operation instructions.
• Do not perform any modifications to the lift without the
manufacturer’s approval. Failure to receive authorization for
changes to the equipment could void the warranty.
• Maintenance and repairs are to be done only by
personnel qualified to perform the required work.
• Do not use brake fluid or jack oils in the hydraulic
system. If oil is needed, use an anti-wear hydraulic oil
with a viscosity grade of
150 SUS at 100°F, (ISO 32 cSt @ 40°C), or Dexron
transmission fluid.
• Use only replacement parts either supplied or
approved by the manufacturer.
Power Unit’s Operation .................................... 7
Motor & Transformer Connections ................... 8
Electrical Diagrams ..................................... 9-10
Power Unit Exploded Parts Drawing & BOM ........ 11
Hydraulic Logic Manifold, Diagram, & BOM.......... 12
Hydraulic Power Unit & BOM ......................... 13
Troubleshooting ............................................. 14
Safety Label Identification .............................. 15
Warranty ......................................................... 16
WHEN ORDERING REPLACEMENT PARTS
We take pride in using quality parts on the equipment we
manufacture. We are not responsible for equipment
problems resulting from the use of unapproved
replacement parts.
To order replacement or spare parts for this equipment,
contact the factory.
In any communication with the factory please be prepared
to provide the machine’s serial number, which is indicated
on the machine dataplate.
RECEIVING INSTRUCTIONS
Every unit is thoroughly tested and inspected prior to
shipment. However, it is possible that the unit could incur
damage during transit.
Inspect the unit closely when it arrives.
evidence of damage or rough handling to either the
packaging or to the
product when it is
being unloaded,
immediately make a
note of it on the Bill Of
Lading!
It is important that
you remove the
product’s packaging
upon its arrival to
ensure that there is no
concealed damage or
to enable a timely
claim with the carrier
for freight damage.
Also, verify that the
product and its
specifications are as ordered.
Series WL-100
If you see
1
PRE-INSTALLATION INSTRUCTIONS
Review these requirements and procedures before installing the lift.
Consult the factory in the event that there are any questions or problems at the time of installation.
¨ The standard model dock scissor lift is suitable for use outdoors in most industrial and commercial locations.
Pre-installation notes:
· All pit and cement work, curb angles, bumper posts, conduit, and electrical installations, as well as the materials
for the same, are the responsibility of the installer or building owner.
· For a pit installation: a minimum 2” conduit installed in the pit floor or wall is recommended for allowing the hose
and wire access to the lift, and a drain should be installed.
· Five minimum 18 AWG wires (or an appropriate hard service cable) are required between the power unit’s
control enclosure and the lift’s frame. These wires, the power unit’s disconnect, and the branch circuit
overcurrent and short-circuit protection are the responsibility of the installer or building owner.
· The installation must be made so that it complies with all the regulations applicable to the dock, the lift, and their
location. The installer or building owner must verify that the supplied equipment is installed so it will be suited to
the environment in which it will be used, and it must be mounted onto, and anchored into, suitable concrete.
An architectural review of the planned installation is recommended.
· The installation of the dock lift must be performed by suitably trained personnel with access to the appropriate
equipment. The electrical aspects of the installation should be performed by an electrician.
—————————————————————————————————————
For installation you will need the following:
o A lifting boom and rigging, a fork truck with adequate fork length and capacity, or some other appropriate
hoisting means to remove the lift from the freight truck when it arrives and to set the lift into place. The models’
weights can vary from 2,800 – 6,700 pounds.
o Concrete anchors, a masonry drill, a masonry bit, hand tools, grout, and steel shims. Consult the building’s
architect or facility engineer to determine the best size and type of hardware with which to anchor the lift to the
dock approach.
o A power supply circuit and disconnect matching the motor voltage and current requirements. Refer to the labels
on the control enclosure and to the electrical section in this manual for more information.
—————————————————————————————————————
Caution Notes:
¨ Do not work underneath the platform unless the maintenance props are installed in the frame.
¨ The dock lift must be adequately anchored into the concrete at each corner of its frame.
¨ If the supply voltage installed for the lift is different from that originally specified for the order, the connections of
the motor leads and the control transformer’s primary wires must be changed. Consult the electrical diagrams
in this manual.
¨ Modifications or additions to the lift without prior manufacturer’s authorization may void the lift’s warranty (see
ANSI MH29.1, Safety Requirements for Scissor Lifts, section 12.6). The addition of ancillary equipment to the
platform may necessitate that its load capacity be reduced.
