Bedienungsanleitung Workzone IW36 (Seite 12 von 18) (Englisch)

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AFTER SALES SUPPORTe-mail: help@powertoolsupport.com

1800 909 909 (toll free)MODEL No.: IW36 • 61551 • 07/2018

AFTER SALES SUPPORTe-mail: help@powertoolsupport.com

1800 909 909 (toll free)MODEL No.: IW36 • 61551 • 07/2018

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Driving with variable speed

The technique is to start slowly, increasing the speed as the screw runs

down. Set the screw snugly by slowing to a stop, or allowing the impacts

to set the screw to the desired torque over a period of impact time. Prior

to driving screws, pilot and clearance holes should be drilled. Always hold

the machine straight on the bolt to be tightened.

The best method to determine the right impacting/tightening duration

is by means of a trial. For small screws, the right impacting/tightening

duration can be reached in less then 0.5 Sec. Therefore, work with low RPM

and switch the machine o immediately when the screw is tight and the

impacting sound can be heard.

For screwing larger, longer wood screws into hard material, pre-drilling is

the best method.

Tightening torque

The tightening torque depends on the duration of the impacting/

tightening action. The largest tightening torque is achieved after approx. 6

to 10 Sec. impacting/tightening action. Over tightening or the use of poor

quality fasteners can result in the fastener shearing.

The torque build-up depends on the following factors:

• Hardness of the bolts/nuts.

• Type of washer (disk washer, spring washer, seal).

• Hardness of the material to be joined.

• Lubricating eect at the surfaces of the junction.

This leads to the following application cases:

Hard case: The joining of metal to metal with a disk washer. The maximum

torque is reached after a relatively short impacting/tightening action.

Medium case: The joining of metal to metal where spring ring washer,

disk spring washer, stud bolts or bolts/nuts with conical seats are used.

Soft case: The joining of e.g. metal to wood or insulation material.

For middle or soft joining cases, the maximum tightening torque is less

as for hard cases. Therefore, a longer impacting/tightening action is

necessary to arrive at the maximum tightening torque.

Fastening with screws

This procedure will enable you to fasten materials together with your tool

without stripping, splitting or separating the material.

1. Clamp the pieces together and drill the rst hole 2/3 the diameter of

the screw. If the material is soft, drill only 2/3 the proper length. If it is

hard, drill the entire length.

2. Unclamp the pieces and drill the second hole the same diameter as the

screw shank in the rst or top piece of wood.

3. If at head screw is used, countersink the hole to make the screw ush

with the surface. Then, simply apply even pressure when driving the

screw. The screw shank clearance hole in the rst piece allows the screw

head to pull the pieces tightly together.

Running nuts and bolts

NOTE: When tightening a nut or a bolt always start the fastener by hand

by 2 or 3 threads BEFORE using the impact wrench.

NOTE: The longer the impact wrench is operated in the hammer function,

the tighter the fastener will become. 1 –2 seconds is normally sucient

with small nuts, and bolts even less time.

Variable speed control must be used with caution for driving nuts and

bolts with socket set attachments. The technique is to start slowly,

increasing speed as the nut or bolt runs down. Set the nut or bolt snugly

by allowing the impacts to tighten the fastener over a period of time. ie

the longer the impacts, the tighter the fastener.

NOTE: Hold the impact driver rmly.

NOTE: When tightening a nut or a bolt always start the fastener by hand

by 2 or 3 threads BEFORE using the impact wrench.

NOTE: The longer the impact wrench is operated in the hammer function,

the tighter the fastener will become. 1 –2 seconds is normally sucient

with small nuts, and bolts even less time.

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