Lewis 250 Industrial Tower Product Information And Assembly Manual

250 Industrial Tower

Double Width Tower Assembly Guide

Product Information and Assembly Guide

Product Information

Double Width Tower Assembly Guide

This document will provide all users of Lewis Access Towers with
a complete guide to the erection of the Lewis SW (Double Width)
Aluminium Tower, 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.

The Lewis Tower is a Class 3 Industrial Tower System

The tower should be 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.

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

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 stabilisers should only be lifted 35mm from ground
level.

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

z Check all components (see component list) are available

and in usable condition.

z Damaged or incorrect components should not be used.

Working on the Tower - The Beaufort Windscale

Scale 4. 13 - 18 mph .......................................................................................OK TO WORK ON TOWER

Moderate Breeze: Raises dust, loose paper; moves small branches

Scale 5. 19 - 24 mph ..................................................................................STOP WORKING ON TOWER

Fresh Breeze: Small trees in leaf begin to sway; white crested wavelets form on inland waters

Scale 6. 25 - 31 mph ................................................................................................ DISMANTLE TOWER

Strong Breeze: Large branches in motion; umbrellas used with difficulty; telephone wires “whistle”.

Be aware that wind conditions are a very important consideration when using a tower. Attention must be paid to individual situations
where wind conditions can increase - i.e. when working between buildings, or close to the corner of a building and at open ends.

Never use tarpaulins or similar covers without seeking the correct advice.

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;

z Castings - check for cracks
z Welds - free from cracks
z Tubes/Braces/Rungs - Straight and with indents less than

5mm deep
z Platforms - no damage, free from debris
z Castors - moves freely, threads free from damage, brake

working
z Outriggers - straight, feet flat
z Inspect the equipment for damage regularly, at least daily.

z 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.
z Check the ground on which the tower is to be used is

relatively flat, smooth and capable of supporting the tower.
z 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.
z Do not exceed the SWL.
z Never attach safety harnesses or similar safety equipment

to the tower whilst erecting or dismantling the tower.
z During assembly, the tower should only be climbed from

inside of the frame dimensions, do not scale the tower from

the outside.
z Tools and equipment must be loaded onto the platform

within the confines of the tower dimensions.
z Adjustable legs are to be used for levelling.
z Outriggers should 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.

Ballast for Towers up to 12.2m in height, ballast is not necessary

DOUBLE WIDTH INTERNAL AND EXTERNAL USE

Working Height in (m) 3.2 3.7 4.2 4.7 5.2 5.7 5.2 6.7 7.2 7.7 8.2 8.7

Platform Height in (m) 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7

150mm Castor 4 4 4 4 4 4 4 4 4 4 4 4

Adjustable Leg 500mm 4 4 4 4 4 4 4 4 4 4 4 4

4 Rung 1m Frames 2 2 2 2 2 2

6 Rung 1.5m Frames 2 2 2 2 2 2

8 Rung 2m Frames 2 2 2 4 2 4 4 6 4 6 6

1.8m / 2.5m Fixed Deck 1 1 1 1 1 1 1 1 1 1 1 1

1.8m / 2.5m Trap Deck 1 1 1 1 2 2 2 2 2 2 2 3

1.8 m / 2.5m Horizontal Brace 6 6 6 6 10 10 10 10 10 10 10 14

2.1 m / 2.7m Diagonal Brace 2 2 3 4 5 6 7 8 9 10 11 12

1.8m / 25mm Side Toe Board (Wood) 2 2 2 2 2 2 2 2 2 2 2 2

1.2m End Toe Board (Wood) 2 2 2 2 2 2 2 2 2 2 2 2

Toe Board Clip 4 4 4 4 4 4 4 4 4 4 4

Standard Stabilisers 0 0 4 4 4 4 4 4 0 0 0

Jumbo Stabilisers 0 0 0 0 0 0 0 0 4 4 4

Total Self Weight of Tower (Kg) - 1.8m 92 97 105 128 159 161 174 181 189 201 207 237

Total Self Weight of Tower (Kg) - 2.5m 105 110 119 142 179 190 195 203 211 224 230 266

Working Height in (m) 9.2 9.7 10.2 10.7 11.2 11.7 12.2 12.7 13.2 13.7 14.2

Platform Height in (m) 7.2 7.7 8.2 8.7 9.2 9.7 10.2 10.7 11.2 11.7 12.2

150mm Castor 4 4 4 4 4 4 4 4 4 4 4

Adjustable Leg 500mm 4 4 4 4 4 4 4 4 4 4 4

4 Rung 1m Frames 2 2 2 2 2 2

6 Rung 1.5m Frames 2 2 2 2 2

8 Rung 2m Frames 8 6 8 8 10 8 10 10 12 10 12

1.8m / 2.5m Fixed Deck 1 1 1 1 1 1 1 1 1 1 1

1.8m / 2.5m Trap Deck 3 3 3 3 3 3 3 4 4 4 4

1.8 m / 2.5m Horizontal Brace 14 14 14 14 14 14 14 14 18 18 18

2.1 m / 2.7m Diagonal Brace 13 14 15 16 17 18 19 20 21 22 23

1.8m / 25mm Side Toe Board (Wood) 2 2 2 2 2 2 2 2 2 2

1.2m End Toe Board (Wood) 2 2 2 2 2 2 2 2 2 2

Toe Board Clip 4 4 4 4 4 4 4 4 4 4

Standard Stabilisers 0 0 0 0 0 0 0 0 0 0

Jumbo Stabilisers 4 4 4 4 4 4 4 4 4 4

Total Self Weight of Tower (Kg) - 1.8m 250 260 264 290 298 308 313 344 351 359 366

Total Self Weight of Tower (Kg) - 2.5m 279 290 295 317 335 346 351 388 396 404 412

Industrial Ladder Tower Double Width Tower Assembly Guide Industrial Ladder Tower Double Width Tower Assembly Guide

Assembly Procedure

Double Width Tower Assembly Instructions

1.1 Prepare the frame for assembly.

1.2 Insert the Adjustable Leg, and then the castor into the bottom of the frame.

1.3 Prepare the frame adjacent to the frame in 1.2.

1.4 Insert the adjustable leg, then the castor into the bottom of the frame.

1.5 Clip the horizontal brace onto the frame. Connect the brace directly above the casting at
the first horizontal rung position.

Industrial Ladder Tower Double Width Tower Assembly Guide Industrial Ladder Tower Double Width Tower Assembly Guide