WELLTECH SW2000L Reference manual

Scaffold Introduction and Guideline
SW2000L
DW2000L
Mobile Aluminium Tower
750/1350 Ladderspan
3T - Through the Trapdoor Method

Scaffold Introduction
Welltech Modular Aluminum Scaffold is an all-rounded, versatile and user-friendly
aerial solution for all access needs. The system can be easily erected and with
highly customizable assembly it meets all site constraints and provides safe and
efficient working platform for all purposes.
The key to the system is that its quick assembly thanks to smart locking claws at
the ends of horizontal and diagonal bracing. It allows an instant lock-up possibly
performed by one single hand, however, with the reverse unlocking plug, two
hands are needed to unplug the bracing thus highly promoting the security of the
tower.
Welltech Modular Aluminum Scaffold boasts a comprehensive range of standard
frames, walk-through frames and Laddaspan, all of which fully comply with BS
1139. The manual combination of 3-rung, 4-rung and 5-rung frames ensures a
customizable platform height.
This guideline provides you instructions to use the 3T (Through the Trapdoor)
method. Ensure your system is assembled easily and safely.
Synopsis
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Scaffold Introduction and Guideline_TUV
“Please read this guide carefully.”
Instruction Manual EN 1298-IM-EN
Welltech Aluminum Scaffold has been tested and certificated to EN 1004

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Scaffold Introduction and Guideline_TUV
Stability of Scaffold
A scaffold should not be used unless it is properly constructed and is suitable for
the purpose for which it is required and has been inspected.
Where the scaffolding exceeds 2m in height, each contractor (including subcon-
tractors and the self-employed) should be satisfied that the scaffold has been
inspected by a competent person within the previous 7 days and should therefore
ask to see the report of the inspection.
Users (including contractors and workers) who discover a serious defect in a scaf-
fold, which may adversely affect their or another’s safety, should stop using that
scaffold and report the defect to the site management.
Scaffold Users
See whether the scaffold is vertical or needs readjustment
Check whether the structure assembly is still correct and completed
Check the wind condition is suitable for ectrction and use moving tower.
Confirm that no environmental changes influence safe use of the scaffold
Be provided with relevant information on the conditions of use of the scaffold,
including the loading capacity of the scaffold, in a comprehensible form
Not overload the scaffold either locally or in general
Not interfere with or misuse the scaffold
Users should

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Scaffold Introduction and Guideline_TUV
Promptly report defects in the scaffold to whoever is in control of the scaffold
Not leave a scaffold in a hazardous condition for current or subsequent users
Check all parts, auxiliary tools and safety equipment( helmet, ropes ...) are available
on site.
All casters should be locked when loading and unloading and using the mobile access
tower;
Check the ground on which the mobile access tower is to be assembled and moved in
level,even, no obstructions and capable for supporting the tower.
When moving the mobile access tower to another duty station, no one should stay on
the mobile workbench or place any items on the platform that may increase the risk of
falling over it or may move on the mobile access tower. Loose objects (such as hand
tools);
When using the mobile scaffold tower in through-buildings,on uncovered buildings or
on the corners of buildings,pay particular attention to the wind conditions to prevent
the mobile scaffold tower from tilting over.

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Scaffold Introduction and Guideline_TUV
Precautions For Moving
Wind speed and wind load
Effect of Wind Loads on the Tower
Wind Description Beaufort Scale Beaufort No Speed
(m.p.h.)
Speed
(m/sec.)
Medium Breeze
Strong Breeze
Gale Force
Raises dust and
loose paper,
Twigs snap off.
Large branches in
motion,
Telegraph wires
whistle.
Walking is difficult
4
6
8
8-12
25-31
39-46
4-16
11-14
17-21
The acceptable wind speed for the free standing tower is 17mph.
If the wind speed reaches 25mph the tower should be tied in to a rigid structure.
At 40mph, the tower should be dismantled.
“User should pause work on the tower when the wind speeds over
7.7metres per second (17m.p.h).”

