3M Occupational Health and Environmental Safety
Fall Protection Equipment
Fall Arresters
User Instructions
TM
User Instructions for 3M Fall Arresters.
Important: Keep these User Instructions for reference.
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Installation
Identify a suitable location for the vertical lifeline anchorage connection. Anchorages must be capable of meeting the
strength requirements of OSHA 29 CFR 1919.66 and 1926.502. Connect anchorage connector of vertical lifeline to approved
anchorage. The vertical lifeline must be installed as vertically as possible over the intended work area to reduce the possibility
of dangerous swing falls.
Caution: Installer may be exposed to a fall hazard during installation. Alternate safety equipment may be required during
installation.
For Part Numbers 123, 124, 129
Ensure the vertical lifeline hangs freely from anchorage without twists or knots in the lifeline. With arrow on the body of
the Fall Arrester pointing up, pull security latch handle up to release the rope chamber. Unscrew thumbscrew knob until the
chamber opens. Insert vertical lifeline rope into the chamber. The arrow on the body of the Fall Arrester MUST point upwards
towards the vertical lifeline anchor point. Position back half of chamber around rope and close. Screw thumbscrew into the
receiving nut until thumbscrew is tight. Secure the chamber by grasping the small knob on the security latch moving it into
position in the notch. Compress the Fall Arrester upwards to position on rope. Attach approved compatible personal energy
absorber or energy absorbing lanyard to the eye of the Fall Arrester.
For Part Number 128
Remove carabiner from 128. Support body of 128 and lift handle to open cams. Holding in the open position, rotate 128 90°
and slide the slot over the M400 cable. Rotate back to vertical with cable laying in grooves of the 128. The arrow on the 128
MUST be pointed upward. Release the cam handle to close cam against the cable. Insert carabiner into hole at the bottom
of the handle to secure the 128 onto the cable. Connect carabiner to front D-ring of full body harness. Do not add additional
connectors to extend the distance between the 128 and the front D-ring.
Inspection
All Fall Arresters must be inspected prior to each use, and additionally a “competent person” (other than the user), as defined
by OSHA, at least annually.
All rope must be inspected for tears, cuts, fraying, abrasion, discoloration, burns, holes, mold, or other signs of wear and
damage.
Orientation lockout on the 128 must be functioning properly.
Cable must be inspected for kinks, broken strands, corrosion, abrasion, or other signs of wear and damage. Swaged
terminations should be secure with the thimble tight, and not visibly damaged.
Any equipment that has been subjected to the forces of a fall must be removed from service.
All Fall Arresters must be free of corrosion, chemical attack, alteration, excessive heating or wear.
All markings must be legible and attached to the product.
If inspection reveals any defect, inadequate maintenance, or unsafe condition, remove from service and destroy.
Note: Only manufacturer, or entities authorized in writing by the manufacturer, may make repairs to the product.
Cleaning and Maintenance
Fall Arresters can be wiped down with a dry cloth to remove dirt and grease. No maintenance is required for this product. If
inspection reveals any defect, remove from service.
Part Number
Material
Lifeline Size
Connector Size
2 in. (53mm)
Capacity
Weight
Standard
123
124
129
128
Steel
Steel
5/8 in. (16mm) Rope
5/8 in. (16mm) Rope
5/8 in. (16mm) Rope
400 lbs. (181kg)
400 lbs. (181kg)
400 lbs. (181kg)
310 lbs. (140kg)
1.1 lbs. (505g)
1.1 lbs. (524g)
1.1 lbs. (505g)
1.5 lbs. (684g)
ANSI Z359.1-07
ANSI Z359.1-07
ANSI Z359.1-07
ANSI Z359.1-07
0.88 in. (23 mm)
2.1 in. (54 mm)
0.78 in. (20mm)
303 & 304 Stainless Steel
Stainless Steel and Brass 3/8 in. (10mm) Cable
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Product Label
Product Marking
Product Label
Use 5/8” (16mm)
synthetic lifeline rope only Read,
understand and follow all instructions
Meets ANSI Z359.1 Cap.; 400 lbs
Product Warranty, Limited Remedy, and
Limitation of Liability
WARRANTY: THE FOLLOWING IS MADE IN LIEU OF ALL WARRANTIES OR CONDITIONS, EXPRESS OR
IMPLIED, INCLUDING THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE. Equipment offered by 3M is warranted against factory defects in workmanship and materials for
a period of one year from date of installation or first use by the original owner.
LIMITED REMEDY: Upon notice in writing, 3M will promptly repair or replace all defective items. 3M reserves the right to
elect to have defective item returned to its plant for inspection before making a repair or replacement. Warranty does not cover
equipment damage resulting from wear, abuse, damage in transit, or other damage beyond the control of 3M. 3M shall be the
sole judge of product condition and warranty options. This warranty applies only to original purchaser and is the only warranty
applicable to our products. A Return Goods Authorization Number (RGA) must be issued by 3M on all returns for warranty
consideration. All returns must be shipped to 3M freight prepaid. Please contact 3M customer service department at
1-800-560-1094 for warranty assistance.
LIMITATION OF LIABILITY: In no event will 3M be liable for any indirect, incidental, special or consequential damages
including, but not limited to loss of profits, in any way related to the products regardless of the legal theory asserted.
3M Occupational Health &
Environmental Safety Division
4551 Raceway Drive SW
Concord, NC 28027
USA
Please recycle. Printed in USA.
© 2010
Phone 1-800-560-1094
Fax 1-800-560-1275
3M is a trademark of 3M Company,
used under license in Canada.
All rights reserved.
IM-0044 Rev B 12-2010
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