Harken Industrial CMC CLUTCH, User Manual

CLUTCH 

USER MANUAL

21

EN

1.  TRACEABILITY & 

MARKINGS

See section 1.

2.  FIELD OF 

APPLICATION

These instructions explain the correct use of your 

equipment. Only certain techniques and uses are 

described. The warning symbols inform you of 

some potential dangers related to the use of your 

equipment, but it is impossible to describe them 

all. Check cmcpro.com for updates and additional 

information. You are responsible for heeding each 

warning and using your equipment correctly. Any 

misuse of this equipment will create additional 

dangers. Contact CMC if you have any questions or 

difficultyunderstandingtheseinstructions.

Standards

Descent Control Device, Belay Device, Pulley per 

NFPA 1983 (2017 ED) 

Descent Control Device per ANSI/ASSE Z359.4 

- 2013

Responsibility

Before using this device, you must:

•  Read and understand these user instructions 

and warnings.

• 

Getspecifictraininginitsproperuse.

•  Familiarize yourself with its capabilities and 

limitations.

•  Understand and accept the risks involved.

•  Have a rescue plan in place to deal with any 

emergencies that could arise during use of 

the device.

• 

Bemedicallyfitforactivitiesatheight.Becapable

to control your own security and any possible 

emergency situations.

Specifictrainingintheactivitiesdefinedinthefield

of application is essential before use. This device 

must only be used by competent and responsible 

persons, or those placed under the direct and visual 

control of a competent and responsible person. 

Gaining an adequate expertise in appropriate 

techniques and methods of protection is your own 

responsibility. You personally assume all risks and 

responsibilities for all damage, injury or death, 

which may occur during or following incorrect use 

of this device in any manner whatsoever. If you 

are not able, or not in a position to assume this 

responsibility or to take this risk, do not use this 

equipment.
This device must not be loaded beyond its strength 

rating, nor be used for any purpose other than that 

for which it is designed.
This equipment does not need to be a personal 

issue item.

WARNING: Activities involving the use 

of this device are inherently dangerous. 

You are responsible for your own actions, 

decisions and safety.
WARNING: Inert suspension in a harness 

can result in serious injury or death.

3.  NOMENCLATURE

1.  Moving Side Plate

2.  Side Plate Release Latch

3.  Tension Rope Guide

4.  Sheave

5.  Sheave Swing Arm

6.  Friction Shoe

7.  Becket

8.  Control Handle

9.  Chassis

10.  Attachment Eye

11.  Side Plate Lockout Screw Hole

12.  Side Plate Lockout Screw

13.  Handle Positions

A.  Stop

B.  Standby

C.  Release (Range)

D.  Antipanic

14.  Rope Path

A.  Tension Side (Load/Anchor)

B.  Braking Side

C.  Brake Hand 

4.  INSPECTION 

POINTS TO VERIFY

Inspection Points to Verify

The CLUTCH is controlled through CMC’s ISO 

9001 approved quality processes, however it should 

be thoroughly inspected before being placed in 

service. The CLUTCH is also a robust product but 

should still be inspected after each use to ensure 

that damage did not occur. The CLUTCH does not 

have a known time-limit to the usable life, however 

CMC recommends a detailed inspection by a 

competent person at least once every 12 months 

(depending on current regulations in your country, 

and your conditions of use). Record the date of the 

inspection and the results in the equipment log or 

on inspection forms that can be found on cmcpro.

com/ppe-inspection/.

Before Each Use

•  Perform a function test of the device by loading 

it properly on the rope and ensuring that it 

holds a test load without slipping on the rope as 

described in Section 8 of this Manual.

•  Verify the presence and legibility of the product 

markings.

•  Verify that the device has no cracks, deformation, 

excessive wear, corrosion, etc.

•  Check for the presence of dirt or foreign objects 

thatcanaffectorpreventnormaloperation(e.g.

grit, sand, pebbles, etc.).

•  Move the Control Handle through its range 

of motion.

•  Move the Control Handle to the Standby 

position and check that the Sheave Swing Arm 

moves freely.

•  Check that the Sheave is in good condition and 

freely rotates only anti-clockwise.

