OPERATORS
MANUAL
Part Number 511146-000-EN
December 2008
Serial Number 000001 and after
MACHINERY:
EC DECLARATION OF CONFORMITY
FOR MACHINERY
Powered Aerial Platform known as:
Type: SNORKEL PAM26 / PAM21
E. C. Type Examination Certicate No:
Note: Modication of the specied unit renders this declaration invalid
OPERATION MANUAL
WARNING
All personnel shall carefully read, understand and follow all safety rules and operating instructions before
operating or performing maintenance on any Snorkel aerial work platform.
Safety Rules
Electrocution Hazard Tip Over Hazard Collision Hazard Fall Hazard
THIS MACHINE IS NOT
INSULATED!
USE OF THE AERIAL WORK PLATFORM: This aerial work platform is intended to lift persons and his tools as well as the
material used for the job. It is designed for repair and assembly jobs and assignments at overhead workplaces (ceilings, cranes,
roof structures, buildings etc.). All other uses of the aerial work platform are prohibited!
THIS AERIAL WORK PLATFORM IS NOT INSULATED! For this reason it is imperative to keep a safe distance from live parts
of electrical equipment!
Exceeding the specied permissible maximum load is prohibited! See “Special Limitations” on page 4 for details.
The use and operation of the aerial work platform as a lifting tool or a crane (lifting of loads from below upwards or from up high
on down) is prohibited!
NEVER exceed the manual force allowed for this machine. See “Special Limitations” on page 4 for details.
DISTRIBUTE all platform loads evenly on the platform.
NEVER operate the machine without rst surveying the work area for surface hazards such as holes, drop-offs, bumps, curbs,
or debris; and avoiding them.
OPERATE machine only on surfaces capable of supporting wheel loads.
NEVER operate the machine when wind speeds exceed this machine’s wind rating. See “Beaufort Scale” on page 4 for details.
IN CASE OF EMERGENCY push EMERGENCY STOP switch to deactivate all powered functions.
IF ALARM SOUNDS while platform is elevated, STOP, carefully lower platform. Move machine to a rm, level surface.
Climbing up the railing of the platform, standing on or stepping from the platform onto buildings, steel or prefab concrete
structures, etc., is prohibited!
Dismantling the swing gate or other railing components is prohibited! Always make certain that the swing gate is closed and
securely locked!
It is prohibited to keep the swing gate in an open position (held open with tie-straps) when the platform is raised!
To extend the height or the range by placing of ladders, scaffolds or similar devices on the platform is prohibited!
NEVER perform service on machine while platform is elevated without blocking elevating assembly.
INSPECT the machine thoroughly for cracked welds, loose or missing hardware, hydraulic leaks, loose wire connections, and
damaged cables or hoses before using.
VERIFY that all labels are in place and legible before using.
NEVER use a machine that is damaged, not functioning properly, or has damaged or missing labels.
To bypass any safety equipment is prohibited and presents a danger for the persons on the aerial work platform and in its
working range.
NEVER charge batteries near sparks or open ame. Charging batteries emit explosive hydrogen gas.
Modications to the aerial work platform are prohibited or permissible only at the approval by Snorkel.
AFTER USE, secure the work platform from unauthorized use by turning both keyswitches off and removing key.
The driving of MEWPs on the public highways is subject to regulations made under the Road Trafc Acts.
NEVER elevate the platform
or drive the machine while
elevated unless the machine is
on a rm, level surface.
NEVER position the platform
without rst checking for
overhead obstructions or other
hazards.
NEVER climb, stand, or sit on
platform guardrails or midrail.
Contents
Chapter 1 Preface ...............................................................................1
Chapter 2 Specication .......................................................................1
Chapter 3 Safety information ..............................................................2
Chapter 4 Plates and Warning Labels .................................................3
Chapter 5 Transport and set up ........................................................12
Chapter 6 Operation guide ................................................................15
Chapter 7 Maintenance guide ...........................................................17
Chapter 8 Battery ..............................................................................20
Chapter 9 Trouble shooting ...............................................................21
Chapter 10 Electrical Schematic and Hydraulic diagram ....................22
Instruction Manual December 2008
Chapter 1 Preface
Read this manual carefully before the machine is taken into use to avoid errors. Correct
operations and regular inspections are factors of vital importance for the operating
economy and lifetime of the machine.
These important parts are described in the following related sections.
Alloy aluminum mast mobile elevating work platform is the most ideal equipment for
aerial work. Single mast mobile elevating work platform is intended to move one person
along with the necessary tools and materials to working position where he will carry out
work on the work platform.
