VEVOR WX4400LBS-2 User manual

Technical Support and E-Warranty Certificate www.vevor.com/support
ELECTRIC CHAIN HOIST
OPERATING MANUAL
WX4400LBS-2
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actually saving half in comparison with the top major brands.

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WX4400LBS-2
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This is the original instruction, please read all manual instructions
carefully before operating. VEVOR reserves a clear interpretation of our
user manual. The appearance of the product shall be subject to the
product you received. Please forgive us that we won't inform you again if
there are any technology or software updates on our product.
ELECTRIC CHAIN HOIST

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The symbols used in this manual are intended to alert you of the possible risks.
Please fully read the safety signs and instructions below.
The warning themselves do not prevent the risks and can not be a substitute for
proper methods of avoiding accidents.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:(1) This device may not cause harmful
interference,and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Safety First
Any hoisting equipment may have potential risks to cause personal injuries or
property damage.
If operators do not follow the proper operation instructions and pay no attention to
precaution,the occurrence of risks will greatly increase.Thus it is required that
every operator should read through and be familiar with the operation manual and
precautions before operation to ensure the safe operation.
If any part of the manual has the alarming signs as indicated at the right and left
and the part is underlined, it indicates that the part is vital safety description or
precaution. And operators must fully followed, otherwise, it may endanger the
operators or others or property.
Hence,before operate electric chain hoist, please read through the manual and
precautions.
1. Preface
The manual can assist you in correct installing operating and maintaining your
electric chain hoist. Ensure your hoist to operate safely with the highest efficiency.
Before you use the hoist, please read through the manual to know about the
correct procedure and operation, as well as preventative maintenance to
guarantee you to have faithful and reliable service.

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2. Main Specifications
2.1 Table of Specifications
Item
Range of working humidity(%)
Range of working temperature('C)
Protection class
Hoist
Push button
Power supply
Noise degree(dB)
Single speed hoist
Chain specifications
Limit working load
4400 LBS
Specification
50 or below50
-10-+40
Ip54
Ip54
3 phase,220V,60Hz
70
Nominal
diameter(mm)
Chain Internal
length(mm)
10
30
Remarks
(1) If your working temperature and humidity are out the range of the value in the
table, please ask your distributor for related data.
(2) Expected operation ways:The hoist is designed to vertically lift in normal
atmosphere and working conditions.
(3) The standard of noise degree is the value measured at 1 meter from the
machine under the normal operation.

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2.2 Safety Devices
1）Side magnetic braking device
It is a unique design which is characterized with the ability that the brake acts
immediately as soon as the electric power is cut off.
2）Hooks and Safety Latch
The hook is hot forging with high tensile steel and heat treated to meet the
demands on strength and hardness.The operation safety of the lower hook is
ensured by its 360° degrees rotation and safety latch.
3）Anti-phase Protecting Device
It is special design to control the circuit not to work and protect the electric motor
from being burned in case of wiring error in the power supply.
4）Limit Switch
It is installed where the weights are lifted on and off to make the motor stop
automatically so as to prohibit the chains from exceeding for safety.
Model
Rating
lifting
Lifting
height
Chain
diameter
Lifting
speed
Power supply
WX4400LBS-2
4400LBS
20FT
10mm
26Ft/min
3 phase，220v，
60HZ，3.0kw
Model
Rating
lifting
H
A
B
D
E
I
J
K
L
M
N
WX4400
LBS-2
4400LBS
800MM
620MM
310MM
430MM
265MM
Φ49
35
Φ49
35
30
30

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3.Safety Rules
Danger
The hoist is not designed for supporting loading persons .Any modification, which
includes upgrade and lifting speed change or any hoist designchange, must be
done by original manufactory or qualified professional engineer.
Danger
It is forbidden to operate the hoist under the explosive environment.
1）Person who have related training and experience can operate the hoist
2）Before operation , please confirm the followings:
a）Use the proper lifting rope .
b）The location of the cable should be as indicated in the following diagram (fig.3.1)

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and the safety latch must lock the hook correctly .
c）Make sure the weights safe and firm ,then lift it
3）The button must be operated stably and firmly .
4）Try my best to avoid excessive inching operation .
5）Be sure that the motor has been completely stopped before operating in the
reverse direction.
6）When having finished operation, keep the control cable and the lower hook
vertically and statically.
7）When lifting, the weights must be kept balance .Never lift the weight which are
not in balance .
8）It is forbidden to drag the weights horizontally.(see Fig 3.2)
9）It is forbidden to lift the weights by using the chain to bind the weights .(see Fig
3.3)
10 ）When in operation, the operators must face and pay attention to the
weights .Be sure not to turn back to or overlook it .
(11)It is risky to lift the weights over the rated load capacity. And it should not be
tried .
(12)Do not lift goods when the chain is twined .
(13)Regular inspection to ensure chain is in a good condition, if the chain is
damaged, don't operate hoist to lift the weights.
Warning
Never use the chain as a welding electrode

