Modulift MOD CLS User manual
User Instructions
MOD CLS
The MOD CLS is an adjustable lifting beam / spreader beam, consisting of a beam section and beam
clamps that lock onto the ange of the beam section. The MOD CLS can be readjusted to achieve the exact
required spans of any lifting conguration by simply altering the quantity and position of the clamps.
Fig. 1 – Typical MOD CLS Beam Semi-spreader conguration (2 top lugs)
Fig. 2 – Typical MOD CLS Beam
Lifting Beam conguration
(1 top lug)
Fig. 3 – Typical Clamp and Safety Stop Assembly
P2
P1 P3
P5
P6
P7
P8
(iii)(ii)(i)
P4
P2P4
P7
P1P3P5
P7
B - Bottom Clamp Span
P6
P2
P6
P4 P1 P7P6
P7 P6
A - Top Clamp Span
B - Bottom Clamp Span
19.7"19.7"
P3
P5
Part
Ref. Description Weight
/item
P1 Beam
Section 19lbs/ft
P2 6.5t Lifting
Beam Clamp 40lbs
P3 4.75t Lifting
Beam Clamp 29lbs
P4 6.5t Shackle 4lbs
P5 4.75t Shackle 3lbs
P6 Safety Stop 3lbs
P7
Safety Stopper
M10 Bolts,
Nuts & Washers
Table 1 –
Component List
Part Ref. Description Qty/Clamp
P1 Shackle 1
P2 Lug Plate 1
P3 M Plate 2
P4 Collar Plate 2
P5 Pivot Bar 1
P6 Locking Bolt 1
P7 Safety Stop 1
P8 Safety Stop Bolt,
Nut and Washers 1
Table 2 – Clamp and
Safety Stop Component List
MOD CLS Specication
The MOD CLS is rated at 8.5 metric tons WLL at 10ft span (spreader arrangement).
See Load Tables for WLL at other congurations.
‘Base to Sling Angle’, α, 60 degrees minimum.
The top Lifting Beam Clamp is rated at 6.5 metric tons WLL (vertical) and
4.4 metric tons WLL (60° BSA).
The bottom Lifting Beam Clamp is rated at 4.75 metric tons WLL (vertical).
Important: P7, red safety stop is shown in three arrangements (i),
(ii) & (iii) depending on clamp position and lifting beam hole location.
Only use arrangement (iii) if (i) or (ii) are not possible. For arrangement
(iii) always t to side of potential movement.
α α
α= Base to sling angle
User Instructions
Should you nd your equipment is no longer of use,
please dispose of in a responsible manner. Please
contact Modulift if you need further guidance
© Copyright 2017 Modulift.
All rights reserved.
MOD CLS
MOD CLS US JULY 2017
Assembly Procedure
Each lifting beam clamp will be supplied fully assembled.
Individual clamps are not to be dismantled.
Remove stopper bolts and push each lifting beam clamp
through the open-end section of the beam, ensuring that
the lug plate is orientated the correct way as shown in Fig. 4
Replace stopper bolts and nuts on top and bottom anges
at each end of the beam. Tighten to a torque of 30 lbf.ft
For additional safety, always ensure the red locking bolt
on each clamp is tightened to a torque of 30 lbf.ft and the
clamp is secure, once in the correct position on the beam
for your desired lifting conguration.
Always t at least one red safety stop to each clamp (see Fig.
3). Tighten bolt to a torque of 30 lbf.ft before lifting. For ease
of visibility, t all red safety stops to one side of the beam
Always ensure the 6.5t Lifting Beam Clamps are tted to
the top of the beam and the 4.75t Lifting Beam Clamps are
tted to the bottom of the beam.
If in any doubt please contact Modulift.
Do’s & Don’ts
Always have the safety stopper bolts or studs tightened with
nuts on both top and bottom anges and at both ends of the
beam before commencing any lifts.
Do not hang any loads directly from the beam section, always
lift from shackles on the beam clamps.
Do ensure that the clamp lug plate is always being pulled
towards the body of the clamp, never away from the body of
the clamp (see Fig. 4 and Fig. 5).
Do ensure the red locking bolt on each clamp is tightened
to a torque of 30 lbf.ft prior to any lift.
Do ensure at least one red safety stop is tted to each clamp
(see Fig. 3). For arrangement (iii) Fig.3, always check red
safety stop is attached to the nearest beam hole to the clamp.
Tighten bolt to a torque of 30 lbf.ft prior to any lift. For ease of
visibility, t all red safety stops to one side of the beam
Do ensure that the lift is stable. Never carry out unstable lifts.