They are generally intended for use on plane and level oors. They are mainly used for
business decoration, industrial facilities maintenance, lamps and lanterns replacement
in halls, maintenance of street lamps, aerial photography and wall cleaning etc.
The single mast mobile elevating work platform has the following characteristics:
1.1 Lift or fall steadily: The seamless transmission is used between the lifting masts,
thus minimizing the amount of sway after lifting.
1.2 Safe and reliable: The four turning stabilizers of the unit connected to the four
corners of the chassis support the MEWP during work. They are designed for leveling
regulation and preventing inclination. They are composed of stand bars and turning
legs. The stand bars are installed in the turning legs. Extending out the turning legs
before operating the unit enlarges the area of supporting. Therefore, the steadiness of
the whole platform is guaranteed.
1.3 Convenient: The whole work platform is light because the lifting masts are made of
alloy aluminum. The structure is compact and the volume is small, so only one person
can move the equipment and carry it through a very narrow passage.
All the information contained in this booklet is based on the data available at the time
of printing; the manufacturer reserves the right to modify its products at any time,
without notice and without liability. It is therefore advisable to regularly check for any
changes.
Chapter 2 Specications
Technical specications and major dimensions are shown in Table 1 and Figure 1,
respectively.
Table 1
The
Max.
Model
PAM21 6500 8500 125 1 600×600 1660×1590 0.75 1.5 1200×690×1980 310 345
PAM26 8000 10000 125 1 600×600 1660×1590 0.75 1.5 1200×690×1980 365 395
platform
height
mm mm kg Person(s) mm mm kw mm kg
Max.
working
height
Rated
load
number of
persons
allowed on
platform
Platform
size
A×B
Outrigger
footprint
C×D
Power
rating
AC DC DC AC DC
Stored dimension
L×W×H
Machine
weight
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December 2008 Instruction Manual
Figure 1
Chapter 3 Safety information
Even if you are familiar with other types of mobile elevating work platforms, read the
following matters needing attention for safe and effective operation:
3.1 Only the trained and qualied are permitted to operate this machine. Always use
safety belt and helmet when aerially working.
3.2 If you are subject to dizziness or seizures, or are bothered by heights, you must not
operate this type of machinery.
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Instruction Manual December 2008
3.3 An operator must not use drugs or alcohol that can change his/her alertness or
coordination. An operator on prescription or over-the-counter drugs needs medical
advice on whether or not he/she can safely operate machines.
3.4 Make sure understand all the safety rules and instructions on plates and warning
labels before operating the machine.
3.5 This machine is designed to use on at and hard ground only. If the ground is
uneven, you must adjust supporting bolts to make sure the chassis is on level. Don‘t
work with force if the conditions for using the equipment are not met.
3.6 Forbid to park the mobile elevating work platform (MEWP) on a slope. When
traveling on slope, make sure there are no personnel or obstructions in front of the
moving direction. Move at a safe speed. Don‘t turn quick on a slope.
3.7 Ensure all stabilizers are engaged properly before elevating the platform.
3.8 In the course of lifting and falling or in lift situation, masts and platform must not
collide with any obstacles or moving objects and you must not move it.
3.9 Do not move the whole unit with electricity.
3.10 It is prohibited of getting on and off the work platform when elevated.
3.11 Keep clear of live electric conductors.
3.12 Don‘t lift if it is overload. The machine can‘t be used as a crane.
3.13 The manual force on the work platform should not exceed 200N.
3.14 Operating this machine should conformance with local national regulations.
3.15 Any unsafe operation patterns on the platform are strictly forbidden.
3.16 Unless in an emergency, the personnel on the ground mustn‘t operate the lower
control device if they do not receive orders from the one are aerially working.
3.17 Don‘t allow people stand or pile up things under the raised platform.
3.18 when operating the machine in a dusty environment ,you should take protective
measures to prevent the graininess dust stirred into the moving parts, which can
causing damage ,thus extend the span of the machine life
3.19 Don‘t change, modify or abandon the safety devices in any way. If there is an
uncertain problem, don‘t dismantle the machine, inform the dealer for help.
3.20 Don‘t set the devices increasing the work height arbitrarily.
3.21 Any additions that would increase the wind load on the machine, e.g. notice
boards, are strictly forbidden.
3.22 Any special working methods or conditions beyond those specied by the
manufacturer shall obtain the guidance and written approval of the manufacturer.
3.23 The optimal using period is within 5 years, reassess the performance of the
machine then and contact the manufacturer for better advice.
