Vestil PST User Manual

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Page 1

VESTIL MANUFACTURING CORPORATION

2999 North Wayne St., Angola, IN 46703 USA

Phone (260) 665-9521 • Fax (260) 665-1339

E-mail: sales@vestil.com • www.vestil.com

Ergonomic Solutions

Contents

Warning and Safety Instructions ..................... 1

Receiving Instructions ...................................... 1

Installation Instructions - EHLT & PST ....................2

Operating Instructions - EHLT ................................. 3

Instructions for Battery Unit - PST ..........................4

Maintenance & Safety Checks - EHLT & PST.......5

Power Units Operation - EHLT & PST .....................6

Motor & Transformer Connection - EHLT & PST . 7

WARNINGS & SAFETY INSTRUCTIONS

Ensure that all employees understand and follow the following instructions.

• Read and understand the owner's manual before using or serving the lift.

• The load must be removed from the platform and the maintenance props installed before any work is performed on the lift.

• For battery-powered units, review the additional warnings included elsewhere in this manual.

• Ensure that all safety and warning labels stay in place and are legible. See the labels page in this manual.

• For non-portable units, the scissor lift frame must be securely anchored to the floor. See the installation instructions.

• Do not use the lift if any damage or unusual noise is observed.

• Always watch the lift and any load on it carefully when it is in operation.

• The platform's load must be centered and evenly distributed on the platform.

• 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 repair 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 @ 40°C), or Dexron transmission fluid.

• Use only replacement parts either supplied or approved by the manufacturer.

Revised 09-03

A company dedicated to solving ergonomic and material handling problems since 1955

OWNERS MANUAL

ELECTRIC HYDRAULIC SCISSOR TABLE Series EHLT & PST

Electrical Diagram - EHLT & PST .............................8

Hydraulic Diagram - EHLT & PST .............................9

Electric/Hydraulic Parts List - EHLT & PST ......... 10

Parts List & Drawing - EHLT ............................ 11-12

Parts List & Drawing - PST .................................... 13

Trouble Shooting Guide - EHLT & PST .......... 14-15

Limited Warranty - EHLT & PST............................. 15

Warning Label Identification - EHLT.................... 16

RECEIVING INSTRUCTIONS

Every unit is thoroughly tested and inspected prior to shipment. However, it is possible that the unit may incur damage during transit. If you see damage when unloading, make a note of it on the BILL OF LADING. Remove all packing and strapping material, inspect for damage. IF DAMAGE IS EVIDENT, FILE A CLAIM WITH THE CARRIER IMMEDIATELY! Also, check the unit size, type of power unit, etc., to ensure the unit is correct for the intended application.

MODEL NUMBER AND CAPACITY

The model number, serial number and capacities are inscribed on the nameplate. Please remember to include these numbers in any correspondence with you dealer or the factory.

EHLT PST

ELECTRIC HYDRAULIC SCISSOR TABLES

Series EHLT & PST

E N

E S P A N

F R A N Ç A

Page 2

INSTALLATION INSTRUCTION - MODEL EHLT

Review this entire page before installing the lift. Consult the factory in the event there are any questions or problems at the time of installation.

The scissor-lift must be removed from the shipping wood and securely anchored to the floor before use!

• The standard model scissor lift table is suitable for use indoors in most industrial locations and many commercial locations, and is typically provided as a turnkey system. Anchoring the unit to the floor and an electrical supply is typically all that is required for installation.

• 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.

• The installation must be made so that it complies with all the regulations applicable to the machine and its location. The end-user must verify that the supplied equipment is installed so it will be suited to the environment in which it will be used.

• Installation 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.

Note: If the unit is to be placed into a pit, you will need to first determine how the required electrical (and possibly hydraulic) connections will be made once the unit is in place.

------------------------------------------------------------------------------------------------------

For installation you will need the following:

1. A fork truck or hoisting means.

2. Lag bolts, a masonry drill, a masonry bit, a wrench to fit the lag bolt nuts, 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 machine to the floor.

3. A power supply circuit 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. The end-user is responsible for supplying the branch circuit's required overcurrent and short-circuit protection.

------------------------------------------------------------------------------------------------------

1. Move the lift into place with straps or forks placed under the table's frame. Use care to avoid damage to the electrical or hydraulic components inside the lift.

2. Temporarily connect the power supply to the pigtail cord supplied with the table, and raise the platform so the table's safety maintenance props can be utilized. Lower the platform so the unit is supported by the props.