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Scaffold Introduction and Guideline_TUV
How to move scaffolding Tower
Before moving the scaffolding tower, make sure everyone has left the rack and
clean up all the debris. No person or materials should be on the tower during
movement.
Tower should be reduced in height to 4m platform height before movement.
Release the support of the outriggers to a half height from the ground
(ie 12 mm)
Determining the safety of the tower route and having sufficient height to avoid
collisions with wires, ceiling devices, beams, etc.
The tower should only be moved by manual effort, and only from the base.
Must be pushed at the bottom of the frame
When stopping the move, all casters must be locked immediately
Check the tower is still correct and complete before use.
*Do not move the tower in wind speeds over 16 metres per second (12mph).
Step
Ensure castors are re-locked and all components touch ground once re-positioned
To realign the mobile access tower (see the 6.3c)
1.
2.
3.
4.
5.
6.
7.
8.
“Please pay attention when you moving the Scaffolding Tower, and watch
out with the ground and people. ”

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Scaffold Introduction and Guideline_TUV
Inspection Before and During Use
Scaffolds should be inspected before use and again at least every 7 days and after
any circumstance that might affect the stability or safety of the scaffold. Such circum-
stances include:
Modification
Period without use
Exposure to bad weather
Damage, including impact of traffic or site equipment with the scaffold
The scaffold inspection checklist can be follow:
1.
2.
3.
4.
1. Ensure all brace claws operate and lock correctly prior to erection
2. check components prior to erection
3. check tower prior to use
4. Tower upright and level
5. Castors locked and legs correctly adjusted
6. Diagonal braces fitted
7. Stabilisers/outriggers fitted as specified
8. Platforms located and wind locks on
9. Toeboards located Check
10. guardrails are fitted correctly
Checklist

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Scaffold Introduction and Guideline_TUV
A report of the inspection should be made on a suitable form and a copy of the report
should be retained on site.
It is not allowed to extend the height of the platform by the use of ladders, boxes or
other devices.
It is not allowed to extend the height of the platform by the use of ladders, boxes or
other devices.
Temporary structures such as scaffolds and working platforms should be designed
by a competent person or a professional engineer to ensure that they are securely
constructed with sufficient working load. They should also be erected, altered,
dismantled and used in accordance.
“Please check the marking with scaffolds when you using.
Keep the report on site and available for inspection.”

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Scaffold Introduction and Guideline_TUV
Maximum platform height for outdoor use is 8 meter.
Height to Basw Ratio = Maximum
3 : 1
3
1
Maximum platform height for indoor use is 12 meter.
Height to Basw Ratio = Maximum
3.5 : 1
3.5
1
The Basic Knowledge Required for scaffolds Operatiors
750 Ladderspan
1350 Ladderspan

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Scaffold Introduction and Guideline_TUV
Load Path:
To following the EN1004:2004, the gravity loads has designed to including dead
load, self-weight and uniform distribution load acting on the platform will be resist
by the bending stress of the platform and then the loading will transfer to the alu-
minium beams supporting the platform and then the loading will be transfer to the
vertical aluminium elements and the bracings are added as restrain to the vertical
members.
For the lateral load, the loading will be transfer to the structure and then resist by
the vertical elements and the stabilizers by push and pull effect. The bracing
members are used to stiffen the structure. And the stability of the structure is
resisted by the self-weight of the structure and the contribution of the stabilizer
which increases the effective base dimensions of the tower.
NUMBER OF WORKING PLATFORMS ALLOWED
& PLATFORMS ALLOWED

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Scaffold Introduction and Guideline_TUV
The load path report detail given in Appendix A.
The Suppliers instruction manual will detail the maximum lads that the tower can
support.
The safe loading:
Maximum Design Load supported on platform, e.g. 275kg.
Maximum Design Load supported on whole tower, e.g. 950kg.
Maximum Design Load of castors e.g. 300kg
Uniform distributed load 2.0kN/m2 (Load Class 3)

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Scaffold Introduction and Guideline_TUV
Vertical Alignment
Connections - The Wellclaws
Horizontal and diagonal bracing are fundamental in the structure of scaffolding, with claws
locking them onto frames. It ensures rigidity and squareness of the erected structure.
Unlike conventional claws, Wellclaws are specially designed for easy installation and difficult
detaching. Efficiency of assembling should, under no circumstance, be achieved in the
expense of safety. While the one-hand snapping onto frames facilitates the quick and
self-locking assembly, the pulling motion required to unfasten the latches ensures that two
hands area required, eliminating the possibility accidental loosening or detaching.
The hook latches of horizontal and diagonal bracing are in green and in red respectively for
identication purpose.
Using a spirit level to set the adjustable legs and check the frames are vertical and level.