Chapter 4 Plates and Warning Labels
Upon unpacking, check the plates and warning labels. Do not operate the machine on
which the plates or labels are missing or illegible. Contact the dealer immediately.
The following plates are visible on the machine.
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December 2008 Instruction Manual
SERIAL
NUMBER
MODEL
NUMBER
NON-LOADED
MACHINE
WEIGHT
lbs
kg
MAXIMUM
WHEEL
LOAD
lbs
kg
ENGINE
POWERED
MODELS
hp
kW
BATTERY
POWERED
MODELS
V
DRIVE
MOTORS
BATTERIES
V
Ah
MONTH / YEAR
OF MANUFACTURE
MAXIMUM
PLATFORM
HEIGHT
RATED NUMBER
OF OCCUPANTS
ft
m
MAXIMUM
DRIVE
HEIGHT
ft
m
MAXIMUM
PLATFORM
LOAD
MAXIMUM
ALLOWABLE
WIND SPEED
mph
m/s
MAXIMUM
PLATFORM
REACH
ft
m
MAXIMUM
ALLOWABLE
MANUAL FORCE
(SIDE PULL)
lbs
N
Indoors
Outdoors
SLOPE SENSOR ALARM SETTING
FRONT
TO BACK
deg
SIDE
TO SIDE
deg
MAXIMUM
OUTRIGGER
LOAD
lbs
kg
MAXIMUM
GRADEABILITY
%
CHARGER
INPUT
V
ASSEMBLED IN
Axle weigh ts with machin e in the stowed pos ition.
lbs
lbs
kg
kg
DRIVE AXLE
STEER AXLE
Indoors
CAUTION
ONLY trained and authorised personnel may operate this machine.Consult the Operation Manual before using this machine.
DO NOT make any changes to this machine, any changes made will invalidate the manufactures warranty and
may contravene legislation.
125Kg = 1 Persons
+ 45Kg Tools
Outdoors
510425-201
PAM26
340
N/A
285.4
---
---
8
---
0 0
12
115 - 230
N/A
N/A
10.7
200
---
1 1
200
---
---
---
---
---
N/A
CN
N/A
N/A
Snorkel,
Vigo Centre, Bi rtley Road,
Washington, Tyne & Wea r,
NE38 9DA, U. K.
100
---
● Nameplate and CE mark
PAM26 Machine plate
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Instruction Manual December 2008
● Operating instructions
Brief Operating Instruction
Leveling the whole equipment
●
Pull up the aligning pin, extend outwards the turning leg, which is connected to 1.
one of the four corners of the chassis, until the aligning pin gets into the working
aligning hole automatically.
Turn the handle clockwise until the supporting foundation contacts the ground for 2.
all the four bolts, go on turning to make the road wheel away from the ground.
Adjust the leveling by observing the spirit level on the chassis. The bubble should 3.
move to the center circle of the gauge when the chassis is set on an even plane.
To store the turning stabilizers of the unit, turn the handle counterclockwise until 4.
the supporting foundation away from the ground. Pull up the aligning pin, retract
inwards the turning leg until the aligning pin gets into the storing aligning hole.
How to use the control buttons •
Before operating the machine, all circuit breakers and the leakage breaker must be 1.
in “ON” position on the electrical box panel.
The mobile elevating work platform uses two sets of upper and lower parallel 2.
control devices.
On either control panels, press “UP” button for lifting and press “DOWN” button 3.
for lowering the platform.
The platform rises or falls when the button is pressed. Upon loosening the buttons 4.
the platform stops.
A big mushroom-shaped button is the stopping button at emergency. Press it only 5.
if the platform can’t stop effectively in the course of rising. Reset the button by
turning the knob in the direction shown by the arrow. Do not pull the knob.
● Emergency Operation
If two sets of the upper and the lower control devices can’t make the platform fall
because of sudden power failure or other causes, turn the valve counterclockwise
and the platform will be lowered slowly. Once the platform falls down to the bottom,
the valve for emergency should be closed.
Emergency Operation
If two sets of the upper and the lower control devices can’t make the platform fall because of sudden power failure or other causes, turn the valve
counterclockwise and the platform will be lowered slowly. Once the platform
falls down to the bottom, the valve for emergency should be closed.
● Warning labels
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EGTWY SERIES DECAL INSPECTION(SINGLE)
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Instruction Manual December 2008
PAM SERIES DECAL INSPECTION(SINGLE)
Part No. Description QTY.
