instruction manual en 1298 – im – gb - scaffold tower · pdf fileif it is...

©

This document will provide all users of Lewis Access Towers a

complete guide to the erection of both the Lewis DW (Double

Width) and Lewis SW (Single Width) Aluminium Towers,

employing the 3T (Through the Trap) method.

The user should read the entire contents of this document

before commencing assembly and pay particular attention

to all of the safety instructions.

If the equipment is passed onto another party a copy of

these instructions should accompany the handover.

Two persons are necessary to carry out the erection of the equipment

detailed in this document

It is strongly recommended that the following items of personal protection

equipment be worn at all times: safety boots (EN345 or BS1870 / 4972);

safety helmet (EN397 or BS5240); gloves.

The SWL(Safe Working Load) for each platform is 275kg, evenly dispersed.

Additional items, such as steps or conventional ladders, must never be used

to gain further height from the platform.

The tower must be climbed from within the structure, on no occasions should

the tower be scaled from the outside.

Inspect all the tower components before each use. Pay particular attention to;

Castings - check for cracks

Welds - free from cracks

Tubes/Braces/Rungs - Straight and with indents less than 5mm

deep

Platforms - no damage, free from debris

Castors - moves freely, threads free from damage, brake working

Outriggers - straight, feet flat

Inspect the equipment for damage regularly, at least daily.

Ladder Frame

Toeboard

Platform

Trap and

Fixed

Horizontal

Brace

Diagonal

Brace

Ladder

Frame

2-Rung

Frame

Adjustable

Leg

OutriggerCastor

Fixing the

Outriggers

Fixing the

Toeboards

Fixing the

Braces

Fixing the

Ladders

Fixing the

Castors

© Towers &Sanders Ltd January 2007.Produced by Stilton Surveys Limited www.write4.me.uk

Working on the Tower

The Beaufort Windscale

Scale 4. 13 - 18 mph

Moderate Breeze - Raises dust,

loose paper; moves small branches -

OK to work on tower

Scale 5.19 - 24 mph

Fresh Breeze - Small trees in leaf

begin to sway; white crested wavelets

form on inland waters

STOPworking on tower

Scale 6. 25 - 31 mph

Strong Breeze - Large branches in

motion; umbrellas used with difficulty;

telephone wires "whistle".

DISMANTLE Tower

Be aware that wind conditions are a veryimportant consideration when using a tower.Attention must be paid to individual situationswhere wind conditions can increase - i.e. whenworking between buildings, or close to the cornerof a building and at open ends. Never usetarpaulins or similar covers without seeking thecorrect advice.without seeking proper advice.

The Lewis Tower is a Class 3 Industrial Tower System

BallastFor towers up to 12.2m in height, ballast

not necessary.

The Lewis Tower

toeboard set is

fitted with metal

cleats on each side

situated at the end.

The cleats engage

together to make a

complete set.

Locking pins are

fitted to to hold the

toeboard set tightly

around the

platform.See Photograph 10

The Lewis Tower

diagonal and

horizontal braces

are fitted with

spring clips in side

each hook. Braces

will lock into place

after being pushed

into position. To

remove a brace,

pull the release pin

firmly. The brace

will disengage.

See photograph 2

The Lewis Tower

ladder frames must

be connected

together so that

they become one

continuous run.

Ladders must only

be climbed from

within the confines

of the tower. Never

from the outside

See photograph 6

The Lewis Tower

castors are fitted

with a dual foot

lever lock. To lock

each castor press

firmly on the front

lever (red rubber

cover) until the lever

is approx 25mm

from the ground. To

release press down

on the opposite side

of the lever

See photograph 1

Lewis Tower

outriggers are fitted

with a clamp and

wing nut. The wing

nut should be

slackened until the

clamp fits around

the vertical frame

tube. The lower

outrigger arm must

be in a horizontal

position.

See photograph 5

Instruction Manual EN 1298 – IM – GB

Towers and Sanders Ltd. Tel 0845 257 5991. www.scaffoldtowersales.co.uk

Check all components(see component list) are available and in usable condition. Damaged or incorrect

components should not be used. If damage should occur whilst in use, stop work immediately and isolate the

damaged items from the rest of the tower and contact your supplier.