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Scaffold Introduction and Guideline_TUV
“Stabilizers or outriggers and ballast shall always
be fitted when specified.”
Connections - The Flames
Install the next upper frames and check the frame interlock clips are engaged.
Stabilizer / Ballast
Stabilizers or outriggers and ballast are included in the taller towers for extra stability. The
stabilizers or outriggers should be used to increase the width of the scaffold. Ensure that the
base of the stablilzers are fully grounded.
The Parts list show the recommended stabilisation. (To improve rigidity, larger stabilisers can
be used at a lower level than shown in the parts list table)
Ballast must be of solid materials (i.e. not water or loose sand) and should not be positioned
to overload individual legs. Ballast should be secured against accidental removal where
practicable, and be supported on the lowest rung of the bottom frame.
Lifting of Components
Tower components should be lifted using a reliable lifting material (e.g. strong rope), employ-
ing a reliable knot (e.g. clove hitch), to ensure safe fastening and always lift within the foot-
print of the tower.
Assembled mobile towers should not be lifted with a crane or other lifting device.
“Do not jump on the platform”
“Do not create horizontal loads”
*For example,by working on close constructions,which could
cause the mobile scaffold tower to tilt over.

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Scaffold Introduction and Guideline_TUV
Safety work macro code
Use flow-through metal frame
1) Mobile access tower, which can only be built or dismantled by qualified trainees
2) The top guardrail frame of the mobile access tower shall not be less than 950 mm
and not more than 1150 mm. The height of the guardrail in the middle shall not be less
than 450 mm and shall not be higher than 600 mm. The height of the skirting board shall
not be lower at 200 mm, the platform of the workbench must be sealed and stabilized.
3) Mobile access tower must be inspected before they can be used.
4) To ensure that the mobile access tower is adjusted to balance and stability, the
frame components must be tightly fastened to prevent loosening due to shocks. At the
same time, we must ensure that the ground is level, there is no recess, no height and
inequality. The ground needs to be able to load the weight of the tower.
5) The overall structure of the mobile access tower shall be stable. Refer to the manu-
facturer's plan when constructing. If necessary, other stable equipment such as: diagonal
brace, stabilizer should be added.
6) Damaged flow-through metal frame must be immediately stopped and notified to
the superior.
7) The frame shall be moved to ensure that the personnel on the mobile access tower
have left and returned to the ground. When moving the tower, move all the materials and
tools on the rack back to the ground to move the frame and make sure all nearby employ-
ees are in a safe position.
8) The platform of the mobile access tower shall not be overloaded, and the materials
and debris on the platform shall be cleaned frequently.
9) It is not allowed to climb outside the platform of the mobile access tower.
10) Each mobile access tower shall be marked with a specific reference number and
the general rules for the manufacturer, and the number shall be on the valid document for
inspection.
11) Beware of horizontal and vertical loads (e.g. power tools, wind loads) which could
generate instability.

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Scaffold Introduction and Guideline_TUV
Ties
1) Ties should be used when the tower goes beyond its safe height, beyond the
limits of the stabilisers/outriggers, or if there is a danger of instability.
2) When the tower is left unattended, it should be tied.
3) For further information on tying-in a tower please contact your supplier or the
manufacturer.
Maintenance & Storage
1) All components and their parts should be regularly inspected to identify
damage, particularly to joints. Lost or broken parts should be replaced.
2) Components with lock should be checked regularly to ensure they can lock
correctly.
3) Components should be stored with due care to prevent damage.

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Scaffold Introduction and Guideline_TUV
Single-width Standard Frame
Double-width Standard Frame

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Scaffold Introduction and Guideline_TUV

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Scaffold Introduction and Guideline_TUV
Stabilizer
3-Rung Standard Frame
3-Rung Laddaspan
Castor
Adjustable Leg
Horizontal Brace
Aluminum Toeboard Set
Platform
Trapdoor Platform
4-Rung Standard Frame4-Rung Laddaspan
4-Rung Laddaspan 4-Rung Standard Frame
Guardrail Frame (Upper)
Guardrail Frame (Lower)
Diagonal Brace
Trapdoor Platform
2-Rung Laddaspan 2-Rung Standard Frame
Horizontal Brace
Horizontal Brace