Do ensure that the load and the beam (either loaded
or unloaded) both lift level by positioning the bottom
clamps in the correct location (depending on clamp lug plate
orientation, a maximum of 6 degrees of tilt is permitted).
Never stand beneath the suspended load or lifting beam
(either loaded or unloaded).
Do ensure that the beam ange and the clamps are free of
grease or excessive water where they clamp together.
Check that there is no
deformation or distortion
on the clamps before any
lift. In case of deformation or distortion,
the relevant part must be discarded and
replaced. Always check and ensure
that the arms of the collar plates are
parallel and not deformed (refer to Fig. 6).
Check collar
plate arms are
parallel and
not deformed
Fig. 6 – Collar plate
WARNING!
Personnel using this system should be suitably trained,
competent and have a clear understanding of Safe
Slinging procedures.
The use of Modulift equipment must be in accordance with
the procedures laid down in ‘ASME B30.20 – 2013’.
Never exceed stated beam WLL (adhere to Table 3 WLL for
conguration used) or clamps WLL (see MOD CLS specication).
The top sling length is critical to the safe use of the beam
when used on the semi-spreader conguration. Do not
have less than 60° BSA sling angles.
Ensure that clamp lug plates are always being pulled
towards the body of the clamp (as shown in Fig. 4), never
away from the body of the clamp (as shown in Fig. 5).
Always ensure the red locking bolt on each clamp is
tightened to a torque of 30 lbf.ft before lifting.
Always t at least one red safety stop to each clamp (see Fig.
3). Tighten bolt to a torque of 30 lbf.ft before lifting. For ease
of visibility, t all red safety stops to one side of the beam.
Ensure that the beam is lifting level whenever possible.
Never allow the beam to tilt more than 6 degrees from
the horizontal plane (Please refer to LEEA COPSULE). In
case of tilt, ensure that the clamp lug plates are orientated
so that the tilt angle pulls the clamp lug plate towards the
body of the clamp, never away from the body of the clamp.
Always ensure that the lift is stable. Please note that for a
lifting beam conguration the height increment between
beam pivoting points shall not exceed 19.7", as shown in
Fig. 2 (1 top lug). If in any doubt please contact Modulift.
Table 3 – WLL v Span (in metric tons)
Semi-Spreader conguration (2 top lugs, Fig. 1)
Lifting Beam conguration (1 top lug, Fig. 2)
WLL (t) A – Top Clamp Span (ft)
<1½ 3 6½ 10 13 16 19½
B – Bottom Span (ft)
<1½ 8.5 8 7 3.5 2 1.25 0.8
38 8.5 8 4.5 2.5 1.5 0.9
6½ 7.5 8 8.5 7 3.25 1.75 1
10 4.25 5.5 8 8.5 5.25 2.5 1.25
13 2.25 3 4.5 8 8 4 1.75
16 1.25 1.75 2.25 3.75 7 7.5 2.5
19½ 0.9 1 1.25 2 2.75 4.25 5.25
If your exact spans are not noted in the table, then please round the
spans up or down to the values that will give you the lowest SWL.
Contact Modulift if you need a specic WLL value for a specic span or
arrangement not covered on the tables above.
B – Bottom Span (ft) ≤ 6½ ≤ 10 ≤ 13 ≤ 16 ≤ 19½
WLL (in metric tons) 6.2 3.75 2.25 1.25 0.8
Fig. 4 – Correct orientation
of lug plates
Fig. 5 – Incorrect orientation
of lug plates
60°
Minimum
User Instructions
Should you nd your equipment is no longer of use,
please dispose of in a responsible manner. Please
contact Modulift if you need further guidance
© Copyright 2017 Modulift.
All rights reserved.
MOD CLS
WARNING!
Never exceed the top or bottom clamp WLL
(see MOD CLS Specication).
Always remember to consider the weight of the lifting
beam when checking the complete lifting arrangement.
For loads with an oset CoG, the clamp closest to the CoG
will have the highest loading. Remember the loading on
each clamp will not be equally distributed.
Your lifting beam conguration will always depend on the
number of lifting points required, as well as the stability and
CoG position of the load.
For indeterminate lifts (i.e. more than 2 bottom lifting
clamps), always allow for the worst possible unequal load
distribution on each clamp.
The MOD CLS is designed for a specic purpose and must
not be used outside the limits stated within this document.
The MOD CLS beam clamps must not be used in combination
with any other unauthorised equipment, either as individual
components or as part of a third-party system.
If your lifting conguration is not shown in the below
examples, or if you are in any doubt, please contact Modulift.