Check the ground on which the tower is to be used is relatively flat, smooth and capable of supporting the tower.

The SWL(Safe Working Load) of the tower is 275kg per platform, inc the weight of the tower - evenly distributed, up

to a maximum of 950kgs per tower. Do not exceed the SWL.

Never attach safety harnessesor similar safety equipment to the tower whilst erecting or dismantling the tower.

During assembly, the tower should only be climbed from inside of the frame dimensions,do not scale the tower

from the outside. Tools and equipment must be loaded onto the platform within the confines of the tower dimensions.

Adjustable legs are to be used for levelling. Outriggersshould always be deployed when required.

If the area of operation means that the outriggers cannot be deployed in the recommended position – contact Lewis

Towers or your supplier for advice.

Attach trapdoor platform to 6th rung

above the ladder, approx 3.2 metre

above ground.

Fit toeboards securely

Climb through the trapdoor platform,

keep both feet on the ladder,. Attach 4

guard rail braces on the 7th & 8th rungs

above trapdoor to both sides of platform

Stand on the platform and ensure that

the guardrails are securely in place at

the opposite ends of the tower

7

8

9

10

DismantlingTo dismantle both the single and double

width towers, first remove the toeboard

set and send safely down the tower.

Remove the furthest of the four

guardrails and diagonal brace. Go

directly to the trapdoor platform next to

the ladder frame to remove the braces

completely.

To fully dismantle the tower reverse the

erection procedure detailed in this guide

StabilityTowers left unattended or unused for

extended periods in exposed situations

should be dismantled.

Horizontal forces i.e. pressure exerted

when drilling into a building face can

yield unstability in the tower.

The tower must not be used to gain

access to a neighbouring structure.

Tower are not intended to be suspended

Page 1Page 6

WH3.2m3.74.24.75.25.76.26.77.27.78.28.79.29.710.2

PH1.2m1.72.22.73.23.74.24.75.25.76.26.77.27.78.2

Castor444444444444444

Adjustable Leg444444444444444

2 Rung Lad Frame001001100110011

2 Rung End Frame021001100110011

3 Rung Lad Frame010101010101010

3 Rung End Frame010101010101010

4 Rung Lad Frame101121223233434

4 Rung End Frame101121223233434

Standard Platform111111111111111

Trap Platform111122233334444

Horizontal Brace66661010101414141418181818

Diagonal Brace223456789101112131415

Toeboard Set111111111111111

Fixed Stabiliser000444444440000

Adj Stabiliser000000000004444

Total Tower Wght 1.892kg97105128159161174181189201207237250260264

Total Tower Wght 2.5105k110119142179190195203211224230266279290295

DOUBLEWIDTHINTERNALAND EXTERNALUSE

DOUBLEWIDTHINTERNALUSE ONLY

WH10.7m11.211.712.212.713.213.714.2

PH8.7m9.29.710.210.711.211.712.2

Castor44444444


2 Rung Lad Frame00110011

2 Rung End Frame00110011








Diagonal Brace1617181920212223




Large Stabiliser00000000



Your Lewis Tower Supplier

Regularly check that the tower remains level, stable and correctly

erected i.e. all the components are in the right position

Transport and StorageComponents should be transported and

stored vertically. Damaged items must

be repaired by a competent person.

Contact your supplier for advice.

If it is necessary to lift individual components whilst assembling the tower, a dependable knot should

fasten each item.

The tower shouldbe manoeuvred into position by hand by pushing it from the base frame. Never

attempt to use any mechanical equipment (i.e. a forklift etc.) to move the tower.

Be aware of overhead obstructions– pay particular attention to any live electrical cables.

Ensure that no persons, materials or tools are on the tower when it is being moved.

Additional care should be taken when moving the tower on uneven or inclining ground. The use of the

castor locks should be deployed when the tower is in position.

When moving the tower the outriggers should only be lifted 35mm from ground level.

Towers under 4m in height are the only towers that should be moved.

Ensure all spring clips

are located in the

locked position

Insert a leg & castor assembly into the

bottom end of a span & ladder Frame

Clip horizontal brace onto span frame.