3. Anchor the frame to the floor through the 3/4" holes located near the frame corners.

4. Shim and/or grout under the full length of the frame sides.

5. Make permanent connection to the power supply, using an appropriate wiring method.

6. 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 property.

7. Check the hydraulic oil level. It should be filled to within 1" to 1-1/2" of the reservoir's fill hole. If oil is needed, use an anti-wear hydraulic oil with a viscosity grade of 150 SUS at 100°F (ISO 32 at 40°C) or a non-synthetic automatic transmission fluid.

8. Clean up any debris or spilled oil, and verify that all of the warning and safety labels are intact.

If the platform must be raised without first having the proper power supply connected, raise the platform at the end of the table through which the power supply cord enters the frame. Use caution to avoid damage to the perimeter pinch (toe) guard! Use lifting chains with hooks fastened on each side, near the end of the platform, or insert a lift truck's forks under the end of the platform. standing on the ends of the shipping 4 x 4's on that end of the lift while the platform is raised.

Take care to not damage the hanging aluminum toe guard.

Hold the frame down by

Page 3

OPERATION INSTRUCTIONS - EHLT & PST



Consult ANSI MH29.1, Section 12 for the owner's/user's responsibilities regarding the operation, care, and maintenance of this machine.



Ensure that all employees involved in the operation of this lift understand and follow the following instructions!

LOADING:

The load rating, in pounds, is shown on the machine dataplate located on the right corner of the hinged end of the platform. It indicates the net capacity of the lift with the load centered and evenly distributed on the platform.

Warning:

- that could cause the roller end of the platform to tip up and dump the load. For applications involving side or end edge loading, consult the factory.

Note:

determining the maximum working load to be placed on the table.

Warning:

exceeding the listed capacity.

The platform's rollers are not captured. Therefore, do not overhang any load at the hinged end of the platform

The addition of any ancillary equipment to the platform by third parties must be taken into account when

Do not exceed the lift's load ratings. Permanent damage to the lift or injury to personnel could result from

OPERATION:

Inspect the perimeter pinch point guards' operation daily.

Warning:

any part of the platform before lowering the unit.

Caution:

The lift is furnished with either a constant-pressure (dead-man style) push button (standard) or twin foot switch (optional) control.

Pressing the "UP" push-button or foot switch 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" push-button or foot switch will energize the lowering valve to allow the platform to descend by gravity (the motor does not run). Again, releasing the control will stop the platform movement, and the unit will hold its position.

Caution:

malfunctioning. Notify your supervisor or maintenance personnel if you notice anything out of the ordinary.

Keep all personnel clear of the machine when it is in operation. Be certain no part of any person or object is under

Always carefully watch the lift and any load on it when it is in operation.

Never use the lift if any damage or unusual noise is observed, if it is in need of repairs, or if it seems to be

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S H

On DC-powered units, attempting to raise the lift when the battery is low will cause the motor relay protection to prevent the motor's operation. Adequate battery voltage is indicated by a green LED on the motor relay. See the next page for more notes regarding operation of battery-powered units.

Ensure that all safety and warning labels stay in place and are legible. Refer to the labels page in this manual.

ORDERING REPLACEMENT OR EXTRA PARTS:

Our company takes pride in using the finest available parts for our equipment. We are not responsible for equipment failure resulting from the use of unapproved replacement parts. To order replacement or extra parts for your equipment contact Customer Service at the factory. In any correspondence with the factory please include the Serial Number which is inscribed on the nameplate of the piece of equipment. Use only the part numbers provided in this Owner's Manual. When ordering parts for AC power units please indicate the motor phase and voltage that the equipment is operating on.

Page 4

ADDITIONAL INSTRUCTIONS FOR BATTERY-POWERED UNITS - PST

• Working with or near lead acid batteries is dangerous. Batteries contain sulfuric acid and produce explosive gases. A battery explosion could result in loss of eyesight or serious burns.

• Do not smoke or allow a spark or flame near batteries. Charge batteries in locations which are clean, dry, and wellventilated. Do not lay tools or anything metallic on top of any battery. All repairs to a battery must be made by experienced and qualified personnel.

• When working with batteries, remove personal items such as rings, bracelets, necklaces, and watches. Batteries can produce enough energy to weld jewelry to metal, causing a severe burn.

• Always have fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes.

• Operating the battery with a low battery voltage can cause premature motor contact failure.

• Do not expose the lift or charger to rain or adverse conditions.

• Replace defective cords or wires immediately.

• Check the battery's water level frequently.

Battery Charger Operating Instructions

Never operate the charger with either of the cables coiled. Operating the unit with the cord wrapped around itself could

cause the cord to overheat, melt, and cause a short-circuit or a fire.

