Mima MBC Series User manual

MATERIAL HANDLING EQUIPMENT DESIGNER & MANUFACTURER
Manual Instruction
MBC Series Electric Pallet Stacker
BANYITONG SCIENCE & TECHNOLOGY DEVELOPING CO.,LTD.
www.mimaforklift.com

Preface
MBC series pallet stacker is a new product developed by our company to meet the needs of the
market and with reference to advanced technology at home and abroad. Due to its compact structure,
convenient operation and flexible use, it is especially suitable for warehouses, freight yards and
supermarkets. And the general factory floor as the loading, unloading, stacking, handling and other
operations of the goods.
This manual introduces the basic structure of the main components of the MBC series pallet stacker,
the working principle, and the basic knowledge of maintenance and maintenance. It can help the
operator to use the forklift reasonably and maximize the performance of the forklift. It is hoped that
operators and equipment managers will read carefully before operating the truck.
By carefully reading the original maintenance instructions, the user has the technical knowledge
necessary to operate the truck safely. The information contained in the manual is clear and concise.
This maintenance manual is written for different types of forklifts. During operation and maintenance,
you must pay attention to the specific regulations of the corresponding forklift model.
The company will continue to develop and optimize forklift equipment, so please understand that the
company must retain the right to modify the equipment shape, equipment and technology. For this
reason, the forklift user must not claim a claim for the specific performance of any forklift equipment
from the contents of this instruction manual.
The copyright of this maintenance manual belongs to Banyitong Science & Technology Developing
Co., Ltd..
Version number：202003

Contents
Chapter 1 Safety Rules.....................................................................................................................................1
1 Overview of security rules............................................................................................................... 1
2 Forklift operation............................................................................................................................... 1
3 Operator's responsibility.................................................................................................................. 1
4 Workplace...........................................................................................................................................1
5 Driving and guidance during driving..............................................................................................1
6 Transport goods................................................................................................................................2
7 Parking precautions..........................................................................................................................2
8 Battery loading and unloading ......................................................................................................2
9 Maintenance and repair .................................................................................................................2
Chapter 2 Warnings, Nameplates and Symbols ........................................................................................ 3
Chapter 3 Introduction of Pallet Stacker ......................................................................................................4
1 Pallet stacker occasions ................................................................................................................4
2 Pallet stacker disabled occasions..................................................................................................4
3 Pallet stacker parameters ..............................................................................................................4
4 Main components ............................................................................................................................5
Chapter 4 Control Devices .............................................................................................................................7
1 Lifing control .....................................................................................................................................7
2 Driving direction and speed control ............................................................................................. 7
3 Anti-accident safety switch..............................................................................................................7
4Horn.....................................................................................................................................................7
5 Battery connector assembly............................................................................................................7
6Keyswitch ........................................................................................................................................ 7
7 Electricity meter ...............................................................................................................................7
Chapter 5 Drive..................................................................................................................................................8
1Start.....................................................................................................................................................8
2Brake...................................................................................................................................................8
3 Steering.............................................................................................................................................. 8
4 Warning .............................................................................................................................................8
5Parking................................................................................................................................................8
Chapter 6 Transportation of Goods..............................................................................................................10

Chapter 7 Battery and Charger..................................................................................................................... 11
1.Replace the battery.........................................................................................................................11
2 Charging .........................................................................................................................................11
3 Battery maintenance...................................................................................................................... 12
4 Electromagnetic brake maintenance...........................................................................................13
Chapter 8 Faults Diagnosis ......................................................................................................................... 15
Chapter 9 Maintenance ................................................................................................................................17
1 Safe regulation of maintenance ................................................................................................. 17
2 Maintenance work that users can finish ................................................................................... 18
3 Clean forklift.....................................................................................................................................19
4 Maintenance list ............................................................................................................................19
5 Lubrication parts table....................................................................................................................21
6Grease ............................................................................................................................................21
Chapter 10 Transporting and preserving the forklift..................................................................................22
1 Tow and transport faulty forklift.....................................................................................................22
2 Preservation of the forklift ........................................................................................................... 22
3 Precautions for re-use of pallet stacker after storage ............................................................ 22
Chapter 11 Schematic Diagram....................................................................................................................23

