Global Industrial 293230 User manual

USER MANUAL
Low Profile Power Scissor Lift Table
Model no. 293230, 293231
Owner/Operator must read and understand this manual

1
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 small structure
distortion.
◇Do not use in an explosive or flammable place.

2
2. 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.
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.

3
◇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
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,

4
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
5.SPECIFICATIONS
Model
Capacity
(lbs)
Lowered
Height
(in.)
Raised
Height
(in.)
Platform
Length
(in.)
Platform
Width
(in.)
Lift Time (Sec)
Motor
Net Weight
(lbs)
Horsepower
(HP)
Voltage (V)
293230
2200
3.4
33.8
57
44
15~25
1P/0.75KW
110
785.4
293231
2200
3.4
33.8
57
31
15~25
1P/0.75KW
110
717.2
6.HYDRAULIC CIRCUIT & ELECTRIC PRINCIPLE DIAGRAM
See Figure 1 & Figure 2.
Fig. 1 Hydraulic circuit

6
No
Type
Name
Description
Qty
1
LB01
Controlpowertransformer
DF30-110V-460V/0-24V 50VA
1
2
F1 F2
Fast melter
5A
2
3
VD1
Rectifier
RS-2510
1
4
VDR1
Voltage dependentresistor
10K/471 10K/821
1
5
R1
Resistor
1.8K/1W
1
6
C1
Electrolytic condenser
1000uF/63V
1
7
KM01
AC contactor
BC-30-10
1
8
KA1 KA2
Middle relay
SRC-24VDC-SH
2
9
D1 D2 D3 D4 D5 D6 D7
Silicon rectifying diode
IN4007
7
10
DF01
Electromagnetic valve
DC24V
1
11
SB3
Emergency stop button
XB2-ES542C+ZB-BY9101
1
12
SB2
Down button
XB2-BA21C
1
13
SB1
Up button
XB2-BA21C
1
14
SQ1
Up limit switch
D4V-8108Z
1
15
SQ2
safety switch
2
16
SQ9
Down limitswitch
D4V-8108Z(Prepared by customer)
1
17
M101
Pump motor
1
18
QF101
Circuit breaker
C45N3P 25A(Prepared by customer)
1

7
19
R6
Resistor
100/0.5w
1
20
R4
Resistor
10K/0805
1
21
R5
Resistor
1K/0805
1
22
RW01
Rheostat
50K
1
23
WD01
Stabilovolt tube
3.3V
1
24
C3 C4 C7 C8
Electrolytic condense
10uf/50V 10uf/16V
3
25
IC01
Integrated circuit
LM358
1
26
U04
Integrated circuit
KA7812
1
27
U02 U03
Electric dipole
P521
2
28
TA01
Current transformer
20A
1
29
R9 R10
Resistor
24K/0805
2
30
R8
Resistor
5.1K/0805
1
31
R11
Resistor
300K/0.5W
32
C5 C6
Electrolytic condenser
0.015uF/1000V 0.01uF/1000V
2
33
Q0
2
Q02
Audion
D882
1
Fig. 2 Electric Principle Diagram（3P）

8
No
Type
Name
Description
Qty
1
LB01
Controlpowertransformer
DF30-110V-460V/0-24V 50VA
1
2
F1 F2
Fast melter
5A
2
3
VD1
Rectifier
RS507（5A）
1
4
VDR1
Voltage dependentresistor
10K/471 10K/821
1
5
R1
Resistor
1.8K/1W
1
6
C1
Electrolytic condenser
1000uF/63V
1
7
KM01
AC contactor
BC-30-10
1
8
KA1 KA2
Middle relay
SRC-24VDC-SH
2
9
D1 D2 D3 D4 D5 D6
Silicon rectifying diode
IN4007
6
10
DF01
Electromagnetic valve
DC24V
1
11
SB3
Emergency stop button
XB2-ES542C+ZB-BY9101
1
12
SB2
Down button
XB2-BA21C
1
13
SB1
Up button
XB2-BA21C
1
14
SQ1
Up limit switch
D4V-8108Z
1
15
SQ2
safety switch
2
16
SQ9
Down limitswitch
D4V-8108Z(Prepared by customer)
1
17
M101
Pump motor
1
18
QF101
Circuit breaker
C45N3P 25A(Prepared by customer)
1
19
R6
Resistor
100/0.5w
1
20
R4
Resistor
10K/0805
1
21
R5
Resistor
1K/0805
1
22
RW01
Rheostat
50K
1
23
WD01
Stabilovolt tube
3.3V
1
24
C3 C4 C8
Electrolytic condense
10uf/16V-10uf/50V
3
25
IC01
Integrated circuit
LM358
1
26
U04
Integrated circuit
KA7812
1
27
U02
Electric dipole
P521
1
28
TA01
Current transformer
20A
1
29
R9
Resistor
24K/0805
1
30
R8
Resistor
5.1K/0805
1
31
Q02
Audion
D882
1
Fig. 2 Electric Principle Diagram（2P）

