AFFIX MAST Series User manual

Assembly Manual
Stair Towers MAST Series
BS1139-6:2014
No: CE/21-22/046

Aluminium Stair Towers
MAST620
The AFFIX Stair Tower is an access tower manufactured in our ISO 9001
accredited facility.
The AFFIX Stair Tower is an access tower manufactured in our ISO 9001
accredited facility.
This user guide provides you with step by step instructions to ensure your
system is assembled easily and safely, using the 3T (Through the Trapdoor)
method.
This user guide provides you with step by step instructions to ensure your
system is assembled easily and safely, using the 3T (Through the Trapdoor)
method.
BS1139-6 3 7/9 XXXD
01
MAST620_AM-3T_V3.0

WARNING
NEVER FORGET TO LOCK THE
CASTOR WHEELS
02USAGE ADVICEUSAGE ADVICE
DESCRIPTION:
Through The Trapdoor (3T) Method:
The 3T method of construction is an approved method of assembly and it minimizes the risk of
a fall from height. The erector can complete an ‘assembly or access’ platform level from which
the ‘next lift’ of frames, braces and platform is added, until the final working height of the tower
is achieved. By following the 3T method, the erector sits through the hatch of the platform with
their feet resting on the frame rungs. In this position the erector can attach the guardrail braces.
Once guard-rails are secured in position the erector can climb onto the platform and continue
constructing the next level.
Compliances:
The Affix MAST Tower structure and its components have been designed in accordance with
BS1139-6: 2014.
The Affix MAST Series Stair Tower are versatile and user-friendly and safe portable access
solution which is specifically designed for use on commercial and domestic staircases. It has a
compact width of just 0.9 Mtr which enables easy transportation through standard doorways
and stairways. It gives a work platform for use by a maximum of two people, with weight evenly
distributed across the platform. The tower can be easily erected and with highly customizable
assembly it meets almost all the site constraints and provides safe and efficient working
platform. The key safety feature is the smart locking claws provided for the horizontal and
diagonal bracings. It allows an instant lock-up performed by single hand use, however, with the
reverse unlocking plug, two hands are needed to unplug the bracing.
The information and instructions included in this manual are provided to help get the best
possible service from your MAST Series Stair Tower. This user guide provides you with step by
step instructions to ensure your system is assembled easily and safely, using the 3T (Through
the Trapdoor) method.
MAST620_AM-3T_V3.0

USAGE ADVICE
The safe working load of the tower is 600 kgs including its own weight.
The maximum safe working load of any individual platform is 200 kgs
evenly distributed.
RECOMMENDATIONS :
Recommend a minimum of two people to assemble, dismantle and move the platform tower.
Check that all components are on site and in good working order.
Towers must always be climbed from the inside of the assembly using the ladder.
Lifting of components must be done inside the effective base area of the tower.
Moving the tower is strictly NOT PERMISSIBLE. If required, dismantle and reassemble again.
Damaged components or components from other tower systems must never be used.
Stabilizers should always be fitted when specified. Use the stabilizer shown on the component
list according to the tower height.
Outdoor scaffold towers should, wherever possible, be secured to a building or fixed structure.
It is good practice to tie scaffold towers of any height, especially when unattended, or exposed to
windy conditions.
Do Not use boxes or steps to gain additional height.
Do Not lift or suspend an assembled tower.
Beware of horizontal loads which can lead to instability of the tower. The Max. side force is 20kg.
Ensure that the assembly location is checked to prevent hazards during assembly or moving
and while working on the tower. Particular attention should be given to the ground condition,
whether level or sloping, obstructions and wind conditions. The ground condition must be
capable of supporting the tower structure.
03USAGE ADVICE
Maximum Safe Working Loads
MAST620_AM-3T_V3.0

Ensure all brace claws operate and lock correctly prior to erection
Inspect components prior to use
Tower upright and level
Diagonal braces fitted
Stabilizers/outriggers fitted as specified
Platforms located and wind-locks on
Toe boards located
Check that the guardrails are fitted correctly
04USAGE ADVICE
Safety Checklist :Safety Checklist :
Air speed and resultant action to be taken
3T Method Checklist
Beufort Scale
01 mph
12 mph
17 mph
25 mph
40 mph
Calm, smoke rises easily upwards No action needed
Cease work
No action needed, keep a watch
If expected, dismantle the tower
If expected, tie tower to a rigid
structure
Moderate breeze, raises dust
Gale force, cannot even walk
Raises loose papers, leaves and small
twigs move
Strong breeze, tree branches bend, unable
to use umbrella
3
4
5
6
Description Air Speed Action to be taken
MAST620_AM-3T_V3.0

