Panasonic EY7202GQW User Manual download pdf (Page 8)

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8

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The driver is preset to “F” full power

(digital clutch is off) and the one-shot

impact function is off when shipped

from the manufacture.

CAUTION:

When the clutch is set to 1 or 2 stage,

the impact power mode is automatically

set at “Soft” impact mode regardless of

the impact power mode select display

setting.

When the clutch is set to 3 or 4 stage,

the impact power mode is automatically

set at “Medium” impact mode even in

the “Hard” impact mode display setting.

Clutch setting and

operating impact force

Impact

Power Mode

Display

Soft Medium Hard

H

Soft Medium Medium

M

Soft Soft Soft

S

Important remarks when

using the digital clutch and

one shot impact functions

The digital clutch setting could be used

only as a guideline. The suitable setting

will vary depending on the hardness of

the material, the force being applied to the

tool, and the type of screw.

Uneven material hardness could result in

less-tightening or over-tightening depend

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ing on the position on the material.

If the battery pack capacity is low, the

driver might not fully tighten the screws.

Usage

When driving screws into wood, use the

screws of less than 90 mm long and avoid

knots of wood materials.

Be sure to set the impact power mode

and digital clutch to match the material

and screws being used.

When selecting the digital clutch settings,

start from low to high stage while check

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ing the setting (on a scrap piece of the

material) to determine the best setting.

Too high setting could result in over-tight

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ening of the screws.

Depress the trigger switch fully when using

the digital clutch and/or one-shot impact

function during one period of operation.

Using low speed by trigger switch could

result in a discrepancy in work results.

When using the digital clutch, depress the

trigger switch fully until the digital clutch

operates. Do not release the switch until

the rotation stops. Releasing the switch

to stop rotation before finishing tighten

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ing a screw could result in not being fully

tightened. (If this happens, start from the

beginning of fastening.)

Applications not recommend-

ed for these functions

Tightening screws into easily breakable

materials, such as thin plastics.

Tightening screws into lightweight steel

sheet which thickness is 0.8 mm or less.

Tightening TEKS screws into soft surface

materials, such as interior finishing mate

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rials.

Reason: The impact function is a

mechanical sideway impact. The tight

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ening torque increases instantly step by

step when the hammer impacts. There

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fore, fastening torque of impact driver is

not generally increased as a drill driver.

(The accuracy also varies depending on

the material.)

Tightening time

Number of impacts

Impact torque curve

Tightening torque (load)

Drill driver torque increase.

Setting value

Impact torque curve

To control the tightening torque for screws

and bolts during factory manufacturing

and assembly.

Reason: The digital clutch uses a sen-

sor and microcomputer to deduce the load

from the number of motor rotation between

impacts and then stop the rotation when

the load reaches to the set clutch load. To

deduce this load requires at least 4 or 5

impacts, This is not suitable for materials

which requires a low tightening load, as

impact may not occur 4 or 5 times.

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