1
Chapter 1 Safety Rules
1 Overview of security rules
1.1 Before using the pallet stacker every day, check all safety switches and equipment according to the
work requirements to ensure that these safety facilities are in good condition.
1.2 Check that all warning signs and design parameters on the stacker are not damaged.
1.3 The battery must be securely fastened in the battery compartment.
1.4 It is forbidden to use if the pallet stacker is damaged or malfunctions and affects safe use.
1.5 Pallet stacking trucks should be carried out by professionals when performing maintenance or
adjustments.
2 Forklift operation
For the pallet stacker used in the refrigerating compartment, special manufacture must be carried out.
The pallet stacker is designed and manufactured, and there are certain restrictions on the use
occasions:
2.1 Where the air contains flammable and explosive dust or gas.
2.2 As a tractor for other stackers.
2.3 For transport personnel.
3 Operator's responsibility
3.1 After training and approval, the pallet stacking operation can be carried out.
3.2 Comply with this manual and relevant local safety regulations and obey the traffic rules.
3.3 Hand and foot with oil, it is strictly forbidden to operate the pallet stacker.
4 Workplace
4.1 Pallet stackers can only be run on flat, hard surfaces such as concrete or asphalt. Do not work in
oily areas to avoid slipping.
4.2 Ensure that the ground can withstand the total weight of the pallet stacker, ie the weight of the pallet
stacker, the weight of the load and the weight of the operator.
5 Driving and guidance during driving
5.1 Do not suddenly brake and turn at high speeds.
5.2 Deceleration should be carried out on the slope to keep the cargo at the lowest position. It should
be straight up and down on the slope. It is forbidden to turn the head and lift the fork on the slope.
5.3 If the road surface is slippery, it should be decelerated to prevent the pallet stacker from idling or
overturning.
5.4 If the line of sight is blocked, you can place the goods behind you and, if necessary, ask others to

2
guide them around to ensure safety.
5.5 Keep a certain safe distance from the stackers, people and objects ahead. When the speed is over,
the horn should be sounded.
5.6 Before the pallet stacker enters the elevator, ensure that the elevator can withstand all weights.
6 Transport goods
6.1 Only when unloading or forked goods can the fork be lifted and kept away from the surrounding
personnel.
6.2 The transported goods shall remain equal in the left and right positions on the forks, which are
unstable or unsafe and are not allowed to be transported.
6.3 Special care should be taken when transporting high and heavy cargo. For the transportation of
goods of high height, the forklift should be equipped with a shelf.
7 Parking precautions
7.1 After the pallet stacker stops, the fork should be placed at the lowest point and the forklift should be
stopped.
7.2 Pallet stackers are not allowed to park on slopes.
7.3 The pallet stacker should be parked at the designated location.
7.4 Pallet stackers are not allowed to be parked at the emergency exit.
7.5 Do not stop the pallet stacker in a place that hinders work.
7.6 The pallet stacker must be powered off after parking.
8 Battery loading and unloading
8.1 Care should be taken when handling the battery and its plugs. Read the instructions carefully. See
the battery section for details.
8.2 Wear protective glasses when replacing or charging the battery.
9 Maintenance and repair
Learning to maintain can prevent mistakes and accidents, please see the chapter on maintenance.
All replacement parts and spare parts shall be approved by the company. It is strictly forbidden to repair
or modify the pallet stacker to safety or function.