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Scaffold Introduction and Guideline_TUV
Parts List
1.14 1.88 2.34 2.81 3.27 3.73 4.20
Code Description Weight (kg)
CB6S
6'' Castor 3.8 4 4 4 4 4 4 4
AL290
Adjustable Leg 1.3 4 4 4 4 4 4 4
HFR-0750(U)
750mm Guardrail Frame (Upper) 1 2 2 2 2 2 2 2
HFR-0750(D)
750mm Guardrail Frame (Lower) 1.7 2 2 2 2 2 2 2
F0750-2 750mm 2-rung Standard Frame 3.5 1 1 2 1
F0750-2L 750mm 2-rung Laddaspan 4.2 1 1 2 1
F0750-3 750mm 3-rung Standard Frame 4 1 1
F0750-3L 750mm 3-rung Laddaspan 5.8 1 1
F0750-4 750mm 4-rung Standard Frame 5 1 1 1 1
F0750-4L 750mm 4-rung Laddaspan 7.6 1 1 1 1
F0750-5 750mm 5-rung Standard Frame 6 1 1
F0750-5L 750mm 5-rung Laddaspan 9.5 1 1
HB-2000 2000mm Horizontal Bracing 2 6 6 6 10 10 10 10
DB-2000 2000mm Diagonal Bracing 2.2 2 2 4 4 4 4 6
PT-2000 2000mm Trapdoor Platform 15.5 1 1 1 2 2 2 2
TBA-0750 750mm Aluminum Toeboard Set 7 1 1 1 1 1 1 1
ST2 Adjustable Stabilizer (S) 4.5 4 4 4 4 4
ST4 Adjustable Stabilizer (L) 5.3
ST6 Adjustable Stabilizer (XL) 13
Aggregate Quantity 24 24 30 37 37 39 41
Platform Height (m)
Quantity
*Number of people required for erection and dismantling: 1 people / 2 metres
4.66 5.13 5.59 6.05 6.52 6.98 7.45 7.91
Code Description Weight (kg)
CB6S
6'' Castor 0.22 4 4 4 4 4 4 4 4
AL290
Adjustable Leg 3.8 4 4 4 4 4 4 4 4
HFR-0750(U)
750mm Guardrail Frame (Upper) 1.3 2 2 2 2 2 2 2 2
HFR-0750(D)
750mm Guardrail Frame (Lower) 1 2 2 2 2 2 2 2 2
F0750-2 750mm 2-rung Standard Frame 1.7 1 1 2 1 1 1 2 1
F0750-2L 750mm 2-rung Laddaspan 3.5 1 1 2 1 1 1 2 1
F0750-3 750mm 3-rung Standard Frame 4.2 1 1
F0750-3L 750mm 3-rung Laddaspan 4 1 1
F0750-4 750mm 4-rung Standard Frame 5.8 2 1 2 2 3 2 3 3
F0750-4L 750mm 4-rung Laddaspan 5 2 1 2 2 3 2 3 3
F0750-5 750mm 5-rung Standard Frame 6 1 1
F0750-5L 750mm 5-rung Laddaspan 9.5 1 1
HB-2000 2000mm Horizontal Bracing 2 14 14 14 14 18 18 18 18
DB-2000 2000mm Diagonal Bracing 2.2 6 6 6 6 8 8 8 8
PT-2000 2000mm Trapdoor Platform 15.5 3 3 3 3 4 4 4 4
TBA-0750 750mm Aluminum Toeboard Set 7 1 1 1 1 1 1 1 1
ST2 Adjustable Stabilizer (S) 4.5 4
ST4 Adjustable Stabilizer (L) 5.3 4 4 4 4 4
ST6 Adjustable Stabilizer (XL) 13 4 4
Aggregate Quantity 46 46 48 48 55 55 57 57
Platform Height (m)
*Number of people required for erection and dismantling: 1 people / 2 metres
Quantity
750 Ladderspan to EN1004:2004: Lengths - 2m

