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Prior to installation and use of this equipment, record the product identification information from the ID label in the
Inspection and Maintenance Log (Table 2) at the back of this manual.
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Highway Usage Restriction: The Flexiguard™ Counterweight Trailer Fall Arrest System is not approved for on-highway use.
The Flexiguard™ Counterweight Trailer Fall Arrest System is rated for off-road use only. 3M does not supply a trailer title with
the Flexiguard™ Counterweight Trailer Fall Arrest System.
PRODUCT DESCRIPTION:
Figure 1 illustrates the Flexiguard
vehicle towed fall protection system with overhead anchorage connections for two people. It is intended for use as an anchorage
in a Personal Fall Arrest System (PFAS).
Figure 2 illustrates components of the Counterweight Trailer. See Table 1 for Component Specifications. The system is
comprised of two Boom Arms (A) with Anchorage Connection Points (B) mounted on an Adjustable Mast (C) extending from a
Counterweighted Trailer (D). The base of the Adjustable Mast has a Hand Crank Chain Drive (E) to adjust the height of the Mast.
The Counterweighted Trailer is equipped with a Lunette (Pintle) Ring (F) or Ball Coupler for towing behind a vehicle with an SAE
Class 4 Hitch. Leveling Jacks (G) and a Tongue Jack (H) are used with an onboard Slope Indicator (I) to stabilize and level the
system.
System Specifications:
Capacity:
One Self-Retracting Device (SRD) per each Boom Arm Shock Absorbing Anchorage Point.
1 Person per SRD with a combined weight (clothing, tools, etc.) less than or equal to 310 lbs (140 kg).
Tow Vehicle:
The Tow Vehicle and Hitch Receiver must be properly equipped to handle the System Specifications (System Weight, Tongue
Weight, etc.).
Anchorage:
Structure supporting the Counterweight Trailer Fall Arrest System must withstand a 9,100 lb (40.5 kN) vertical load.
Anchor Height:
Adjustable Mast allows for 12.75 ft–20.5 ft (3.88 m–6.25 m) Anchor Height.
Offset:
3.9 ft (1.19 m)
Total System
Approximately 5,500 lb (2,495 kg) with Concrete
Weight:
System Tongue
Approximately 550 lb (250 kg)
Weight
Component Specifications:
Figure 2
Reference
Component
Head Assembly and Boom Arms
A
Anchorage Connection Points
B
Adjustable Mast
C
Counterweighted Trailer
D
Hand Crank Chain Drive
E
F
Lunette (Pintle) Ring or Ball Coupler
G
Leveling Jack
H
Tongue Jack
I
Slope Indicator
1 Anchorage Connection Points: Each Anchorage Connection Point has been tested and verified to a safety factor of 2:1 per OSHA.
Counterweight Trailer Fall Arrest System. The Counterweight Trailer Fall Arrest System is a
™
Table 1 – Specifications
Materials
Steel
Alloy Steel
Aluminum and Steel
Frame - Steel
Drawbar - Steel
Counterweight - 0.75 yds of
4,000 psi Concrete
Crank - Steel
Base - Aluminum
Chain Cover - Steel
Chain - Steel
Gears - Steel
Steel
Steel
Plastic
Note:
Maximum Capacity: 1 person up to 310 lbs
(140 kg) including clothes, tools, etc. per Boom
Arm and Anchorage Connection Point
Dry Trailer Weight: 1,197 lb (542.95 kg)
Dry Tongue Weight: 154 lb (69.85 kg)
Weight with Concrete: 4,097 lb (1,858.37 kg)
Electrical System: 12 Volt
Counterweight: 2,900 lb (1,315.42 kg)
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