Jema Autolifte JA2800S User manual

JA2800S
Movable Scissor Lift
Lifting Capacity: 2800 KG
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Read this entire manual carefully and completely before installation or operation of the lift.

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INDEX
1. Important safety instructions………………………………………….…3~5
1.1 Important notices
1.2 Qualified personnel
1.3 Danger notices
1.4 Warning signs
1.5 Sound level
1.6 Training
2. Overview of the lift………………………………………………….……..4~5
2.1 General descriptions
2.2 Technical data
2.3 Construction of the lift
3. Installation instructions………………………………………………….6~10
3.1 Preparations before installation
3.1.1 Tools and equipments needed
3.1.2 A list for checking of parts
3.1.3 Ground conditions
3.2 Precautions for installation
3.3 Installation
3.4 Items to be checked after installation
4. Operation instructions………………………………………………….10~12
4.1 Precautions
4.2 Descriptions of control box
4.3 Operation flow chart
4.4 Operating instructions
4.5 Emergency lowering in case of power failure
5. Trouble shooting………………….…………………………………… 12~13
6. Maintenance……………………………………………………….…….13~14
7. Annex…………………………………………………….………………..14~16
Annex1, Overall diagram
Annex2, Hydraulic working system
Annex3, Separate diagrams for the lift
Annex4, EC Declaration
Annex5, Electric wire diagram

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1. Important safety instructions
1.1 Important notices
Jema Autolifte will offer one-year quality warranty of the lift, during which any quality problem will be properly solved to the
user's satisfaction. However, we will not take any responsibility for whatever bad consequence that may result from improper
installation and operation, overload running or improper ground conditions.
This model is specially designed for lifting motor vehicles that weighs within maximum lifting capacity. Users are not allowed to
use it for any other purposes. Otherwise, Jema Autolifte, as well as our sales agency, will not bear any responsibility for
accidents or damages of the lift. Make sure to pay careful attention to the label showing the lifting capacity, attached on the lift,
and never try to lift cars weighing more than the specified lifting capacity. Read this manual carefully before operating the lift so
as to avoid economic loss or personnel casualty incurred by wrong operation. Without our professional advice, users are not
permitted to make any modifications of the control unit or any other mechanical unit.
1.2 Qualified personnel
1.2.1 Only qualified staff, which has been properly trained, can operate the lift.
1.2.2 Electrical connection must be carried out by a certified electrician.
1.2.3 No unauthorized entry is allowed in the lifting area.
1.3 Danger notices
1.3.1 Do not install the lift on an asphalt surface.
1.3.2 Read and understand all safety warnings before operating the lift.
1.3.3 Calibration of the lift must be down after reading calibration instructions.
1.3.4 Do not leave the controls while the lift is still in motion.
1.3.5 Keep hands and feet away from any moving parts. Keep feet clear of the lift when lowering.
1.3.6 Only properly trained personnel can operate the lift.
1.3.7 Do not wear unfit clothes such as large clothes with flounces, tires, etc, which could be caught by moving parts of the lift.
1.3.8 To prevent accidents, surrounding areas of the lift must be tidy and free from irrelevant matters.
1.3.9 The lift is simply designed to lift the entire body of vehicles, with its maximum weight within the lifting capacity.
1.3.10 Always insure the safety lock is engaged before any attempt to work near or under the vehicle. Never remove safety
related components from the lift. Do not use the lift if safety related components are damaged or missing.
1.3.11 Do not rock the vehicle while on the lift or remove any heavy component from vehicle that may cause excessive weight
shift.
1.3.12 Check at any time the parts of the lift to ensure the agility of moving parts and the performance. Ensure regular
maintenance and if anything abnormal occurs, stop using the lift immediately and contact our dealers for help.
1.3.13 Lower the lift to its lowest position and do remember to cut off the power source when service finishes.
1.3.14 Do not modify any parts of the lift without manufacturer’s advice.
1.3.15 If the lift is going to be left unused for a long time, users are required to:
a. Disconnect the power source;
b. Empty the oil tank;
c. Lubricate the moving parts with hydraulic oil.
Attention: For environment protection, please dispose the disused oil in a proper way.