3
Chapter 2 Warnings, Nameplates and Symbols
The pallet stacker has the following signs: (Please read the sign on the car carefully for details. See the
illustration)
1 Lifting and lowering control buttons
2 accelerator
3 Horn signal
4 Pallet stacker nameplate
5 Emergency stop button
Operation Handle
Instrument Switch

4
Chapter 3 Introduction of Pallet Stacker
The pallet stacker is driven by electric energy, and the switch on the handle of the handle
controls the walking, and the steering handle controls the steering.
The pallet stacker uses a 24V electronic system with a set of integrated circuit controllers to
adjust its speed steplessly. To ensure a more stable speed and acceleration during driving. The
fork is lifted by an advanced electric hydraulic pump, and the fork is lifted and lowered by the
lifting and lowering buttons.
If the truck is to work in a cold, humid environment, it should be filled with low temperature oil to
suit the environment.
1 Pallet stacker occasions
Pallet stackers are suitable for stacking goods with pallets.
2 Pallet stacker disabled occasion
2.1 Locations that can cause fire or explosion, such as oil areas.
2.2 Used as a tractor for other stackers.
2.3 Used to transport personnel.
2.4 Work on grass or in the sand.
3 Pallet stacking parameters
Relevant parameters of the forklift are marked on the nameplate.
Model MBC
Rated capacity kg 1600/2000
Lift height mm 1600~5000
Travel speed without load
km/h 6
Travel speed with full load
km/h 5
Gradeability with full load % 6
Turning radius mm 1490
Overall width mm 820
Service weight（inc.battery）
kg 1300
Drive wheel material PU
Drive motor (power ) 1.5KW

5
4 Main components
4.1 Handle
During the driving process, the forklift is controlled to walk and turn by handle, and the maximum
steering angle of the handle is 180 degree. The brake function is in the stacker of the uppermost or
lowermost end of the handle, and automatically brakes when the power is turned off.
4.2 Pallet Stacker Nameplate
The nameplate is attached with the model number; rated lifting weight; maximum lifting height;
self-weight; factory number.
4.3 Cover
Removable, with good visibility when use.
4.4 Meter
The power meter displays the power value during normal operation, reflecting whether the battery
power meets the requirements.
4.5 Hydraulic control
The up and down buttons on the body panel control the rise and fall functions.
4.6 Hydraulic device
It consists of pumping station, piping system and lifting cylinder.
4.7 Power socket assembly
When the battery is charging, pull out the socket with the handle and insert it with the plug on the
charger.
4.8 Drive with brake
It is equipped with an electromagnetic energizing brake, a traveling motor, a gear box and a driving
wheel. A steering bearing is arranged between the driving motor and the gear box.
4.9 Speed control device
Normal operation at 24V, the speed is adjusted by electronic control.
4.10 Universal support wheel
One-sided universal wheel support to ensure lateral stability of the stacker body.
4.11 Battery
The battery is fixed in the battery box with a voltage of 24V and a standard capacity of 210Ah.
The stacker assembly

6

7
Chapter 4 Control device
1. Lifting control
Turn on emergency stop button, and turn on the key switch, operate the handle button according to
the instruction direction, you can lift or lower the forks.
2. Driving direction and speed control
Rotate the handle by the handle head to control driving direction, You may regulate the speed and
acceleration with it.
3. Anti-accident safety switch
The operator operates facing to the forks and goods, when you turn the forklift backwards by mistake,
and you have no enough time to avoid your body, the handle is interfered with your body, the control
switch is closed, the forklift brakes promptly. Before continuing running, you must resume the selection
switch of the direction at the middle position.
4. Horn
The horn can ring when you press it.
5. Battery connector assembly
Pull out the socket and turn off the power in the following situations.
5.1 Accident
5.2 Under the urgent and dangerous situation
5.3 Welding
Be careful!
While you weld around the forklift, the batteries are easy to be damaged. If the weld current scurries
into the batteries, they will be destroyed, it is necessary to pull out the socket at this moment.
When charging, pull out the socket and link the charger plug with the movable socket .After finishing
charging, resume the outlet to where it is.
6. Key switch
This switch is used to control the circuit on or off.
7. Electricity meter
When the key switch is turned on, the electricity meter displays the remaining battery capacity, there
are a total of ten lattices. When the two leftmost diodes are flashing, it indicates that the battery is
insufficient and the battery needs to be charged.