Plug the charger into a standard 115V receptacle. If an extension cord must be used, keep it as short as possible. Connection: the ribbed wire of the charger's output cord must be connected to the battery's negative (-) terminal. The

non-ribbed wire must be connected to the battery's positive (+) terminal. Reversing this polarity will blow the charger's output fuse.

When properly connected, the charger will indicate the status of the charger output.

Flashing green, solid red LED - the charger is not seeing a good connection to the battery of the charger's

output fuse has blown.

Solid yellow and red LED's - the charger is providing charging current to the battery. Solid green and red LED's - the charger is maintaining a fully-charged battery.

CAUTION

cords, receptacles and other equipment.

Troubleshooting:

If unit does not operate, check all of the wiring connections to make sure they're both mechanically and electrically

sound - specifically at the battery, the motor, and at any location a wire is connected to the chassis. Also make sure the quick-connection plug on the end of the pendant control cord is plugged in correctly.

A fully-charged lead acid battery in good condition at room temperature should read 12.65 volts. At 11.9 volts it is

considered to be fully discharged and in need of charging. When check battery voltage, wait at least 1/2 hour after the charger has been turned off before checking the batter's voltage.

If the batteries don't seem to be taking a charge, check the charger's 115V supply circuit, the charger's 10A output

fuse, and the charger's output with a voltmeter. If all check okay, confirm the battery's state of charge using a hydrometer or a voltmeter.

: Remember to unplug the charger before moving the equipment. Failure to do so could cause damage to

Page 5

ROUTINE MAINTENANCE & SAFETY CHECKS - EHLT & PST



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 (if applicable).

(B) INSPECT MONTHLY FOR:

1.) The oil level. Oil should be 1-1/2" to 2" below the reservoir's fill hole with the lift in the fully raised position.

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 at all pivot points.

6.) The integrity of the frame anchor bolts, and for cracks in the concrete around them. (Non-portable table units only.)

7.) Looseness, wear, or damage to the casters' bearings, mounting hardware, or surface material. (Portable units only.)

8.) Proper functioning of any hand- or foot-operated mechanisms.

9.) Proper water level in the battery.

10.) Unusual noises or movement during operation.

11.) All the information, safety, and warning labels being in place and in good condition.

12.) The need to clean off dirt and debris.

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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.

Page 6

THE POWER UNIT'S OPERATION - EHLT & PST

The electric/hydraulic scissor lift utilizes an electric motor directly coupled to a gear-type hydraulic pump to produce the needed fluid pressure and flow to allow the cylinders to perform the work of lifting the platform load.

A hydraulic manifold houses the hydraulic control components, and is bolted directly onto the gear pump. The power unit's hydraulic components are all rated for 3,000 psi working pressure.



Important parts of the power unit include:

• The electric motor. Motors are available for operation on single- or three-phase. AC supplies (all are dual-voltage capable), or on a 12 VDC battery.

• The gear pump. Its shaft is coupled directly to the shaft of the electric motor. Several displacements are available, depending on the motor horsepower used.

• The check valve. Its purpose is to prevent the backflow of fluid through the pump. In this way it allows the platform to be held at a given elevation indefinitely.

• The pressure relief valve. Its job is to open a path for fluid to flow back to the reservoir in the event that the fluid pressure built up by the pump exceeds 3,000 psi. Thus the pump cannot generate more than 3,000 psi.

• The lowering solenoid valve. This is an electrically-operated cartridge valve. It contains a screen to keep contaminants from entering the valve.

• The pressure-compensated flow control spool. This rests under the lowering valve, and regulates the fluid flow back to the reservoir when the valve opens. It allows the table to always lower at the same rate regardless of whether there is a load on the platform or not. Several sizes are available.

• The hydraulic lift cylinder(s). These are displacement-style cylinders. They have a bleeder valve located at their top endto allow air to be bled fro the hydraulic system.

• The safety velocity fuse. This is a devise that is installed in the cylinder's hose port. It closes quickly in the event of a catastrophic hose failure to prevent the lift from collapsing down. The platform remains stationary until pressure is reapplied to the system.

• The hydraulic fluid. The system uses HO150 hydraulic fluid. Any anti-wear hydraulic oil with a viscosity grade of 150 SUS at 100°F (ISO 32 at 40°C) such as AW 32 or a non-synthetic transmission fluid is acceptable.