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1.4 Warning signs
1.5 Sound Level
The sound emitted from the lift should not exceed 75DB. For the sake of your health, we suggest that you install a noise
detector in your working area.
1.6 Training
Only qualified staff, which has been properly trained, can operate the lift. We are quite willing to provide professional training for
the users when necessary.
2. Overview of the lift
2.1 General descriptions
This movable scissor lift has a quite low profile when at its lowest position. This model is designed with 2 cylinders and manual
release system. The spring makes sure the lock goes back to position. When lowering the lift, it has to be lifted up to the
position where the lock can be released.
Safety structure:

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2.2 Technical data
Model
Lifting capacity
Lifting time
Lifting height
Electrical requirement
JA2800S
2800kg
50 Sec
1200mm
220V/240V, Single Phrase
Weight of JA2800S = 415 KG.
2.3 Construction of the lift
3. Installation instructions
3.1 Preparations before installation
3.1.1 Tools and equipments needed
√ Electrical drill
√ Open wrenches
√ Screw drivers
√Adjustable spanner
3.1.2 List for checking of parts ---Annex 1 (Packing list)
Unfold the package and check if any parts missed as per Annex 1. Do not hesitate to contact us in case any parts are missing,
but if you do not contact us and insist on installing the lift lacking of some parts, Jema A/S as well as our dealers will not bear
any responsibility for this and will charge for any parts subsequently demanded by the buyer.

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3.2 Precautions for installation
3.2.1 Joints of oil hose must be firmly connected in order to avoid leakage.
3.2.2 All bolts should be firmly checked.
3.2.3 Do not place any vehicle on the lift in the case of trial running.
3.3 Installation
Step1, Connect the handle on the engine kit.
Step2, Mount the engine
Step3, Connect fitting and oilhose from engine to piston.

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Step4, Connect the power and push UP button until the lift goes to about 500mm.
Step 5, Mount the lock releasing wire

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Step 6, Mount the arms and arm locks.

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3.4 Items to be checked after installation.
S/N
Check items
YES
NO
1
Are the lifting arms mounted correct and tighten?
2
Are the oil hose tightly connected?
3
Are all electric connections correct?
4
Are the lowering valve correct adjusted?
4. Operation instructions
4.1 Precautions
4.1.1 Check all the joints of the oil hose. Only when there is no leakage, the lift can start working.
4.1.2 The lift must not be used if its safety devices malfunction.
4.1.3 The machine must not lift or lower an automobile if its center of gravity is not positioned midway of the rising platforms
Jema Autolifte as well as our dealers will not bear any responsibility for any consequence as a result of operating the lift in
unbalance conditions.
4.1.4 Operators and other authorized personnel should stand in a safety area during lifting and lowering process.
4.1.5 When the lift are being raised to the desired height, switch off the power at once to prevent any wrong operation
performed by unauthorized people.
4.1.6. Make sure that the safety lock of the lift is engaged before starting work under the vehicle and that nobody stays under
the vehicle during the lifting and lowering process.

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Turn on the power switch
Press UP button
Motor drives the gear pump work
The lift is raised
Cylinder piston drives the platform to rise
Press the DOWN button
The lift is lowered
Turn on the power switch
4.2 Descriptions of control box
4.3 Operation flow chart
Raising
Lowering
Press UP button

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4.4 Operation instructions
To raise the lift
1. Make sure that you have read and understood the operation manual before operation.
2. Drive and park the vehicle midways on the lift.
3. Place the four rubber pads under the prop-points of the vehicle and ensure that the car’s gravity have fallen on the rubber
pads.
4. Connect the lift to the power supply
5. Press the UP button on the control box until rubber pads have touched the prop-points of vehicle.
6. Keep on pressing the UP button to lift the vehicle a bit higher from the ground and check if the vehicle is in a safe position.
7. Disconnect the power supply
To lower the lift
1. Connect the lift to the power supply.
2. Press the “UP” Button to make sure the safety lock is released
3. Press the DOWN button to lower the lift.
4. When the lift is in the lowest position, disconnect the power

