USER MUST READ AND UNDERSTAND MANUFACTURER’S INSTRUCTIONS FOR THIS PRODUCT AND
PERSONAL FALL ARREST SYSTEMS. FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH.
This instruction manual meets the manufacturer’s instructions requirements of ANSI Z359.1
The N-621, N-623 cable grabs are only part of a total fall protection system and the use of compatible
hardware and components is mandatory. The system components must meet local, state, federal and
provincial regulations before being incorporated in a personal fall protection system. It is imperative for
the safety and efficiency of operations that this manual be read and fully understood by the worker before
using any fall arrest system. ALL instructions contained herein must be carefully read and strictly followed
for proper use and maintenance of the equipment. Alterations or misuse of this product, or failure to follow
instructions can result in serious injury or death. If you have any concerns or questions, please contact YOKE.
IN AN ENVIRONMENT WHERE A FALL HAZARD EXISTS, SAFETY IS A MATTER OF LIFE OR DEATH FOR WORKERS AND BYSTANDERS.
This instruction manual is intended to meet the “Manufacturer’s Instructions” as required by ANSI and CSA and should be used as part of an employee training program as required by OSHA.
It is neither a regulations compliance guide nor a general training guide for fall arrest, work positioning or travel restraint systems. You must refer to instructions delivered by manufacturers of the pieces of equipment
included in your system. Whenever calculations and specific installations are required, the worker should be professionally trained to that end and should secure relevant information prior to commencing such work.
PRIOR INFORMATION
I. It is the operator’s responsibility, and their employer’s responsibility, if they operate under an employer’s control, to strictly conform to the following
warnings and to the instructions in this manual.
II. It is imperative for safety and efficiency, that this manual be read and fully understood by the operator before using N621, N623, and that all the instructions
contained herein be followed accordingly.
III. This manual should be available at all times to all users. Keep these instructions handy for easy reference whenever required. Extra copies are available from
YOKE.
IV. This fall arrest equipment must be placed under the authority of a competent person being fully aware of the applicable safety regulations for use,
maintenance and control of the equipment.
V.
Equipment associated with the use of N621, N623 (constituting the complete fall arrest system), especially the harness, lanyard, lifeline and connecting
equipment, must comply with applicable safety regulations, either local, state, federal and regional, and be compatible with one another and with N621, N623
cable grabs as described in this manual. YOKE denies liability for any incident due to non-compliance of components not sold or not recommended by YOKE.
VI. The cable to be associated with N621, N623 must comply with requirements of applicable ANSI, OSHA,
CSA standards for fall protection. Fatal hazard may result from using inadequate cable with N621, N623.
TRAINING AND QUALIFICATION
VII. Do not use N621, N623 unless properly trained. A fall could result in serious injury or death.
VIII.
Health condition of the operator must be compatible with a possible fall arrest operation of the system used.
IX. Before operating, a worker should be :
a) mentally and physically fit for the purpose, especially at heights or in confined spaces
b) free from the influence of alcohol or drugs
c) competent for the job to be performed
d) familiar with the equipment and all applicable safety rules, regulations and requirements
e) trained under safe conditions, for working under the above requirements
X. Training must be extended to maintenance and control. It must be carried out under safe
conditions excluding risk of fall. The training of the operator must be extended to a proper
rescue procedure which must be set up in writing under the authority in charge of the
equipment by a competent person or technical consultant.
CONTROL AND MAINTENANCE
XI. The installation of the cable, and the fitting of N621, N623 on it must be carried out under safe
conditions according to the applicable local, state, federal and regional regulations.
XII. The installation of the lifeline must be completed by a competent person to check that the anchorage is adequate, according to the applicable safety
regulations, and that it can safely bear the dynamic loads applied in case of fall arrest.
XIII. Every time the operator is to be connected on to the vertical lifeline, inspect the cable grab and the associated equipment, specifically ensure the lifeline
is in good condition, as explained in this manual. Never operate the equipment if damage is noted. Check that the anchoring of the cable is safe and
adequate for the load and the type of operation, according to applicable regulations.
XIV. The operator must be located in the vertical alignment of the vertical lifeline, in a safe and stable place for getting connected to N621, N623, according to
the applicable safety regulations.
XV. A careful and regular inspection of N621, N623 and of the associated fall arrest equipment is part of the maintenance requirements for safe operation,
especially under site conditions. Keep N621, N623 clean and free from dirt. Check that the cable grab mechanism moves properly and efficiently before
each operating session.
XVI.
YOKE declines any responsibility for the consequences of dismantling or altering N621, N623, beyond description in this manual by anyone who is not
authorized by YOKE. YOKE also declines any responsibility for the consequence of repair having been carried out beyond its control.
XVII. Except for the operations described in this manual, the maintenance of YOKE equipment as well as repair, must be exclusively done by YOKE.
XVIII. Should the responsible authority decide that a fall arrest piece of equipment is no longer suitable for use, take precautions in disposing of it so that it
cannot be re-used.
N-621, N-623 Cable Grab
INSTRUCTIONS AND WARNING INFORMATION
7 X 19 CABLE ONLY
N-621/N623 cable grab shall only be used on 7 x 19
constructed cable of the diameters specified above.
Model Cable Dia. Safety Standard Anti-Inversion
N621
5/16”
ANSI Z359.1
√
(8 mm)
N623 3/8 “
ANSI Z359.1
√
(10 mm)