2
INSTALLATION INSTRUCTIONS
1. For pit-mounted units, check that the pit conforms to the pit diagram.
Note: If the unit is to be placed into a pit, the required electrical and hydraulic connections to the dock lift should be
made before it is set into place.
2. Mount the power unit in the desired location. The standard 8’ hose will allow the power unit to be mounted
immediately adjacent to the lift. For mounting in other locations, a longer hose will be required. (Use ½” SAE 100R2
2-wire hydraulic hose with a 3,000 psi working pressure rating.)
3. Using an appropriate wiring method, connect the power supply to the power unit’s motor relay. Verify that the motor
supply voltage is the same as that shown on the machine dataplate (located on the middle of the right platform side).
Also verify that the correct control transformer primary leads are connected to the power supply at the motor relay’s
terminals.
4. Remove all steel strapping and shipping materials from the lift. Do not remove the lifting tabs.
5. Use rigging to pick up the unit at the two lifting tabs (one on each end of the platform) and move the lift into place.
Note: If the lift is being pit-mounted, guide the hose and the wires or cable into the pit (such as when a pit conduit is
present) when lowering it. Use care to avoid damage to the lift’s internal electrical and hydraulic components from
the underside. Remove the lifting tabs.
6. Connect the ½” hydraulic hose between the power unit and the lift’s frame.
Note: First, either flush or blow out the hose and fittings if any contaminants are observed inside them.
7. Install a jumper wire from terminal #3 to terminal #4 in the power unit’s control enclosure. Verify that the overload
relay setting matches the motor’s full-load amperage at the selected supply voltage.
8. Use the pendant control to raise the platform just high enough to allow the table’s safety maintenance props to be
placed into the frame. Use the manual valve to lower the platform so the leg set rests on the props. (Push down,
turn the knob CCW, and release it to open the lowering valve. Push down and turn CW to close it.)
9. Remove the jumper wire between terminal #3 and terminal #4.
10. At both the lift’s frame junction box and the power unit’s control enclosure, connect the five wires (including the
grounding wire) to the limit switch and toe guard circuit wires. See the electrical diagram in this manual.
11. Close and secure the control enclosure door and put the plastic cover over the power unit.
12. Cut and remove the plastic ties that hold the aluminum toe guard strips up during shipping. Verify that all the strips
drop down and move freely, and that the switch in the middle of each strip is not actuated.
13. Raise the platform to a height of 60”, measured from the bottom of the frame. Adjust the upper limit switch arm
(mounted on the non bridge-end of the frame) so that the motor turns off at that height.
14. Bleed the cylinders following the air bleed procedure at the bottom of the “Power Unit Operation” page. Afterward,
remove the maintenance props and lower the platform using the pendant control. Hold the “DOWN” pushbutton for
several seconds after the platform is lowered so that any air in the hose will be able to more easily migrate to the
reservoir.
15. While lowered, check the platform for proper lowered height, or that it is flush with the ground if pit mounted.
16. Raise the lift, install the maintenance props, and lower the leg set onto them once again.
17. Anchor the frame to the floor through each of the two 13/16” holes located near each frame corner.
18. Shim and/or grout under the full length of the frame sides.
19. Remove the maintenance props and operate the lift through several full up/down cycles. Verify that the upper travel
limit switch (mounted in the frame) and the toe guard switches (around the perimeter of the platform) function
properly.
20. Check the hydraulic oil level. It should be filled to within 3” of the top of the reservoir. If oil is needed, use an antiwear hydraulic oil with a viscosity grade of 150 SUS at 100°F (ISO 32 at 40°C) or a non-synthetic automatic
transmission fluid.
21. Clean up any debris or spilled oil, and verify that all of the warning and safety labels are intact.
3
ROUTINE MAINTENANCE & SAFETY CHECKS
•
Warning: Care should be taken to identify all potential hazards and comply with applicable safety procedures
before beginning work.
•
Warning: Raise the platform and install the maintenance props before beginning any inspections or work on the
unit.
•
Only qualified individuals trained to understand mechanical devices and their associated electrical and hydraulic
circuits should attempt troubleshooting and repair of this equipment.
(A) Before each use inspect for the following:
1.) Frayed wires
2.) Oil leaks
3.) Pinched or chafed hoses
4.) Damage or structural deformation to the structural members, the cylinder brackets, etc.
