Clarke CHT674 Manual de usuario

Thank you for purchasing this CLARKE Torque Wrench.

This torque wrench is designed to tighten nuts with precision. It should NOT be used for

UNDOING nuts as severe damage could occur. With correct use, this torque wrench is

accurate to ±4%. With careful use, the torque wrench will give years of reliable service. If

however, you encounter problems, return the unit to your local CLARKE dealer.

GUARANTEE

This product is guaranteed against faulty manufacture for 12 months from the purchase

date. Keep your receipt as proof of purchase. This guarantee is invalid if the product is found

to have been abused or tampered with in any way, or not used for its intended purpose.

Faulty goods should be returned to their place of purchase, no product can be returned to

us without prior permission. This guarantee does not effect your statutory rights.

Note: DO NOT use knuckle or universal joints, as these could result in inaccurate torque

settings.

TORQUE SETTING ADJUSTMENT

1. Loosen the lock nut on the bottom of the

torque wrench by turning it anti-clockwise.

2. Set the required torque by turning the

knurled handle.

• Read the scale from the centreline adding

on the number on the knurled handle.

3. Finally, tighten lock nut to secure the

setting.

4. To loosely install or remove nuts without the

torque facility, move the ratchet selection

switch to the required side.

Note: The wrench cannot be used to tension

left-handed threads.

TIGHTENING USING THE TORQUE WRENCH

1. Place the square drive on to the socket or extension bar, perpendicular to the nut/bolt

to be tightened.

2. Gripping the knurled handle with one hand, whilst steadying the square drive end with

the other, gently but firmly, pull the handle (i.e. in a clockwise direction) until a click is

heard and a slight ‘break’ in the handle is felt. DO NOT turn any further.

IMPORTANT

• Do not jerk the torque wrench in any way to tighten a nut. Apply an even pressure

throughout the operation.

• Release the wrench immediately the click is heard/felt.

• It should be noted that the ‘click’ from the mechanism becomes weaker with the lower

torque settings.

• Do not turn handle below lowest torque setting.

GC0619-ISS3

1/4” SQUARE DRIVE TORQUE WRENCH

Model No: CHT674 / PART NO: 1801674

Showing

14 Nm

Centreline

Knurled

Handle

CONVERSION FORMULAE

1 kg cm = 13.887oz/in 1 Nm = 141.61 oz/in

1 kg cm = 0.8677 lb/in 1 Nm = 8.8507 lb/ft

1 kgm = 7.233 lb/ft 1 Nm = 0.73756 lb/ft

1 kg cm = 0.098 Nm 1 kgm = 9.80665 Nm

SPECIFICATION

Operating Range 5-25 Nm

Accuracy +/- 4%

Micrometer Increment 0.1 Nm

Drive Shank Size 1/4”

Surface Finish Nickel/Chrome plated

Length 275 mm

Weight 0.6 kg

PARTS & SERVICE:0208 988 7400

E-mail: [email protected] or [email protected]

SALES: UK 01992 565333 or Export 00 44 (0) 01992 565335

Clarke International, Hemnall St, Epping, Essex CM16 4LG

www.clarkeinternational.com

MAINTENANCE

If the torque wrench has not been used for some time, operate it several times to

allow the lubricant to re-coat the internal working parts.

• After use, return the adjustment to the lowest torque setting, i.e. it’s resting

position. This will remove all strain from the mechanism.

• Clean the wrench by wiping. Never immerse it in any type of cleaning fluid.

• The wrench has been calibrated at the factory order to ensure accurate

readings and should not require any re-calibration. If inaccuracy is

suspected, contact your local Clarke dealer.

CONVERSION TABLES

Foot Kilogram Newton Newton Foot Kilogram Kilogram Newton Pounds

Pounds Metres Metres Metres Pounds Metres Metres Metres Feet

(lb.ft) kgm Nm Nm (lb.ft) kgm kgm Nm (lb.ft)

--- --- ---- 5 3.69 0.51 0.5 4.90 3.61

5 0.69 6.78 10 7.38 1.02 1 9.81 7.23

10 1.38 13.56 20 14.75 2.04 2 19.61 14.47

15 2.07 20.34 30 22.13 3.06 3 29.42 21.70

20 2.76 27.12 40 29.50 4.08 4 39.23 28.93

25 3.46 33.90 50 36.88 5.10 5 49.04 36.17

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