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Warning
Never stand under when lifting
4. Installation
4.1Voltage
Note
If the voltage of power supply is over or less 10% than standard voltage to operate
hoist under the abnormal voltage will result in motor damage , hence , before
operation , be sure to confirm whether the voltage of power supply is within the
standard range.
4.2 Installation
Warning
It is forbidden to link the power supply before the completion of installation .
Before installing the hoist , please confirm the whole upper hook assembly has
been firmly assembled to the hoist body (ensure the chain connection pin is
installed properly).
Remarks :If the hoist is equipped with electric trolley, the first step (to separate the
upper hook from the hoist body) can be omitted, and it is only required to install the

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hoist between two side plates of trolley, and lock the upper hook.
Assemble chain bag (Fig.4.1)
Link the power supply and operate the push button. The procedure should be
performed by professional trained person .(Fig.4.2)
Fig 4.1
4.3 Operation Test
a) Press the(S) push button to lower the hoist until the limit spring touches the limit
switch, and the motor will stop automatically .
b) Press the(D) button until the chain are totally in chain bag and the motor stops .
c) Test the function of the emergency stop switch (if the emergency stop switch is
selectively purchased )Press button (J) or (S), and press the emergency stop
switch at the same time to check whether the hook can stop immediately .When
the emergency switch is pressed ,there will be no response when any other button

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is pressed .Finally ,turn the emergency switch in clockwise and it will bounce back
to the original position .When it bounces back, the hoist can be operated again if
any of the above -mentioned tests is abnormal , it is required to check the
distribution circuit and the self-locking of the emergency switch .
d) Check the direction of chain. All welding points should be of the same
direction .(Fig 4.3). The operation can not be utterly proper unless all the welding
points of chain are in the same line .
Note
If the chain fall is double or ever number, it is forbidden to hang the lower hook in
the reverse direction to avoid dangers(Fig. 4.4).

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e) Chain lubrication
The degree of chain lubrication plays an important role on chain's service life .It
needs to apply machine oil or gear oil regularly to prolong the chain's service life.
The process of lubrication:
a) Keep chain vertically without load .
b) Erase dust and water stains on chain .
c) Lubricate each link of chain connection and load pulley. After the lubrication, lift
the chain up and down without load in order to daub lubrication equably. (Fig.4.5)
Fig.4.5
Danger
5. Operation
After the above-mentioned test and operation testing, the hoist can be normally
operated.
Warning
It is forbidden to link the power supply before the completion of installation.
6.Maintenance and Overhaul

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Except monthly examination about performance of brake and limit switch, never
have it maintained under loading condition.
Danger
Before maintenance, be sure to lable"danger"and"overhaul" on the power supply
and controller.
6.1 Maintenance
1) When the gear operation times reaches more than 500 hours, check the amount
of lubrication, and later check the lubrication every 3 months regularly.
Remarks: we recommend that using the engine oil same as grade ISOVG46 oil.
2) Check the dryness of the hoist parts frequently, and forbid to abuse the hoist;
otherwise, its durability may be reduced.
3) If it is operated outdoors, please add a protection cover.
6.2 Overhaul
(1) Daily inspection:before daily operation, please check the following items:
1) Proper power supply.
2) Test the "up", "down" and "emergency stop" (if installed) without load.
3) The motor works normally.
4) There is no abnormally or excessively high noise.
5) The safety latch of the lower hook functions properly and is free of faults.
6) The rotatable or movable parts and the limit switch as well as the brake function
normally.
7) The chain is lubricated well.
(2)Monthly inspection
Warning
In maintenance,please use the original parts recommended by the manufacturer.
(a) Chain
Any distorted, extended, or worn chain will not be good locked with chain wheel,

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result in the breakdown or disengaging of the chains. To ensure the safe and
normal operation, the internal length and width, external width of the chain must be
checked monthly. If in the following situation, the chain must be replaced.
1) The internal length of the chain (p) is worn and extended 5% higher than the
values as listed in Table 6.1
2) The wearing of the diameter of the chain link (d) is lower than the value listed in
table 6.1 (The wearing of nominal diameter reaches 10% higher than the original
one)
****** When the wearing of chain is high, be sure to confirm the wearing of the
chain wheel and chain guide ******
Diameter(mm) (d)
Capacity (LBS)
Internal length
(mm)(P)
Internal width
(mm) (a)
External width
(mm)(b)
10.0
4400
30
12.5
35
(b) Hoist hook
Check the hook carefully. Its crack or distortion is over 5% than original one, it
should be replaced. (Please refer to the sizes in the following table)

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Capacity
(LBS)
a
b
c
d
e
g
4400
46
29
39
30
49
40
(C) Limit switch
Warning
It should be inspected by qualified electrician.
Check whether the limit switch operates normally. After clearing, make it covered
with a thin layer of lubrication to ensure the normal operation.
(3)Annual overhaul
Warning
The annual maintenance should be performed by
a) Check whether the locking of gear is excessive worn or damaged.
b) Replace the oil gearbox thoroughly.
After the above-mentioned checking and machine reassembling, lift up and down
with the weights several times before normal operation. If it is in good condition,
then restart the operation.

