LGMG SR1623 User manual

Operation and Maintenance Manual
SR1623
Lifting work platform
LINGONG GROUP JINAN HEAVY MACHINERY CO., LTD.
△!Warning
Operators and maintenance personnel
must read and understand this manual
before operating and maintaining this
vehicle, otherwise it may lead to
casualties! This manual should be kept
in a safe place for reference by
relevant personnel.

SR1623 Lifting Work platform
Operation and Maintenance Manual
880*1230 mm 16 format 8 printed sheets
1st edition August 2019 1st printed
Lingong Group Jinan Heavy Machinery Co., Ltd.
Add: 12th Floor, Building 3, Lushangguoaocheng, 9777 Jingshi Road, Lixia District,
Jinan, China
Tel: [phone] Fax: [phone]
Technical service: 86-0531-67605017 Web: www.LGMG.com.cn
Accessories sales: 86-0531-67605016

Lifting Work Platform Operation and Maintenance Manual
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Contents
Forward.....................................................................................................IV
Safety Attentions........................................................................................V
Chapter I Safety..........................................................................................1
1.1Danger............................................................................................... 3
1.2 No Operation Except Following Cases ............................................. 3
1.3 Dangers Classification...................................................................... 3
1.4 Design Intent .................................................................................... 3
1.5 Maintenance of Safety Mark............................................................. 3
1.6 Danger of Electric Shock .................................................................. 3
1.7 Danger of Tip-Over........................................................................... 4
1.8 Safety of Work Area.......................................................................... 4
1.9 Smashing and Pressing Hazards...................................................... 6
1.10 Hazards of Operating on Slopes..................................................... 6
1.11 Falling Hazards............................................................................... 6
1.12 Collision Hazards............................................................................ 6
1.13 Hazard of Component Damage ...................................................... 7
1.14 Hazard of Explosion and Fire.......................................................... 7
1.15 Hazard of Machine Damage........................................................... 7
1.16 Hazard of Bodily Injuries................................................................. 8
1.17 Battery Safety................................................................................. 8
1.18 Tilting Hazard ................................................................................. 8
Chapter II Legend .......................................................................................9
Chapter III Label........................................................................................13
Chapter IV Specifications..........................................................................21
Chapter V Control Unit..............................................................................25
5.1 GCU ............................................................................................... 27
5.2 PCU................................................................................................ 29
5.3 Basic Operation.............................................................................. 31
Chapter VI Check before Operation..........................................................35
6.1 No Operation Except Following Cases ........................................... 37
6.2 Basic principles............................................................................... 37
6.3 Check Before Operation ................................................................. 37
Chapter VII Workplace Check...................................................................39
7.1 No Operation Except Following Cases ........................................... 41
7.2 Basic Principles .............................................................................. 41
7.3 Workplace Check............................................................................ 41
Chapter VIII Functional Test......................................................................43
8.1 No Operation Except Following Cases ........................................... 45
8.2 Basic Principles .............................................................................. 45
8.3 Functional Test............................................................................... 45

