Yoke N-621, Инструкции и информация о предупреждениях

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TABLE OF CONTENTS
1. Description ....................................................................... 1
2. Capacity ............................................................................ 1
3. Minimum Fall Clearance ................................................... 1
4. Anchorage Strength ......................................................... 1
5. Connectors ....................................................................... 1
6. Inspection and Maintenance ............................................ 1
6.1 Before Each Use ......................................................... 1
6.2 Annual Inspection ....................................................... 2
6.3 Maintenance ............................................................... 2
7. Installation and Use .......................................................... 2
8. Environmental Hazards ..................................................... 3
9. After a Fall ......................................................................... 3
10. Rescue ............................................................................. 3
11. Manufacturer ................................................................... 3
WARNING
These instructions must be provided to the user of the cable grab. It is the responsibility of the user to read and understand these instructions
before using this equipment. Failure to do so could result in serious injury or death. Certified fall protection and product training is required
before using this equipment and maybe also required by local Occupational Health and Safety.
1. DESCRIPTION
This manual applies to the following Cable Grabs
MODEL DESCRIPTION
N-621 Cable Grab for 5/16” (8mm) cable
N-623 Cable Grab for 3/8” (10mm) cable
These fall arresters are for use as part of a complete fall arrest system that must also include a CSA and/or ANSI approved full body harness,
and other personal protective equipment.
APPLICATIONS
The N-621, N-623 are designed to protect a worker in the event of a fall while climbing FIXED LADDERS OR SIMILAR CLIMBING
STRUCTURES
The N-621, N-623 cable grabs must only be used on a vertical cable system. Do not use the N621, N623 on cable that is angled
or on horizontal cable systems since the N-621, N-623 may not function properly and may fail to lock.
The N-621, N-623 are not designed for material handling applications
DO NOT USE CONNECTION DEVICES TO N621, N623 OTHER THAN N250G CARABINER.
DO NOT ATTACH ADDITIIONAL CONNECTORS OR LANYARDS BETWEEN THE USER AND THE N621, N623
NOTE: N621, N623 are designed for use with maximum connection length between carrier cable and attachment point of 9” (225mm) as per
ANSI A14.3, CSA Z259.2.5 and OSHA 1926.1053
WARNING:
Alteration or misuse of these cable grabs is forbidden and may result in serious injury or death. If you have any questions on the operation,
maintenance, or suitability of these cable grabs for your application, contact YOKE for further instructions
2. CAPACITY
Each Fall Arrestor is limited to one person only with a maximum total combined weight of 310 lbs including tools and equipment.
3. MINIMUM FALL CLEARANCE
A minimum fall clearance of 7 ft. (2m) is required between the user’s feet and surface below. The user may not be protected against hitting
the ground or landing during the first 7 ft. (2m) of ascent or last 7 ft. (2m) of descent. Use proper climbing procedures (e.g., maintain 3
points of contact with hands and feet) when ascending or descending any portion of the ladder.
4. ANCHORAGE
4.1 Strength
Each Fall Arrestor must be connected to the applicable vertical cable lifeline that is anchored to a suitable structure capable of resisting
a static load of 5000 lbs (22.2 kN). If more than one vertical lifeline is anchored to the structure, the structure must be capable of
resisting static loads equal to the above values multiplied by the number of vertical lifelines attached to it.
• Always check for obstructions below the work area to make sure that the potential fall path is clear.
• Always work directly under the anchorage point to avoid a swing fall injury
5. CONNECTORS
Use only Yoke N-250G carabiner as attachment between sternal d-ring on user’s harness and N-621, N-623. It is further recommended that
only CSA Z259.12 and/or ANSI Z359.12 approved connectors be used in the fall arrest system. Connectors must be compatible with the
vertical lifeline, the anchorage, or anchorage connector in terms of size, shape, and strength. Non-compatible connectors may unintentionally
disengage (roll-out).
6. INSPECTION AND MAINTENANCE
6.1 Before Each Use
The user of the N-621, N-623 must visually inspect the entire cable grab for any obvious signs of damage, deterioration or distress.
• Open unit and inspect all components. All components must be free of dirt or debris.
• Check components for damage or wear that may affect the free movement and/or operation of the mechanism. If in doubt of
condition, do not use. Units with signs of any damage should be removed from service and properly discarded.
• Inspect for signs of wear, distortion, bends, cracks on all components of N-621, N-623 especially connection point, brake lever and
cable shoes. If inspection reveals an unsafe condition, immediately remove unit from service and mark for destruction.
• Inspect gripping mechanism for proper operation by pivoting ring and gripper back and forth. Movement should be free and easy
without binding. The spring resistance should be noticeable.
• The anti-inversion washer should move freely in the attachment point slot. Turn N-621, N-623 upside down and attempt to install the
N250G into the attachment point. The anti-inversion washer should prevent installation of the N250G carabiner. If the anti-inversion
washer is not functioning properly and allows for installation of N250G when unit is upside down, immediately remove N621, N623
from service and mark for destruction.
• The locking lever should have noticeable spring resistance to open and should easily spring back into the closed position.
• Inspect the N250G carabiner for damage. Ensure that the gate opens and closes freely. Ensure that gate fully closes and locks.
• Do not attempt to alter or repair the N-621, N-623.
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