Vestil EHU-2 Manuale utente

INSTRUCTION MANUAL

EHU-2 & EHU-3

VESTIL MANUFACTURING CORP.

2999 NORTH WAYNE STREET, P.O. BOX 507, ANGOLA, IN 46703

TELEPHONE: (260) 665-7586 -OR- TOLL FREE (800) 348-0868

FAX: (260) 665-1339

URL: WWW.VESTILMFG.COM EMAIL: SALES@VESTIL.COM

THANK YOU VERY MUCH FOR SELECTING OUR PRODUCT. THIS

INSTRUCTION MANUAL DESCRIBES CORRECT OPERATING METHOD TO

ENSURE PROLONGED SERVICE LIFE. PLEASE READ AND COMPLETELY

UNDERSTAND THIS MANUAL BEFORE OPERATING THE LOW PROFILE

LIFT TABLE. ALWAYS KEEP THIS MANUAL AT AN APPROPRIATE PLACE. IF

THE MANUAL OR WARNING DECAL IS MISSING, PLEASE CONTACT WITH

DEALER.

Note: This manual has been prepared for skilled and competent personal. It provides instructions for

using the product correctly and parts list. This Manual cannot replace the professional skills and

expertise of the user.

1. WARNING! If operating the lift table improperly, a

person may be seriously! Injured. Therefore, operate

properly according to the following instruction

◇ Read & thoroughly understand the instruction manual completely before using. Follow all

safety instructions strictly.

◇ It is necessary to check all safety devices before operation.

◇ Make sure that there are no obstacles in the working area.

◇ Do not put foot or hand in scissors mechanism or through frame.

◇ Screw the lifting eyes on the base frame before working on the lift table.

◇ Do not overload the lift table. Load should be distributed on the table according to relevant

load distribution chart.

◇ Pay attention if local voltage and frequency is as same as the input specification of the lift

table.

◇ Use the lift table on flat and solid ground.

◇ All the electrical connection and disconnection operations must be carried out by skilled

and competent personal.

◇ While operation, it is forbidden to contact the moving parts of the lift table.

◇ While the lift table moving, it is forbidden to adjust or to move the load

◇ It is forbidden to lift the load, which perhaps does harm to a person or other object.

◇ It is forbidden to operate the lift table while a person is under the table.

◇ Do not adjust the safety valve of hydraulic power pack.

◇ It is forbidden to operate the lift table even if there is underf the table.

◇ Do not adjust the safety valve of hydraulic power pack.

◇ It is forbidden to operate the lift table even if there is small structure distortion.

◇ Do not use in an explosive or flammable place.

2. CAUTION! Operating the lift table improperly can cause

accident. Operate properly according to the following instruction.

◇ The lift table is just for raise and lower purpose. Do not use it for any other purpose.

◇ Do not allow a person to operate the lift table, who does not understand its operation.

◇ It is forbidden to change the lift table without manufacture’s written admission.

◇ It is necessary to use the spare parts designated by manufacturer.

◇ Make sure to keep a distance between the table and ambient objects enough to operate the

lift table safety.

◇ Keep the hydraulic system under clean and safe condition.

◇ The hydraulic power pack features an electric lowering control those coils. The coils must

be fed with the power supply voltage should not exceed + 10% of the rated required

voltage.

◇ Always do maintenance and routine check while the lift table is unloaded.

◇ The lift table is not waterproof and should be used in a dry environment.

3. DAILY INSPECTION

Daily inspection is effective to find the malfunction or fault on the lift table. Before operation,

check the lift table according to the following points.

CAUTION! Do not use the lift table if any

malfunction or fault is found.

◇ Check all the terms of WARNING and CAUTION.

◇ Check scratches, bending or crack on the lift table.

◇ Check smooth movement of the table.

◇ Check if there is any hydraulic oil leakage.

◇ Check the vertical creep of the table.

◇ Check if all the bolts and nuts are firmly tightened.

4. Operating the lift table

■LOADING

The maximum capacity of the lift table is 2,000/3,000 lbs load should be distributed on the

lift table equably.

■ Lifting the Table

CAUTION! Do not overload the lift table. Ensure the

balance of loading. Do not load partially or

concentrically

◇ Screw and loose emergency stop switch.

◇ Push the UP button and power pack starts to work to lift the load.

◇ Loose the UP button and power pack stops working.

■Lowering the Table

WARNING! Do not put foot or hand in scissors mechanism.

◇ Push the DOWN button and the table will lower.

◇ Loose the DOWN button and the table will stop.

NOTE

◇ The table is equipped with an aluminum guard to avoid accidental danger.

