ASSEMB Y COMPONENTS
4m Platform Height Tower Assembly
1.Advance Guardrail
2. Diagonal Brace
3. 5 Rung adder Frame
4. 5 Rung Frame
5. 3 Rung adder Frame
6. 3 Rung Frame
7.Fixed Platform
8.Trapdoor Platform
9. Horizontal Brace
10. Stabiliser
11. Adjustable eg
12. Castor
3m Platform Height Tower Assembly
1.Advance Guardrail
2.Diagonal Brace
3. 5 Rung adder Frame
4. 5 Rung Frame
5.3 Rung adder Frame
6.3 Rung Frame
7. Fixed Platform
8. Trapdoor Platform
9. Horizontal Brace
10. Stabiliser
11. Adjustable eg
12. Castor
Span 400 Advance Guard
Assembly Guide
This Assembly guide is designed to provide you with step by step instructions to ensure your system
is erected easily and safely. Before assembly please read the safety notes carefully.
Span 400 is a mobile access tower system complying with EN 1004 and WAHR, with vertical ladder access, designed for Class 3 loading.
4. BUI D PROCESS
Safe Working oads and Working Heights
(WAHR)
The safe working load at each level of platform is 360Kg evenly
distributed, regardless of whether one or two platforms are
installed. Therefore, even if two platforms are installed side by side,
total cumulative load shall not exceed 360Kg distributed.
The total loading on the tower structure should not exceed 720kg.
Normal maximum platform height for indoor use is 12m for Double
Width, and 8m for Single Width. For outdoor use, the maximum
height is 8m for Single and Double Widths.
Construction - basic principles
• Allways install Advance Guardrails before platforms.
• Always install the trapdoor platform over the ladder (if one is fitted).
• Ensure the trapdoor hinges to the OUT IDE of the tower (not
the centre).
• Only when the platform is fully guarded is it safe to stand on.
Dismantling
• Remove Diagonal Brace on upper-most level.
• Descend to 1 level below upper-most level.
• Remove upper Platforms.
• Remove upper Advance Guardrails.
• Remove Diagonal Brace from the level on which you are standing.
• Descend to next level down and repeat process.
REMEMBER - NEVER STAND ON AN
UNGUARDED P ATFORM
ASSEMB Y PROCESS
1. Preparation
ocate the tower level adjusters on each leg
at 10cm (4ins) from the bottom of the leg.
Unlock the interlock clips on all frames.
When installed, always move the interlock
clip to the "locked" position.
Sort the braces into horizontal and diagonal
braces - the diagonals are slightly longer.
Unlock the brace locks.
2. Base
Push the four leg assemblies into a pair of
5-rung (2m) frames, with 10cm (4ins) of threaded leg showing.
Follow the erection procedures as shown (Section 4). It is important to follow
the bracing pattern precisely. The tower shown in the build procedure is a
double
width tower. For Single Width Towers,
see notes section.
Note the locking and unlocking position
for the castors as shown here.
3. ocking down the platform
A windlock clip is installed on the platform
at the hook. This is locked as shown here.
Unlocked
ocked
Unlocked
ocked
Unlocked ocked
Unlocked ocked
To Dismantle, follow the build process but in reverse order noting
the following.
• Remove Diagonal Brace on upper-most level.
• Descend to 1 level below upper-most level.
• Remove upper Platforms & Advance Guardrails.
• Descend to next level and repeat process.
To Move the tower to a new position, first prepare the tower.
• Wind speed should not exceed 29 km/hr (force 4).
• Release the caster brakes.
• Raise the stabiliser feet only enough to clear obstructions.
• Ensure tower is empty (material and personnel).
Move the tower manually by applying force at the base - do not
use machinery to push or pull the tower. Once moved - prepare
the tower for use.
• Check all casters and stabilisers are in firm contact with the
ground.
• Check tower is vertical (spirit level) and adjust legs as required.
• Reapply the caster brakes.
DISMANT ING / MOVING TOWERS
ightly tighten the upper clamps above the fourth rung on each corner post. Position the lower
clamp above the bottom rung. Ensure the lower arm is as horizontal as possible. Position the
stabilisers so that the footpads are approximately equidistant from each other, as seen here.