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8.4 Test on the GCU............................................................................. 45
8.5 Test on PCU................................................................................... 46
8.6 Test on Operation of Inclination Sensor.......................................... 47
8.7 Test on Upper Limit Switch and Outrigger ...................................... 47
Chapter IX Operation Instructions.............................................................49
9.1 No Operation Except Following Cases ........................................... 51
9.2 Basic Principles .............................................................................. 51
9.3 Emergency Shutdown..................................................................... 51
9.4 Engine Startup................................................................................ 51
9.5 Operation from Ground................................................................... 52
9.6 Operation from Platform.................................................................. 52
9.7 Drive on Slope................................................................................ 53
9.8 Extension and Retraction Platform.................................................. 53
9.9 Emergency Descending.................................................................. 53
9.10 Operation from Ground by Control Unit......................................... 53
9.11 Outrigger operation....................................................................... 53
9.11 Use Method of Safety Arm............................................................ 54
9.12 Falling Protection.......................................................................... 54
9.13 After Each Use.............................................................................. 54
Chapter X Transportation and Lifting Instructions................................. 55
10.1 Compliance and Obedience.......................................................... 57
10.2 Being Fixed on Trucks or Trailers during Transportation............... 57
10.3 Ensuring Transportation Safety..................................................... 58
10.4 Lifting Guidance............................................................................ 58
Chapter XI Maintenance............................................................................61
11.1 Compliance and Obedience.......................................................... 63
11.2 Check for Safety Manual............................................................... 63
11.3 Check for Labels and Signs.......................................................... 63
11.4 Check for Damaged, Loose or Missing Parts................................ 63
11.5 Check for PCU and GCU.............................................................. 64
11.6 Check for Tilt Sensors and Buzzers.............................................. 65
11.7 Check for Wires............................................................................ 65
11.8 Check for Batteries....................................................................... 66
11.9 Check for Tires and Hubs ............................................................. 66
11.10 Check for Exhaust Cover of Hydraulic Oil Tank.......................... 67
11.11 Check for Hydraulic Oil Leakage................................................. 67
11.12 Check for the Hydraulic Filter...................................................... 67
11.13 Replacement of the Air Filter of the Hydraulic Oil Tank............... 68
11.14 Check Hydraulic Oil Level........................................................... 69
11.15 Test or Replacement of Hydraulic Oil.......................................... 69
11.16 Check for the Oil Level in the Reducer........................................ 70
11.17 Replacement of the Gear Oil of Reducer.................................... 70
11.18 Check for Engine Oil Level ......................................................... 71
11.19 Replacement of Engine Oil and Filter.......................................... 71

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11.20 Check for Fuel Leakage.............................................................. 72
11.21 Replacement of the Fuel Filter Element...................................... 73
11.22 Check for Engine Air Filter.......................................................... 74
11.23 Cleaning or Replacement of Air Filter ......................................... 74
11.24 Check for Coolant Liquid Level................................................... 75
11.25 Filling or Replacement of Engine Coolant................................... 75
11.26 Check for Engine Belt................................................................. 76
11.27 Check or Replacement of Scissors Arms Slider.......................... 76
11.28 Regular Maintenance.................................................................. 76

Lifting Work Platform Operation and Maintenance Manual
IV
Forward
Thanks for choosing lifting work platforms manufactured by Lingong Group Jinan Heavy Machinery Co.,
Ltd. This manual describes the mechanism, driving and operation, maintenance and adjustment,
technical parameters and repair/adjustment data of the SR1623 series lifting work platforms.
Maximizing the profits from your lifting work platform is our common goal, which is largely dependent on
your familiarity with the platform and careful and thorough maintenance. We sincerely hope that you can
read through the manual prior to the first start, operation as well as repair and maintenance of the
platform and get full understanding of the operations and maintenances described herein.
All the pictures and descriptions covered herein are correct at time of publication; but the structures and
performances of our products are constantly improved and perfected; therefore, please understand that
the related design, operation and maintenance instructions are subject to change at any time without
prior notice. For the latest information on the lifting work platform or in case of any doubt about this
manual, please consult LGMG.
This manual is applicable for SR1623 series lifting work platforms. Users shall be in strict accordance
with the time interval in the maintenance schedule to perform maintenance to the platform.
This manual shall always be placed at the specified position so that the driver can read it at any time.
This manual is a part of the lifting work platform and thus shall be handed over together when
transferring the ownership or the right to use of the platform. If this manual is lost, damaged or hard to be
recognized, please replace it in time!
The copyright of this manual is reserved by Lingong Group Jinan Heavy Machinery Co., Ltd.
Reproduction or reprinting without written permission by LGMG is prohibited.
△
!Warning
 Only the specially trained staff with corresponding qualifications is allowed to operate,
repair and maintain the platform.
 Incorrect operation, maintenance and repair are dangerous, and may lead to personal injury.
 Before operation or maintenance, the operator shall carefully read this manual. Do not
operate, maintain, and repair this platform without reading and understanding this manual.
 Loading shall be done in strict accordance with the rated loading capacity, and any
consequence due to overloading or unauthorized modification shall be the responsibility of
the users.
 The operation procedures and precautions referred to herein are only applicable to the
stipulated operation of the machine. For any operation out of the specification but not
prohibited, always make sure that this operation will not hurt you or other people.