When the platform is to be raised, press the "UP" push-button or foot switch. The motor turns, and in turning it spins

the hydraulic gear pump. Oil is drawn from the reservoir through the suction filter and into the pump. The pump pushes the then-pressurized oil through the check valve and out to the lift cylinders.

When the platform is to be lowered, press the "DOWN" push-button or foot switch. The lowering valve opens,

bypassing the check valve and allowing the oil in the cylinders to return back to the reservoir through the return hose. The rate at which the platform lowers is regulated by the internal pressure-compensated flow spool.

 In the event that the platform creeps down slowly after releasing the "DOWN" control, it will be necessary to remove

the lowering cartage valve for inspection and cleaning, as follows:

• Remove any load from the platform.

•

Warning:

• Remove the nut holding the solenoid coil on the valve stem, and then unscrew the valve from the manifold.

• Inspect the valve for contaminants, and the valve's o-rings and back-up washers for cuts, tears, and other damage.

• With the valve immersed in mineral spirits or kerosene, use a thin tool such as a small screwdriver or a small hex wrench to push the poppet in and out several times from the bottom end of the valve. The valve should move freely, about 1/16" from closed to open position. If it sticks in, the valve stem could be bent and will need to be replaced if it doesn't free up after cleaning. Blow the valve off with a compressed-air gun while again pushing the poppet in and out.

• Inspect the bottom of the manifold's valve cavity for contaminants.

• Again with the thin tool, press on the middle of the flow control spool located in the bottom of the cavity. It should move down and back up freely.

• Reinstall the valve into the manifold, tightening the valve with approximately 20 lb-ft of torque.

 If the platform lowers extremely slowly or not at all, the cylinder's velocity fuse could be closing. This can be caused

by air in the hydraulic cylinders. To bleed the air from the system:

• Remove any load from the platform.

•

Warning:

• Hold a rag over the cylinder's bleeder valve (it looks like a grease zirk) and open valve about 1/2 turn with a 1/4" wrench. Oil and air will sputter from the valve - once no air is observed, close the valve.

Raise the lift and install the maintenance props. Lower the platform until the lift rests on the props.

Page 7

MOTOR & TRANSFORMER CONNECTION DIAGRAM - EHLT & PST

CAUTION!

match the new motor voltage also.

If the motor voltage is changed, the wire on the control transformer's primary wire has to be changed to

.5 HP, .75 HP AND 3 HP SINGLE-PHASE MOTORS AND FOR

MOTOR LEAD CONNECTION DIAGRAM FOR ALL

ALL 2 HP, 5 HP, AND 6.5 HP THREE-PHASE MOTORS

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* The two thermostat leads go to: 1) the grounded side of the transformer secondary, and 2) the motor relay coil, in either order.

aBE SURE ALL POWER IS OFF BEFORE ATTEMPTING TO WORK ON THIS EQUIPMENT!

CAUTION: SERVICE WORK SHOULD BE PERFORMED ONLY BY TRAINED & QUALIFIED PERSONNEL.

Page 8

ELECTRICAL DIAGRAM - EHLT & PST



Warning: Care should be taken to identify all potential hazards and comply with applicable safety procedures before beginning work. Fully lower or securely support the platform, and ensure that system pressure and power have been removed, before attempting to work on any of the hydraulic components!



Only qualified individuals trained to understand mechanical devices and their associated electrical and hydraulic circuits should attempt troubleshooting and repair of this equipment.

Page 9

HYDRAULIC DIAGRAM - EHLT & PST



Warning:

procedures before beginning work. Fully lower or securely support the platform, and ensure that system pressure and power have been removed, before attempting to work on any of the hydraulic components.

 Only qualified individuals trained to understand mechanical devices and their associated electrical and hydraulic

circuits should attempt troubleshooting and repair of this equipment.



Caution:

with a viscosity of 150 SUS at 100°F (ISO 32 at 40°C) or a non-synthetic transmission fluid.

Care should be taken to identify all potential hazards and comply with applicable safety

Do not use brake fluid or jack oils in the hydraulic system. If oil is needed, use an antiwear hydraulic fluid

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Page 10

ELECTRIC/HYDRAULIC BOM - EHLT & PST

Item#

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

23 24 25 26

27 28 29 30 31 32 33 34 35 36

Qty

1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 2 1 1 1 1 1 1

1 1 2 2

1 1 1 1

1 or 2

1 1 1 1

1-1/2

Part Number

Electrical parts used only on AC lifts: 01-135-XXX S11.310-24AC 01-129-001 AGC 2 01-029-006 01-522-015 99-034-008 01-033-017 01-033-015 Electrical parts used only on DC lifts: 01-135-036 15-022-004 99-034-010 MDL-15 15-139-001 01-033-024 SY6319GI A-402DSC 01-522-019 15-034-003 332-901 831613C3EB AB443JS Electrical parts used on both AC & DC lifts: 01-022-001 01-033-009 159/D 01-022-022 Hydraulic parts used on all standard scissor lifts: 99-153-005 99-153-015 99-153-011 99-153-024