9121015 Control panel on work platform 1
9121017 AC Control panel 1
9121011 DC control panel 1
9221013 Machinery label 1
9321013 Leveling and justment(lift) 2
9321015 Leveling and justment(right) 2
9323011 Brief operating instruction 1
9323013 Gate of platform 1
9323015 Label--Down 1
9323017 Label--Stop 1
9323019 Label—Up 1
9341011 Label—Back-up 1
9421021 Warning—Make sure to position the stabilizers before operating 4
9421023 Max. Load on each stabilizer—2800N 4
9422011 Capacity:125kg 1
9422021 Warning—Make sure the chock is in place during maintenance 1
9422023 Warning—shearing danger, keep hands away 1
9423011 Notice—Allowed number of persons: ONE 1
9423023 Max. Allowed Manual force—200N 1
9423025 Max. Allowed wind speed—10.7m/s 1
9423027 Warning—Keeping safe clearance with live electric conductors 1
9423029
9423031 Warning—Ensure all atabilizers are engaged properly before elevating the platform 1
9423033
9423035 Danger—Any unsafe operation pattern on the platform is strictly forbidden 1
9423037 Danger—Don′t move the whole equipment when in the course of lifting and lifted 1
9423039
9423041
9441011 CE label 1
Caution— The masts or the platform must not bump into any barrier or moving object
during lifting
Warning— The manual forces applied by persons on the work platform should not
exceed the permltted limit when it is raised
Danger— The addition of any device, such as ladder, to increase the working height is
strictly not allowed.
Danger-- Don′t park at the slope, pay attention to the obstacle when moving at the
slope.
1
1
1
1
9441021 Danger—Please don′t stand 1
9421019 Caution—Electrocution hazard 1
9443017 Notice—The charging socket of the battery (For DC) 1
9443019 Notice—Recharging lasts at least 12 hours (For DC) 1
Decal Inspection:
Use the pictures on the next page to verify that all decals are legible and in place.
Below is a numerical list with quantities and descriptions.
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December 2008 Instruction Manual
Chapter 5 Transport and set up
5.1 Transport and Storage
5.1.1 Moving the equipment
5.1.1.1 The platform should fall down to the bottom when you are moving the equipment
to other working places and then retract the turning stabilizers. The supporting
foundations should be made away from the ground and then push the whole machine
to the destination. If the equipment goes across the uneven ground, the supporting
foundations should be away from the ground so far as to prevent the bolt from bending
by the obstacles.
5.1.1.2 If the platform is carried in a little distance, using ―easy loading in pickup
trucks, The sketch below shows the lifting points and method of loading.
Note: 1. If transporting in below way, Platform must be lock in company with chassis.
Avoid platform gliding and chain loosing.
2. When DC machine be transported in below way, Please draw jack, Pull outside
battery box. But raising platform, Battery box must be in this machine, Or reduce
machine stability.
5.1.1.3 If the platform is carried in a long distance, other loading tools should be used
for transportation. A forklift should be used for loading onto other vehicles.
It should be lifted upward from the bottom. The sketch below shows the lifting
Note: Pull the plug of the power supply out of the socket when you move the whole
equipment, cut off the power supply to avoid any unnecessary accidents.
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Instruction Manual December 2008
5.1.2 Storage of the equipment
If you plan to stop using the equipment for a long time, the unit should be cleaned and
protected by a dustproof cover (supplied).
5.2 Set up
5.2.1 Inspection on Opening the Packaging
For the initial use, most users should remove the outer packing of wood box for
equipment, shockproof and knock-preventing packing before using the equipment,
Even if without outer packing, check the whole equipment and its accessories, and the
equipment includes the following parts.
Dustproof Cover
User‘s Manual
Certicate of Quality
1–Front Wheel; 2–Chassis; 3–Turning Stabilizer; 4–Rear Wheel;
5-Masts Assembly; 6–Supporting Bars; 7–Electrical Box;
8–Emergency Lowering Device; 9–Hydraulic Power Pack;
10–Top Cover; 11–Upper Control Device; 12–Guardrail;
13–Platform.
Note: 1. If the unit has been damaged during transport, it must not be put into service,
and you should immediately contact your dealer.
2. The equipment has been lubricated before delivery, and the hydraulic unit has been
lled with hydraulic oil.
3. If a battery has been supplied with the machine, the battery is charged.
Check that the acid level is correct in each cell and that the specic gravity is in
order.
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December 2008 Instruction Manual
5.2.2 Area Needed For Set up the Machine
The area for machine stabilizer footprint shown as the sketch below:
C D
Item Model
mm mm
1 PAM21 1660 1590
2 PAM26 1660 1590
5.2.3 Supporting and Leveling the Unit
There are horizontal forces including operating force and outer wind force etc. on the
platform. If excessive, render the platform unstable. Preventing inclination of the unit
is achieved by extending the four turning stabilizers, which are connected to the four
corners of the chassis. Supporting and leveling the unit is achieved by adjusting the
support bolts of the four turning stabilizers.