WARNING
NEVER STAND ON AN
UNGUARDED PLATFORM
Safe working load on the working platform is 200kgs evenly distributed.
ASSEMBLY PROCESS :
PREPARATIONPREPARATION
Check the locking triggers in the bracing hooks such that they are working properly.
Sort the braces into horizontal and diagonal braces, the diagonals are slightly longer.
Also note that the braces are differently color coded.
The load on the tower should not exceed 600 kgs.
The recommended platform height is 9M.
SAFE WORKING LOADS AND
HEIGHTS
05USAGE ADVICE
MAST620_AM-3T_V3.0

Insert the Adjustable Jack inside the
bottom of the tubes of the 1st level
walk-through frames
FIRST LEVEL
Step 1
Step 2.2Step 2.2
One person should hold the frame in
upright position during this step.
Hook both the Diagonal Braces to the
1st Rung of both the 1 level 6 rungs
Walk through Frames on both the sides.
Step 2.1Step 2.1
Step 2
Step 1.1Step 1.1
One person should hold the frame
in upright position during this step.
Step 1.2Step 1.2
06ASSEMBLY
MAST620_AM-3T_V3.0

Step 3
Hook both the standard Horizontal Braces
to the 2nd rung towards the upper side,
6-rungs, 1st level walk-through frame
and the other side to the 5th rung
towards the lower side, 6-rungs, 1st
level walk-through frame.
Step 4
Use a spirit level on the horizontal braces
and the frame rungs to check the level.
Adjust the level of the structure by using
the adjustable jack if required.
06ASSEMBLY 07ASSEMBLY
MAST620_AM-3T_V3.0

Step 5
Towards the upper side, insert the
2nd level 3-rungs Span frame into
the spigots of 1st level 6-rungs
walk-through frame.
For clamping instructions refer to the
Clamping Instructions section on Page
17.
Hook the Temporary Trapdoor Platform
to the 6th rung of the walkthrough frame
towards the lower side of the structure
and the 3rd rung of the walkthrough
frame towards the higher side of the
structure.
Step 6
08ASSEMBLY
SECOND LEVELSECOND LEVEL
MAST620_AM-3T_V3.0

Using the 3T method, standing on the
ladder and leaning back against the edge
of the trapdoor aperture
Step 7
Step 8
Step 7.1Step 7.1
Towards the lower side of the structure,
insert the 2nd level 6-rungs Span frame
into the spigots of 1st level 6-rungs
walk-through frame.
For clamping instructions refer to the
Clamping Instructions section on Page 17.
09ASSEMBLY
Step 8.1Step 8.1
Hook one side of the standard Diagonal
brace to the 1st rung of the 1st level
walkthrough-frame towards the upper
side and the other side of the brace to
the 1st rung of the 2nd level span frame
towards the lower side.
Step 8.2Step 8.2
Hook one side of the standard Diagonal
brace to the 4th rung of the 1st level
walk-through frame towards the upper
side and the other side of the brace to the
4th rung of the 1st level walk-through
frame towards the lower side.
MAST620_AM-3T_V3.0

Step 9
Step 9
10ASSEMBLY
Using the 3T method, standing on the ladder
and leaning back against the edge of the
trapdoor aperture:
Using the 3T method, standing on the ladder
and leaning back against the edge of the
trapdoor aperture:
Clamp the 2 Stabilizers on the 2
vertical posts of the frame towards
the lower side of the structure as
instructed in detail on Page no.19.
Step 9.1Step 9.1
Clamp the 2 Stabilizers on the 2
vertical posts of the frame towards
the upper side of the structure as
instructed in detail on Page no.19.
Step 9.2Step 9.2
Step 9.1Step 9.1
Clamp the 2 Stabilizers on the 2 vertical
posts of the frame towards the lower side
of the structure as instructed in detail on
Page no.19.
Step 9.2Step 9.2
Clamp the 2 Stabilizers on the 2 vertical
posts of the frame towards the upper side
of the structure as instructed in detail on
Page no.19.
MAST620_AM-3T_V3.0
Option 1 (wall on sides)
Option 2 (no wall on sides)

Step 10
Step 11
Remove the Temporary Trapdoor Platform
hooked in Step 6.
11ASSEMBLY
Hook the Intermediate Trapdoor Platform
on the 8th Rung of 1st level, 8-rungs
Walk-through frame towards the upper
side and the other side of the platform to
the 4th rung of the 2nd level, 8-rungs
Span frame towards the lower side.
Step 10.1Step 10.1
Hook the standard Horizontal braces pair
to the 7th Rung of 1st level, 8-rungs
walk-through frame towards the upper
side and the other side of the braces to
the 3rd rung of the 2nd level, 8-rungs
Span frame towards the lower side.
Step 10.2Step 10.2
MAST620_AM-3T_V3.0