99-021-XXX

99-127-001 01-143-XXX DPS-40-N06 01-031-005 HO 150

Part Description

Motor; varies by customer spec; contact factory Motor contactor, 30A, w/24 VAC coil Transformer, control; w/ 24 VAC secondary Fuse, for control circuit Control enclosure, 6"W x 6"L x 4"D Push-button control on 8' cord Solenoid coil, 24 VAC Connector cord, for solenoid coil Cord, power, 14/3, 9' long, w/ NEMA 5-15 plug (115V units only)

Motor, 12 VDC, 2000W Motor relay, "SmartStart" Solenoid coil, 12 VDC

Fuse, charger output Battery, 12 VDC, deep-cycle Quick-connect cord (with 4-pin plug) Cable connector, to battery Junction box, 2"W x 4"L x 2"D Push-button control on 18" - 90" coil cord Battery charger, 12 VDC, 15 amp BCI (battery charge indicator) (option) Push-to-test button for BCI (option) Junction box, 4"W x 4"L x 3"D (option)

Limit switch, roller-arm (N.C.) Cable, 18/2 coil cord, 18" - 90" (to toe guard switches) Multi-pole terminal strip Toe guard switch

Valve, relief, 210 bar Valve, solenoid, N.C. Valve, check Flow control spool, 2 gpm Cylinder, displacement; varies by model; contact factory Manifold, lift-hold-lower Pump, hydraulic; varies by model; contact factory Breather plug Fitting, intake screen Hydraulic fluid (gallons)

Page 11

EXPLODED PARTS DRAWING

Scissor Table - Model EHLT

19 18

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Page 12

PARTS IDENTIFICATION - Scissor Table - Model EHLT

ITEM

NUMBER

DESCRIPTION

Pin, Roller 3/16" dia. x 1-1/8" lg.

Pin, Cylinder Pivot 1-1/8" dia.

Bearing, Sleeve 1-1/8" dia. x 3/4" lg.

Cylinder, Hydraulic 3" dia x 10" stk

Roller, 3-1/4" dia. x 3/4"w

Bearing, Sleeve 1-1/8" dia. x 5/8" lg.

Washer, Thrust Bearing 1-1/8" dia. x .06 thk.

Retainer Snap Ring 1-1/8" dia. External

Washer, Thrust Bearing 1-1/2ID x .06 thk.

Pin, Hinge 1-1/8 dia.

Shim, Machinery Bushing 1-1/8" ID x .06 thk.

Pin, Scissors Pivot 1-1/2" dia.

Bolt, Shoulder 3/8" dia. x 1-1/2" lg.

Bearing, Sleeve 1-1/2" dia x 1-1/2" lg.

ENGINEER NUMBER

a/l

24-112-02

01-111-002

99-021-901

01-027-001

01-111-001

01-115-001

a/l

01-115-003

01-112-004

a/l

01-112-019

a/l

01-111-003

PART NUMBER

a/l

ST-CYLPIN

ST-CYLBRG

ST-CYL

ST-RLR

ST-RLRBRG

ST-TRBRG

a/l

ST-HP

a/l

ST-SPP

a/l

ST-BRG

QTY

Bolt, Cylinder Retainer

Nut, Hex Nylock 1/4-20 unc

Washer, Flat 1/4 nom ID

Toe Guard Support

Screw, Hex HD 1/4-20 unc x 2-1/2" long

Nut, Hex Jam 1/2-13 unc

Screw, #8-32 x 1/2 lg Flat HD Socket Cap

Toe Guard Actuator

Specialty Hardware, Toeguard

Switch, Electrical Limit N.C.