9
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 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
every3monthslater
After every 2000
hours’ working or
everyyear
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.

10

11
8.TROUBLE SHOOTING
Note: Before service it is necessary to screw two eyebolts into relevant
screw-holes on the basis when the table is in the highest position, lest
the table lowers accidentally
The brand of oil is ISO HL32(such as Rando oil R＆O32、D.T.E. oil
light、Turbo32)
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
◇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
◇Eyebolt has not been
removed
◇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
◇Remove eyebolt
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

12

PART LIST: MODEL NO. 293230, 293231
No. Description Qty No. Description Qty
1 Table 1 50 Roller 4
2 Safety guard 1 51 Axial bush 2
3 Nylon washer 4 52 Middle roller 2
4 Bolt M6x50 4 53 Roller axle 2
5 Locknut M6 4 54 Spring pin φ4×40 2
6 External scissor 1 55 Screw M3x10 8
7 Bush 2 56 Control switch 1
8 Nylon washer 2 57 Hydraulic-pump unit base 1
9 Washer 2 58 Control wire 1
10 Locknut M24 2 59 Plug 2
11 Axial cover 2 60 Electrical box 1
12 Screw M5x16 4 61 Washer 5 4
13 Middle axle 2 62 Spring washer 5 4
14 Short wheel 4 63 Screw M5x10 4
15 Short bush 4 64 Pipe-joint 1
16 Switch 5 65 Seal ring 14 2
17 Washer 3 28 66 Hydraulic power pack 1
18 Screw M3×25 14 67 Washer 10 2
19 Spring pin 5x50 4 68 Spring washer 10 2
20 Retaining ring 20 2 69 Screw M10x20 2
21 Long wheel 2 70 Height pressure hose Ⅰ 1
22 Long bush 2 71 Plug 1
23 Nylon wheel axle Ⅰ 2 72 Socket 1
24 Internal scissor 1 73 Switch wire 1
25 Screw M6x10 3 74 Height pressure hose Ⅱ 1
26 Eyebolt 3 75 Seal ring 14 2
27 Nylon wheel axle Ⅱ 2 76 Ball valve 1
28 Screw M5×12 6 77 Height pressure hose set 1
29 Washer 5 2 78 O-ringφ10x1.8 1
30 Mounted plate 1 79 Joint pin 2
31 Chassis 1 80 Seal ring 12 4
32 Bush 2 81 Joint bolt 2
33 Anti-explosive valve 2 82 Long tube assembly 1
34 Cylinder tube 2 83 T joint 1
35 Piston 2 84 Short tube assembly 1
36 Snap Ring 25 2 85 Screw M6x12 3
37 Piston rod 2 86 Spring washer 6 3
38 Cylinder cover 2 87 Washer 6 3
39 O-ring φ55x2.65 2 88 Power-unit cover 1
40 Snap Ring 60 2 89 Plastic joint 1
41 Lager axial bush 2 90 Rubber bush 1
42 Packing Assembly 2 91 Terminal Blocks 4
43 O-ring φ25x2.65 2 92 Cable clam
p
2
44 Packing UHS25 2 93 Washer 4 2
45 Retaining ring 55 2 94 Screw M4x6 2
46 Roller base 2 95 Coiled cable 1
47 Spring pin φ6x35 2
48 Retaining ring 22 4
49 Small axial bush 4
13