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5. Trouble Shooting
ATTENTION: If the trouble could not be fixed by yourself, please do not hesitate to contact Jema Autolifte for help. Jema
Autolifte will offer our service at the earliest possible time. Your troubles will be judged and solved much faster if you could
provide us more details or pictures of the trouble.
TROUBLES
CAUSE
SOLUTION
Motor does not run and
will not raise
The engines power supply is not connected or
connected correctly.
Check the power supply and change
broken parts if needed.
The motor is burnt
Replace it.
The condensator is burnt.
Change the broken condensator.
Motor runs but will not
raise
The lowering valve is open.
Check if the lowering valve is broken.
Overflow valve is loose or jammed.
Clean or adjust it.
The gear pump is damaged.
Replace it.
Oil level is too low.
Add oil.
The oil hose is jammed.
Clean or replace the oil hose.
The oil hose is broken.
Replace it.
Platforms go down slowly
after being raised
The oil hose leaks.
Check or replace it.
The oil piston is not in the right position.
Adjust or replace the piston.
It is to cold in the garage. (min. 5°).
The lift can only be used at 5° to 40°.
Lowering speed valve is not correct adjusted
Clean or adjust.
The lowering valve is broken.
Replace it.
Raising too slow
The oil filter is jammed.
Clean or replace it.
Oil level is too low.
Add oil.
The pump pressure is not adjusted right
position.
Adjust it.
The hydraulic oil hose is too hot (above 40°).
The lift can max. be used up to 40°.
The seal of the cylinder is abraded.
Replace the piston or seal.
Lowering too slow
The lowering valve is jammed.
Clean or replace.
The hydraulic oil is dirty.
Change the oil.
The lift is not checked and maintained
Get the lift checked asap.
The oil hose is jammed.
Clean or replace it.

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6. Maintenance
Easy and low cost routine maintenance can ensure the lift works normally and safely. The following are requirements for routine
maintenance. You may choose the frequency of routine maintenance by consulting your lift’s working conditions and time.
The following parts need to be lubricated.
6.1. Daily checking of items before operation
The user must perform daily checks. Daily checks of the safety system are very important –the discovery of device failure
before action could save your time and prevent you from great loss, injury or casualty.
·Check whether oil hose well connected. No leakage is allowed.
·Check the electric connections. Make sure that all connections are in good condition.
·Check whether the expansion bolts are well anchored.
·Check if safety teeths and safety block is matching well or not.
6.2. Weekly checking of items
·Check the flexibility of moving parts.
·Check the working conditions of safety parts.
·Check the amount of oil left in the oil tank. Oil is sufficient if the carriage can be raised to highest position. Otherwise, oil is
insufficient.
·Check whether the expansion bolts are well anchored.
6.3. Monthly checking of items
·Check whether the expansion bolts are well anchored.
·Check the tightness of the hydraulic system and screw the joints firmly if it leaks.
·Check the lubrication and abrasion circumstances of moving parts.
6.4. Yearly checking of items
·Empty the oil tank and check the quality of the hydraulic oil.
·Wash and clean the oil filter.
If users follow the above maintenance requirements strictly, the lift will be kept in a good working condition and
accidents could be avoided to a large extent.
S/N
DESC
1
Arm Lock shaft
2
Joint shaft A
3
Joint shaft B
4
Joint shaft C

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7. ANNEX
Annex1, Overall diagram

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Annex 2 Hydraulic working system
Annex3, Separate diagrams for the lift
For the pump:
S/N
DESCRIPTION
QTY
1
Motor
1
2
Hydraulic block
1
3
Overflow valve
1
4
Fitting
2
5
Cushion valve
1
6
Absorbing oil hose
1
7
Oil filter
1
8
Throttle valve
1
9
Oil hose tie-in
1
10
Electrical unloading valve
1
11
One-way valve
1
12
Gear pump
1
13
Oil tank
1
14
Oil tank cover
1
15
Oil back hose
1

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Annex4, EC Declaration

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