Screw, #4-40 x 1/2 lg. Button Head Sock Cap

Toe Guard End L-Shaped

Toe Guard Side L-Shaped

Shim, Machinery Bushings 1-1/2" dia. x .06 thk

Nut, Hex Nylock 5/16-18 unc

01-118-001

a/l

01-015-009

a/l

01-015-008

01-145-010

01-022-022

a/l

01-015-912

a/l

ST-CRB

a/l

ST-TGCNR

a/l

ST-TGA

ST-HDW

ST-LS

a/l

ST-TGAE

a/l

**PLEASE SUPPLY SERIAL NUMBER AT TIME OF ORDER**

Page 13

EXPLODED PARTS DRAWING & PARTS LIST Portable Scissor Table - Model PST

ITEM

NUMBER

1 2 3 4 5 6 8

9 10 11 12 14 15 17 18 19 19 19 19 19 19 19 20 20 21 22 23 24 25 26 27

**PLEASE SUPPLY SERIAL NUMBER AT TIME OF ORDER**

DESCRIPTION

8 x 2 Phenolic Rigid Caster Roller Snap Ring 12V DC Motor Hydraulic Pump Manifold with Valves (lift hold lower) 8 x 2 Phenolic Swivel Caster 3/8 x 5 Carriage Bolt with Lock Nut Junction Box Hand Control Floor Lock (Side Lever Actuated) Battery Box with Lid and Strap 12V DC Battery Toe Guard Corner Bolt and Nut 2 x 10 Displacement Type Cylinder 2-1/2 x 10 Displacement Type Cylinder 2-1/2 x 10 Displacement Type Cylinder 3 x 10 Displacement Type Cylinder 3 x 10 Displacement Type Cylinder 2-1/2 x 10 Displacement Type Cylinder (2 req) 2-1/2 x 10 Displacement Type Cylinder (2 req) Single Cylinder Upper Cylinder Pin Dual Cylinder Upper Cylinder Pin Cylinder Retaining Bolt Toe Guard Limit Switch Toe Guard Actuator Toe Guard Limit Switch Hardware Specialty Hardware Screw #8-32 x 1/2 Up Travel Limit Switch (Roller Arm) Limit Switch Kit (Inc. switch, actuator and hdw)

ENGINEER NUMBER

PH-8/2-R 01-027-001 68021 01-135-036 01-143-006 99-127-001 PH-8/2-S 21373-37024 PST-J-BOX 01-522-022 FL-LK-SMR 15-139-002 15-139-001 01-015-009 11013-36209 99-021-903 99-021-906 99-021-906 99-021-901 99-021-901 99-021-906 99-021-906 01-112-01 01-112-015 01-118-001 01-022-022 01-015-008 01-145-010 01-145-010 81190 MJ1-6114 PST-LS-KIT

GENERIC NUMBER

PST-CSTR-RGD PST-RLR PST-SNPRG PST-MTR PST-PMP PST-MFD PST-CSTR-SVL PST-CSTR-HDW PST-J-BOX PST-HND-CTL PST-FL-LK PST-B-BOX PST-BAT PST-TG-CNR PST-TG-HDW PST-CYL-1-46 PST-CYL-1-58 PST-CYL-2-46 PST-CYL-2-58 PST-CYL-3-46 PST-CYL-3-58 PST-CYL-4 PST-CYL-UPN-1 PST-CYL-UPN-2 PST-CYL-RET-BLT PST-TG-LS PST-TG-ACTR PST-TG-LS-HDW PST-TG-SPHDW PST-TG-SC PST-UTLS PST-LS-KIT

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Page 14

TROUBLESHOOTING GUIDE - EHLT, PST



WARNING: Care should be taken to identify all potential hazards and comply with all applicable safety procedures before beginning troubleshooting or repairs.



CAUTION: Before performing any troubleshooting or repairs, the load must be removed from the platform. Then either raise the platform and install the maintenance props or fully lower the platform to the floor.



Only qualified individuals trained to understand mechanical devices and their associated electrical and hydraulic circuits should attempt troubleshooting and repair of this equipment.

Consult the factory for problems at time of installation, or for any problems not addressed in this manual.

* Check the DC notes page for troubleshooting other problems specific to batteries and charges.

PROBLEM

1) Problem unit doesn't run when "UP" button is pressed.

2) Motor runs, platform doesn't move. Power unit not noisy.

3) Motor hums or pumps squeals, but the platform does not move, or the platform moves only slowly.

POSSIBLE CAUSE(S)

a) Transformer fuse is blown. b) No supply voltage.

c) Upper-travel limit switch is

engaged or bad.

d) Bad control transformer. e) Bad motor relay coil.

f) Battery voltage low (DC units).

a) Motor rotation is wrong (AC-

powered units only).

b) Pump is failing to build pressure.

a) See last paragraph, above. b) Excess voltage drop to motor, due

to power wire size too small, wire run too long, or incoming voltage too low.

c) Motor is "single-phasing".

d) Pressure relief opening at full

pressure.

e) Contamination holding open the

lowering valve or the check valve.