•  Check the Sheave for wear; when the wear indi-

cators are no longer visible, the holding capacity 

of the device may be compromised. Refer to the 

following page for details on the wear indicators. 

Take extra precaution and consider retirement 

of the device.

•  Check the Side Plate for deformation or 

excessive play; if the Side Plate can pass over 

the Chassis (see diagram), discontinue use of 

the CLUTCH.

During Each Use 

Make sure that all pieces of equipment in the 

system are correctly positioned with respect to each 

other. Regularly monitor the condition of the device 

and its connections to other equipment in the 

system. Do not allow anything to interfere with the 

operation of the device or its components (Sheave, 

Control Handle, etc.). Keep foreign objects out of 

the device. To reduce the risk of a free fall keep 

all slack out of the rope between the device and 

the load/anchor.

WARNING: performance can vary depend

-

ing on the state of the rope (wear, mud, 

moisture, ice, etc).

Retirement

This equipment has an unlimited lifetime, how-

ever usage and exceptional events may require 

retirement. Destroy retired equipment to prevent 

further use. 
A device must be retired when: 

•  It has been subjected to a major fall (or load).

•  It fails to pass inspection. 

•  It fails to hold a load without slipping on the rope.

•  You have any doubt as to its condition or 

reliability.

•  You do not know its full usage history.

•  When it becomes obsolete due to changes in leg-

islation, standards, technique or incompatibility 

with other equipment, etc. 

WARNING: An exceptional event can lead 

you to retire a device after only one use, 

depending on the type and intensity of 

usage and the environment of usage (harsh 

environments, marine environment, sharp 

edges, extreme temperatures, chemical 

products, etc.)
Carrying, Maintenance, Storage & 

Transport 

Clean and dry this equipment after each use to 

remove any dust, debris and moisture. Use clean 

watertowashoffanydirtordebris.Donotusea

pressure washer to clean the device. If device gets 

wet, allow the device to air dry at temperatures 

between 10° C (50° F) and 30° C (86° F), keep 

away from direct heat. During use, carrying, storage 

and transport, keep the equipment away from acids, 

alkalis, rust and strong chemicals. Do not expose 

theequipmenttoflameorhightemperatures.Store

in a cool, dry location. Do not store where the 

equipment may be exposed to moist air, particularly 

where dissimilar metals are stored together. Ensure 

that the equipment is protected from external impact 

and keep out of direct sunlight.

Repairs

All repair work shall be performed by the manu-

facturer.Allotherworkormodificationsvoidthe

warranty and releases CMC from all liability and 

responsibility as the manufacturer.

5.  COMPATIBILITY

Verification

Verify that this device is compatible with the other 

elements of the system in your application (compat-

ible = good functional interaction).

WARNING: Danger may arise and function

-

ality may be compromised by combining 

other items of equipment in conjunction 

with the CLUTCH during use. The user as

-

sumes all responsibility for any non-stan

-

dard use of the device or the components 

being used with the device.

NFPA 1983 (2017 ED) “GENERAL USE” 

Descent Control Device / Belay Device 

/ Pulley

•  CMC™ Static-Pro LifeLine 12.5 mm P/N 28120X 

General Use Life Safety Rope

•  Teufelberger KM III 13 mm P/N K0X160 General 

Use Life Safety Rope

ANSI/ASSE Z359.4-2013 Descent Control 

Device

•  Teufelberger KM III 13 mm P/N K0X160 60-

141kg MAX 200m

Ropes

Use only the recommended diameters and types of 

synthetic rope. The use of any other diameter/type 

of rope changes the performance of the device, 

especiallythebrakingeffectiveness.

WARNING: The stated diameter of ropes on 

the market may have a tolerance of up to 

+/- 0.2 mm. Certain ropes may be slippery: 

new ropes, small diameter ropes, wet or 

frozen ropes. Braking effectiveness and 

ease of giving slack can vary depending on 

the diameter, construction, wear and tear, 

and surface treatment of the rope, as well 

as other variables such as frozen, muddy, 

wet, dirty ropes, etc. At each use, the user 

must familiarize him or herself with the 

braking effect of the device on the rope and 

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MANUAL TEXT