8
Chapter 5 Drive
1. Start
Please go on in proper order as follows, otherwise stacker can not run:
1.1 Make sure that the outlet is inserted firmly.
1.2 Turn the switch of the key to the on position.
1.3 Make sure that the group of the batteries has enough electricity.
Be careful!
Operating the forklift at a low electricity for a long time will damage the life-span of the batteries. You
can’t start the forklift before finishing charging
#The handle should be in correct position,moves downwards and leaves the uppermost position, and
should be between the uppermost end and the lowermost end.
# Choose the driving direction correctly, control the speed in the ideal state, and slowly accelerate to
the ideal spead.
Warning!
Don’t operate the forklift with serious function defect and danger. Operators should check the following
safety functions at first before working every day:
※The function of the horn is normal.
※The operation function is normal
※The function of braking is normal.
※The hydraulic function is normal.
2. Brake.
2.1 When the handle moves to the uppermost position or lowermost position, the forklift truck will
realizes electromagnetic braking
2.2 When the direction switch is in normal running and turns to the opposite direction, it can carry out
the function of electric brake. Controlling the running speed can control the brake force of the driving
motor.
2.3 Parking the stacker
Make the machine stop by loosening the driving direction switch and resuming it to the empty position.
3. Steering
3.1 Steering is controlled by the handle, steering angle can be at the left and right direction in the
range of 90 degrees.
3.2 If the forklift meets barriers, it’s forbidden to pass by force, you can detour the barriers by rotating
the handle to move ahead or go backwards.
4.Warning!
Do not allow the wheels skid.
If there’s greasy dirt on the operator’s hands or shoes, it is easy to fail operation, and make the forklift
out of control, so you should wipe your hands or the shoes before driving.
5. Parking
5.1Loosen the direction switch.
5.2Lower the forks to the lowest position, make the hydraulic system have no pressure.

9
5.3Loosen the handle, it will return to the braking position automatically.
5.4Make the key switch in the off position.
Be careful!
Do not allow to drive without authorization.
If you leave, please take the key away with you.

10
Chapter 6 Transportation of Goods
1 The weight of goods should be in the range of the forklift allowed.
2 Reducing the speed while turning round.
3 You should pay attention to safety while transporting irregular objects, when turning round, please
pay attention to reserving space.
4 If goods affect sight line, please drive in the opposite way
5 If your obverse sight is obstructed, you can ask others to guide the direction.
6 You should slow down the speed when going up and down the slope. It’s forbidden to turn back on
the slop.
Warning!
The forklift has danger of overturning if you turn round on the slope.
When the forklift goes down the slope, the distance of brake of the forklift is lengthened, and braking
time is increased. So you should lower down the speed to reduce the time of brake. Don’t go up and
down on the slope by force.
7 Before the forklift enters a lift, you should make sure the lift can bear the whole weight ( forklift weight,
goods weight, operator weight). The forklift should enter first and leave at last.
Warning!
Before starting up the lift, you should know it’s loading capacity clearly to avoid an accident.
8 Before passing a bridge, you should reduce the speed and keep a certain distance from the platform
edges.
Dangerous!
Check the loading capacity of the bridge board in advance, verify its security in order to avoid
overturning and falling.
Pay attention:Load capacity must according to following capacity chart