◇ If aluminum guard strikes an object while the table lowers, stop operation and check the lift

table. After making sure no any abnormality, strike the UP button slightly and then the

electric system will function as before.

◇ Emergency stop

◇There are two methods of emergency stop as follows.

◇ Push down the emergency stop switch and the movement of table stops.

◇ Strike aluminum guard upward and the movement of table also stops.

■ Transportation

If necessary, the lift table can be transported with attached ringbolts.

◇ Pay attention to the maximum capacity of lifting equipment to be used.

◇Keep the ringbolts with reasonableness.

5. HYDRAULIC CIRCUIT & ELECTRIC

PRINCIPLE DIAGRAM

See Figure 1 & Figure 2

Fig. 1 Hydraulic circuit

Fig. 2 Electric Principle Diagram

6. Specification

Model EHU-2 EHU-3

Capacity (lbs) 2,000 3,000

Min. Height (inch) 3½ 4¼

Max. Height (inch) 33½ 33½

Platform Outside Dimensions Law (inch) 55¾ x 52¾ 63 x 53½

Platform Inside Dimensions LxW (inch) 41¼ x 29⅞ 44¼ x 29⅞

Base Outside Dimensions LxW (inch) 52¼ x 50⅝” 54¼ x 50⅝”

Base Inside Dimensions LxW (inch) 42⅛ x 34⅜ 44 x 34½

Unloaded 16.2 21.5

Raise Time (secs) Loaded 16.8 22.8

Unloaded 22.9 31.3

Down Time (secs)

Loaded 22.7 31.2

Output (w) 1500 1500

Voltage (v) AC110V 60HZ

Revolution (r/min) 1.66cc/rev

Protection Class IP.54

Motor

Insulation Class F.

Net Weight (lbs) 630 850

3.3cc/rev

7. SERVICE INSTRUCTIONS

■ Do routine check of fasteners, packing and oil leaking.

■ Do routine check of the function of the lift table.

■ Before service the lift table, make sure to turn off the AC power supply.

■ After service it is necessary to check the function of the lift table again.

■ ONLY a qualified personnel can do service work.

■ Do routine check of the micro-switches on the safety guard.

■ Do routine check of the hydraulic system by listening its noise, touch motor’s surface.

■ Caution: It is necessary to turn off theAC power supply before touch motor’s surface.

■ Pay attention to clear or even replace the oil filter after operating for a long time.

■ Appropriate lubrication is necessary to make the lift table work easily and have a prolonged

service lift.

■ Following table is recommended to service the lift table periodically.

Content After every 500 hour’

working or every 3

months later

After every 2000

hours working or

every year

Check oil level of oil tank ☆

Check the cleanliness of oil filter ☆

Fasten all the connecting parts again ☆

Check wear and tear of pressure oil pipes ☆

Check hydraulic cylinder ☆

Fix main parts tightly again ☆

Check the function of micro-switches ☆

Check whole working state of the lift table ☆

Lubricate all the joints and pivot points ☆

Check wear and tear of all axial bushes ☆

Replace hydraulic oil for the first time Accumulated working ten hours’

Replace hydraulic oil ☆

Check oil leaking ☆

Remark:

☆

stands for proceeding the item.

8. TROUBLE SHOOTING

Note: Before service it is necessary to screw two eyebolts into relevant screw-holes

on the basis lest the table lowers accidentally.

Trouble Cause Remedy

Table cannot lift

while motor works

normally

◇Eyebolt has not been removed

◇AC Voltage phrases mistake

◇Electromagnetic dysfunctions

◇The table is overloaded

◇Remove eyebolt

◇Correct AC voltage phrase

electromagnetic valve and repair it

◇Remove excessive load

Table cannot lift and

motor does not work

◇Lowering limit switch (if switched)

damaged

◇Replace limit switch

Table cannot lower

◇Lowering limit switch or micro-switch

on safety guard damaged

◇Electromagnetic valve dysfunctions

◇Safety guard works

◇Something wrong with electric

circuit board

◇Replace lowering limit switch

switch or micro-switch.

◇Check the function of

electromagnetic valve and repair it

◇Strike the UP button slightly

◇Replace electric circuit board

Table’s legs go over

limit position (if

existed) while table

lowers

◇Internal leaking in electromagnetic

valve

◇Packing damaged in hydraulic

cylinder

◇Repair electromagnetic valve and

if necessary replace it

◇ Check and replace packing

Table cannot reach

the highest position

◇Oil not enough

◇Limit switch damaged

◇ Fill enough oil

◇Check and repair limit switch. If

necessary, replace it

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