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Scaffold Introduction and Guideline_TUV
1350 Ladderspan to EN1004:2004: Lengths - 2m
1.41 1.88 2.34 2.81 3.27 3.73 4.20 4.66
Code Description Weight
(kg)
CB6S
6'' Castor 3.8 4 4 4 4 4 4 4 4
AL290
Adjustable Leg 1.3 4 4 4 4 4 4 4 4
HFR-1350(U)
1350mm Guardrail Frame (Upper) 1.6 2 2 2 2 2 2 2 2
HFR-1350(D)
1350mm Guardrail Frame (Lower) 2 2 2 2 2 2 2 2 2
F1350-2 1350mm 2-rung Standard Frame
3.6 1 1 2 1 1
F1350-2L 1350mm 2-rung Laddaspan
4.8 1 1 2 1 1
F1350-3 1350mm 3-rung Standard Frame 5.5 1 1
F1350-3L 1350mm 3-rung Laddaspan 8 1 1
F1350-4 1350mm 4-rung Standard Frame 6 1 1 1 1 2
F1350-4L 1350mm 4-rung Laddaspan 10 1 1 1 1 2
F1350-5 1350mm 5-rung Standard Frame 8.5 1 1
F1350-5L 1350mm 5-rung Laddaspan 11.2 1 1
HB-2000 2000mm Horizontal Bracing 2 6 6 6 10 10 10 10 14
DB-2000 2000mm Diagonal Bracing 2.2 2 2 4 4 6 6 8 8
PP-2000 2000mm Platform 14 1 1 2 1 1 1 2 1
PT-2000 2000mm Trapdoor Platform 15.5 1 1 1 2 2 2 2 3
TBA-1350 1350mm Aluminum Toeboard Set 8.5 1 1 1 1 1 1 1 1
ST2 Adjustable Stabilizer (S) 4.5 4 4 4 4
Aggregate Quantity 25 25 28 34 40 42 45 49
*Number of people required for erection and dismantling: 1 people / 2 metres
Quantity
Platform Height (m)
5.13 5.59 6.05 6.52 6.98 7.45 7.91 8.37
Code Description Weight (kg)
CB6S
6'' Castor 3.8 4 4 4 4 4 4 4 4
AL290
Adjustable Leg 1.3 4 4 4 4 4 4 4 4
HFR-1350(U)
1350mm Guardrail Frame (Upper) 1.6 2 2 2 2 2 2 2 2
HFR-1350(D)
1350mm Guardrail Frame (Lower) 2 2 2 2 2 2 2 2 2
F1350-2 1350mm 2-rung Standard Frame
3.6 1 2 1 1 1 2 1 1
F1350-2L 1350mm 2-rung Laddaspan
4.8 1 2 1 1 1 2 1 1
F1350-3 1350mm 3-rung Standard Frame 5.5 1 1
F1350-3L 1350mm 3-rung Laddaspan 8 1 1
F1350-4 1350mm 4-rung Standard Frame 6 1 2 2 3 2 3 3 4
F1350-4L 1350mm 4-rung Laddaspan 10 1 2 2 3 2 3 3 4
F1350-5 1350mm 5-rung Standard Frame 8.5 1 1
F1350-5L 1350mm 5-rung Laddaspan 11.2 1 1
HB-2000 2000mm Horizontal Bracing 2 14 14 14 18 18 18 18 22
DB-2000 2000mm Diagonal Bracing 2.2 10 10 12 12 14 14 16 16
PP-2000 2000mm Platform 14 1 1 2 1 1 1 2 1
PT-2000 2000mm Trapdoor Platform 15.5 3 3 3 4 4 4 4 5
TBA-1350 1350mm Aluminum Toeboard Set 8.5 1 1 1 1 1 1 1 1
ST2 Adjustable Stabilizer (S) 4.5 4 4 4
ST4 Adjustable Stabilizer (L) 5.3 4 4 4 4 4
Aggregate Quantity 51 53 56 60 62 64 67 71
Quantity
*Number of people required for erection and dismantling: 1 people / 2 metres
Platform Height (m)
8.84 9.30 9.77 10.23 10.69 11.16 11.62 12.09
Code Description Weight (kg)
CB6S
6'' Castor 3.8 4 4 4 4 4 4 4 4
AL290
Adjustable Leg 1.3 4 4 4 4 4 4 4 4
HFR-1350(U)
1350mm Guardrail Frame (Upper) 1.6 2 2 2 2 2 2 2 2
HFR-1350(D)
1350mm Guardrail Frame (Lower) 2 2 2 2 2 2 2 2 2
F1350-2 1350mm 2-rung Standard Frame
3.6 1 2 1 1 1 2 1 1
F1350-2L 1350mm 2-rung Laddaspan
4.8 1 2 1 1 1 2 1 1
F1350-3 1350mm 3-rung Standard Frame 5.5 1 1
F1350-3L 1350mm 3-rung Laddaspan 8 1 1
F1350-4 1350mm 4-rung Standard Frame 6 3 4 4 5 4 5 5 6
F1350-4L 1350mm 4-rung Laddaspan 10 3 4 4 5 4 5 5 6
F1350-5 1350mm 5-rung Standard Frame 8.5 1 1
F1350-5L 1350mm 5-rung Laddaspan 11.2 1 1
HB-2000 2000mm Horizontal Bracing 2 22 22 22 26 26 26 26 30
DB-2000 2000mm Diagonal Bracing 2.2 18 18 20 20 22 22 24 24
PP-2000 2000mm Platform 14 1 1 2 1 1 1 2 1
PT-2000 2000mm Trapdoor Platform 15.5 5 5 5 6 6 6 6 7
TBA-1350 1350mm Aluminum Toeboard Set 8.5 1 1 1 1 1 1 1 1
ST4 Adjustable Stabilizer (L) 5.3 4
ST6 Adjustable Stabilizer (XL) 13 4 4 4 4 4 4 4
Aggregate Quantity 73 75 78 82 84 86 89 93
Quantity
*Number of people required for erection and dismantling: 1 people / 2 metres
Platform Height (m)