Step 12
Step 13
Step 13.1Step 13.1
Hook one side of the standard Diagonal
brace to the 3rd rung of the 2nd level
4-rungs span frame towards the upper
side and the other side of the brace to
the 3rd rung of the 2nd level 8-rungs
span frame towards the lower side.
Step 13.2Step 13.2
Hook one side of the standard Diagonal
brace to the 7th rung of the 1st level
8-rungs walk-through frame towards the
upper side and the other side of the brace
to the 7th rung of the 2nd level 8-rungs
span frame towards the lower side.
12ASSEMBLY
Using the 3T method, standing on the ladder
and leaning back against the edge of the
trapdoor aperture:
Hook the lower pair of standard Horizontal
Braces (Mid-Rail) to the 2nd rung of 2nd
level 4-rungs span frame towards the
upper side and the other side of the braces
to the 6th rung of the 2nd level 8-rungs
span frame towards the lower side.
Hook the upper pair of standard Horizontal
Braces (Guard-Rail) to the 4th rung of 2nd
level 4-rungs span frame towards the upper
side and the other side of the Horizontal
Braces to the 8th rung of the 2nd level
8-rungs span frame on the lower side.
Step 12.1Step 12.1
Step 12.2Step 12.2
MAST620_AM-3T_V3.0

Step 14
Step 15
Towards the lower side, insert the 3rd
level 8-rungs span frame into the spigots
of 2nd level span frame.
Step 14.1Step 14.1
Towards the upper side, insert the 3rd
level 8-rungs span frame into the spigots
of 2nd level span frame.
For clamping instructions refer to the
Clamping Instructions section on Page 17.
Step 14.2Step 14.2
13ASSEMBLY
THIRD LEVEL
Step 15.1Step 15.1
Hook one side of the standard Diagonal
brace to the 4th rung of the 2nd level
4-rungs span frame towards the upper
side and the other side of the brace to
the 4th rung of the 3rd level 8-rungs span
frame towards the lower side.
Step 15.2Step 15.2
Hook one side of the standard Diagonal
brace to the 4th rung of the 3rd level
8-rungs span frame towards the upper
side and the other side of the brace to the
8th rung of the 2nd level span frame
towards the lower side.
MAST620_AM-3T_V3.0

Step 16
Step 17
Step 17.1Step 17.1
Hook the lower pair of standard Horizontal
braces (Mid-Rail) to the 6th rung of 3rd
level span frames on both the sides of
the structure.
Step 17.2Step 17.2
Hook the upper pair of standard Horizontal
braces (Guard-Rail) to the 8th rung of 3rd
level span frames on both the sides of the
structure.
14ASSEMBLY
Hook the Working Trapdoor Platform on
the 4th rung of 3rd level span frames on
both the sides of the structure.
Note : Ensure the trap-door is on the same side
as that of the Intermediate Platform.
MAST620_AM-3T_V3.0

Step 18
15ASSEMBLY
Clamp the 4 plastic toe-board holders on
all the 4 corners of the working platform
level, around the working platform.
For more details, refer to Toe-board assembly
details on Page 16.
Step 18.1Step 18.1
Insert the wooden toe-boards in the toe-board
holder slots, on all the 4 sides.
Step 18.2Step 18.2
MAST620_AM-3T_V3.0

Toeboard Assembly Details
Side
ToeBoard
End
ToeBoard
16ASSEMBLY
Fix the claw of the Toeboard TB on the
Rungs facing each other as shown in the
figure.
Then insert the Side Toeboard and the
End Toeboard in the respective toeboard
slots as shown in the figure.
MAST620_AM-3T_V3.0

17ASSEMBLY
Always ensure the Spring Clips are in the lock
position after inserting the upper frame in the
Spigot. To insert, unlock the Spring Clip.
Spring Clip
Spigot
Unlock Position Lock Position
Clamping Instructions
MAST620_AM-3T_V3.0

ST200/300/450/600
Stabilizer
PT200/250
Trapdoor Platform
BD200/250, BH200/250
Diagonal Brace, Horizontal Brace
18COMPONENTS
JA500 FW20900
FM20900
FM10900
BT200/250
ToeBoard Set
MAST620_AM-3T_V3.0

Stabilizers are to be used, when specified, to guarantee
the structural stability of the tower.
Fig. 01Fig. 01
Fig. 01Fig. 01
Option - 01Option - 01
Option - 02Option - 02
Fig. 02Fig. 02
Fig. 02Fig. 02
Lightly tighten the upper clamp of the stabilizer on each corner vertical posts at a height
where the foot is touching the ground. Position the clamp of the lower arm such that the
lower arm is as horizontal as possible.
Fig. 01Fig. 01
Position the stabilizers so that the footpads are approximately equidistant from each
other in pairs of two (opposite sides).
Fig. 02Fig. 02
19STABILIZERS
MAST620_AM-3T_V3.0