5.) Unusual noise or binding, or evidence thereof.
6.) Proper functioning of all limit switches, including those on the perimeter pinch point guard.
(B) Inspect monthly for:
1.) The oil level. Oil should be 1½” to 2” below the reservoir’s fill hole with the lift fully lowered.
See below for the hydraulic oil specification.
2.) Worn or damaged hydraulic hoses and electrical wires.
3.) Pivot point wear.
4.) Rollers’ looseness and wear.
5.) Integrity of the retaining rings on all rollers and on all pivot point pins.
6.) The integrity of the frame anchor bolts, and for cracks in the concrete around them.
7.) Proper functioning of any hand- or foot-operated mechanisms.
8.) Damage or deformity of the bridge plates (including the hinge) and the handrails.
9.) Unusual noises or movement during operation.
10.) All the information, safety, and warning labels being in place and in good condition.
11.) The need to clean off dirt and debris.
(C) Yearly inspection
The oil should be changed if the oil darkens, becomes gritty, or turns a milky color (indicating the presence of
water). Replace with an anti-wear hydraulic oil with a viscosity grade of 150 SUS at 100°F, (ISO 32 at 40°C). Ex: AW
32 or HO 150 hydraulic oil, or a non-synthetic transmission fluid. You may use a synthetic transmission fluid if you
flush the system with the synthetic fluid before filling the reservoir.
4
OPERATION INSTRUCTIONS
•
Consult ANSI MH29.1, Section12 for the owner’s / user’s responsibilities regarding the operation, care, and
maintenance of the scissor dock.
•
Ensure that all employees involved in the operation of this lift understand and follow these instructions!
§ The standard model scissor dock is suitable for use indoors or outdoors in most industrial and commercial
locations. It is intended to be used to raise and lower material handlers such as fork trucks and pallet jacks to
allow freight to be loaded and unloaded from semi trailers.
Loading:
The load rating, in pounds, is shown on the machine dataplate located on the bevel of the bridge plate end of the
platform. It indicates the net capacity of the scissor dock with a static load that is centered and evenly distributed on the
platform.
When not fully lowered, the lift’s maximum single axle load is 60% of the rated capacity for side loading, and 75% for
end loading. (The hydraulic hose and bridge plates are at the lift’s “ends.”)
In the fully lowered position, cross-traffic loads must not exceed two times the platform’s load rating.
Do not exceed a rate of two feet per second when moving loads across the platform.
Note:
The addition of any ancillary equipment to the scissor dock by third parties must be taken into account when
determining the maximum working load to be placed on the platform.
Warning:
from exceeding the listed capacity.
Do not exceed the scissor dock’s load ratings. Permanent damage to the lift or injury to personnel could result
Operation:
§ Inspect the perimeter pinch point guards’ operation daily.
Warning:
any part of the lift before lowering the platform.
Caution:
§ The scissor dock is furnished with a constant-pressure (dead-man style) pushbutton control on a coil cord.
• Pressing the “UP” pushbutton will turn on the power unit to raise the platform. The platform will raise only while
the control is pressed. Upon releasing the control, the platform will stop and hold its position.
• Pressing the “DOWN” pushbutton will energize the lowering valve to allow the platform to descend by gravity (the
motor does not run). Releasing the control button, or the operation of the pinch point guard, will stop the platform
movement and the unit will hold its position.
§ To lower the platform in the event of a malfunction or power outage, remove the power unit cover and locate the
colored, knurled knob on the end of the lowering valve. Be certain there are no obstructions or personnel under the
lift! Push the knob in, twist the knob counterclockwise 180°, and release it. When the platform has been lowered,
push the knob in again, twist the knob clockwise 180°, and release it.
Keep all personnel clear of the lift when it is in operation. Be certain no part of any person or object is under
Always carefully watch the platform and any load on it when the lift is in operation.
Safety:
Warning:
Warning:
Caution:
seems to be malfunctioning. Notify your supervisor or maintenance personnel if you notice anything out of the ordinary.
§ Check the operation of the perimeter pinch point guards daily. Do not use the lift if the guard’s aluminum bars are
§ Ensure that all safety and warning labels stay in place and are legible. Refer to the labels page.
Do not exceed the scissor dock’s load ratings as indicated above.
Keep all personnel clear of the scissor dock when it is in operation.
Never use the scissor dock if any damage or unusual noise is observed, if it is in need of repairs, or if it
bent or if the circuit is not functional.
5
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