ACTION

a) Test with meter; replace if bad. b) Test with meter. Check fuses,

breakers, and overloads to determine the causes.

c) Inspect, test switch. Replace if

bad. Check for 24 VAC; replace if

bad. d) Test with meter; replace if bad. e) The green LED on motor relay will

be off, or will turn off when the UP

push-button is pressed. f) Test with meter. Change battery if

low (is motor relay LED on?)

a) Verify motor runs CW, opposite the

shaft end. b) Consult factory.

a) Same as above. b) Check power installation for

adequacy. Check incoming voltage

while

motor is running. Correct

problem found. c) Determine cause of loss of voltage

on one phase; correct. d) Check for structural damage or

binding of the scissor legs, etc.

check for platform overload

condition. e) Remove and inspect. Clean per

instructions in this manual.

4) Platform raises, then drifts down.

5) Spongy or jerky platform movement.

6) Platform won't lower.

a) See last paragraph, above.

a) Excessive air in the hydraulic

cylinders.

b) Toe guard is actuated.

a) Toe guard switch, or wire, broken.

b) Solenoid coil is bad.

a) Same as above.

a) Bleed air per procedures described

in this manual.

b) Check for a toe guard extrusion or

rubber corner that is stuck. Adjust if necessary.

a) Inspect visually, check with

multimeter. Repair as needed.

b) Check with multimeter on

diodecheck function. (Reading for ohms will not provide an accurate test of the coil.)

Page 15

PROBLEM

POSSIBLE CAUSE(S)

c) Physical blockage of the structure.

d) Solenoid valve or suction hose

screen plugged.

ACTION

c) Inspect for foreign material or

objects that might block the leg set or its rollers.

d) Remove and inspect. Clean per

instructions in this manual.

7) Platform lowers too slowly.

8) Platform lowers too quickly.

CAUTION:

Do not use brake fluid or jack oils in the hydraulic system.

a) Pinched hose.

b) Velocity fuse locking (platform

only slowly creeps down).

c) Flow control spool sticking.

a) See last paragraph, above

a) Check pressure, supply, and return

hoses for kinks.

b) Same as for jerky platform

movement.

c) Remove plug from FC port; push

on flow spool to ensure it is fully pressed into the cavity. Pull and clean the spool if necessary.

a) Same as above.

If oil is needed, use an anti-wear

hydraulic oil with a viscosity grade of 150 SUS at 100°F (ISO 32 at 32°C) or a non-synthetic transmission fluid.

LIMITED WARRANTY

ONE YEAR LIMITED WARRANTY. The manufacturer warrants for the original purchaser against defects in materials and workmanship under normal use one year after date of purchase. (Not to exceed 15 months after date of manufacture.) Any part which is determined by the manufacturer to be defective in material or workmanship and returned to the factory, shipping costs prepaid, will be, as the exclusive remedy, repaired or replaced at our option. Labor costs for warranty repairs and/or modifications are not covered unless done at manufacturer’s facilities. Any modifications performed without written approval of the manufacturer may void warranty. This limited warranty gives purchaser specific legal rights which vary from state to state.

E N G

S H

LIMITATION OF LIABILITY. To the extent allowable under applicable law, the manufacturer’s liability for consequential and incidental damages is expressly disclaimed. The manufacturer’s liability in any event is limited to, and shall not exceed, the purchase price paid. Misuse or modification may void warranty.

WARRANTY DISCLAIMER. Our company has made a diligent effort to illustrate and describe the products shown accurately; however, such illustrations and descriptions are for the sole purpose of identification, and do not express or imply a warranty that the products are merchantable, or fit for a particular purpose, or that the products will necessarily conform to the illustrations or descriptions.

The provisions of the warranty shall be construed and enforced in accordance with the UNIFORM COMMERCIAL CODE and laws as enacted in the State of Indiana.

DISPOSITION. Our company will make a good faith effort for prompt correction or other adjustment with respect to any product which proves to be defective within the Limited Warranty. Warranty claims must be made in writing within said year.

Page 16

WARNING LABEL IDENTIFICATION

MAKE SURE ALL WARNING LABELS ARE IN PLACE!