Telescopically adjust the leg and reposition the clamps as required to make firm contact with
the ground. Ensure the clips with locking pin are in place. When in the correct position,
tighten the clamps firmly.
To position the tower against a wall, do not remove the stabiliser, move parallel with the wall.
To position the tower in a corner, remove the inside stabiliser and place the outside two parallel
with the wall.
Ballast weight maybe used to stabilise the tower, please contact your supplier for the correct
amount of ballast weight required.
STABI ISERS
EN1004-3-8/12-XXCD
Platform height 2m, 4m, 6m, 8m, 10m & 12m
Insert castors and adjustable legs into the 3 rung
standard frame and ladder frame. Clip horizontal
brace onto the vertical member just above the 1st
rung, with claw facing outwards.
Attach 2 diagonal braces in opposing directions from
the 1st to the 3rd rung. Check the base with a spirit
level in both vertical and horizontal directions and
adjust the legs if necessary.
2
3
1Insert one standard 5 rung frame and one 5 rung ladder frame
into the lower frames, and engage locking pins. Attach advance
guardrails with upper hooks to inside of vertical tube on top of 7th
rung and lower latch hooks to the outside of vertical tube below
5th rung.
Attach trapdoor platform and non-trapdoor platform to the 5th
rung (ensure trapdoor opens outwards and is located above the
ladder).
Above 2m working height: Fit stabilizers to the base unit - see separate section on
stabilizers below.
Insert one standard 5 rung frame and one 5 rung ladder frame into the lower
frames, and engage locking pins, attach diagonal brace, attach advance guardrails
with upper hooks to inside of vertical tube 7 rungs above platform level and lower
latch hooks to the outside of vertical tube 5 rungs above platform level.
Attach trapdoor platform and non-trapdoor platform 5 rungs above current level
(ensure trapdoor opens outwards and is located above ladder).
Attach 1 diagonal brace 2 rungs above platform level.
Platform height 3m, 5m, 7m, 9m & 11m
Insert castors and adjustable legs into the 3 rung
standard frame and ladder frame. Clip horizontal
brace onto the vertical member just above the 1st
rung, with claw facing outwards.
Attach 2 diagonal braces in opposing directions from
the 1st to the 3rd rung. Check the base with a spirit
level in both vertical and horizontal directions and
adjust the legs if necessary.
2
3
1Insert one standard 3 rung frame and one 3 rung ladder frame
into the lower frames, and engage locking pins. Attach advance
guardrails with upper hooks to inside of vertical tube on top of 5th
rung and lower latch hooks to the outside of vertical tube below
3rd rung.
Attach trapdoor platform and non-trapdoor platform to the 3rd
rung (ensure trapdoor opens outwards and is located above
ladder).
Above 2m working height: Fit stabilizers to the base unit - see separate section on
stabilizers below.
Insert one standard 5 rung frame and one 5 rung ladder frame into the lower
frames, and engage locking pins, attach diagonal brace, attach advance guardrails
with upper hooks to inside of vertical tube 7 rungs above platform level and lower
latch hooks to the outside of vertical tube 5 rungs above platform level.
Attach trapdoor platform and non-trapdoor platform 5 rungs above current level
(ensure trapdoor opens outwards and is located above ladder).
Attach 1 diagonal brace 2 rungs above platform level.
A TERNATIVE CONFIGURATIONS
Single Width Tower
The build process for the Single Width Tower is the same as double width,
with the exception of - 1 Platform used per extension set, rather than 2.
See figure below for reference.
PLATFORM
When building to 6m platform height re-use platforms from 2m
level at 6m level.
The finished tower will have platforms at 4m and 6m heights.
When building to 10m platform height re-use platfroms from 6m
level at 10m level.
The finished tower will have platforms at 4m and 8m and 10m
heights.
PLATFORM
When building to 5m platform height re-use platforms from 1m
level at 5m level.
The finished tower will have platforms at 3m and 5m heights.
When building to 9m platform height re-use platfroms from 5m
level at 9m level.
The finished tower will have platforms at 3m and 7m and 9m
heights.