The sketch below shows the following parts:
1 - Chassis 2 - Axie Pin
3 - Aligning Pin 4 - Tunning Leg
5 - Handle 6 - Supporting Bolt
7 - Supporting Foundation
The instructions for operation are as follows:
1. Pull up the aligning pin, extend outwards the turning leg, which is connected to
one of the four corners of the chassis, until the aligning pin gets into the working
aligning hole automatically.
2. Turn the handle clockwise until the supporting foundation contacts the ground for
all the four bolts, go on turning to make the road wheel away from the ground.
3. Adjust the leveling by observing the spirit level on the chassis. The bubble should
move to the center circle of the gauge when the chassis is set on an even plane.
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Instruction Manual December 2008
4. To store the turning stabilizers of the unit, turn the handle counterclockwise until
the supporting foundation gets away from the ground. Pull up the aligning pin, retract
inwards the turning leg until the aligning pin gets into the storing aligning hole.
Warning! You must observe the spirit level on the chassis. The bubble should be
within the center circle of the gauge.
Warning! Once you doubt leveling is incorrect, just base on mast and use rectangle
level gauge to verify it.
Warning! Forbid any operation without extending out all the turning stabilizers.
Chapter 6 Operation Guide
6.1 The relevant conditions of using the equipment
6.1.1 The surface of work ground should be at and hard with no obstacles in air and
the safety distance between the equipment and high-tension line is adequate.
6.1.2 The environment temperature should be within -10~38; Height above sea level
≤ 1000 m.
6.1.3 The environment humidity ≤ 90%.
6.1.4 Electrical power: AC 230V ± 10%, 50Hz.
6.1.5 The wind power is not more than Beaufort Scale 5 (the speed of wind is 10.7 m/
s).
6.1.6 The noise grade of this machine is 52~54 dB while operation.
Notes:
1) Prevent the sunlight from directly shining onto the hydraulic and electrical units of
the equipment if the environment temperature is above 32.
2) If the conditions mentioned above are not met, please contact with your supplier and
take the relevant guarantee measures for using the equipment.
6.2 Control Panel function and Description
6.2.1 AC Control Panel
Control panel on electric box
1. Emergency stop switch
2. Up button
3. Down button
Control panel on work
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December 2008 Instruction Manual
6.2.2 DC Control Panel
1 Voltage indicator
2 On/Off key
3 Fuse
4 Emergency stop switch
5 Up button
6 Down button
Socket Plug
6.3 Installation of Power Plug
Put the power plug into the power socket at the job site
in accordance with the rated requirement.
Note: Prior to installation, the rating of the power
source must be conrmed.
6.4 How to use the control buttons
6.4.1 Before operating the machine, all circuit breakers and leakage breaker must be
in ―ON” position on the electrical box panel
6.4.2 The mobile elevating work platform has two sets of controls; one at the base of
the unit and the other on the work platform itself
6.4.3 On either control panels, press ―Up” button for lifting and press ―Down”
button for lowering the platform.
6.4.4 The platform will be raised or lowered so long as the appropriate button is
depressed. The platform will stop in position as soon as the button is released.
6.4.5 Emergency stop: A big mushroom-shaped button is provided at each control
panel for emergency stop. This should be used only when other means to stop the
platform moving fails. Reset the button by turning the knob in the direction shown by
the arrow. Do not pull the knob
Note: The lower controls is installed on the electrical box, control its key. The key
should be taken away if it is not in use so as to prevent the unauthorized personnel
from using it.
6.5 Emergency Operation
In the event of power cut-off or other
reasons and the platform fails to descend
using both the upper and lower controls, an
emergency device consisting of a release
valve located at the side of the chassis is
used to lower the platform. Turn the valve
counterclockwise and the platform will be
lowered slowly. Once the platform has
descended to its lowest position, the valve
should then be closed securely.
Note: The above shows the diagram of
the emergency release valve.
close
open
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Instruction Manual December 2008
Chapter 7 Maintenance Guide
7.1 Control check
For the initial use or use after long periods of storage or changes in environmental
conditions. Check should be made on power supply; hydraulic oils and lubricants to
conrm that are all in well condition.
Caution! Special attention should be paid to check all safety devices of this machine
before using it:
1. Emergency stop switches
There are two emergency stop switches on the machine. Please check the function
of these two emergency stop switches. Stop to use this machine and inform the
manufacturer/agent immediately if they cannot work normally.