NOTE:

Labels 1 & 7 are located on junction box cover

NOTICE NOTA AVIS

POWER SUPPLY: 115 Volt/1 Phase/60 HZ CONTROL VOLTAGE: 24 VOLT AC CORRIENTE: 115 Volt/1 Fase/60 HZ VOLTAJE DE CONTROL: 24 VOLT CA ALIMENTATION ÉLECTRIQUE: 115 Volt/1 Phase/ 60 HZ VOLTAGE DE CONTRÔLE: 24 VOLT AC

ON HYDRAULIC TANK (NOT SHOWN)

248

1, 7

*Product safety signs or labels should be periodically inspected and cleaned by the product users as necessary to maintain good legibility for safe viewing distance . . . ANSI 535.4 (10.21) Contact manufacturer for replacement labels if needed.

DANGER

PELIGRO

DANGER

SHUT POWER OFF AND CONSULT OWNERS MANUAL BEFORE WORKING ON THIS EQUIPMENT

CORTE LA CONSULTE Y CONSULTE EL MANUAL DEL PROPIETARIO ANTES DE TRABAJAR EN ESTE EQUIPO

COUPER LE COURANT ET CONSULTER LE MANUEL D’UTILISATION AVANT DE TRAVAILLER SUR CET ÉQUIPEMENT

TO AVOID PERSONAL INJURY READ

DANGER

PELIGRO

ATTENTION

OWNER’S MANUAL BEFORE OPERATING OR REPAIRING SCISSOR LIFT

PARA EVITAR DAÑOS PERSONALES LEA EL MANUAL DEL PROPIETARIO ANTES DE OPERAR O REPARAR EL ELEVADOR DE TIJERAS

POUR ÉVITER TOUTE BLESSURE PERSONNELLE LIRE LE MANUEL D'UTILISATION AVANT DE METTRE EN MARCHE OU AVANT DE RÉPARER L’ÉLEVATEUR CISEAU

SECURE FRAME

KEEP CLEAR

WHEN IN USE

BOTH SIDES & FRONT END

WARNING

KEEP CLEAR OF

PINCH POINT

PARA INSTRUCCIONES DE USO Ó CONSULTAS CONTACTAR

221

DO NOT PUT HANDS, FEET OR OBJECTS UNDER TOP. LOWER PLATFORM SLOWLY.

NO PONGA MANOS, PIES U OBJECTOS DEBAJO DEL BORDE. DESCIENDA LA PLATAFORMA LENTAMENTE.

NE PAS METTRE LES MAINS, LES PIEDS OU TOUT OBJET SOUS LE PLATEAU SUPÉRIEUR. DESCENDRE LA PLAT-FORM LENTEMENT

POUR INSTRUCTIONS OU QUESTIONS SUPPLÉMENTAIRES CONTACTER

VESTIL MANUFACTURING. • P.O. BOX 570 ANGOLA, IN 46703 • 1-800-348-0860 OR 260-665-7586205

ISO AW-32

HYDRAULIC OIL OR EQUIVALENT

ACEITE HIDRÁULICO O EQUIVALENTE

HYDRAULIQUE OU ÉQUIVALENT

WARNING

TO FLOOR

WARNING

MANTENGASE ALEJADO DE

PUNTO DE CORTE

FOR USER INSTRUCTIONS OR QUESTIONS CONTACT

DO NOT WORK UNDER LIFT WITHOUT SAFETY BLOCK OR WHILE LOADED. KEEP CLEAR OF MOVING SCISSOR LEG MECHANISM.

NO TRABAJE DEBAJO DEL ELEVADOR SIN LOS FRENOS DE SEGURIDAD O CUANDO ESTÉ CARGADO. MANTENGASE ALEJADO DEL MECANISMO DE TIJERA EN MOVIMIENTO.

NE PAS TRAVAILLER SOUS L’ÉLEVATEUR SANS BLOCS DE SÉCURITÉ OU LORSQU’ IL EST CHARGÉ. RESTER À L’ÉCART DU MÉCANISME CISEAU LORSQUE L’ÉLEVATEUR EST EN FONCTIONNEMENT.

AVISO

ASEGURE EL

BASTIDOR AL PISO

AVISO

MANTENGASE

ALEJADO CUANDO

SE ESTA OPERANDO

AVISO

AVERTISSEMENT

FIXER SOLIDEMENT

LE CADRE AU PLANCHER

AVERTISSEMENT

SE TENIR À DISTANCE

LORS DU

FONCTIONNEMENT

AVERTISSEMENT

SE TENIR À DISTANCE DU

POINT DE PINCEMENT

207

206

204

220

208

DO NOT STAND, SIT OR RIDE ON LIFT

NO SE SIENTE, SE PARE,O VIAJE EN EL ELEVADOR

NE PAS SE TENIR DEBOUT, S’ASSEOIR OU MONTER SUR L’ÉLEVATEUR