Lifting Work Platform Operation and Maintenance Manual
V
Safety Attentions
Operators shall understand and follow prevailing national and local safety regulations. In case of no
relevant national or local regulation, safety attentions in this manual will be applicable.
Most accidents are caused by failure of following regulations on machine operation and maintenance. To
avoid accident, please read, understand and follow all warning requirements and notes in this manual
and on the machine before operation and maintenance.
Details of safety measures are explained in Chapter I "Safety".
Since it is unable to predict all possible dangers, therefore, safety explanation in the manual and on the
machine may not include all safety precautions. If the procedures and operation which are not
recommended in this manual are used, it must ensure people's safety and have no damage on
machines. If the user cannot confirm the safety of some operations, please ask the Company or the
dealer.
The prevention measures on operation and maintenance given in this manual are only applicable to use
of the machine as per the regulations. If the machine is used in the scope which is not listed in this
manual, the Company will not undertake any safety liability. The safety liabilities of this operation are
undertaken by users and operators.
The operation forbidden in this manual cannot be performed in any condition.
The following markers are used for identifying the safety information in this manual:
△
! Danger-Due to failure to avoid it, the sequence of the danger will cause serious injuries or
death. This word also indicates that failure to avoid it may cause serious damages to the
machine.
△
! Warning-Due to failure to avoid it, the sequence of potential danger may cause serious
injuries or death. This word also indicates that failure to avoid it may cause serious damages to
the machine.
△
! Note-Failure to avoid it may cause light or medium injuries. This word also indicates that
failure to avoid it may cause damages to the machine or shortening of the service life of the
machine.

Lifting Work Platform Operation and Maintenance Manual
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Chapter I Safety

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1.1Danger
Failure to disobey the instructions and safety rules in this manual may cause death or serious injuries.
1.2 No Operation Except Following Cases
You have known and practiced the rules for safe operation of machine in the Operation Manual.
1) Avoid the dangers. Know and understand the safety rules before next step.
2) Always check before operation.
3) Always perform the function test before operation.
4) Check the work place.
5) Use the machine only as per the design intent of the machine.
6) Read, understand and obey the instructions and safety rules of manufacturer-safe operation manual
and machine label.
7) Read, understand and obey the safety rules for users and regulations of work site.
8) Read, understand and obey all applicable government laws and regulations.
9) You need to accept proper training for safe operation of the machine.
1.3 Dangers Classification
The meanings of the symbol, color mark and symbolic text used on the product of Lingong Group Jinan
Heavy Machinery Co., Ltd. are shown as below:
1) Safety warning sign-warn the existing potential personal injuries. Follow all safety information
behind the sign, so as to avoid the potential personal injuries or death.
2) Red Remind the danger. Failure to avoid it may cause personal death or serious injuries.
3) Orange Remind the danger. Failure avoid it may cause death or serious injuries.
4) Yellow Remind the danger. Failure to avoid it may cause light or medium personal injuries.
5) Blue Remind the danger. Failure to avoid it may cause property loss.
1.4 Design Intent
The use of the machine is only limited to lift staff, tools and materials to the high work place.
△
! Note: It is forbidden to carry cargo.
1.5 Maintenance of Safety Mark
1) Replace any lost or damaged safety mark to make the operator remember the safety at any time.
2) Wash the safety mark by mild soap and clean water.
3) Do not use solvent cleaner since it may damage the materials of the safety mark.
1.6 Danger of Electric Shock
1) The machine is not insulated, and does not provide the electrical shock protection when contacting
or being closed to the wire.