2. Emergency release valve
There is an emergency release valve on this machine to lower the platform in the
event of power cut-off or other reasons and the platform fails to descend using both
the upper and lower controls.
Please check the function of the emergency release valve. Stop to use this machine
and inform the manufacturer/agent immediately if it cannot work normally.
7.2 Check before operation
Before you begin your workday, you must inspect your machine and report all
deciencies. Do not operate the machine until deciencies are corrected and all
systems are in good operational condition.
Check for missing, damaged or unreadable safety signs. 1.
Check for broken, missing, damaged or loose parts, especially the screws and 2.
nuts on both sides of the masts.
Check pivot pins for damaged or missing retaining devices. 3.
Check oil level in the tank. 4.
Check hydraulic system for leakage and damage. 5.
Check for cracked welds and other evidence of structural damage. 6.
Check if the supporting foundations rotate freely around the supporting bolts, 7.
lubricate if necessary.
Lubricate positions as mentioned in 7.5 if necessary.8.
Check if there is an abnormal noise or tremble when starting the machine.9.
10. Secure connection of power or battery plug.
Perform necessary maintenance procedure outlined by the manufacture.
7.3 Periodical examinations and tests
This MEWP should be examined and tested according to the following items every 3
months.
1. Lubricate the lifting chain. Check the chain for wear.
2. Check and tighten possible loose screws and nuts.
3. Check brush wear in the pump motor, and replace those worn so that a good contact
is maintained.
4. Visual examination of the structure with special attention to corrosion and other
damage of load-bearing parts and welds.
5. Examination of the mechanical, hydraulic, and electrical systems with special
attention to safety devices as mentioned in clause 7.1.
Note: The frequency and extent of periodical examinations and tests may also depend
on national regulations.
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December 2008 Instruction Manual
7.4 Maintenance
7.4.1 Adjusting the maximum rising force
The proper pressure of hydraulic system has been preset at the factory, however, the
regulating value has been changed because of using the product for a long term.
Notes:
1) When you nd the rising force not reach the rated value, open the hydraulic unit
1 - regulating valve
2 - throttle valve
3 - oil drainage port for
emergency
4 - terminal
5 - oil drain plug
6 - oil ller cap
cover. Please refer to the above sketch, turn the regulating valve 1 of the hydraulic
control device clockwise till the rising rated value.
2) If necessary, a pressure gauge (supplied as an optional attachment) could be
connected to the emergency lowering valve block for hydraulic system pressure
checking.
7.4.2 Adjusting the speed of falling The speed of falling of the platform can also be
adjusted.
Note: Please refer to above sketch. The speed is reduced when you turn the adjusting
screw 2 of ―throttle valve ”clockwise, otherwise, the speed is increased.
7.4.3 Fluid level checking A separate uid level indicator is provided as an attachment
(optional) for both the permissible maximum uid level and the necessary minimum
level when the machine is in transports.
7.4.4 Replacing the hydraulic oil The hydraulic oil of the equipment should be replaced
once after the equipment has been used for half a year to clear off the pollution caused
by wearing of the system in the rst term. Determine the term of the replacement
according to the polluted circumstances of the hydraulic oil later (suggest replacing the
hydraulic oil once every one and half one years).
Note:
1) Selecting of the hydraulic oil depends directly on inuence of the temperature for
using. For non-paramo region, the common hydraulic oil of kinematic viscosity (40)
46mm
2
/s (the nominal value) is recommended for use.
2) When replacing the hydraulic oil, rst place a basin for containing waste oil under
the oil box. Open the oil ller cap 6 at the top of the oil box and then remove the oil
drain plug 5 at the bottom. After draining off the waste oil, ll a little clean hydraulic
oil into the oil box through the oil ller hole and wash it. Tighten the drain plug 5 after
all the oil has been drained. Then ll up with clean hydraulic oil and allow for a slight
overow to displace any air.
7.4.5 Regulating the transmission chain The direct result of wearing the transmission
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Instruction Manual December 2008
chain is to stretch the total length of the chain. Measure the stretching rate of the used
transmission chain by eye every three months. The mast connected to the elongated
chain would be lower in position so that the top of each mast is obviously uneven in
stored position. It may lead to damage on guide roller if the problem is serious.
Note: Every link of the transmission chain is associated with three links of the masts.
The following sketch shows the connection of the masts and the transmission chain.