Connect the brace straight, above the

casting, at the first horizontal rung

position. Make sure that the spring lever

is positioned to the outside of the tower

Fit Outriggers. Position in opposing

directions. Adjust all four castors to ensure

that the tower is square & level. Use a

spirit level

Fit trapdoor platform onto 2nd rung of the

4 rung frame. Clip 4 guardrail braces

onto the 3rd and 4th rungs from the

ground. Attach diagonal braces.

Climb through the trapdoor platform.

Attach the four rung frames and diagonal

braces

Lewis Single Width Tower Erection Order

1

2

3

4

5

6

Page 2Page 5

Connect together the first & second

brace frame making sure that the brace

is clipped directly above the casting. Clip

the second brace in the same position.

Make sure that the base is level, use a

spirit level and make any alterations to

the adjustable legs

WH3.2m3.74.24.75.25.76.26.77.27.78.28.79.29.710.2

PH1.2m1.72.22.73.23.74.24.75.25.76.26.77.27.78.2

Castor444444444444444


2 Rung Lad Frame001001100110011

2 Rung End Frame021001100110010

3 Rung Lad Frame010101010101010

3 Rung End Frame010101010101010

4 Rung Lad Frame101121223233434

4 Rung End Frame101121223233434




Diagonal Brace223456789101112131415






Total Tower Wght 2.583g86110117153163168177184194198240278313342

SINGLEWIDTHINTERNALAND EXTERNALUSE

WH10.7m11.211.712.212.713.213.714.2

PH8.7m9.29.710.210.711.211.712.2

Castor44444444











Diagonal Brace1617181920212223







SINGLE WIDTHINTERNALUSE ONLY

Outriggers

should

always be

fitted when

specified

To adjust the

alignment and to

ensure that the

tower is level -

turn the knuckle

casting on the

leg clockwise -

to raise and anti-

clockwise to

lower.

Use a spirit level

Insert a leg & castor assembly into the

bottom end of a span & ladder FrameInsert 4 rung frames and clip diagonal

braces onto the lowest rungs and fit

stabilisers to each corner.

Attach trap platform on 4th rung approx. 2.2

metre above ground. Align the trapdoor

alongside the ladder frame

Climb ladder & open trapdoor in platform.

Sit through the platform with both feet on

ladder. Fit four guardrail braces on 5th and

6th rungs directly above the sides of the

platform. Clip diagonal brace into position

Locate standard platform on 8th rung and

position across to opposite side.

Stand on the platform and ensure that the

guardrails are securely in place at the

opposite ends of the tower

Place trap platform alongside standard

platform

Stand on the platform and ensure that the

guardrails are securely in place at the

opposite ends of the tower

Fit toeboard set securely

Climb ladder & open trapdoor on platform.

Sit through the platform with both feet on

ladder. Fit four guardrail braces on 9th and

10th rungs directly above the sides of the

platform. Clip diagonal brace into position

Build next lift of four rung frames & clip

diagonal braces into position

Clip horizontal brace onto span frame.

Connect the brace straight, above the

casting, at the first horizontal rung

position. Make sure that the spring lever

is positioned to the outside of the tower

Connect together the first & second base

frame making sure that the brace is

clipped directly above the casting. Clip the

second brace in the same position. Make

sure that the base is level, use a spirit

level and make any alterations to the

adjustable legs

When fitting the

stabilisers, position

each one in opposing

directions. Adjust all

four castors to ensure

that the tower is

square & level. Use a

spirit level

Lewis Double Width Tower Erection Order

7

5

8

9

10

11

13

12

14

6

2

1

3

4

Ensure all spring clips are located in the

locked position

Page 3

For dismantling procedures please refer to page 6 of this guideet

At this stage a 2.2 metre tower has

now been fully erected

At this stage a 4.2 metre tower has

now been fully erected

To adjust the

alignment and to

ensure that the

tower is level -

turn the knuckle

casting on the leg

clockwise - to

raise and anti-

clockwise to

lower.

Use a spirit level

Outriggers

should always be

fitted when specified

Regularly check that the tower remains level, stable and correctly

erected i.e. all the components are in the right position

instruction manual en 1298 – im – gb - scaffold tower · pdf fileif it is...

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