11
Chapter 7 Battery and Charger
1. Replace the battery
You can only change the batteries that are equal to the weight of the original batteries, the weight of
batteries influence the stability and the braking function of the forklift.
Warning!
Don’t change the weight and size of the battery at random, otherwise it will influence the center of
gravity of the forklift. The battery weight is too weight or too light, it will influence the stability and brake
ability of the forklift, the weight must keep the same with the value on the forklift sign.
1.1 The order removing the battery with insufficient power:
1.1.1 Pull out the plug
1.1.2 Open the case cover of the batteries
1.1.3 Cut off the connection between the plug and the cable line.
1.1.4 Take out the group of batteries from the forklift with a proper hook of the battery case.
1.2The order of installing the batteries:
1.2.1 Use the hanging device to hang the battery group and put it into the battery case of the forklift.
1.2.2 Connect the plug with the cable line, and ensure that the positive and negative connection is
correct.
1.2.3 Insert the outlet.
1.2.4 Close the case cover of the batteries.
1.2.5The key switch is off.
2Charging
2.1 Forbid smoking and using the flame while charging.
You can choose the automatic charger to charge, pay attention to not charging insufficiently or
overcharge so as not to damage the batteries.
The most electric current of the charger:
Battery（Ah）Charger（A）
210 30
Dangerous!
The attendant vitriol in the electrolyte of the batteries has corrosion. If it spatters to skin, you should
wash it with water and soap as soon as possible. If it enters eyes, please go to see the doctor and wash
your eyes with clear water. While checking the batteries, you should wear protective glasses and
gloves.
2.2 Preparation for charging after the forklift is used.
The batteries must be charged as soon as possible, and they can’t exceed 24 hours.

12
2.2.1 Make the key switch to the off position after parking, pull out the key .
2.2.2 Open the case cover of the batteries, guarantee it ventilates above the batteries.
2.2.3 Pull out the outlet, connect the plug of the batteries ( movable plug ) with the charger plug.
2.2.4 Open the cover of single battery in order to ventilate.
2.2.5 Turn on the charger to charge.
Warning!
While charging, especially in a closed area, you should keep a good ventilation environment. Oxygen
and hydrogen will emerge in the course of charging, so if it meats flame or electric spark, it can cause
explosion.
So you should shut off the charge power before pulling out the outlet.
2.2.6 During charge
Charging method and using maintenance should consult the instruction of the batteries. Usually you
can judge whether electricity is sufficient with the following methods.
※The proportion of the battery electrolyte keeps basic stability for over 2-3hours continuously.
※Produce strong bubble on the surface of the electrolyte in the batteries, the electrolyte turns from
milky to limpid.
The above-mentioned situations indicate that the electric power of the batteries is sufficient.
2.2.7 After Charge
※Shut off the power and the charger.
※Pull out the charger plug from the battery plug.
※Insert the battery outlet into the battery plug,the key switch in off .
※Close battery cover
The following is the contrast form between the temperature of the batteries with sufficient power and
the proportion of electrolyte.
Temperature°C Proportion g/cm3
-15 1.31
01.30
+15 1.29
+30 1.28
+45 1.27
If it discords with the proportion of the form, you should adjust it by feeding acid liquid or distilled water.
3 Battery Maintenance
3.1 In order to ensure the battery life, the battery should be fully charged before using. The battery
cannot be used, if it is not fully charged.
3.2 The battery should avoid overcharging and over-discharging. Overcharging and over-discharging
will seriously affect the performance and life of the battery.
3.3 The battery liquid plug and venting cover should be kept clean, removed or opened during charging

13
and it should be installed or closed after charging. The battery surface, connecting wires and screws
should be kept clean and dry. If there is sulfuric acid, wipe it off with a cotton yarn and lye. Be careful
not to let the lye enter the battery.
3.4 After the charging is completed, the battery level should be checked and distilled water should be
added to maintain the liquid level. It is strictly forbidden to add dilute sulfuric acid under normal
conditions.
3.5 After the battery is used, it should be charged in time. And the storage time is generally not more
than 24 hours.
3.6 Good ventilation should be maintained during charging. Fireworks are strictly prohibited.
3.7 The battery needs to be charged in a balanced manner in the following cases.
3.7.1 Normally used batteries (balanced charging every 3 months).
3.7.2 Unused batteries for a long time.
3.7.3 There is a “backward battery” in the battery pack (the backward battery means that the voltage
value during charging and discharging is lower than other batteries or batteries that have been
repaired due to faults).
3.8 Balanced charging method.
3.8.1 Perform normal charging first.
3.8.2 Stop charging for 1 hour until fully charged, then charge with 0.25I5 for 1 hour.
Repeat several times according to 3.8.2 until the charger is turned on and there is a bubble in the
battery.
3.9 When the battery is not in use, it must be recharged once according to the normal charging method
each one month.
3.10 The battery should be protected from direct sunlight. And the distance from the heat source should
not be less than 2M.
3.11 Avoid contact with any liquids and hazardous materials. Any metal impurities should not fall into
the battery.
4 Electromagnetic Brake Maintenance
4.1 Preventing rust when the forklift work in an environment with high humidity for a long time. Rust will
affect the use of forklift. Please remove the rust.
4.2 The friction surface should not be contacted with the hand directly, and there must be no oil.
Otherwise, the maximum torque cannot be achieved. Please clean and wipe the clean friction surface.
4.3 When the temperature in the environment is high, please install it in a place with ventilation.