1) When regulating the length of the chain, please select the mast that needs increasing
its height. As shown in the sketch, regulating the nut 5 tightly makes the last link of the
mast 8 move upwards. The dual nuts 5 should be connected with each other tightly
after regulating the length of the chain.
2) The same link of the mast is pulled by two chains and endures the raised weight loads
at the same time. If one of the chains loses efcacy, the other will play an important
safety role, therefore, try to make both chains as loose or tight as consistent each other
when regulating the length of the chain. The methods of judge at site are as follows:
Press the two chains by hands to compare their tautness under lifting status.
1-next link of the mast;
2-the middle link of the mast;
3-the transmission chain;
4-adjusting bolt;
5-adjusting lock nut;
6-chainwheel;
7-chainwheel shaft;
8-the last link of the mast
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December 2008 Instruction Manual
Warning! Not to enter the space beneath a raised work platform and extending structure
during maintenance unless the chock is in place.
Note: When the work platform of a MEWP needs to
be raised for routine servicing purposes, a captive
chock shall be used to enable the extending structure
to be held in the required position to prevent work
platform from falling down unexpectedly.
Chapter 8 Battery
8.1 Battery charging
8.1.1 Turn the key and switch on, when the display indicated voltage is below 11 volt,
please charge up the battery.
8.1.2 The rated specication of the battery charger supplied:
Input: 220V AC50/60Hz
Output: 12V DC 15A
8.1.3 When start charging, insert the output plug of the charger to the charging socket
of the chassis rst, then the input plug of the charger to the socket of AC power supply.
Turn on the charger switch; battery charging is started with indicator (red lamp) lights
up. Normal recharging lasts about 10 hours. When charging is terminated check that
all cells have reached a density between
1.260~1.280kg/l at 30°C.
When charge is nished, the AC supply should be cut off.
8.1.4 Battery charging should be done in a well-ventilated place and there are no
naked ames, no sparks and no heat radiation sources nearby.
8.1.5 Make sure the level of the electrolyte is above the lower line. If the elements
are not covered, top up with distilled water. Under normal conditions topping up can be
generally done once a month.
8.2 Battery maintenance
The acid level must be checked at least once a week. Relling must not take place until
charging has been nished, as the acid expands during charging.
Only distilled water can be used for relling. The battery surface must be kept clean
and dry, as dirt and wet will cause leakage of current and consequently reduced battery
capacity, Acid spill can be neutralized with soda solution or diluted ammonia, which is
to be washed off with water.
The terminal connections must be rmly tightened and greased with acid-free grease,
which prevents sulphate formations. Sulphate coating reduces the contact surface,
resulting in a considerable voltage
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Instruction Manual December 2008
Cautions
1) Before charging, don‘t open plugs
2) Charge the battery in a well-ventilated place, lifting off the cover or removing the
battery from the machine.
3) Never expose the battery to naked ames. Fires may occur from the formation of
explosive gas.
4) Terminal points must be well tightened and free of scale. Cable insulation must be
in good condition
5) Keep the battery clean, dry and free dust using an antistatic cloth
6) Never place tools or other metal objects on the battery
7) During recharging, check the temperature of the electrolyte, which must not exceed
45°C
8) Avoid contact between skin and acid. If skin or clothes come into contact with this
acid wash with abundant soap and water.
Chapter 9 Trouble shooting
Most of the problems you meet with are easy to solve when you are operating on
the mobile elevating work platform. Please nd out your problems in this part and
solve it according to the recommended steps. If you can‘t still solve it according to
the instructions here, please contact with your suppliers or the experienced service
personnel for help.
9.1 Problem 1 – The indicator light of the power supply is off and the platform doesn‘t
rise or fall.
9.1.1 Check whether the electrical wire is connected with the socket of the electricity
supply correctly or not.
9.1.2 Check the circuit breaker to make sure it‘s in ‗ON‘ position.
9.1.3 Check the leakage breaker to make sure it‘s in ‗ON‘ position.
9.2 Problem 2 – The power indication light is on, but there is a ‗ticking” sound in the
electric box when the ‗UP‘ button is pressed and the platform can‘t lift or it can only
rise up to a limited height.
9.2.1 Check the electrical cable to see if it is too long or too thin. The diameter of
cable wire should be minimum 1.0 mm when the wire length is less than 25 meters,
and minimum 1.5 mm when the wire length is above 25 meters and less than 50
meters. You can try to plug the equipment cord directly in the xed socket, instead of
to an extension cord.
9.2.2 Check power voltage to make sure it is within allowable limits.
9.3 Problem 3 – Excessive noise from hydraulic power unit during ‗lifting‘
operation.