More than 2 bottom clamps
It is possible to use more than 2 bottom clamps underneath the
beam for lifting loads with multiple lifting points. Please also
note that for indeterminate lifts, it is much more likely for the
load to be unequally distributed between each bottom clamp.
If the load is not equally distributed between each bottom
clamp, always ensure the unequal loading does not exceed
each bottom clamp WLL. Also ensure that the total load does
not exceed the two top clamps WLL and beam WLL (as shown
in Table 3). Always t at least one red safety stop to each
clamp and tighten bolt to a torque of 30 lbf.ft prior to any lift.
Using Table 3 for more than 2 bottom clamps (i.e. for lifting
arrangements equivalent to Fig. 7a and Fig. 7b below), the
worst-case load regarding the bottom span B shall be used
when checking the beam SWL value. Red safety stops are
shown in three possible arrangements, depending on clamp
position and lifting beam hole location.
Load oset CoG vs tilt
In order to prevent tilt for lifting congurations with an oset
CoG, the CoG of the load must sit vertically under the crane
hook. For the beam not to tilt when lifted unloaded, the centre
of the beam needs to sit vertically under the crane hook. To
avoid the load and the beam (either loaded or unloaded) from
tilting, always ensure the top lugs are equally spaced from the
centre of the beam. Adjust the location of the bottom clamps
so that both the CoG of the load and the CoG of the beam sits
vertically under the hook (as shown in Fig. 8 and Fig. 9 below).
Please note for a lifting beam conguration (Fig. 8 single top
lug), if it is not possible to t a red safety stop between the top
clamp collar plates (as shown), t two red safety stops to the
nearest beam hole on either side of the top clamp.
The following two pages are intended
to provide clear instruction for correct
usage of the MOD CLS in other common
lifting scenarios. If your lifting conguration
is not shown, or if you are in any doubt,
contact Modulift for further assistance
For oset CoG loads, the clamp closest to the CoG will be
loaded higher. As loads on the clamps will not be equally
distributed, always ensure the unequal loading does not
exceed each bottom clamp WLL.
Note: If the Beam section is not long enough and the bottom
clamps cannot be moved further to accommodate the CoG
oset, then to accommodate the oset CoG of the load –
please adjust the top clamp position. Always ensure that
all lug plates are being pulled vertically or towards the
body of the clamp (loaded or unloaded) as shown in Fig.10a.
Increasing the height of the top slings will reduce the tilt.
Never allow the beam to tilt more than 6 degrees from
the horizontal plane.
MOD CLS
MOD CLS US JULY 2017
Fig. 8 – Lifting beam
(single top lug) and
load with oset CoG
Fig. 9: Semi-Spreader
(two top lugs) and
load with oset CoG
B1
B2
Fig. 7b – Using B1
and B2the lowest
SWL shall be applied
B1
B2= 0
Fig. 7a – Using B1and B2
the lowest SWL shall
be applied
User Instructions
MOD CLS MOD CLS
Lift stability
When choosing the lifting arrangement, the sling and clamp positions must always be considered as these may also have an eect
on the stability of the lift. Please refer to Fig. 11, Fig. 12a and Fig. 12b to check your lift is stable in each horizontal axis of rotation.
When the CoG of the load is above the load’s connection points (shown in Fig.12a and Fig.12b) the load must be supported in
more than one vertical plane. Please note that although only one plane is illustrated above, a stability check is required for
each horizontal axis of rotation.
Orientation of lug plates
If you intend to lift with a tilt of up to 6 degrees from the horizontal
plane, please ensure the clamp lug plates are orientated as shown in
Fig. 10a. Always ensure that all clamp lug plates are being pulled to-
wards the body of the clamp. All red safety stops should be attached
as shown below, or as described in Fig. 3. If you require more safety
stops, or if you are in any doubt, please contact Modulift.
For Fig.12a and Fig.12b a stable lift will exist on the illustrated
plane if D>E. An unstable lift will exist on the illustrated plane
if E>D. Never carry out unstable lifts. Stability in other plane
(not shown) depends on bottom sling rigging arrangement.
Please check each horizontal axis of rotation.
Wrong Fig.10a – Correct orientation of lug plates
6° Max.
Horizontal Plane
Right
Wrong Wrong
Fig.10b – Incorrect orientation of lug plates
Fig.11 – Lift is stable when CoG of load
is below the load lifting points
D
19.7"
E
Fig.12a – Single top clamp
19.7"D
E
UNSTABLE WHEN E>D
NEVER CARRY OUT UNSTABLE LIFTS
Fig.12b –
Two top clamps
D
E
UNSTABLE WHEN E>D
NEVER CARRY OUT UNSTABLE LIFTS
Right Right
