Mayi Industries HW Series Low Profile Lift Table Instruction Manual

Mayi Industries HW Series Low Profile Lift Table

Product Information

The HW Series lift table is a hydraulic lifting device that is designed to lift loads up to 1000kg. The lift table has a lowered height of 200mm and can be raised to a maximum height of 200-300mm depending on the model. The platform length is 1220mm and the
platform width is either 610mm or 1220mm depending on the model. The lift table is powered by an AC motor with power output ranging from 1.1KW to 2.2KW depending on the model.

Product Usage Instructions

• Before using the lift table, it is important to read and understand the instruction manual completely. Follow all safety instructions strictly and check all safety devices before operation. Ensure that there are no obstacles in the working area and do not put foot or hand in scissors mechanism or through frame.
  Daily inspection is effective to find any malfunction or fault on the lift table. Check all the terms of warning and caution, scratches, bending or crack on the lift table, smooth movement of the table, hydraulic oil leakage, vertical creep of the table, and if all the bolts and nuts are firmly tightened. Do not use the lift table if any malfunction or fault is found.

• When loading the lift table, ensure that the load is distributed evenly and not overloaded. Do not load partially or concentrically. To lift the load, screw and loosen the emergency stop switch, push the UP button and the power pack starts to work to lift the load.

• Loosen the UP button and the power pack stops working. When lowering the table, do not put foot or hand in scissors mechanism.

• Periodic service of the lift table is necessary to make it work easily and have a prolonged service life. Refer to the recommended table to service the lift table periodically. In case of any trouble, screw two eyebolts into relevant screw-holes on the basis lest the table lowers accidentally.

Note: Owner/Operator must read and understand this instruction manual before using the lift table.

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.

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 small structure distortion.
• Do not use in an explosive or flammable place.

CAUTION! If operating the lift table improperly, a person may be injured. Therefore, operate properly according to the following instruction.

• The lift table is a movable lifter designed to lift or lower rated load. Do not use it for 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 manufacturer’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 safely.
• Keep the hydraulic system under clean and safe condition.
• The hydraulic power pack features an electric lowering control. The coils must be fed with the required voltage as described on those coils. 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.

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.

Operating the lift table

LOADING
The maximum capacity of the lift table is 1000kg. 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.

SPECIFICATIONS

AC1.1KW

| 115V/60HZ

AC1.1KW

| 115V/60HZ

AC2.2KW

Net Weight| (kg)| 180| 235| 285

HYDRAULIC CIRCUIT & ELECTRIC PRINCIPLE DIAGRAM

See Figure 1 & Figure 2.

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 the AC 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 life.
• Following table is recommended to service the lift table periodically.

Content

| After every 500 hours’ 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.

TROUBLESHOOTING

Note: Before service it is necessary to screw two eyebolts into relevant screw-holes on the basis lest the table lowers accidentally.

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

◇   Check the function of electromagnetic valve and repair it

◇   Remove excessive load

Table cannot lift and motor does   not

work

|

◇   Lowering limit switch (if existed) 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 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

2G SERIES PARTS LIST

YBZ-C4.2ZH2∕ MBABT

| 1| 220v,            380v

415V ，or115V

E01| Electric box|  | 1|
H01| Hydro-cylinder| φ80-40| 1|
H01-02| Magnet-value|  | 1| Optional

3GERIES PARTS LIST

set

| SF10-10F 40260| 2|
17| Table|  | 1|
18| Roller| HW2001-06-00| 4|
19| Inside             scissor

assembling

|  | 1|
20| Outside         scissor

assembling

|  | 1|
21| Limit of the inner ring| HW2001-02-02-01| 2|
22| Short shaft rod|  | 2|

23| Cotter pin| φ5×35| 2|
---|---|---|---|---
24| Limit pin| HW2001-02-05| 1|
25| Limit pin| HW2001-02-06| 1|
S01| Safety frame|  | 4|
S02| Safety switch| LX12-2| 2|
S03| Fixed bolt| M4X20| 4|
S04| Self-locking nut| M8| 4|
S05| Fixed-board|  | 4|
S06| Spring| HW2001-17-00| 4|
S07| Fixed-piece| HW2001-16-00| 4|
S08| Sheet rubber| HW2001-13-00| 4|
P01| Hydraulic power pack| 2.2KW YBZ-C4.2ZH2∕

MBABT

| 1| 220v,  380v,  415V  ，

or115V

E01| Electric box|  | 1|
H01| Hydro-cylinder| φ80-40| 2|
H01-01| Magnet-value|  | 1| Optional

Hydraulic power pack list

415V

2| Agitating device| YBZ-CP9T-K-50| 1|
3| Pump frame| LBZ-N2FK-1| 1|
4| O ring| EKM 61.5| 1|
5| Hexagonal sockethead plug| YBZ1-PG02A| 1|
6| Check valve| DF08-01-00| 1|
7| Solenoid valve| LSV-08-2NCP-3D| 1|
8| Built-in balancing valve| BL-I2.0| 1|
---|---|---|---|---
9| Light type spring washer| GB/T859-1987| 4|
10| Soket head cap screw| GB/T70.1-2000 M640| 4|
11| O ring| EKM 1143| 1|
12| Gear oil pump| CBKA-F2.1F| 1|
13| Filter oil components| YBZ-4-100| 1|
14| Soket head cap screw| GB/T70.1-2000 M880| 2|
15| Light type spring washer| GB/T859-1987| 2|
16| Washer| GB/T95-1985| 2|
17| The inlet pipe| YBZ-4-003| 1|
18| Vent hood components| YBZ-BT-G3/8”| 1|
19| Hydraulic tank group| KR12W 2L| 1|
20| Hexagon bolt with flange| GB/T5787-1986 M58| 4|
21| Oil return pipe| YBZ-D5B4H2/1-02| 1|
22| O ring| A-046 107.671.78| 1|
23| Bolt| JB/ZQ4450-1997

M20*1.5

| 1|
24| Combined          sealing

washer

| JB982-77 20| 1|
25| Hydraulic| LHRV-08-42| 1|

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