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Keep enough safety distance from the machine to the power supply line and electric machine according
to the applicable government laws and regulations, and instructions of the following table.
Voltage
Required safety distance
0-300 V
No touching.
300V-50 KV
3.05 m
50 KV-200 KV
4.6 m
200 KV-350 KV
6.10 m
350 KV-500 KV
7.62 m
500 KV-750 KV
10.67 m
750 KV-1,000 KV
13.72 m
2) Beware of strong winds or gusts. Consider the factors such as platform movement, wire swing or
droop.
3) If the machine contacts the wire with power, please be far away from the machine. Staff on the
ground or platform is forbidden to contact or operate the machine before cutting off the power
supply.
4) Do not operate the machine when there is lightning or storm.
5) Do not use the machine as the ground wire during welding.
1.7 Danger of Tip-Over
Staff, equipment and materials on the platform cannot exceed the maximum bearing capacity of the
platform and extension platform.
Maximum capacity
4
Maximum operating load of platform
680 kg
Load of each extension platform
230 kg
1.8 Safety of Work Area
1) The platform can only be raised on a solid and flat level ground.
2) The speed shall not exceed 1.1 km/h when the platform is raised.
3) The inclination alarm cannot be regarded as level indicator. When the machine is seriously inclined,
the inclination alarm of the chassis and platform will ring.
4) If inclination alarm rings, lower the platform and move the machine to a solid level ground. If the
inclination alarm rings when the platform is raised, the platform shall be lowered very carefully.
5) Do not operate the machine in strong winds or gusts. The surface area of the platform or load cannot
be increased. Increase of the area exposed to the wind will reduce the stability of the machine.

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6) In the raising state of the platform, the machine cannot run on uneven terrain and unstable surface,
or in other dangerous situations, or near these areas.
7) In the folding state, the machine must run very carefully and reduce its speed when it runs on
uneven terrain, unstable or smooth surface with stones, or the place near the tunnel, or the steep
slope.
8) Do not use the platform control unit (PCU) to release the platform when the platform is tripped, stuck,
or its normal operation is obstructed by other nearby matters. Before using the ground control unit
(GCU) to release the platform, all staff must leave the platform.
9) Don't push or pull anything outside the platform.
10) Don't use the machine as a crane.
11) Don't place, fasten and fix or suspend loads on any component of the machine.
12) Don't place ladders or scaffolds within the platform or against any component of the machine.
13) Don't attach platforms to adjacent buildings.
14) Don't change or disable limit switch.
15) Don't tie platforms to adjacent components.
16) Don't place loads outside the platform guardrail.
17) Don't change or damage any component that may affect the safety and stability of the machine.
18) Don't replace key parts that affect machine stability with parts of different weights or specifications.
19) Don't amend or modify the aerial work platform. Install additional equipment for placing tools or
other materials on platforms, pedals or guardrails, which will increase platform weight and surface
area or load.
20) Don't push machines or other objects on the platform.
21) Only transport tools and materials that are evenly distributed and can be safely moved by people on
the platform.

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22) Don't use machines on moving surfaces and vehicles.
23) Ensure that all tires are in good condition and nuts have been properly tightened.
24) Ambient temperature for machine operation is -20℃-40℃.
25) Ambient relative humidity for machine operation shall be no greater than 90% (at 20℃)
26) The allowable fluctuation of machine power supply voltage is ±10%.
1.9 Smashing and Pressing Hazards
1) Don't move your hands and arms near parts that are in danger of cutting or smashing, and keep
them out of scissors arms.
2) Don't place your hands in a position where you may get pinched when folding the guardrail.
3) Grasp the platform guardrail all the time when removing the pins fixed on the guardrail. Don't let the
platform guard railing fall off.
4) Please maintain good judgment and planning when operating the machine with controllers on the
ground. Maintain a safe distance among operators, machines and stationary objects.
1.10 Hazards of Operating on Slopes
Don't drive the machine on slopes that exceed the ratings of machine slopes and side slopes. Slope
ratings are applicable to machines in a rising state.
Model
Item
SR1623
Maximum allowable angle of
operation (front and rear)
3°
Maximum allowable angle of
operation (left and right)
2°
1.11 Falling Hazards
1) During operation, the operator on the platform must wear a full body safety device and be secured
on approved rope anchorage points with safety strap hooks. Each rope anchorage point can only be
tied with one hook.
2) Don't climb or stand on the platform guard railing. Stand firmly on the platform floor at all times.
3) Don't climb down from the platform when the platform is lifted.
4) Keep the platform floor free from debris.
5) Please close the entrance door before operation.
6) Don't operate the machine if guard railings are not installed properly or safe operation cannot be
guaranteed at the entrance door.
7) Don't move in and out of the platform unless the machine is in a folding state.
1.12 Collision Hazards
1) Pay attention to range of visibility and blind spots when starting or manipulating the machine.