14
Generally, the ambient temperature is -10 °C~40 °C.
4.4 The initial torque value is low. Please use the running torque for a period of time to stabilize.
4.5 Please check regularly. The check the items regularly: Is the switch action normal? Is there any
noise? Is there abnormal fever? Is there any foreign matter, oil stains in the friction part and the rotating
part? Is the clearance at the friction part appropriate? Is the voltage normal?

15
Chapter 8 Faults Diagnosis
（The product controller is equipped with an LED display light that displays different information through
a combination of different color lights.）
LED
Display Programmer display Description Failure cause
1,2 HW FAILSAFE Hardware failure
protection error
1.Controller broken
1,3 M-FAULT M- Output short
circuit
1.M- Output short circuit to ground
2. The directional contactor does not latch
3. The suction speed of the directional
contactor is too slow
1,4 SRO SRO fault
1. Incorrect order of key switch, brake and
direction input
2.SRO Type selection error
3. Brake and direction switch circuits
open
4. The sequential delay is too short
2,1 THROTTLE FAULT
1Accelerator fault
1. Accelerator input line open
2. Accelerator input line to ground or B+
short circuit
3. Accelerator potentiometer failure 4.
Wrong accelerator type selected
2,2 BB WIRING CHECK
Emergency
reverse wiring
failure
1.BB Open circuit wiring
2.BB Detection circuit open
2,3 HPD HPD order fault
1.KSI，Incorrect input sequence for brake
and accelerator
2. The wrong HPD type was selected
3. Accelerator potentiometer is not
adjusted correctly
2,4 THROTTLE FAULT
2
The potentiometer
has a low cut or
short circuit
1. Accelerator low wiring open circuit
2. Accelerator low wiring short circuit
3. The wrong accelerator type was
selected
3,1 CONT DRVR OC Drive output over
stream
1. Short circuit of commutator contactor
coil
2. And the excitation field shortens
3,2 DIR CONT WELDED Commutator
contactor adhesion 1. The commutator contactor is closed
3,4 MISSING
ONTACTOR
No contactor was
found
1. Commutator contactor coil open
2. Loss of commutator contactor coil
3. Shunt magnetic field open circuit
4. An open circuit connecting a
commutatorcontactororshunt
magnetic field
4,1 LOW BATTERY
VOLTAGE
The battery
voltage is too low
1.Battery voltage<16V
2. Battery terminals corroded or loosened
3. The terminal of the controller is loose
4,2 OVER VOLTAGE The battery
voltage is too high
1. Battery voltage >33V
2. The charger is still connected while the
vehicle is running

16
4,3 THERMAL
CUTBACK
Beyond the
operating
temperature, the
current decreases
1.Temperature>85or<-25℃
2. Excessive vehicle load
3. The controller is not installed correctly
4. Work in extreme conditions
LED Display code sample，（2,4 ）：☼☼☼☼☼☼ means LED lights flash twice, pause for a few seconds
and then flash four times.
Customers can troubleshoot through the above method, through the LED lamp read out the code,
please contact our after-sales service.