9.3.1 Check oil box to make sure there is sufcient hydraulic oil in the tank.
9.3.2 Check whether the oil ller cap is excessively sealed to make the oil pump
difcult to absorb the oil or not.
9.3.3 Check the mounting screws of the electric motor and cover etc. to see if they
have become loose.
9.3.4 Check whether the environment humidity is in accordance with the stipulated
conditions or not.
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December 2008 Instruction Manual
9.4 Problem 4 – Leakage of the hydraulic oil
9.4.1 Check all piping connections for their tightness, and tighten up if necessary.
9.4.2 Check whether the viscosity of the used hydraulic oil is too low or not.
9.5 Problem 5 – All the indicator lights are on, but the platform couldn‘t rise or fall.
Check the Emergency stop switches on both upper and lower control device.
Reset the switch by turning the knob in the direction shown by the arrow.
Chapter 10 Electric Schematic and Hydraulic Diagram
10.1 Electrical Schematic (next page)
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Instruction Manual December 2008
10.1.1 Electrical Schematic of AC power supply
Electrical Schematic of AC power
Page24
December 2008 Instruction Manual
AC ELECTRICAL COMPONENTS
No SIGN DESCRIPTION PN REMARK
1 XP1 Battery Pin YDP3
2 QF1 Breaker DZ47LE-32 C16 16A(RCD1)
3 QF2 Breaker DZ47-60 C10 10A
4 RCD1 Creepage Switch DZ47LE-32 C16 16A(RCD1)
5 TC1 Transformer BK-50 AC220V/24V 50~60HZ
6 HR1
7 SB1
Electrical Source
Indicator
Emergency Stop
Switch
XB2-BVM4LC AC220V
ZB2BS54C/ZB2BZ102C-6A
8 SBS1 Raise Button ZB2BA3C/ZB2BZ101C-6A
9 SBS2 Lower Button ZB2BA5C/ZB2BZ101C-6A
10 SBS3 Raise Button ZB2BA3C/ZB2BZ101C-6A
11 SBS4 Lower Button ZB2BA5C/ZB2BZ101C-6A
12 KM AC Contactor CJK2 0910 AC24C 10A
13 VC1 Rectier QSZL-B 6A/1200V
14 Yv1
Lowering Relief
Valve
DC12V
15 SQ1 Limit Switch AZ8 104 5A250VAC
16 M1 Motor(ac)
MFWC07—(0.75)1.5KW
AC110V/220V
Page25
Instruction Manual December 2008
10.1.2 Electrical Schematic of DC power supply
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December 2008 Instruction Manual
DC electrical components
No SIGN DESCRIPTION PN REMARK
1 E Battery 80D26/20HR12V-80A/H
2 M1 Motor(DC) W800663 DC12V-1.5KW
3 FU1 Fuse 100A
4 KM1
5 KM2 DC Contactor (pump) W800801-1 DC 12V 80%
6 YV1 Lowering Relief Valve DC12V
7 SQ1 Limit Switch AZ8 104 5A250VAC
8 FU2 Fuse 10A
9 SB1 Key Switch ZB2BG2C/ZB2BZ101C-6A
10 SB2 Emergency Stop Button ZB2BS54C/ZB2BZ102C-6A
11 SBS1 Raise Button ZB2BA3C/ZB2BZ101C-6A
12 SBS2 Lower Button ZB2BA5C/ZB2BZ101C-6A
13 LED Display DC 0~12V
14 SB3 Emergency Stop Button ZB2BS54C/ZB2BZ102C-6A
15 SBS3 Raise Button ZB2BA3C/ZB2BZ101C-6A
16 SBS4 Lower Button ZB2BA5C/ZB2BZ101C-6A
DC Contactor( Electrical
Source)
MZJ-200S/1201B DC12V/
100A
10.2 Hydraulic Diagram
1—Hydraulic Power Pack 2—Emergency Lowering Valve
3—Solenoid Valve 4— Piping
5—Hydraulic Cylinder 6—Throttle Valve
Page27
Instruction Manual December 2008
Local Distributor / Lokaler Vertiebshändler / Distributeur local
El Distribuidor local / ll Distributore locale
EUROPE, MIDDLE EAST
AFRICA & ASIA
PHONE: +44 (0) 845 1550 057
FAX: +44 (0) 845 1557 756
NORTH & SOUTH AMERICA
PHONE: +1 785 989 3000
TOLL FREE: +1 800 225 0317
FAX: +1 785 989 3070
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PHONE: +61 2 9725 4000
FAX: +61 2 9609 3057
NEW ZEALAND
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