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2) Pay attention to the position of the extension platform when moving the machine.
3) Check the operation areas to avoid obstacles overhead or other possible hazards.
4) Be careful of extrusion hazards when grasping the platform guard railing.
5) Users must comply with service regulations of personal protection equipment as required by the
employer, in workplace and stipulated in government laws and regulations.
6) Observe and use the direction arrows of driving and steering functions on the PCU and platform
labels when driving and steering.
7) Don't operate the machine on any running route of crane or high-altitude machinery unless the
crane controller has been locked and/or precautions have been taken to prevent any potential
collision.
8) Prohibit dangerous driving or play when the machine is operated.
9) It is allowed to lower the platform when there are no staff and obstacles in the area under the
platform.
10) Restrict driving speed according to ground condition, jamming degree, gradient, staff position and
any other factors that may cause collision.
11) Recommend the operator to wear qualified safety helmet when the machine is operated.
1.13 Hazard of Component Damage
1) Do not use any battery or charger greater than 12 V to start up the engine.
2) Do not use the machine as the ground wire during welding.
3) Do not use the machine in the place where there may be magnetic field.
1.14 Hazard of Explosion and Fire
1) Do not use the machine in hazardous place or the place where there may be inflammable or
explosive gas or particles.
2) Do not start up the engine if the liquefied petroleum gas (LPG), gasoline, diesel or other explosive
substances are smelled or perceived.
3) Do not refuel the machine when the engine is operated.
4) It is allowed to refuel the machine or charge the battery only in the open and well-ventilated places
far away from sparks, flames, burning cigarettes, etc.
1.15 Hazard of Machine Damage
1) Do not use the damaged or faulted machine.
2) Be sure to perform a thorough check before operation of machine and test all functions before each
shift. The damaged or faulted machine shall be marked immediately, and the operation shall be
stopped.
3) Ensure that all maintenance operations have been performed as specified in this manual.
4) Ensure that all labeling positions are proper and easy to be identified.
5) Ensure that this manual is stored in document box on the platform.

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1.16 Hazard of Bodily Injuries
1) Do not operate the machine when hydraulic oil or air leaks. Leakage of hydraulic oil or air may
penetrate or burn the skin.
2) Always operate the machine in a well-ventilated place to avoid poisoning of carbon monoxide.
3) Wrong contact with any component under the cover may cause serious injuries. Trained
maintainers are only allowed to overhaul the compartment. Suggestion: Only when the check before
operation is performed, can operator overhaul the compartment. During operation, all compartments
must be closed and locked.
1.17 Battery Safety
Combustion Hazard
1) The battery contains acidic substances. Be sure to wear protective clothing and protective glasses
when the battery is used.
2) Avoid overflow of acidic substance or contact with it in the battery. Use soda and water to neutralize
the overflowing acidic substances in the battery.
Explosion Hazard
1) Prohibit sparks, flames, and lighted cigarettes to be near the battery, because the battery can
release explosive gas.
2) Do not use tools that may cause sparks to contact battery terminal or cable clamp.
Electric Shock/Burn Hazard
Avoid contacting electrical terminal.
1.18 Tilting Hazard
1) The outrigger can only be lowered on the fixed ground. Be careful to avoid steep slope, opening,
unstable or smooth plane and other potential hazards.
2) Be sure to lower the outrigger at steering end firstly, when the automatic leveling function is not
used and the single outrigger is lowered.
3) Raise the platform only when the machine is horizontal. Do not set the machine to be in a raising
state when it is impossible to reach the horizontal ground by outrigger only.
4) Raise the platform only when all of four outriggers are fully lowered to be in close contact with the
ground and the machine is horizontal.
5) Do not adjust outriggers when the platform is raised. Do not drive the vehicle when outriggers are
lowered.

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Chapter II Legend

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No.
Name
No.
Name
1
Platform extension locking
handle
10
Covering accessories
2
Platform guard railing
11
Working indicator
3
Extension platform
12
Steering tire
4
Document box
13
Hydraulic oil tank
5
PCU
14
Fuel tank
6
Fixed lanyard point
15
Non-steering wheel
7
Platform entrance door
16
Outrigger foot pad
8
GCU
17
Outrigger bracket
9
Inclination sensor
18
Safety arm

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Chapter III Label