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7. Troubleshooting
^^\^Voltage
Hertz
Dual Voltage
50Hz
220V
three-phase
60Hz

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8.Common problems and Processing
Conditions
Reasons
How to solve
The hoist can
not be
operated
1)The power phases are
linked wrongly, which
results in the start of the
phase protection and
makes it unable to operate.
2)The power fuse is burned
or the no-fuse switch is off.
3)The fuse in the control
circuit burns.
4)The power cord or the
wire of the control circuit
breaks or is not linked
properly.
5)The voltage is too low.
6)The motor makes a
sound but does not rotate.
7)The emergency switch is
pressed (if installed).
8)The contactor is bad.
1)Exchange the power cords of the two phases.
2)Check whether the current is normal, replace a
proper fuse or restart the non-fuse switch.
3)Check whether the current is normal, and replace a
proper fuse.
4)Repair or replace the electricity wire that breaks or
has bad contact.
5)Measure whether the voltage is over 10% lower than
the standard voltage.
6)Check whether the motor phase is correct- repair and
make proper insulation.
7)Confirm the reason of pressing the emergency
switch.
8)a.Operate the hoist manually, if it works
properly,it means that the control coil or cable has bad
contact-find out the location of bad contact and have it
repaired.
b.If the hoist can not be operated manually, it is
necessary to check whether the main power supply is
normal. If the main power supply is ok, it is caused by
bad contact. If it is unable to output normally, the
contactor should be replaced.
The hoist can
not be
stopped
The coil of the contactor
fuses (it is in short circuit
fault).
Replace the contactor.

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The brake
slides
The motor brake wears.
Replace the friction disc.
The
chain/chain
wheel of the
lower hook
makes
abnormal
noise
1)The chain is not
lubricated enough and
properly.
2)The chain wheel is worn.
1)Lubrication.
2)Replace the chain and chain wheel.
Electric
leakage
1)Imperfect earth.
2)The dusts in air gather on
electrical parts or the
humidity is too high.
1)Provide perfect earth.
2)Keep the electrical parts clean and make humidity
low.
Oil leakage
1)The oil plug is not
applied.
2)The oil plug is loose.
3)The oil plug gasket is not
installed.
4)The gasket is worn or
deteriorated.
1)Install a proper plug.
2)Tighten the plug.
3)Install a proper plug gasket or replace
a new gasket.
9.Instructions of Using and Inspecting for Electric
Chain Hoist
Caution: When using the electric chain hoist, conduct in accordance with
the following items:
1.Confirm that the ISO level of electric chain hoist in use is in accordance with
using conditions.
2.No overloading.

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3.Electric chain hoist must be equipped with appointed chain.
4.It is forbidden to use if the lifting height of electric chain hoist is short.
5.Daily check-up before use.
6.Before use, check chains and links whether they are loose, twisted or twined.
Make maintenance before use.
7.It is forbidden to use if the anti-separation device of lower hook is valid or lack.
8.It is forbidden to use if the chain is lack of up and down stop device.
9.It is forbidden to use if the chain is twined with the weights.
10. It is forbidden to use the front end of hook to lift the weights.
11.Do not make repeated operation about lifting up and down rapidly.
12.Do not lift beyond the up and down limit switch.
13.Do not walk or stand under the hoist when lifting.
14.Do not lift the weights slanting(within 15 degrees)
15.Prevent the electric chain hoist falling down.
16.If the operation frequency is high, the chain of electric chain hoist should be
replaced annually.
17.Under the following special conditions, such as below -40 ℃, above 100 ℃,
corrosive orexplosive environment, the chain should be replaced every six months,
and the lower hookshould be replaced every two years. (If the operation frequency
is high, the lower hook should be examined annually and replaced every two
years.)
18.If in the electroplate, heat treatment plant, the surface of hoist should be do
periodic inspection monthly, and chain should be replaced annually.
19.After breaking, the chain can not be welded by yourself.
20.Chain should be lubricated before operation.
21 .Gears, bearings and other friction parts should be added lubricants timely.
22.When not using hoist in a long time, please safely keep after doing proper rust
proofing.
23.Electric chain hoist users will not be permitted to modify, if necessary,
commission factory to modify.
24.lt should be avoided to lift the weights with two hoists at the same time, which is
dangerous. If in extreme circumstance, it should lift carefully within the range of
sufficient loading capacity.

Technical Support and E-Warranty Certificate
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